ecb / ecb.texi

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\input texinfo   @c -*-texinfo-*-
@c

@c This manual covers the tool "ECB", and is a part of it's
@c distribution.

@c This manual is free software; you can redistribute it and/or modify
@c it under the terms of the GNU General Public License as published by
@c the Free Software Foundation; either version 2, or (at your option)
@c any later version.

@c This manual is distributed in the hope that it will be useful,
@c but WITHOUT ANY WARRANTY; without even the implied warranty of
@c MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
@c GNU General Public License for more details.

@c You should have received a copy of the GNU General Public License
@c along with GNU Emacs; see the file COPYING.  If not, write to the
@c Free Software Foundation, Inc., 59 Temple Place - Suite 330,
@c Boston, MA 02111-1307, USA.


@setfilename ecb.info

@settitle ECB - the Emacs Code Browser

@c If we want only one index for concepts, functions and variables
@c @syncodeindex vr cp
@c @syncodeindex fn cp

@c in info we do not want paragraph indenting
@ifinfo
@paragraphindent 0
@end ifinfo

@exampleindent   3

@footnotestyle end

@dircategory GNU Emacs Lisp
@direntry
* ECB: (ecb).           Emacs Code Browser
@end direntry

@titlepage
@sp 10
@center @titlefont{ECB - the Emacs Code Browser}
@vskip 0pt plus 1 fill
Copyright @copyright{} 2000, 2001, 2002 Jesper Nordenberg
@end titlepage

@node Top, Install and first steps, (dir), (dir)
@comment  node-name,  next,  previous,  up

ECB (Emacs Code Browser) is a source code browser for Emacs. It is a
global minor-mode which displays a couple of windows that can be used
to browse directories, files and methods. It supports method parsing
for Java, C, C++, Elisp and some more.

@iftex
@sp 1
@end iftex

@strong{NOTE}: Experienced ECB users find a complete alphabetical list
of all commands and user-options in @ref{Interactive ECB commands} and
@ref{Customizable options}.

@c In the following two paragraphs we distinct between HTML-, info-,
@c and tex-format concerning the display of the URLs.
@ifinfo
The latest version of ECB can always be found at the URL
@url{http://home.swipnet.se/mayhem/ecb.html}.

To send bug reports, or participate in discussions about ECB, use the
mailing list @email{ecb-list@@lists.sourceforge.net} via the URL
@url{http://lists.sourceforge.net/lists/listinfo/ecb-list}.
@end ifinfo

@iftex
@sp 1

The latest version of ECB can always be found at the URL @*
@url{http://home.swipnet.se/mayhem/ecb.html}.

@sp 1

To send bug reports, or participate in discussions about ECB, use the
mailing list @*@email{ecb-list@@lists.sourceforge.net} via the URL @*
@url{http://lists.sourceforge.net/lists/listinfo/ecb-list}.
@end iftex

@ifhtml
The latest version of ECB can always be found at 
@uref{http://home.swipnet.se/mayhem/ecb.html}

To send bug reports, or participate in discussions about ECB, use the
mailing list @email{ecb-list@@lists.sourceforge.net} via 
@uref{http://lists.sourceforge.net/lists/listinfo/ecb-list}
@end ifhtml

@menu
* Install and first steps::     Installing ECB and first steps
* Overview::                    Introduce basic concepts
* Activation and Deactivation:: How to start and end ECB
* Usage of ECB::                How to use ECB
* Customizing::                 How to customize ECB
* Submitting problem report::   What to do when problems occur
* Upgrading::                   Upgrading and downloading packages
* Tips and tricks::             Useful hints and tips
* Elisp programming::           Entry points for elisp programmers
* Conflicts and bugs::          Known Conflicts with other packages and bugs
* Command Index::               Index for interactive commands
* Option Index::                Index for user options
* Concept Index::               Index for concepts and terms
@comment * Index::

@detailmenu
 --- The Detailed Node Listing ---

Installation and first steps of ECB

* Installation::                Installation of ECB
* First steps::                 First steps after activating ECB first time

Overview

* ECB Directories::             Contents of the ECB Directories-buffer
* ECB Sources::                 Contents of the ECB Sources/history-buffer
* ECB Methods::                 Contents of the ECB Methods-buffer

Activation and Deactivation

* Standard activation::         How to manually (de)activate ECB
* Automatic activation::        Automaticaly (de)activating ECB

Usage of ECB

* Using the mouse::             Working with the mouse
* Using the keyboard::          Working with the keyboard
* The edit-window::             How to use the edit-window(s)
* Temp- and compile-buffers::   Displaying temp- and compilation-buffers
* The Methods buffer::          Using and customizing he Methods-buffer
* The ECB-layout::              Changing, customizing, redrawing the layout
* Hiding the ECB windows::      Hiding/Showing the ECB-windows
* Back/forward navigation::     Back- and forward navigation like a browser
* ECB-window synchronizing::    Auto./manual synchronizing the ECB-windows
* Interactive ECB commands::    All interactive user-commands of ECB

Working with the keyboard in the ECB-windows

* Navigation::                  Keyboard navigation in a tree-buffer
* Incremental search::          Find nodes as fast as possible

Using and customizing the ECB-Methods buffer

* Customizing the display::     How to customize the Methods-buffer display
* Rebuilding the Methods::      When to rebuild the Methods-buffer      

Changing, customizing and redrawing the ECB-layout

* Changing the ECB-layout::     How to change and customize the layout
* Redrawing the ECB-layout::    How and when redrawing the layout

Customizing ECB

* Most important options::      Which option you must know
* Customizable options::        All customizable options of ECB

All customizable options of ECB

* ecb-general::                 General customizing ECB
* ecb-directories::             Customizing the ECB-directories
* ecb-sources::                 Customizing the ECB-sources
* ecb-methods::                 Customizing the ECB-methods
* ecb-history::                 Customizing the ECB-history
* ecb-layout::                  Customizing the ECB-layout
* ecb-face-options::            Customizing options for faces
* ecb-faces::                   Customizing the faces
* ecb-download::                Customizing how to download ECB
* ecb-help::                    Customizing the online help of ECB

Upgrading and downloading packages

* Downloading new versions::    How to download newer versions of packages
* Auto. option-upgrading::      ECB can auto. upgrade your options

Automatic upgrading of options

* User interface::              Options and commands you should know
* Background information::      Maybe some interesting informations

Tips and tricks

* Changing faces::              Changing faces in the ECB tree-buffers
* Small screens::               Working with small screens
* Simulating speedbar::         Simulating speedbar without an extra frame
* Integrating speedbar::        Integrating speedbar in the ECB-frame
* Optimize scrolling::          Optimize scrolling in the edit-window
* Large directories::           Working with large directories
* Using eshell::                Optimal using of eshell in ECB

Entry points for elisp programmers

* List of variables::           Which variables an elisp-program can use
* List of hooks::               All available hooks
* tree-buffer::                 Some words to the tree-buffer-library
* Adviced functions::           How to deal with the adviced functions
* New layouts::                 How to program new layouts

Known conflicts and bugs of ECB

* Conflicts::                   Known conflicts with other packages
* Bugs::                        Known bugs

Known conflicts with other packages

* VC::                          Conflicts with Version Control
* follow-mouse::                Conflicts with follow-mouse.el
* avoid::                       Conflicts with avoid.el
* calendar::                    Conflicts with calendar.el
* calculator::                  Conflicts with calculator.el

@end detailmenu
@end menu

@node Install and first steps, Overview, Top, Top
@chapter Installation and first steps of ECB

This chapter describes how to install ECB and what are the first
steps after activation of ECB

@menu
* Installation::                Installation of ECB
* First steps::                 First steps after activating ECB first time
@end menu

@node Installation, First steps, Install and first steps, Install and first steps
@section Installation of ECB

@strong{IMPORTANT}: The following steps 1., 2., 3., 6. and 7. describe
installation tasks if you got the archive in the format available at
the ECB website. If you use XEmacs and got ECB as regular
XEmacs-package (e.g. downloaded and installed by the net-installer of
XEmacs) then the steps 1., 2., 3., 6. and 7. are not necessary for
you.

@enumerate

@item
Unpack the ECB archive.

@item
Read the file @file{README} in the ECB-directory and install the
required semantic- and eieio-version.

@strong{Note}: ECB maybe requires a newer version of these libraries than
shipped with Emacs or XEmacs. You have to install exactly a version
ECB requires and also to make sure that the correct version is loaded
into (X)Emacs!

But ECB checks auto. during start-time if the correct versions of
semantic and eieio are installed and gives you proper feedback.
@xref{Download required packages}.

@item
Add the new ECB-directory to your @code{load-path} variable.

You @strong{MUST} add the ECB-install-directory to the
@code{load-path} either by changing the @code{load-path} variable
directly in your @file{.emacs} or @file{site-lisp/site-start.el} or by
working with a file @file{subdirs.el}.

@strong{ATTENTION}:
ECB is NOT properly installed if it's directory is not added to
@code{load-path} and for example just loaded by

@example
(load-file "/path/to/ecb/ecb.el")
@end example

Do not do this!

@item
Add to your @file{.emacs} or @file{site-lisp/site-start.el} the line:

@example
(require 'ecb)
@end example

@item Restart Emacs.
@end enumerate

ECB is now ready for use and can be activated by calling @code{M-x
ecb-activate}. Now you can either starting using ECB or you can do
these optional installation steps:

@enumerate 6

@item Call @code{ecb-byte-compile}

This byte compiles ECB. You can safely ignore all messages.
(You can also bytecompile ECB from the command-line either by using
the @file{Makefile} or by using the batch-file @file{make.bat}. Just
read the comments in that file you choose.)

@item Install the supplied @file{ecb.info}

The ECB distribution contains a file @file{ecb.info} which is the
online-help of ECB in Info-format. You can install this online help so
it's available in the Top-directory of Info. There are two ways to do
this:

@itemize @minus
@item Use ``install-info'' (recommended):

@enumerate
@item
Copy the file @file{ecb.info} into the info-directory of Emacs

@item
Install it with the command ``install-info'' (if available on your
system) in the @file{dir}-file.
@end enumerate

The supplied @file{Makefile} offers a target @code{install-help} which
does both of these steps. You have just to call @code{make
install-help} with the correct EMACSINFOPATH set (see the comment in
@file{Makefile}). Here is an example:

@example
make EMACSINFOPATH=/path/to/emacs/info install-help
@end example

@item Manual Installation:

Copy the file @file{ecb.info} into the info-directory of Emacs and
modify the file @file{dir} manually.
@end itemize

But it doesn't matter if you do not execute this step (7.) because the
online help of ECB is always available though, see
@code{ecb-show-help} (@pxref{Interactive ECB commands}).

@end enumerate

@node First steps, , Installation, Install and first steps
@section First steps after activating ECB first time

This section of the ECB online-help is displayed automatically by ECB
after activating ECB first time and describes what are the first basic
steps:

@enumerate

@item Configure where ECB can find your sources:

Call @code{M-x customize-option RET ecb-source-path RET}@footnote{This
means first hitting the keys @kbd{M} (Meta- or Alt-key) and @kbd{x}
simultaniously, inserting ``customize-option'' in the minibuffer,
hitting RETURN, inserting ``ecb-source-path'' in the minibuffer and
finally hitting RETURN again}. This lets you customize the option
@code{ecb-source-path} with the customize-feature of Emacs. This opens
a customize-buffer where you can insert all the directories where ECB
can find your source-files. Save your changes with the button ``Save
for future sessions'' and then throw away this customize-buffer either
by killing it with @code{M-x kill-buffer} or clicking at the button
``Finish''.

@item Read the online-help of ECB:

The online-help of ECB is available via

@itemize @minus
@item calling @code{M-x ecb-show-help},
@item pressing @kbd{C-c . o} or
@item using the menu ``ECB''.
@end itemize

(The section you are currently reading is part of the online-help of
ECB)

@item Start working with ECB.
@end enumerate

@node Overview, Activation and Deactivation , Install and first steps, Top
@chapter Overview

@cindex tree-buffer
@cindex ECB-windows
ECB is a global minor-mode which offers a few @dfn{ECB-windows} for
browsing your sources comfortable with the mouse and the keyboard.
These ``special'' windows are also called @dfn{tree-buffer} in this
manual. Every @dfn{item} in such a tree-buffer, i.e. every line, is
also called a @dfn{node} of this tree-buffer. There are currently
three different types of ECB-windows/tree-buffers:

@itemize @minus
@item ECB-Directories
@item ECB-Sources
@item ECB-Methods
@end itemize

In addition to these ``special'' ECB-windows you have always one or
two @dfn{edit-windows} (@pxref{The edit-window}) in the ECB-frame and
at the bottom a @dfn{compilation-window} (optional), where all the
output of Emacs-compilation (compile, grep etc.) is shown
(@pxref{Temp- and compile-buffers}).

The following ``ascii-screenshot'' illustrates the typical layout of
the ECB-frame@footnote{This is only one example of the layouts ECB
offers, @xref{Changing the ECB-layout}}:

@example
------------------------------------------------------------------
|              |                                                 |
|  Directories |                                                 |
|              |                                                 |
|--------------|                                                 |
|              |                                                 |
|  Sources     |                                                 |
|              |                                                 |
|--------------|                 Edit-window(s)                  |
|              |        (can be splitted in two windows)         |
|  Methods     |                                                 |
|              |                                                 |
|--------------|                                                 |
|              |                                                 |
|  History     |                                                 |
|              |                                                 |
------------------------------------------------------------------
|                                                                |
|                 Compilation-window (optional)                  |
|                                                                |
------------------------------------------------------------------
@end example

In the following subsections the ``special'' ECB-windows will be
explained in detail.

@menu
* ECB Directories::             Contents of the ECB Directories-buffer
* ECB Sources::                 Contents of the ECB Sources/history-buffer
* ECB Methods::                 Contents of the ECB Methods-buffer
@end menu

@node ECB Directories, ECB Sources, Overview, Overview
@section ECB Directories

@cindex Directories
@itemize @bullet
@item
Select directories (and - if enabled - source files) in the
@dfn{ECB-Directories} buffer by clicking a mouse button on the directory
name or by hitting RETURN when the cursor is placed on the item line,
@xref{Usage of ECB}.

@item
Directory names with a ``[+]'' symbol after (or before) them can be
expanded/collapsed by clicking on the symbol, pressing the TAB key
when the cursor is placed on the package line or clicking a mouse
button on the item, @xref{Usage of ECB}.

@item
Right clicking on an item will open a popup menu where different
operations on the item under the mouse cursor can be performed.

@item
Pressing F2 will open the ECB customization group
(@pxref{Customizing}) in the edit window. F3 shows the online help in
the edit-window. Pressing F4 in the ECB-directories buffer will offer
adding a new source-path.
@end itemize

@node ECB Sources, ECB Methods, ECB Directories, Overview
@section ECB Sources

@cindex Sources
@cindex History
@itemize @bullet
@item
Source files can be selected by clicking a mouse button (@pxref{Using
the mouse}) or hitting RETURN (@pxref{Using the keyboard}) on the
source row in the @dfn{ECB-Sources} or @dfn{ECB- History} windows.

IMPORTANT: If you hold down the SHIFT-key while clicking with the
primary mouse button (@pxref{Using the mouse}) or RETURN
(@pxref{Using the keyboard}) on a source row in the ECB-Sources
or ECB-History windows then the source will not be displayed in the
edit-window but it will be scanned in the background and all its
contents (e.g. methods and variables) are listed in the @dfn{ECB
Methods} window (@pxref{ECB Methods}. So you can get an overlook over
the source without changing the buffer in the edit-window.

@item
Clicking on the source file with the secondary mouse button or
C-RETURN (@pxref{Usage of ECB}) will open the source file in
the other edit window.

@item
Right clicking on a source file will open a popup menu where different
operation on the item under the mouse cursor can be performed.
@end itemize

@node ECB Methods, , ECB Sources, Overview
@section ECB Methods

@cindex Methods
@cindex Methods
@itemize @bullet
@item
The @dfn{ECB-Methods} buffer contains the methods (and variables, if you
want) in the selected source file. When a method/variable is selected
with the primary mouse button  or RETURN (@pxref{Usage of ECB}) the
edit buffer will jump to the method/variable.

@item
Clicking on a method/variable with the secondary mouse button or C-RETURN
(@pxref{Usage of ECB}) will jump to the method in the other edit window.
@end itemize

@node Activation and Deactivation, Usage of ECB, Overview, Top
@chapter Activation and Deactivation

@noindent
This chapter describes all aspects of activating and deactivating ECB.

@menu
* Standard activation::         How to manually (de)activate ECB
* Automatic activation::        Automaticaly (de)activating ECB
@end menu

@node Standard activation, Automatic activation, Activation and Deactivation, Activation and Deactivation
@section Standard activation and deactivation

Call @kbd{M-x ecb-activate} and @kbd{M-x ecb-deactivate} to activate or
deactivate ECB. If you want ECB started in a new frame see the option
@code{ecb-new-ecb-frame} (default is nil). @code{ecb-activate} always
raises and selects the ECB-frame even if ECB is already started.

@cindex minor mode
Because ECB is a global minor-mode it can also be
(de)activated/toggled by @kbd{M-x ecb-minor-mode}.

@node Automatic activation, , Standard activation, Activation and Deactivation
@section Automatic activation and deactivation

@cindex Automatic activation
@cindex Automatic deactivation
There are three options for auto. (de)activation ECB after Emacs-start
and also major-mode based.

@table @code
@item ecb-auto-activate
This option is for auto. activating ECB after Emacs-startup. Set this
to not nil and ECB will automaticaly be started after Emacs comes up.

@item ecb-major-modes-activate
@itemx ecb-major-modes-deactivate
These option give you the possibility to activate (rsp. deactivate)
ECB on a major-mode basis, means you can define for which major-modes
ECB should be activated and for which modes it should activated.

If activating or deactivating is too strong you can also customize ECB
with these two option only hiding/showing it's ECB-windows
(tree-buffers) on a major-mode basis. At last this is nothing more
than auto. calling @code{ecb-toggle-ecb-windows} (@pxref{Interactive
ECB commands} depending which major-mode is active.
@end table


@node Usage of ECB, Customizing, Activation and Deactivation, Top
@chapter Usage of ECB

This chapter describes in a detailed manner all aspects of using the
Emacs Code Browser.

@menu
* Using the mouse::             Working with the mouse
* Using the keyboard::          Working with the keyboard
* The edit-window::             How to use the edit-window(s)
* Temp- and compile-buffers::   Displaying temp- and compilation-buffers
* The Methods buffer::          Using and customizing he Methods-buffer
* The ECB-layout::              Changing, customizing, redrawing the layout
* Hiding the ECB windows::      Hiding/Showing the ECB-windows
* Back/forward navigation::     Back- and forward navigation like a browser
* ECB-window synchronizing::    Auto./manual synchronizing the ECB-windows
* Interactive ECB commands::    All interactive user-commands of ECB
@end menu

@node Using the mouse, Using the keyboard, Usage of ECB, Usage of ECB
@section Working with the mouse in the ECB-windows

@cindex primary button
@cindex secondary button
@cindex mouse button
Normally you get best usage if you use ECB with a mouse. ECB
distinguishes between a @dfn{primary} and a @dfn{secondary}
mouse-button:

A click with the primary button causes the main effect in each ECB-buffer:

@itemize @minus
@item ECB Directories:
Expanding/collapsing nodes and displaying files in the ECB-Sources
buffer.

@item ECB sources/history:
Opening the file in that edit-window specified by the option
@code{ecb-primary-mouse-jump-destination}.

@item ECB Methods:
Jumping to the method in that edit-window specified by the option
@code{ecb-primary-mouse-jump-destination}.
@end itemize

@cindex SHIFT-click
Per default the complete node-name of an item in a tree-buffer is displayed in
the echo-area if the mouse moves over it, regardless if the related window is
the active one or not. You can get the same effect if you click with the
primary mouse-button onto a node while SHIFT is held. In general: Via
@code{ecb-show-node-info-in-minibuffer} you can specify in a detailled manner for
every ECB tree-buffer when and which node-info should be displayed in the
minibuffer.

IMPORTANT: Doing this SHIFT-click in the ECB-Sources or ECB-History
windows does not only show the node in the echo-area but it also opens the
clicked source only in the background and shows all its methods/variables in
ECB-Methods; the buffer of the edit-window is not changed! This is very
useful to get only an overlook for a certain source.

The secondary mouse-button is for opening (jumping to) the file in the other
window (see the documentation @code{ecb-primary-mouse-jump-destination}).

With the option @code{ecb-primary-secondary-mouse-buttons} the following
combinations of primary and secondary mouse-buttons are possible:

@itemize @minus
@item
primary: mouse-2, secondary: C-mouse-2@footnote{means mouse-2 while CTRL-key
is pressed.}. This is the default.

@item
primary: mouse-1, secondary: C-mouse-1

@item
primary: mouse-1, secondary: mouse-2
@end itemize

If you change this during ECB is activated you must deactivate and activate
ECB again to take effect

In each ECB-buffer mouse-3 (= right button) opens a special context popup-menu
for the clicked item where you can choose several senseful actions.


@node Using the keyboard, The edit-window, Using the mouse, Usage of ECB
@section Working with the keyboard in the ECB-windows

ECB offers the @code{ecb-mode-map} which binds the most important
functions of ECB to keys so you can easily use ECB without a mouse.

IMPORTANT: Do not modify @code{ecb-mode-map} directly! The option
@code{ecb-key-map} defines all ECB keybindings, including a common
prefixkey (This is by default @kbd{C-c .}). If there are conflicts
with other minor-modes or packages you can define very easy another
prefix. Please read carefully the description of @code{ecb-key-map}
(@pxref{ecb-general}).!

@menu
* Navigation::                  Keyboard navigation in a tree-buffer
* Incremental search::          Find nodes as fast as possible
@end menu

@node Navigation, Incremental search, Using the keyboard, Using the keyboard
@subsection Navigation

@cindex RETURN key
@cindex TAB key
@cindex expanding
@cindex collapsing
In the ECB-buffers RETURN and TAB are the most important keys:

@itemize @bullet
@item
RETURN does the same as the primary button and C-RETURN does the same
as the secondary button. The terms primary and secondary are explained
in @ref{Using the mouse}. S-RETURN is the same as the
SHIFT-click (@pxref{ECB Sources}). See also the option
@code{ecb-tree-RET-selects-edit-window} and the function
@code{ecb-toggle-RET-selects-edit-window} which is bound to @kbd{C-t}
in each tree-buffer of ECB!

@item
TAB always expands or collapses expandable nodes.
@end itemize

The RETURN and TAB keys can not be (re)defined with @code{ecb-key-map}!

If you set @code{ecb-tree-navigation-by-arrow} to not nil then the left- and
right-arrow keys work in the ECB tree-window in the following smart way if
onto an expandable node:

@itemize @bullet
@item
Left-arrow: If node is expanded then it will be collapsed otherwise
point jumps to the next ``higher'' node in the hierarchical tree (higher
means the next higher level or - if no higher level available - the
next higher node on the same level).

@item
Right-arrow: If node is not expanded then it will be expanded.
@end itemize

Onto a not expandable node the horizontal arrow-keys go one character in the
senseful correct direction.


@node Incremental search, , Navigation, Using the keyboard
@subsection Incremental search for a node in current tree-buffer

@cindex Incremental search
Each displayable key (e.g. all keys normally bound to @code{self-insert-command})
is appended to the current seach-pattern. The tree-buffer tries to jump to the
first node which matching the current search-pattern either as substring or as
prefix (see below). If no match is found then nothing is done. There are some
special keys:

@itemize @bullet
@item @kbd{backspace} and @kbd{delete}:
Delete the last character from the search-pattern.

@item @kbd{home}:
Delete the complete search-pattern

@item @kbd{end}:
Expand either to a complete node if current search-pattern is already
unique or expands to the greates common substring or prefix of the
nodes. If there are at least two nodes with the same greatest
common-prefix than every hit of @kbd{end} jumps to the next node with this
common prefix.
@end itemize

For better overlooking the current search-pattern is shown in the echo area.
After selecting a node with RET the search-pattern is cleared out. With
@code{ecb-tree-incremental-search} you can specify if the current search-pattern
must be a real prefix of the node (default) or if any substring is matched.

For faster and easier finding the right node in a ecb-window thi incremental
search ignores the following non interesting stuff:

@itemize @minus
@item any leading spaces
@item expand/collapse-buttons: [+] resp. [-]
@item protection-signs (+, -, #) in the method-window if uml-notation is used
@item variables types or returntypes in front of variable- or method-names.
@item const specifier for variables
@end itemize

This means: Just type in the prefix (resp. a substring) of a class-,
variable-, method-, directory- or filename and ECB will bring you as
fast as possible to the node you want. Incremental node-search uses
the value of @code{case-fold-search}.

Tip: The @code{ecb-minor-mode} offers you in the @code{ecb-mode-map}
(customizable via @code{ecb-key-map}) some keys for selecting every window
of the ecb-frame. This makes window-selection a child�s play. For
example you can jump into the method-window by hitting @kbd{C-c . m}.


@node The edit-window, Temp- and compile-buffers, Using the keyboard, Usage of ECB
@section Working with the edit-window

@cindex edit-window
ECB offers you all what you need to work with the edit-window as if
the edit-window would be the only window of the ECB-frame.

@cindex Adviced functions
ECB offers you to advice the following functions so they work best with ECB:

@itemize @minus
@item @code{other-window}
@item @code{delete-window}
@item @code{delete-other-windows}
@item @code{split-window-horizontally}
@item @code{split-window-vertically}
@item @code{switch-to-buffer}
@item @code{switch-to-buffer-other-window}
@item @code{other-window-for-scrolling}
@end itemize

The behavior of the adviced functions is:

@itemize @bullet
@item
All these adviced functions behaves exactly like their corresponding
original functons but they always act as if the edit-window(s) of ECB
would be the only window(s) of the ECB-frame. So the edit-window(s) of
ECB seems to be a normal Emacs-frame to the user.

@item
If called in a not edit-window of ECB all these function jumps first
to the (first) edit-window, so you can never destroy the ECB-window
layout unintentionally.

@item
If called in another frame than the ECB-frame these functions behave
exactly like the not adviced original versions!
@end itemize

ATTENTION: If you want to work within the edit-window with splitting
and unsplitting the edit-window(s) it is highly recommended to use the
adviced-functions of ECB instead of the original Emacs-functions (see
above). Per default ECB does advice all of the functions mentioned
above but with the option @code{ecb-advice-window-functions} you can
customizes which functions should be adviced by ECB. Please read
carefully the documentation of this option!

Another interesting option in the context of the edit-window and these
adviced functions is @code{ecb-layout-always-operate-in-edit-window}!

@node Temp- and compile-buffers, The Methods buffer, The edit-window, Usage of ECB
@section Temp- and compile-buffers display in ECB

@cindex temporary buffers
@cindex help buffers
@cindex compilation buffers
@cindex grep buffers
If you call any help in Emacs, e.g. by calling @code{describe-function}, or
if you do a completion in the minibuffer, then Emacs displays the
result-buffer in another window. This behavior you have also in ECB.
If the edit-window is already splitted then the temp-buffer is
displayed in the ``other'' edit-window otherwise the edit-window will be
splitted first. The variables @code{temp-buffer-max-height} and
@code{temp-buffer-resize-mode} work also correctly with ECB.

Same for all compilation output-buffers (e.g. after a @code{compile} or
@code{grep}) and the variable @code{compilation-window-height}.

This is default behavior of ECB. But there is also another way to
display such buffers:

@itemize @bullet
@item
With the option @code{ecb-compile-window-height} you can define if the ECB
layout should contain per default a compilation-window at the bottom
(and if yes the height of it). If yes ECB displays all output of
compilation-mode (compile, grep etc.) in this special window. Same for
displaying help-buffers or similar stuff.

@item
With the option @code{ecb-compile-window-temporally-enlarge} you can allow
Emacs to enlarge temporally the ECB-compile-window in some situations.
Please read the comment of this option. See also the description of
the function @code{ecb-toggle-enlarged-compilation-window}.

@item
With the option @code{ecb-layout-switch-to-compilation-window} you can
modify the switch-to-buffer...-functions to work best if your layout
contains a compilation-window. See the docstring of this option.

@item
With the command @code{ecb-cycle-through-compilation-buffers}
(@pxref{Interactive ECB commands}) you can cycle through all current
open compilation-buffers in the sense of
@code{ecb-compilation-buffer-p} very fast.
@end itemize

But because ECB works best without such a durable compilation-window
you should read the documentation of these two options carefully!

@node The Methods buffer, The ECB-layout, Temp- and compile-buffers, Usage of ECB
@section Using and customizing the ECB-Methods buffer

This chapter describes how to use and customize the Methods-buffer of
ECB.

@menu
* Customizing the display::     How to customize the Methods-buffer display
* Rebuilding the Methods::      When to rebuild the Methods-buffer      
@end menu

@node Customizing the display, Rebuilding the Methods, The Methods buffer, The Methods buffer
@subsection Customizing the display of the Methods-buffer

@cindex semantic token
@cindex token
The ECB-Methods buffer is probably the most important browsing window
offered by ECB. It displays all semantic informations of the current
buffer in the edit-window.

ECB gets all informations displayed in this Methods-buffer from the
semantic-library. This library parses auto. the current source-buffer
in the edit-window of ECB and returns all information in form of
@dfn{tokens} to ECB which displays them in a browsable form in its
Method-buffer. See @ref{ECB Methods} for information how to use the
Methods-buffer.

There are several options to customize which tokens ECB should display
in general, if the tokens should be collapsed or expanded, how to
fontify them (i.e. syntax-highlighting) and something more.

@table @code
@item ecb-show-tokens
Which semantic-tokens (e.g. types, methods, variables etc.) should be
displayed and should they be collapsed, flattened or expanded. Sorting
is also possible.

@item ecb-font-lock-tokens
@itemx ecb-type-token-display
How to fontify the tokens in the Method-buffer

@item ecb-token-display-function
ECB and semantic offer several predefined functions for displaying the
tokens. Here you can customize, what informations tokens should
contain (only the method-name or the whole signature or something
else) and what notation should be used, e.g. UML or not.

@end table

These are the most important options for this topic but it is
recommended to have a look into the customize-group @code{ecb-methods}
(@pxref{ecb-methods}) and check all the options offered there!

@node Rebuilding the Methods, , Customizing the display, The Methods buffer
@subsection Rebuilding the Methods-buffer

In almost all cases there is @strong{NO} need to manually rebuild the
method-buffer, because it is always done automatically if necessary.
But nevertheless there exist a few rare scenarios where a complete
manual rebuild can be necessary. Here is one example:

Depending on the semantic-version: If an elisp-file is parsed which
contains a defun X in the middle where the closing ) is missing, then
semantic parses only until this defun X is reached and you will get an
incomplete ECB-method buffer. In such a case you must complete the
defun X and then completely reparse the elisp-file and rebuild the ECB
method buffer!

A complete manually rebuild is done by @code{ecb-rebuild-methods-buffer}.

@node The ECB-layout, Hiding the ECB windows, The Methods buffer, Usage of ECB
@section Changing, customizing and redrawing the ECB-layout

@cindex layout
@cindex ECB-layout
The term @dfn{ECB-layout} means in which windows the ECB-frame is
divided. This chapter describes all aspects concerning this layout,
especially changing, customizing and redrawing it.

@menu
* Changing the ECB-layout::     How to change and customize the layout
* Redrawing the ECB-layout::    How and when redrawing the layout
@end menu

@node Changing the ECB-layout, Redrawing the ECB-layout, The ECB-layout, The ECB-layout
@subsection Changing and customizing the ECB-layout

ECB offers several predefined layouts with different sets and also
different locations of ECB-windows. To see which layouts are available
and choose an appropriate one just customize the option
@code{ecb-layout-nr}. The docstring of this option explains how to see
the different available layouts.

If you want to switch fast between some layouts see the option
@code{ecb-toggle-layout-sequence} and the command
@code{ecb-toggle-layout} (@pxref{Simulating speedbar})

In addition to the general layout you can specify if the layout should
contain a durable compilation-window at the bottom of the frame, see
@code{ecb-compile-window-height} (@pxref{Temp- and compile-buffers}).

Maybe you want also change the look&feel of the tree-buffers. Then you
can change the location of the collapse- and expand-symbols and the
indendation of sub-nodes in a tree. See @code{ecb-tree-indent} and
@code{ecb-tree-expand-symbol-before}.

@node Redrawing the ECB-layout, , Changing the ECB-layout, The ECB-layout
@subsection Redrawing the ECB-layout

@cindex redraw
If you have unintenionally destroyed the ECB-layout, you can always
restore the layout with calling @code{ecb-redraw-layout}. This is even
true, if you get messages like ``wrong-type-argument window-live-p
#<window 222>''.

If the variable @code{ecb-redraw-layout-quickly} is not nil then the redraw
is done by the @code{ecb-redraw-layout-quickly} function, otherwise by
@code{ecb-redraw-layout-full}. But it's strongly recommended to use the
quick redraw only if you have really slow machines where a full redraw
takes several seconds because the quick redraw is not really safe and
may have some drawbacks! On normal machines the full redraw should be
done in << 1s!


@node Hiding the ECB windows, Back/forward navigation, The ECB-layout, Usage of ECB
@section Hiding/Showing the ECB windows

@cindex Hide windows
@cindex Show windows
With @code{ecb-toggle-ecb-windows} you can hide/show all the ECB windows
without changing the activation state of ECB and also without
deactivating the advices for @code{delete-other-windows} and/or
@code{delete-window}. This is most useful if you use a layout like nr.10
(@pxref{Tips and tricks}) or if you want to have maximum space for
editing and you don't need the browsing windows all the time.

@node Back/forward navigation, ECB-window synchronizing, Hiding the ECB windows, Usage of ECB
@section Back- and forward navigation like a browser

With ECB you can ``browse'' in your source-files like with a
web-browser. This means ECB stores the current buffer- and
window-position relative to the current token@footnote{e.g. a method,
a variable or any other semantic token} in the edit-window after

@itemize @minus
@item selecting a token in the ECB-methods buffer or
@item selecting a source-file in the ECB-sources/history-buffer.
@end itemize

ECB offers two commands @code{ecb-nav-goto-next} (@kbd{C-c . n}) and
@code{ecb-nav-goto-previous} (@kbd{C-c . p}) to go forward and
backward within this navigation historylist. These commands are also
available via the menu ``ECB --> Navigate''.

Aside normal ``location-browsing'' this is usefull for example in a
scenario where @code{ecb-token-jump-narrow} is activated:

@enumerate
@item You edit a function
@item Goto another function above the current in the same file
@item Add a few lines
@item Call ecb-nav-goto-previous

Now you will edit at the same place in the function.
@end enumerate

@node ECB-window synchronizing, Interactive ECB commands, Back/forward navigation, Usage of ECB
@section Synchronization of the ECB-windows

Per default ECB synchronizes automatically the contents of the
ECB-windows/tree-buffers with the current active edit-window (rsp. the
current buffer of the edit window):

@itemize @bullet

@item ECB-directories:

This windows is synchronized to display the directory where the
source-file which is displayed in the edit-window is located. If the
source-path (i.e. an element of the option @code{ecb-source-path})
containing this directory is not expanded it will be auto. expanded
according to the value of the option
@code{ecb-auto-expand-directory-tree} (@pxref{ecb-directories}).

@item ECB-sources:

The ECB-sources-buffer contains after synchronizing all the sources of
the directory of the ``current'' source-file displayed in the
edit-window. The entry of the ``current'' source-file is highlighted.

@item ECB-methods:

Contains after synchronizing all the tokens of the buffer in the
edit-window, i.e. all methods, variables etc... depending of the
major-mode.

@item ECB-history:

Highlights the entry of the buffer displayed in the edit-window if
this buffer is a source-file.

@end itemize

This feature can be customized with the option @code{ecb-window-sync}:

If active then the synchronization takes place always a buffer changes
in the edit window, if deactivated then never. But you can also set
this option to a list of major-modes and then the sync. will only be
done if the major-mode of the current buffer belongs NOT to this list.

But in every case the synchronization takes only place if the
major-mode of the current-buffer in the edit-window has a relation to
files or directories. Examples for the former one are all
programming-language-modes like @code{c++-mode} or @code{java-mode},
@code{Info-mode} too, an example for the latter one is
@code{dired-mode}. For all major-modes related to
non-file/directory-buffers like @code{help-mode},
@code{customize-mode} and others never a synchronization will be done!

It's recommended to exclude at least @code{Info-mode} because it makes
no sense to synchronize the ECB-windows after calling the Info help.
Per default also @code{dired-mode} is excluded but it can also making
sense to synchronize the ECB-directories/sources windows with the
current directory of the dired-buffer in the edit-window.

@strong{NOTE}: With the command @code{ecb-current-buffer-sync} you can
do a manually synchronization if the automatic one is switched off or
if you just want to do this!

@node Interactive ECB commands, , ECB-window synchronizing, Usage of ECB
@section Interactive ECB commands

@noindent
ECB offers the a lot of interactive commands. Some of these commands
prompt the user in the minibuffer if called with a prefix argument.

Example: If @code{ecb-clear-history} is called with a prefix argument
then you will be prompted in the minibuffer with:

@example
Clear from history: [all, not-existing-buffers, existing-buffers]
@end example 

You can choose one of the options enclosed in brackets with
TAB-completion; hitting RET direct after the prompt chooses auto. the
first offered option (in the example above ``all'').

These are the interactive commands of ECB (listed in alphabetical
order):

@deffn Command ecb-activate
Activates the ECB and creates all the buffers and draws the ECB-screen
with the actually choosen layout (see @code{ecb-layout-nr}). This function
raises always the ECB-frame if called from another frame. This is the
same as calling @code{ecb-minor-mode} with a positive argument.
@end deffn

@deffn Command ecb-add-all-buffers-to-history
Add all current file-buffers to the history-buffer of ECB.
@end deffn

@deffn Command ecb-clear-history &optional clearall
Clears the ECB history-buffer. If @var{CLEARALL} is @code{nil} then
the behavior is defined in the option
@code{ecb-clear-history-behavior} otherwise the user is prompted what
buffers should be cleared from the history-buffer. For further
explanation see @code{ecb-clear-history-behavior}.
@end deffn

@deffn Command ecb-current-buffer-sync &optional force
Synchronizes the ECB buffers with the current buffer. Unless
@var{FORCE} is non-@code{nil} then do this only if current-buffer
differs from the source displayed in the ECB tree-buffers.
@end deffn

@deffn Command ecb-cycle-through-compilation-buffers &optional choose-buffer
Cycle through all compilation buffers currently open and display them
within the compilation window @code{ecb-compile-window}. If the
currently opened buffer within the compilation window is not a
compilation buffer, we jump to the first compilation buffer. If not we
try to loop through all compilation buffers. If we hit the end we go
back to the beginning.

If @var{CHOOSE-BUFFER} is not @code{nil} then the user will be
prompted for the compilation-buffer to swtich to.

See also the option @code{ecb-layout-switch-to-compilation-window}!
The difference is that this cycling-function offers only
compilation-buffers in the sense of @code{ecb-compilation-buffer-p}
whereas the adviced version of @code{switch-to-buffer} offers any
buffer but switches to @code{ecb-compile-window} if a
compilation-buffer!
@end deffn

@deffn Command ecb-deactivate
Deactivates the ECB and kills all ECB buffers and windows.
@end deffn

@deffn Command ecb-display-upgraded-options
Display a message-buffer which options have been upgraded or reset.
@end deffn

@deffn Command ecb-download-ecb
Download ECB from the ECB-website and install it. For this the options
@code{ecb-download-url} and @code{ecb-download-version} must be set
correct, whereas the default value of the former one should always be
correct.

For details about downloading and what requirements must be satisfied
see @ref{Downloading new versions}!

After sucessfull downloading the new ECB will be installed in a
directory parallel to current ECB-directory. After adding this new
directory tp @code{load-path} and restarting Emacs the new ECB version can
be activated by @code{ecb-activate}.
@end deffn

@deffn Command ecb-goto-window-compilation
Goto the ecb compilation window @code{ecb-compile-window}.
@end deffn

@deffn Command ecb-goto-window-directories
Make the ECB-directories window the current window.
@end deffn

@deffn Command ecb-goto-window-edit1
Make the (first) edit-window window the current window.
@end deffn

@deffn Command ecb-goto-window-edit2
Make the second edit-window (if available) window the current window.
@end deffn

@deffn Command ecb-goto-window-history
Make the ECB-history window the current window.
@end deffn

@deffn Command ecb-goto-window-methods
Make the ECB-methods window the current window.
@end deffn

@deffn Command ecb-goto-window-sources
Make the ECB-sources window the current window.
@end deffn

@deffn Command ecb-minor-mode &optional arg
Toggle ECB minor mode. With prefix argument @var{ARG}, turn on if
positive, otherwise off. Return non-@code{nil} if the minor mode is
enabled.
@end deffn

@deffn Command ecb-nav-goto-previous
Go backward in the navigation historylist, @xref{Back/forward
navigation}.
@end deffn

@deffn Command ecb-nav-goto-next
Go forward in the navigation historylist, @xref{Back/forward
navigation}.
@end deffn

@deffn Command ecb-rebuild-methods-buffer
Updates the methods buffer with the current buffer after deleting the
complete previous parser-information, means no semantic-cache is used!
Point must stay in an edit-window otherwise nothing is done. This
method is merely needed if semantic parses not the whole buffer
because it reaches a not parsable code. Examples when a call to this
function is necessary:

If an elisp-file is parsed which contains in the middle a defun X
where the closing ) is missing then semantic parses only until this
defun X is reached and you will get an incomplete ECB-method buffer.
In such a case you must complete the defun X and then call this
function to completely reparse the elisp-file and rebuild the ECB
method buffer!

If you change only the name of a method or a variable and you want
the new name be shown immediately in the ECB-method buffer then you
must call this function.
@end deffn

@deffn Command ecb-redraw-layout
Redraw the ECB screen. If the variable @code{ecb-redraw-layout-quickly} is
not nil then the redraw is done by the @code{ecb-redraw-layout-quickly}
function, otherwise by @code{ecb-redraw-layout-full}. But it's strongly
recommended to use the quick redraw only if you have really slow
machines where a full redraw takes several seconds because the quick
redraw is not really safe and may have some drawbacks! On normal
machines the full drawback should be done in << 1s!
@end deffn

@deffn Command ecb-show-help &optional format
Shows the online help of ECB either in Info or in HTML format
depending of the value of @code{ecb-show-help-format}. If called with
prefix argument, i.e. if @var{FORMAT} is not nil then the user is
prompted to choose the format of the help (Info or HTML). If an error
about not finding the needed help-file occurs please take a look at
the options @code{ecb-help-info-start-file} and
@code{ecb-help-html-start-file}!
@end deffn

@deffn Command ecb-submit-problem-report
Submit a problem report for the ECB to the ECB mailing-list. This
command generates in the edit-window a problem-report which contains
already the current values of all ECB options, the current
backtrace-buffer if there is any and the current message-buffer. You
will be asked for a problem-report subject and then you must insert a
description of the problem. Please describe the problem as detailed as
possible!
@end deffn

@deffn Command ecb-toggle-ecb-windows &optional arg
Toggle visibilty of the ECB-windows. With prefix argument @var{ARG},
make visible if positive, otherwise invisible. This has nothing to do
with (de)activating ECB but only affects the visibility of the ECB
windows. ECB minor mode remains active!
@end deffn

@deffn Command ecb-toggle-enlarged-compilation-window &optional arg
Toggle whether the @code{ecb-compile-window} is enlarged or not. If
@var{ARG} > 0 then enlarge to a sensefull value (see below), if
@var{ARG} <= 0 then shrink @code{ecb-compile-window} to
@code{ecb-compile-window-height} and if @var{ARG} is nil then toggle the
enlarge-state.

The @code{ecb-compile-window} is enlarged to the following value: At least
to the value of @code{ecb-compile-window-height} and max. to half of the
frame-height of the ECB-frame, best depending on the values of
@code{compilation-window-height} (before ECB was started!) and the number
of lines of current buffer in @code{ecb-compile-window}. If
@code{compilation-window-height} is set before ECB was started then ECB
never enlarges the @code{ecb-compile-window} over the value of
@code{compilation-window-height}! Changing this option during activated ECB
takes first effect after restarting ECB!
@end deffn

@deffn Command ecb-toggle-layout
Toggles between the layouts defined in @code{ecb-toggle-layout-sequence}.
Note: This function works by changing the options @code{ecb-layout-nr} and
@code{ecb-show-sources-in-directories-buffer} but only for current
Emacs-session.
@end deffn

@deffn Command ecb-update-directories-buffer
Updates the ECB directories buffer.
@end deffn

@deffn Command ecb-upgrade-options
Check for all ECB-options if their current value is compatible to the
defined type. If not upgrade it to the new type or reset it to the
default-value of current ECB. Try also to upgrade renamed options.
Displays all upgraded or reset options with their old (before the
upgrade/reset) and new values.
@end deffn


Most of these functions are also available via the menu ``ECB'' and
also via the ECB keymap with prefix @kbd{C-c .} (see
@code{ecb-minor-mode} for a complete list of the keybindings).

@node Customizing, Submitting problem report, Usage of ECB, Top
@chapter Customizing ECB

This chapter describes how to customize ECB for your personal taste.
The first chapter gives an overview of the most important options and
the second one lists all options of ECB.

@menu
* Most important options::      Which option you must know
* Customizable options::        All customizable options of ECB
@end menu

@strong{ATTENTION}: The best way you customize all the options of ECB
is via the customize-feature of (X)Emacs, i.e. means calling the
commands @code{customize-option} or @code{customize-group} etc. This
is also the strongly recommended way!

But of course you can also use @code{setq} or some elisp-code to
change the values of many but not all of the options. The values of
the following options @strong{MUST NOT} be changed via @code{setq} or
elisp-code but only with the customize-feature!

@itemize @minus
@item @code{ecb-source-path}
@item @code{ecb-tree-RET-selects-edit-window}
@item @code{ecb-font-lock-tokens}
@item @code{ecb-bucket-token-display}
@item @code{ecb-token-display-function}
@item @code{ecb-type-token-display}
@item @code{ecb-show-tokens}
@item @code{ecb-exclude-parents-regexp}
@item @code{ecb-highlight-token-with-point-delay}
@item @code{ecb-window-sync-delay}
@item @code{ecb-show-node-info-in-minibuffer}
@item @code{ecb-key-map}
@item @code{ecb-layout-nr}
@item @code{ecb-compile-window-height}
@item @code{ecb-compile-window-temporally-enlarge}
@item @code{ecb-windows-width}
@item @code{ecb-windows-height}
@item @code{ecb-advice-window-functions}
@item @code{ecb-layout-window-sizes}
@item @code{ecb-mode-line-prefixes}
@end itemize


@node Most important options, Customizable options, Customizing, Customizing
@section The most important options of ECB

Here are the most important options (it is recommended to check at
least the following options before working with ECB):

@table @code
@item ecb-source-path
Where ECB can find your sources. You must set this option!
@item ecb-show-help-format
Should the online help of ECB be displayed in the standard Info format
or in HTML format in a web-browser.
@item  ecb-auto-activate
@itemx ecb-major-modes-activate
@itemx ecb-major-modes-deactivate
Auto. (de)activation of ECB
@item ecb-key-map
All ECB-keybindings incl. a common prefixkey (@pxref{Using the
keyboard}).
@item ecb-new-ecb-frame
Should ECB create a new frame at activation time.
@item  ecb-primary-secondary-mouse-buttons
@itemx ecb-primary-mouse-jump-destination
Define how to use the mouse (@pxref{Using the mouse}).
@item  ecb-tree-expand-symbol-before
@itemx ecb-tree-indent
The look&feel of the trees in the tree-buffers. Maybe you like a value
of 4 for the latter one if you display the expand-symbol before
(@pxref{Changing the ECB-layout}).
@item ecb-source-file-regexps
Which files will (not) be shown in ECB.
@item ecb-show-node-info-in-minibuffer
When and which node-info should be displayed in the minibuffer?
@item ecb-layout-nr
The ECB layout, means which windows you want to be displayed in the
ECB-frame and also the location of these windows (@pxref{Changing the
ECB-layout}).
@item  ecb-token-display-function
@itemx ecb-type-token-display
@itemx ecb-show-tokens
How to display the entries in the ECB-method window
(@pxref{Customizing the display}).
@end table

But to make ECB working best for you it is also recommened to have a
look at @ref{Customizable options}!

@node Customizable options, ,Most important options, Customizing
@section All customizable options of ECB

@noindent
All customization of ECB is divided into the following ``customize
groups''. You can highly customize all the ECB behavior/layout so just
go to these groups and you will see all well documented ECB-options.

@menu
* ecb-general::                 General customizing ECB
* ecb-directories::             Customizing the ECB-directories
* ecb-sources::                 Customizing the ECB-sources
* ecb-methods::                 Customizing the ECB-methods
* ecb-history::                 Customizing the ECB-history
* ecb-layout::                  Customizing the ECB-layout
* ecb-face-options::            Customizing options for faces
* ecb-faces::                   Customizing the faces
* ecb-download::                Customizing how to download ECB
* ecb-help::                    Customizing the online help of ECB
@end menu

@node ecb-general, ecb-directories, Customizable options, Customizable options
@subsection Group ecb-general

@noindent
This group contains the following options:

@defopt ecb-activate-before-layout-draw-hook
Normal hook run at the end of activating the ecb-package by running
@code{ecb-activate}. This hooks are run after all the internal setup
process but directly before(!) drawing the layout specified in
@code{ecb-layout} (means before dividing the frame into several
windows).

A senseful using of this hook can be maximizing the Emacs-frame for
example, because this should be done before the layout is drawn
because ECB computes the size of the ECB-windows with the current
frame size! If you need a hook-option for the real end of the
activating process (i.e. after the layout-drawing) look at
@code{ecb-activate-hook}.
@end defopt

@defopt ecb-activate-hook
Normal hook run at the end of activating the ecb-package by running
@code{ecb-activate}. This hooks are run at the real end of the
activating process, means after the layout has been drawn!. If you
need hooks which are run direct before the layout-drawing look at
@code{ecb-activate-before-layout-draw-hook}.
@end defopt

@defopt ecb-auto-activate
Automatically startup ECB when Emacs starts up. This should only be
true if you always want to run @code{ecb-activate}.
@end defopt

@defopt ecb-auto-compatibility-check
Check at ECB-startup if all ECB-options have correct values. If not
nil then all ECB-options are checked if their current value have the
correct type. It the type is incorrect the option is either auto.
upgraded to the new type or reset to the default-value of current ECB
if no upgrade is possible. This feature can also upgrade options which
are renamed in current ECB and try to transform the old-value to the
new named option. After startup all upgraded or reset options are
displayed with their old (before upgrade/reset) and new values. See
also the commands @code{ecb-upgrade-options} and
@code{ecb-display-upgraded-options}. If this option is off then the
user can perform the check and reset manually with
@code{ecb-upgrade-options}.
@xref{Auto. option-upgrading}.
@end defopt

@defopt ecb-current-buffer-sync-hook
Normal hook run at the end of @code{ecb-current-buffer-sync}.
@end defopt

@defopt ecb-deactivate-hook
Normal hook run at the end of deactivating (but before the ecb-layout
is cleared!) ECB by running @code{ecb-deactivate}.
@end defopt

@defopt ecb-debug-mode
If not nil ECB displays debug-information in the Messages-buffer. This
is done for some critical situations concerning semantic-tokens and
their overlays (or extends for XEmacs). Normally you should not need
this switched on! But if you get errors like ``destroyed extend'' for
XEmacs or ``wrong-argument-type'' concerning overlays for GNU Emacs then
you should switch on this option and submitting a bug-report to the
ecb-mailing-list (@code{ecb-submit-problem-report}) after getting the
error again!
@end defopt

@defopt ecb-key-map
Specifies all keybindings for the ECB minor-mode keymap. The value is
a cons-cell where the car is a common-prefix key for all the
keybindings. The cdr is a list of keybindings each of them a list
again. A keybinding has the following form:

@example
'(<common-prefix-flag> <keysequence> <function>) where
@end example

@table @code
@item <common-prefix-flag>
If t then the common-prefixkey defined as car of the value (see above)
is used.

@item <keysequence>
If the common prefixkey is used then the final keybinding is the
concatenation of the common-prefixkey (see above) and this
keysequence.

@item <function>:
The function to bind to the key. This can also be a lambda-expression
.
@end table

It is highly recommended to use one of the standard keys C-c or C-x as
first key of your common-prefixkey!

You MUST change this option via customize to take effect!

All keysequences must be inserted as a string and must follow the
syntax needed by @code{read-kbd-macro} or @code{kbd}. This means you
can insert the key in the same manner @kbd{C-h k} displays keysequences.
Here is the summary of the syntax:

Text is divided into ``words'' separated by whitespace. Except for the words
described below, the characters of each word go directly as characters of the
keysequence. The whitespace that separates words is ignored. Whitespace in the
macro must be written explicitly, as in @kbd{C-c SPC}.

@itemize @bullet
@item
The special words RET, SPC, TAB, DEL, LFD, ESC, and NUL represent
special control characters. The words must be written in uppercase.

@item
A word in angle brackets, e.g., <return>, <down>, <left> or <f1>,
represents a function key. (Note that in the standard configuration,
the function key <return> and the control key RET are synonymous.).
You can use angle brackets on the words RET, SPC, etc., but they are
not required there.

@item
Keys can be written by their ASCII code, using a backslash followed by
up to six octal digits. This is the only way to represent keys with
codes above �.

@item
One or more prefixes M- (meta), C- (control), S- (shift), A- (alt), H-
(hyper), and s- (super) may precede a character or key notation. For
function keys, the prefixes may go inside or outside of the brackets:
C-<down> = <C-down>. The prefixes may be written in any order: M-C-x =
C-M-x. Prefixes are not allowed on multi-key words, e.g., C-abc,
except that the Meta prefix is allowed on a sequence of digits and
optional minus sign: M--123 = M-- M-1 M-2 M-3.

@item
The @code{^} notation for control characters also works: ^M = C-m.
@end itemize

@end defopt

@defopt ecb-major-modes-activate
List of major-modes for which ECB shoulb be activated or shown. Do not
mistake this option with @code{ecb-auto-activate}. The latter one is
for activating ECB after Emacs-startup (even without opening a buffer)
and this one is for defining for which major-modes ECB should be
activated if the mode goes active!

The behaviour is like follows: If a mode is contained in this option
ECB is activated after activating this mode (if ECB was deactivated
before) or the ECB-windows are shown if ECB was already active but its
windows were hidden. In every case ECB is activated with visible
ECB-windows afterwards!

For every major mode there can be specified an @code{ecb-layout-nr}:

@itemize @minus
@item @code{default}:
The value customized with @code{ecb-layout-nr} is choosen.
@item an integer:
ECB is activated with this layout-nr. This changes the value of
@code{ecb-layout-nr} but only for current emacs-session! But the
layout is only changed if ECB was activated, if just the ECB-windows
were shown, the current layout is used!
@end itemize

There are two additional options:

@itemize @minus
@item @code{none}:
No major-modes should activate ECB automatically.
@item a regexp:
This means all major-modes which are not listed in
@code{ecb-major-modes-deactivate} activate ECB except the symbol-name
of @code{major-mode} matches this regexp. If this option is set then
the default regexp excludes all Info- and customize-buffers because
this buffers should not change anything in the ECB-activation state.
@end itemize

Any auto. activation is only done if the current-frame is unsplitted
to avoid changing unnecessarily or unintentionally the frame-layout if
the user just jumps between different windows.
@end defopt

@defopt ecb-major-modes-deactivate
List of major-modes for which ECB should be deactivated or hidden.
Specify if ECB should be deactivated or at least hidden if a
major-mode is active. For each major-mode there must be added an
action what should be done:

@itemize @minus
@item @code{hide}:
ECB just hides all the ECB windows like with @code{ecb-hide-ecb-windows}.
@item @code{deactivate}:
ECB is completely deactivated after activating the major-mode.
@end itemize

There are two additional options:

@itemize @bullet
@item @code{none}:
No major-modes should deactivate/hide ECB automatically.

@item A cons for the meaning ``All except the activated modes of
@code{ecb-major-modes-activate}''. The car of this cons can be:

@itemize @minus
@item @code{hide-all-except-activated}:
All major-modes which are not listed in
@code{ecb-major-modes-activate} hide the ECB-windows.
@item @code{deactivate-all-except-activated}:
All major-modes which are not listed in
@code{ecb-major-modes-activate} deactivate ECB.
@end itemize

The cdr of this cons is a regexp: This means all major-modes which are
not listed in @code{ecb-major-modes-activate} deactivate/hide ECB
except the symbol-name of @code{major-mode} matches this regexp. If
this option is set then the default regexp excludes all Info- and
customize-buffers because this buffers should not change anything in
the ECB-activation state.
@end itemize

If a major-mode is listed in @code{ecb-major-modes-activate} as well
as in @code{ecb-major-modes-deactivate} then ECB is activated!

Any auto. deactivation/hiding is only done if the edit-window of ECB
is unsplitted and point is in the edit-window to avoid changing
unnecessarily or unintentionally the frame-layout if the user just
jumps between different edit-windows, the tree-windows and the
compile-window of ECB.
@end defopt

@defopt ecb-minor-mode-text
String to display in the mode line when ECB minor mode is active.
(When the string is not empty, make sure that it has a leading space.)
@end defopt

@defopt ecb-mode-line-prefixes
Prefixes shown in the modelines of the ECB buffers. The displayed
prefix then looks like: ``[ <PREFIX>[: ]]'', means if a prefix is
defined for an ECB buffer then a single space is prepended and if
there is additional text to display (e.g. the current directory in the
sources buffer) then also the string ``: `` is appended.
@end defopt

@defopt ecb-primary-mouse-jump-destination
Jump-destination of a primary mouse-button click (see
@code{ecb-primary-secondary-mouse-buttons}) in an ECB-window, if you
click onto a source or method or variable. Defines in which
edit-window (if splitted) ECB does the ``right'' action (opening the
source, jumping to a method/variable). There are two possible choices:

@itemize @minus
@item @code{left-top}:
Does the ``right'' action always in the left/topmost edit-window.
@item @code{last-point}:
Does the ``right'' action always in that edit-window which had the point
before.
@end itemize

If the edit-window is not splitted this setting doesn't matter.

Note: A click with the secondary mouse-button (see again
@code{ecb-primary-secondary-mouse-buttons} does the ``right'' action
always in the ``other'' window related to the setting in this option.
@end defopt

@defopt ecb-primary-secondary-mouse-buttons
Primary- and secondary mouse button for using the ECB-buffers. A click
with the primary button causes the main effect in each ECB-buffer:

@itemize @bullet
@item ECB Directories:
Expanding/collapsing nodes and displaying files in the ECB
Sources buffer.

@item ECB sources/history:
Opening the file in that edit-window specified by the option
@code{ecb-primary-mouse-jump-destination}.

@item ECB Methods:
Jumping to the method in that edit-window specified by the option
@code{ecb-primary-mouse-jump-destination}.
@end itemize

A click with the primary mouse-button while the SHIFT-key is pressed
only displays the complete clicked node in the minibuffer. This is
useful if the node is longer as the window-width of the ECB-window and
@code{ecb-truncate-lines} is not nil.

The secondary mouse-button is for opening (jumping to) the file in the
other window (see the documentation
@code{ecb-primary-mouse-jump-destination}).

The following combinations are possible:

@itemize @minus
@item
primary: mouse-2, secondary: C-mouse-2 (means mouse-2 while CTRL-key is
pressed). This is the default setting.
@item
primary: mouse-1, secondary: C-mouse-1
@item
primary: mouse-1, secondary: mouse-2
@end itemize

If you change this during ECB is activated you must deactivate and
activate ECB again to take effect
@end defopt

@defopt ecb-show-help-format
The format @code{ecb-show-help} shows its online help. Allowed values
are 'info (for the Info format) and 'html (for HTML format). If the
value is 'html then @code{browse-url-browser-function} says which
browser is used.
@end defopt

@defopt ecb-show-node-info-in-minibuffer
Define which node info should displayed in a tree-buffer after mouse
moving over the node or after a shift click onto the node.

For every tree-buffer you can define ``when'' node info should be
displayed:

@itemize @minus
@item @code{always}:
Node info is displayed by moving with the mouse over a node.
@item @code{if-too-long}:
Node info is only displayed by moving with the mouse over a node does
not fit into the window-width of the tree-buffer window. In the ECB
directories buffer this means also if a node is shortend or if the
node has an alias (see @code{ecb-source-path}).
@item @code{shift-click}:
Node info is only displayed after a shift click with the primary mouse
button onto the node.
@item @code{never}:
Node info is never displayed.
@end itemize

For every tree-buffer you can define what info should be displayed:

@itemize @bullet
@item Directory-buffer:
@itemize @minus
@item @code{name}: Only the full node-name is displayed.
@item @code{path}: The full-path of the node is displayed.
@end itemize

@item Sources-buffer:
@itemize @minus
@item @code{name}: Only the full node-name is displayed.
@item @code{file-info}: File infos for this file are displayed.
@item @code{file-info-full}: Fill infos incl. full path for this file are
displayed.
@end itemize
@item History-buffer: see Directories-buffer.
@item Methods-buffer:
@itemize @minus
@item @code{name}: Only the full node name is displayed.
@item @code{name+type}: The full name + the type of the node (function, class,
variable) is displayed.
@end itemize
@end itemize

Do NOT set this option directly via setq but use always customize!
@end defopt

@defopt ecb-temp-dir
Specify a directory where ECB can store temporary files.
@end defopt

@defopt ecb-tree-RET-selects-edit-window
In which tree-buffers RET should finally select an edit-window. If a
name of an ECB tree-buffer is contained in this list then hitting RET
in this tree-buffer selects as last action the right edit-window
otherwise only the right action is performed (opening a new source,
selecting a method etc.) but point stays in the tree-buffer.

A special remark for the @code{ecb-directories-buffer-name}: Of course
here the edit-window is only selected if
@code{ecb-show-sources-in-directories-buffer} is not nil (otherwise
this would not make any sense)!

The setting in this option is only the default for each tree-buffer.
With @code{ecb-toggle-RET-selects-edit-window} the behavior of RET can
be changed fast and easy in a tree-buffer without customizing this
option, but of course not for future Emacs sessions!
@end defopt

@defopt ecb-tree-expand-symbol-before
Show the expand symbol before the items in a tree.
@end defopt

@defopt ecb-tree-incremental-search
Enable incremental search in the ECB-tree-buffers. For a detailed
explanation see @ref{Using the keyboard}. If you change this
during ECB is activated you must deactivate and activate ECB again to
take effect.
@end defopt

@defopt ecb-tree-indent
Indent size for tree buffer. If you change this during ECB is
activated you must deactivate and activate ECB again to take effect.
@end defopt

@defopt ecb-tree-navigation-by-arrow
Enable smart navigation in the tree-windows by horiz. arrow-keys. If
not nil then the left- and right-arrow keys work in the ECB
tree-window in the following smart way if onto an expandable node:

@itemize @bullet
@item Left-arrow:
If node is expanded then it will be collapsed otherwise point jumps to
the next ``higher'' node in the hierarchical tree (higher means the next
higher tree-level or - if no higher level available - the next higher
node on the same level).

@item Right-arrow:
If node is not expanded then it will be expanded. Onto a not
expandable node the horizontal arrow-keys go one character in the
senseful correct direction.
@end itemize

If this option is changed the new value takes first effect after deactivating
ECB and then activating it again!
@end defopt

@defopt ecb-truncate-lines
Truncate lines in ECB buffers. If you change this during ECB is
activated you must deactivate and activate ECB again to take effect.
@end defopt

@defopt ecb-truncate-long-names
Truncate long names that don't fit in the width of the ECB windows. If
you change this during ECB is activated you must deactivate and
activate ECB again to take effect.
@end defopt

@defopt ecb-use-recursive-edit
Tell ECB to use a recursive edit so that it can easily be deactivated
by (keyboard-escape-quit).
@end defopt

@defopt ecb-version-check
If not @code{nil} ECB checks at start-time if the required versions of
semantic and eieio are installed and loaded into Emacs. It is strongly
recommended to set this option to not @code{nil}!
@end defopt

@defopt ecb-window-sync
Synchronize the ECB-windows automatically with current edit window. If
@code{always} then the synchronization takes place always a buffer
changes in the edit window, if @code{nil} then never. If a list of
major-modes then only if the @code{major-mode} of the new buffer
belongs NOT to this list.

But in every case the synchronization takes only place if the
current-buffer in the edit-window has a relation to files or
directories. Examples for the former one are all
programming-language-modes, @code{Info-mode} too, an example for the
latter one is @code{dired-mode}. For all major-modes related to
non-file/directory-buffers like @code{help-mode},
@code{customize-mode} and others never a synchronization will be done!

It's recommended to exclude at least @code{Info-mode} because it makes
no sense to synchronize the ECB-windows after calling the Info help.
Per default also @code{dired-mode} is excluded but it can also making
sense to synchronize the ECB-directories/sources windows with the
current directory in the dired-buffer.
@end defopt

@defopt ecb-window-sync-delay
Time Emacs must be idle before the ECB-windows are synchronized with
current edit window. If nil then there is no delay, means
synchronization takes place immediately. A small value of about 0.25
seconds saves CPU resources and you get even though almost the same
effect as if you set no delay.
@end defopt

@node ecb-directories, ecb-sources, ecb-general, Customizable options
@subsection Group ecb-directories

@noindent
This group contains the following options:

@defopt ecb-add-path-for-not-matching-files
Add path of a file to @code{ecb-source-path} if not already contained.
This is done during the auto. windows synchronization which happens if
a file is opened not via the file/directory-browser of ECB. In such a
situation ECB adds the path of the new file auto. to
@code{ecb-source-path} at least temporally for the current Emacs
session. This option defines two things:

@enumerate
@item
Should only the root-part (which means for unix-like systems always
'/' and for windows-like systems the drive) of the new file be added
as source-path to @code{ecb-source-path} or the whole directory-part?
@item
Should this path be added for future sessions too?
@end enumerate

The value of this option is a cons-cell where the car is a boolean for
1. and the cdr is a boolean for 2.

A value of not nil for the car (1.) is reasonably if a user often
opens files not via the ECB-browser which are not located in any of
the paths of @code{ecb-source-path} because then only one path for
each drive (windows) or the root-path (unix) is added to the directory
buffer of ECB.
@end defopt

@defopt ecb-auto-expand-directory-tree
Automatically expand the directory tree to the current source file.
There are three options:

@itemize @minus
@item @code{best}: Expand the best-matching source-path
@item @code{first}: Expand the first matching source-path
@item @code{nil}: Do not automatically expand the directory tree.
@end itemize
@end defopt

@defopt ecb-cache-directory-contents
Cache contents of directories.

This can be useful if @code{ecb-source-path} contains directories with
many files and subdirs, especially if these directories are mounted
net-drives (``many'' means here something > 1000, dependend of the speed
of the net-connection and the machine). For these directories
actualizing the sources- and/or directories- buffer of ECB (if
displayed in current layout!) can slow down dramatically so a caching
increases speed a lot.
 
The value of this option is a list where each element looks like:

@example
  (<dir-regexp> <filenumber threshold> <cache clearing> with
@end example

@table @code
@item <dir-regexp>:
Regular expression a directory must match to be cached.
@item <filenumber threshold>:
Number of directory contents must exceed this number.
@item <cache clearing>:
When the cache should be cleared:

@itemize @minus
@item @code{demand}:
Cache will only be cleared on user demand. See
@code{ecb-clear-directory-cache}.
@item @code{auto}:
Cache will be cleared if the contents of the directory have been
changed. ECB can detect this automatically. This works for Unix- but
probably not for Windows-systems, because Windows offers no way to
detect when the contents of a directory have been changed.
@item @code{<number>}:
First selection of directories matching the regexp after <number>
seconds after last caching time will rescan the directory.
@end itemize
@end table

A directory will we only be cached if and only if the directory-name
matches one rexexp of this option and it's content-number exceeds the
related threshold.

Example: A value of @code{("~/bigdir*" 1000 3600)} means the
contents of every subdirectory of the home-directory with name
beginning with ``bigdir'' will be cached if the directory contains more
than 1000 entries. One hour after the last caching time of such a
directory the next selection (clicking onto it in the
directories-window, changing buffers so the directory becomes current
in the directories-window, etc...) will rescan the directory and
update the cache.

@strong{Attention}: Currently the <cache clearing> part is ignored.
Currently the cache can only be cleared on demand and only the whole
cache can be cleared, see @code{ecb-clear-directory-cache}. This will
change in a future version.
@end defopt

@defopt ecb-directories-buffer-name
Name of the ECB directory buffer. Because it is not a normal buffer
for editing you should enclose the name with stars, e.g. `` *ECB
Directories*''.

If it is necessary for you you can get emacs-lisp access to the buffer-object of
the ECB-directory-buffer by this name, e.g. by a call of @code{set-buffer}.

Changes for this option at runtime will take affect only after
deactivating and then activating ECB again!
@end defopt

@defopt ecb-excluded-directories-regexp
Specifies directories that should not be included in the directories
list. The value of this variable should be a regular expression.
@end defopt

@defopt ecb-show-sources-in-directories-buffer
Show source files in directories buffer.
@end defopt

@defopt ecb-source-path
Paths where to find code sources. Each path can have an optional alias
that is used as it's display name. If no alias is set, the path is
used as display name.
@end defopt


@node ecb-sources, ecb-methods, ecb-directories, Customizable options
@subsection Group ecb-sources

@noindent
This group contains the following options:

@defopt ecb-show-source-file-extension
Show the file extension of source files.
@end defopt

@defopt ecb-source-file-regexps
Specifies which files are shown as source files. Consists of one
exclude regexp and one include regexp. A file is displayed in the
source-buffer of ECB iff: The file does not match the exclude regexp
OR the file matches the include regexp. There are three predefined and
useful combinations of an exclude and include regexp:

@itemize @bullet
@item All files

@item All, but no backup, object, lib or ini-files (except .emacs and .gnus). This
means all files except those starting with ``.'', ``#'' or ending with
``~'', ``.elc'', ``.obj'', ``.o'', ``.lib'', ``.dll'', ``.a'',
``.so''. (but including .emacs and .gnus)

@item Common source file types (.c, .java etc.)
@end itemize

In addition to these predefined values a custom exclude and include
combination can be defined.
@end defopt

@defopt ecb-sources-buffer-name
Name of the ECB sources buffer. Because it is not a normal buffer for
editing you should enclose the name with stars, e.g. ``*ECB Sources*''.

If it is necessary for you you can get emacs-lisp access to the
buffer-object of the ECB-sources-buffer by this name, e.g. by a call
of @code{set-buffer}.

Changes for this option at runtime will take affect only after
deactivating and then activating ECB again!
@end defopt

@defopt ecb-sources-sort-method
Defines how the source files are sorted.

@itemize @minus
@item @code{name}:
Sorting by name.
@item @code{extension}:
Sorting first by name and then by extension.
@item @code{nil}:
No sorting, means source files are displayed in the sequence returned
by @code{directory-files} (called without sorting).
@end itemize
@end defopt


@node ecb-methods, ecb-history, ecb-sources, Customizable options
@subsection Group ecb-methods

@noindent
This group contains the following options:

@defopt ecb-auto-update-methods-after-save
Automatically updating the ECB method buffer after saving the current
source-buffer.
@end defopt

@defopt ecb-bucket-token-display
How ECB displays bucket tokens in the ECB methods buffer. Bucket
tokens are tokens like ``[+] Variables'', ``[+] Dependencies'' etc. The
name of the bucket-token comes from semantic but you can define a
prefix, a suffix and a special face for the bucket token.

The default are empty prefix/suffix-strings and
'ecb-bucket-token-face'. But an alternative can be for example @code{("["
"]" nil)} which means no special face and a display like ``[+]
[<bucket-name>]''.
@end defopt

@defopt ecb-exclude-parents-regexp
Regexp which parent classes should not be shown in the methods buffer
(see also @code{ecb-show-parents}). If nil then all parents will be
shown if @code{ecb-show-parents} is not nil.
@end defopt

@defopt ecb-font-lock-tokens
Adds font-locking (means highlighting) to the ECB-method buffer.
@end defopt

@defopt ecb-highlight-token-header-after-jump
If not nil then highlight the token line in the source-buffer after
jumping to this method by clicking in the ECB-method-buffer onto this
method. For highlighting @code{ecb-token-header-face} is used.
@end defopt

@defopt ecb-highlight-token-with-point
How to highlight the method or variable under the cursor.

@itemize @minus
@item @code{highlight-scroll}:
Always scroll the method buffer, so the current method of the
edit-window is highlighted in the method-window.
@item @code{highlight}:
Only highlight the current method of the edit window in the
method window if the method is visible in the method-window.
@item @code{nil}:
No highlighting is done.
@end itemize

See also @code{ecb-highlight-token-with-point-delay}.
@end defopt

@defopt ecb-highlight-token-with-point-delay
Time Emacs must be idle before current token is highlighted. If nil
then there is no delay, means current token is highlighted
immediately. A small value of about 0.25 seconds saves CPU resources
and you get even though almost the same effect as if you set no delay.
But such a delay prevents also ``jumping backward/forward'' during
scrolling within java-classes if point goes out of method-definition
into class-definition. Therefore the default value is a delay of 0.25
seconds.
@end defopt

@defopt ecb-token-jump-narrow
When jumping to a token from the ECB methods buffer narrows the buffer
to only show that token. To display the entire buffer again, click on
a source file or call @code{widen} @kbd{C-x n w}.
@end defopt

@defopt ecb-token-jump-sets-mark
Jumping to a token from the ECB-method buffer now sets the mark so the
user can easily jump back.
@end defopt

@defopt ecb-methods-buffer-name
Name of the ECB methods buffer. Because it is not a normal buffer for
editing you should enclose the name with stars, e.g. `` *ECB
Methods*''.

If it is necessary for you you can get emacs-lisp access to the
buffer-object of the ECB-methods-buffer by this name, e.g. by a call
of @code{set-buffer}.

Changes for this option at runtime will take affect only after
deactivating and then activating ECB again!
@end defopt

@defopt ecb-post-process-semantic-tokenlist
Define mode-dependend postprocessing for the semantic-tokenlist. This
is an alist where the car is a major-mode symbol and the cdr is a
function-symbol of a function which should be used for post-processing
the tokenlist (returned by @code{semantic-bovinate-toplevel}) for a
buffer in this major-mode. Such a function is called with current
semantic tokenlist of current buffer and must return a valid tokenlist
again.

For oo-programming languages where the methods of a class can be
defined outside the class-definition (e.g. C++, Eieio) the function
@code{ecb-group-function-tokens-with-parents} can be used to get a
much better method-display in the methods-window of ECB, because all
method implementations of a class are grouped together.
@end defopt

@defopt ecb-scroll-window-after-jump
How to scroll the window when jumping to a token.
@end defopt

@defopt ecb-show-only-positioned-tokens
Show only nodes in the method-buffer which are ``jumpable''. If not nil
then ECB displays in the method-buffer only nodes which are
``jumpable'', i.e. after selecting it by clicking or with RET then ECB
jumps to the corresponding location in the edit-window. Example: With
CLOS or Eieio source-code there can exist some positionless nodes like
variable-attributes in a @code{defclass} form which are only displayed
if this option is nil. Displaying such nodes can be sensefull even if
they can not be jumped.
@end defopt

@defopt ecb-show-tokens
How to show tokens in the methods buffer. This variable is a list
where each element represents a type of tokens:

@example
(<token type> <display type> <sort method>)
@end example

The tokens in the methods buffer are displayed in the order as they appear in
this list.

@table @code
@item <token type>
A Semantic token type symbol (function, variable, rule, include etc.)
or one of the following:

@itemize @minus
@item @code{t}: All token types not specified anywhere else in the list.
@item @code{parent}: The parents of a type.
@end itemize

@item <display type>
A symbol which describes how the tokens of this type shall be shown:

@itemize @minus
@item @code{expanded}: The tokens are shown in an expanded node.
@item @code{collapsed}: The tokens are shown in a collapsed node.
@item @code{flattened}: The tokens are added to the parent node.
@item @code{hidden}: The tokens are not shown.
@end itemize

@item <sort method>
A symbol describing how to sort the tokens of this type:

@itemize @minus
@item @code{name}:
Sort by the token name.
@item @code{access}:
Sort by token access (public, protected, private) and then by name.
@item @code{nil}:
Don't sort tokens. They appear in the same order as in the source
buffer.
@end itemize
@end table

@end defopt

@defopt ecb-token-display-function
Function to use for displaying tokens in the methods buffer. This
functionality is set on major-mode base, i.e. for every major-mode a
different function can be used. The value of this option is a list of
cons-cells:

@itemize @minus
@item
The car is either a major-mode symbol or the special symbol 'default which
means if no function for a certain major-mode is defined then the cdr of
the 'default cons-cell is used.
@item
The cdr is the function used for displaying a token in the related
major-mode.
@end itemize

Every function is called with 3 arguments:

@enumerate
@item The token
@item The parent-token of token (can be nil)
@item The value of @code{ecb-font-lock-tokens}.
@end enumerate

Every function must return the display of the token as string,
colorized if the third argument is not nil.

The following functions are predefined:

@itemize @bullet
@item
All functions of @code{semantic-token->text-functions}.

@item
For every function in @code{semantic-token->text-functions} with name
``semantic-XYZ'' a function with name ``ecb-XYC'' is predefined. The
differences between the semantic- and the ECB-version are:

@itemize @minus
@item
The ECB-version displays for type tokens only the type-name and nothing
else (exception: In c++-mode a template specifier is appended to the
type-name if a template instead a normal class).
@item
The ECB-version displays type-tokens according to the setting in
@code{ecb-type-token-display}. This is useful for better recognizing
different classes, structs etc. in the ECB-method window.
@end itemize

For all tokens which are not types the display of the ECB-version is
identical to the semantic version. Example: For @code{semantic-name-nonterminal}
the pendant is @code{ecb-name-nonterminal}.
@end itemize

This functionality also allows the user to display tokens as UML. To
enable this functionality set the function for a major-mode (e.g.
@code{jde-mode}) to @code{semantic-uml-concise-prototype-nonterminal},
@code{semantic-uml-prototype-nonterminal}, or
@code{semantic-uml-abbreviate-nonterminal} or the ECB-versions of
these functions.

If the value is @code{nil}, i.e. neither a function for a major-mode
is defined nor the special 'default, then
@code{semantic-prototype-nonterminal} is used for displaying the
tokens.
@end defopt

@defopt ecb-token-jump-narrow
When jumping to a token from the ECB methods buffer narrows the buffer
to only show that token. To display the entire buffer again, click on
a source file or call @code{widen} (@kbd{C-x n w}).
@end defopt

@defopt ecb-token-jump-sets-mark
Jumping to a token from the ECB-method buffer now sets the mark so the
user can easily jump back.
@end defopt

@defopt ecb-type-token-display
How to display semantic type-tokens in the methods buffer. Normally
all token displaying, colorizing and facing is done by semantic
according to the value of @code{semantic-face-alist} and the semantic
display-function (e.g. one from
@code{semantic-token->text-functions}). But sometimes a finer
distinction in displaying the different type specifiers of type-tokens
can be usefull. For a description when this option is evaluated look
at @code{ecb-token-display-function}!

This functionality is set on a major-mode base, i.e. for every
major-mode a different setting can be used. The value of this option
is a list of cons-cells:

@itemize @bullet
@item
The car is either a major-mode symbol or the special symbol 'default which
means if no setting for a certain major-mode is defined then the cdr of
the 'default cons-cell is used.

@item
The cdr is a list of 3-element-lists:

@enumerate
@item
First entry is a semantic type specifier in string-form. Current
available type specifiers are for example ``class'', ``interface'',
``struct'', ``typedef'' and ``enum''. In addition to these ones there
is also a special ECB type specifier ``group'' which is related to
grouping tokens (see @code{ecb-post-process-semantic-tokenlist} and
@code{ecb-group-function-tokens-with-parents}). Any arbitrary
specifier can be set here but if it is not ``group'' or not known by
semantic it will be useless.
@item
Second entry is a flag which indicates if the type-specifier string
from (1.) itself should be removed (if there is any) from the display.
@item
Third entry is the face which is used in the ECB-method window to
display type-tokens with this specifier. ECB has some predefined faces
for this (@code{ecb-type-token-class-face},
@code{ecb-type-token-struct-face}, @code{ecb-type-token-typedef-face},
@code{ecb-type-token-enum-face} and @code{ecb-type-token-group-face})
but any arbitrary face can be set here. This face is merged with the
faces semantic already uses to display a token,
i.e. the result is a display where all face-attributes of the ECB-face
take effect plus all face-attributes of the semantic-faces which are not
set in the ECB-face (with XEmacs this merge doesn't work so here the
ECB-face replaces the semantic-faces; this may be fixed in future
versions).
@end enumerate
@end itemize

The default value is nil means there is no special ECB-displaying of
type-tokens in addition to the displaying and colorizing semantic
does. But a value like the following could be a usefull setting:

@example
((default
   ("class" t ecb-type-token-class-face)
   ("group" nil ecb-type-token-group-face))
 (c-mode
  ("struct" nil ecb-type-token-struct-face)
  ("typedef" nil ecb-type-token-typedef-face)))
@end example

This means that in @code{c-mode} only ``struct''s and ``typedef''s are
displayed with special faces (the specifiers itself are not removed)
and in all other modes ``class''es and grouping-tokens (see
@code{ecb-token-display-function},
@code{ecb-group-function-tokens-with-parents}) have special faces and
the ``class'' specifier-string is removed from the display.
@end defopt


@node ecb-history, ecb-layout, ecb-methods, Customizable options
@subsection Group ecb-history

@noindent
This group contains the following options:

@defopt ecb-clear-history-behavior
Defines which entries of the history buffer should be deleted if
@code{ecb-clear-history} is called. Three options are available:

@itemize @minus
@item @code{not-existing-buffers}:
All entries which represent a buffername not existing
anymore in the bufferlist will be cleared. Probably the most senseful value.
@item @code{existing-buffers}:
The opposite of 'not-existing-buffers.
@item @code{all}:
The whole history will be cleared.
@end itemize
@end defopt

@defopt ecb-history-buffer-name
Name of the ECB history buffer. Because it is not a normal buffer for
editing you should enclose the name with stars, e.g. ``*ECB
History*''.

If it is necessary for you you can get emacs-lisp access to the
buffer-object of the ECB-history-buffer by this name, e.g. by a call
of @code{set-buffer}.

Changes for this option at runtime will take affect only after
deactivating and then activating ECB again!
@end defopt

@defopt ecb-history-item-name
The name to use for items in the history buffer.
@end defopt

@defopt ecb-kill-buffer-clears-history
Define if @code{kill-buffer} should also clear the history. There are
three options:

@itemize @minus
@item @code{auto}:
Removes automatically the corresponding history-entry after the buffer
has been killed.
@item @code{ask}:
Asks, if the history-entry should be removed after the kill.
@item @code{nil}:
@code{kill-buffer} does not affect the history (this is the default).
@end itemize
@end defopt

@defopt ecb-sort-history-items
Sorts the items in the history buffer.
@end defopt

@node ecb-layout, ecb-face-options, ecb-history, Customizable options
@subsection Group ecb-layout

@noindent
This group contains the following options:

@defopt ecb-activate-before-new-frame-created-hook
Normal hook run before the new ECB-frame is created if
@code{ecb-new-ecb-frame} is not nil (otherwise this hook is not
evaluated).
@end defopt

@defopt ecb-advice-window-functions
Use the intelligent windows functions of ECB instead of the standard
Emacs functions. You can choose the following functions to be adviced
by ECB so they behave as if the edit-window(s) of ECB would be the
only windows(s) of the ECB-frame:

@itemize @bullet
@item @code{other-window}
For this one see also the option @code{ecb-other-window-jump-behavior}!
@item @code{delete-window}
@item @code{delete-other-windows}
@item @code{delete-windows-on}
@item @code{split-window-horizontally}
@item @code{split-window-vertically}
@item @code{switch-to-buffer}
@item @code{switch-to-buffer-other-window}
@item @code{other-window-for-scrolling}
If this advice is enabled then the following functions scroll always
the first edit-window if the edit-window is splitted, point stays in
the ``other'' edit-window and there is no durable compilation-window
(see @code{ecb-compile-window-height}):

@itemize @minus
@item @code{scroll-other-window}
@item @code{scroll-other-window-down}
@item @code{beginning-of-buffer-other-window}
@item @code{end-of-buffer-other-window}
@end itemize

This advice is per default not enabled.
@end itemize

For working most conveniantly with ECB it is the best to advice all
these functions, because then all the standard shortcuts of these
functions are also usable with ECB without doing anything else. Also
other packages can interact best with ECB if these functions are all
adviced. If these adviced functions are called in another frame than
the ECB-frame they behave all exactly like the not adviced versions!

But please read also the following:

Normally all packages should work correct with ECB and it�s adviced
functions but if there occur problems with a package cause of some of
these adviced functions ECB offers the following fall-back solution:

@enumerate
@item
Deactivate in @code{ecb-advice-window-functions} all the
adviced-functions which make problems with other packages.
@item
For every of the adviceable functions <adv-func> ECB offers a
interactively function named ``ecb-<adv-func>'' which does exactly the
same as the adviced version of <adv-func>. Use ``ecb-<adv-func>''
instead the original one to get the proper ECB behavior even if the
function is not adviced anymore.
@item
You can bind in @code{ecb-activate-hook} the standard-shortcut of
<adv-func> to ``ecb-<adv-func>'' and rebind it in
@code{ecb-deactivate-hook} to <adv-func>.
@item 
Now you have the best of both worlds: The problematic package works
and you have the ECB-behavior of <adv-func> as if it would be adviced.
@end enumerate

Here is an example: Suppose you must deactivating the advice for
@code{switch-to-buffer-other-window}. Then you deactivate this
function with this option and you can use
@code{ecb-switch-to-buffer-other-window} instead. Bind the shortcut
you normally use for @code{switch-to-buffer-other-window} to
@code{ecb-switch-to-buffer-other-window} (use @code{ecb-activate-hook}
for this) and rebind it to the original function in the
@code{ecb-deactivate-hook}.
@end defopt

@defopt ecb-compile-window-enlarge-by-select
The compile-window is auto. enlarged after selecting it. If not nil
then selecting the @code{ecb-compile-window} auto. enlarges it and
deselecting (means selecting another window after point was in
@code{ecb-compile-window}) auto. shrinks it. Enlarging and shrinking
the @code{ecb-compile-window} is done with
@code{ecb-toggle-enlarged-compilation-window}. See also the
documentation of this function!
@end defopt

@defopt ecb-compile-window-height
If you want a compilation window shown at the bottom of the ECB-layout
then set here the height of it (Default is a height of 5). If you
redraw the current layout with @code{ecb-redraw-layout} then the
compilation window (if any) has the heigth you set here. If the number
is less than 1.0 the height is a fraction of the frame height.

If you do not set a durable compilation window then doing a
compilation splits temporally the edit window vertically if the edit
window is not splitted already or uses the ``other'' edit window
temporally for comilation output if the edit window is already
splitted. This is the recommended value for this option!

Beware: If you set a durable compilation window then ECB can not
guarantee always behaving like a standard Emacs concerning displaying
temp-buffers and compilation-buffers. It should work in most cases but
maybe not in all. Just try it out.

See also the option @code{ecb-compile-window-temporally-enlarge} and
also the function @code{ecb-toggle-enlarged-compilation-window}!

@xref{Temp- and compile-buffers}.

Regardless of the settings you define here: If you have destroyed or
changed the ECB-screen-layout by any action you can always go back to
this layout with @code{ecb-redraw-layout}
@end defopt

@defopt ecb-compile-window-temporally-enlarge
Let Emacs temporally enlarge the compile-window of the ECB-layout.

This option has only an effect if @code{ecb-compile-window-height} is
not nil!

The following values are possible:

@itemize @minus
@item @code{after-compilation}:
After finishing the compilation-output and during jumping to the
errors ECB let temporally enlarge all compilation-buffers in
@code{ecb-compile-window} (e.g. compile- and grep-buffers) to
@code{compilation-window-height}. But be aware this setting is
currently not meaningful for temporary buffers like help-buffers
because these buffers currently enlarge always to
@code{temp-buffer-max-height}.

@item @code{after-selection}:
Selecting the @code{ecb-compile-window} auto. enlarges it and
deselecting (means leaving @code{ecb-compile-window}) auto. shrinks
it. Enlarging and shrinking the @code{ecb-compile-window} is done with
@code{ecb-toggle-enlarged-compilation-window}. See also the
documentation of this function! This is possible for all buffers in
@code{ecb-compile-window} not only for compilation-buffers!

@item @code{both}:
The combination of 'after-compilation and 'after-selection.

@item @code{nil}:
ECB tries to fix always the height of the @code{ecb-compile-window} at
the value of @code{ecb-compile-window-height}. But for all temporary
buffers (e.g. help-buffers) this is currently not possible.
@end itemize

To restore the ECB-layout after such a buffer-enlarge just call
@code{ecb-toggle-enlarged-compilation-window} or
@code{ecb-redraw-layout}.
@end defopt

@defopt ecb-hide-ecb-windows-hook
Hooks run after the ECB windows have been hidden either by
@code{ecb-toggle-ecb-windows} or @code{ecb-hide-ecb-windows}.
@end defopt

@defopt ecb-layout-always-operate-in-edit-window
Adviced window functions work always in the edit-window. If we are in
an ECB special buffer (methods, directories, etc), and any of the
adviced windowing functions is called (see
@code{ecb-advice-window-functions}), we will select the
@code{ecb-edit-window} first. This is useful if you have any functions
that use such functions and you don't want them to just error with a
method complaining that the current buffer can not be split, or
something similar.

Because this may not be desirable in all situations and all adviced
functions this can be enabled separately for every advisable function
(see also @code{ecb-advice-window-functions}). If the symbol of an
adviced function is contained in the value of this option, then the
edit-window is first selected otherwise either an error is reported or
some other special reaction; see the documentation of the adviced
functions for this.

For @code{other-window} and @code{other-window-for-scrolling} this
makes no sense, therefore you can not enable this for both of them.

Per default this is enabled for @code{delete-window},
@code{delete-other-windows}, @code{switch-to-buffer} and
@code{switch-to-buffer-other-window}.
@end defopt

@defopt ecb-layout-nr
Define the window layout of ECB. A positive integer which sets the
general layout. Currently there are 17 predefined layouts with index from 0 to
16. You can savely try out any of them by changing this value and saving it
only for the current session. If you are sure which layout you want
you can save it for future sessions. To get a picture of the layout
for index <index> call C-h f ecb-layout-function-<index>, e.g.
@code{ecb-layout-function-9}.

Currently available layouts (see the doc-string for a picture ot the
layout):

@code{ecb-layout-function-0}
@code{ecb-layout-function-1}
@code{ecb-layout-function-2}
@code{ecb-layout-function-3}
@code{ecb-layout-function-4}
@code{ecb-layout-function-5}
@code{ecb-layout-function-6}
@code{ecb-layout-function-7}
@code{ecb-layout-function-8}
@code{ecb-layout-function-9}
@code{ecb-layout-function-10}
@code{ecb-layout-function-11}
@code{ecb-layout-function-12}
@code{ecb-layout-function-13}
@code{ecb-layout-function-14}
@code{ecb-layout-function-15}
@code{ecb-layout-function-16}

Regardless of the settings you define here: If you have destroyed or
changed the ECB-screen-layout by any action you can always go back to
this layout with @code{ecb-redraw-layout}
@end defopt

@defopt ecb-layout-switch-to-compilation-window
Switch-to-buffer...-functions switch to @code{ecb-compile-window}. If
the buffer argument of @code{switch-to-buffer} or
@code{switch-to-buffer-other-window} is an compilation buffer as
defined with @code{ecb-compilation-buffer-p} we will select the
@code{ecb-compile-window} first. This is useful if you always want
your compilation buffers within the compilation window and now within
the edit window.

Note the difference between
@code{ecb-layout-always-operate-in-edit-window} and this option: If a
switch-to-buffer...-function is contained in the former one, then we
always jump first into the edit-window regardless of the destination
buffer. If also contained in this option then ECB checks the
destination buffer and then selects the @code{ecb-compile-window} if
it is a compilation-buffer in the meaning of
@code{ecb-compilation-buffer-p}!

Per default this is only enabled for @code{switch-to-buffer}. We
provide the option for @code{switch-to-buffer-other-window} too but
the assumption is that when a user asks for a buffer in another window
it should always be presented in another window.
@end defopt

@c @defopt ecb-layout-switch-to-compilation-window-auto-enlarge
@c When we automatically switch to a compilation buffer, automatically enlarge
@c the buffer with @code{ecb-toggle-enlarged-compilation-window}.
@c @end defopt

@defopt ecb-layout-window-sizes
Specifies the sizes of the ECB windows for each layout. The easiest
way to change this variable is to change the window sizes by dragging
the window borders using the mouse and then store the window sizes by
calling the @code{ecb-store-window-sizes} function. Next time the
layout is redrawn the values stored in this option will be used.

But be aware: These values are only suitable for the frame-size the
ecb-frame had at the time you store the values by calling
@code{ecb-store-window-sizes}. Therefore ensure always before calling
@code{ecb-store-window-sizes} that the ecb-frame has the size it has
normally during your work with ECB!.
@end defopt

@defopt ecb-new-ecb-frame
Create a new frame at activation time of ECB.
@end defopt

@defopt ecb-other-window-jump-behavior
Which windows of ECB should be accessible by the ECB-adviced function
@code{other-window}, an intelligent replacement for the Emacs standard
version of @code{other-window}. The following settings are possible:

@itemize @minus
@item @code{all}:
ECB will cycle through all windows of ECB, means it behaves like the
original @code{other-window}.
@item @code{only-edit}:
ECB will only cycle through the (max. 2) edit-windows of ECB.
@item @code{edit-and-compile}:
Like 'only-edit plus the compile window if any.
@end itemize
@end defopt

@defopt ecb-redraw-layout-quickly
If non-nil, we will attempt to redraw the layout quickly. Please read
also carefully the documentation of @code{ecb-redraw-layout}.
@end defopt

@defopt ecb-select-edit-window-on-redraw
Select the first edit window on @code{ecb-redraw-layout}.
@end defopt

@defopt ecb-show-ecb-windows-hook
Hooks run after the ECB windows have been shown either by
@code{ecb-toggle-ecb-windows} or @code{ecb-show-ecb-windows}.
@end defopt

@defopt ecb-split-edit-window
Sets how and if the edit window should be splitted. But be aware: This
option determines only if the edit-window should be splitted at
start-time of ECB.
@end defopt

@defopt ecb-toggle-layout-sequence
Toggle sequence for layout toggling with @code{ecb-toggle-layout}.
Every element of this list has to be a valid layout-number (see option
@code{ecb-layout-nr}).

You can add here as many layouts as you want but to use this option
most effective you should not add more than 2 or 3 layouts so every
layout can be accessed very fast by toggling with
@code{ecb-toggle-layout}. It is also senseful to add layouts which
have the same principal outline, i.e. all their tree-buffers are on
the same side of the frame and the tree-buffer-''column'' (or
-''row'') has identical size for the layouts.

Recommended values are for example:

@itemize @minus
@item (11 16), toggles between methods and directories/history
@item (11 15), toggles between methods and directories
@item (11 14), toggles between methods and history
@item (11 14 15), toggles between methods, history and directories
@end itemize

This option makes only sense if the value is a list with more than 1
element!
@end defopt

@defopt ecb-windows-height
The height of the ECB windows in lines when they are placed above or
below the edit window. If the number is less than 1.0 the width is a
fraction of the frame height.
@end defopt

@defopt ecb-windows-width
The width of the ECB windows in columns when they are placed to the
left or right of the edit window. If the number is less than 1.0 the
width is a fraction of the frame width.
@end defopt


@node ecb-face-options, ecb-faces, ecb-layout, Customizable options
@subsection Group ecb-face-options

@noindent
This group contains the following options:

@defopt ecb-directories-general-face
Basic face for the ECB directories buffer. It�s recommended to define
here the font-family, the font-size, the basic color etc.
@end defopt

@defopt ecb-directory-face
Define face used for highlighting current directory in the directories
buffer.
@end defopt

@defopt ecb-history-face
Define face used for highlighting current history-entry in the history
buffer.
@end defopt

@defopt ecb-history-general-face
Basic face for the ECB history buffer. It�s recommended to define here
the font-family, the font-size, the basic color etc.
@end defopt

@defopt ecb-method-face
Define face used for highlighting current method, class or variable in
the methods buffer.
@end defopt

@defopt ecb-methods-general-face
Basic face for the ECB methods buffer. It�s recommended to define here
the font-family, the font-size, the basic color etc.
@end defopt

@defopt ecb-source-face
Define face used for highlighting current source in the sources
buffer.
@end defopt

@defopt ecb-source-in-directories-buffer-face
Define a face for displaying sources in the directories buffer.
@end defopt

@defopt ecb-sources-general-face
Basic face for the ECB sources buffer. It�s recommended to define here
the font-family, the font-size, the basic color etc.
@end defopt

@defopt ecb-token-header-face
Define face used for highlighting the token header after jumping to it
by clicking onto a node in the methods buffer.
@end defopt



@node ecb-faces, ecb-download, ecb-face-options, Customizable options
@subsection Group ecb-faces

@noindent
This group contains the following faces:

@table @code
@item ecb-bucket-token-face:
Face which can be used for displaying bucket tokens in the methods
buffer. See also `ecb-bucket-token-display'.

@item ecb-default-general-face:
Basic face for all ECB tree-buffers.
It's recommended to define here the font-family, the font-size, the basic
color etc.

In GNU Emacs 21.X all faces (even the face
@code{ecb-default-highlight-face}) used in the ECB tree-buffers inherit
from this face. Therefore the default attributes like font etc. of a
face used in a tree-buffer can be very easily changed with face
@code{ecb-default-general-face}.

With XEmacs and GNU Emacs 20.X there is no inheritance-feature but the
options @code{ecb-directories-general-face},
@code{ecb-sources-general-face}, @code{ecb-methods-general-face} and
@code{ecb-history-general-face} offer the choice to use the face
@code{ecb-default-general-face} so also with XEmacs and GNU Emacs 20.X
the basic face-settings can be easily changed just by customizing the
face @code{ecb-default-general-face}!

@item ecb-default-highlight-face:
Define basic face for highlighting the selected node in an ECB
tree-buffer.

In GNU Emacs 21.X all highlighting faces in the ECB tree-buffers
inherit from this face. Therefore the default attributes like font
etc. of a face used in a tree-buffer for highlighting the current
token can be very easily changed with face
@code{ecb-default-highlight-face}.

With XEmacs and GNU Emacs 20.X there is no inheritance-feature but the
options @code{ecb-directory-face}, @code{ecb-source-face},
@code{ecb-method-face} and @code{ecb-history-face} offer the choice to
use the face @code{ecb-default-highlight-face} so also with XEmacs and
GNU Emacs 20.X the basic face-settings can be easily changed just by
customizing the face @code{ecb-default-highlight-face}!

@item ecb-directories-general-face:
Basic face for the ECB directories buffer. It�s recommended to define
here the font-family, the font-size, the basic color etc.

@item ecb-directory-face:
Define face used for highlighting current directory in the directories
buffer.

@item ecb-history-face:
Define face used for highlighting current history-entry in the history
buffer.

@item ecb-history-general-face:
Basic face for the ECB history buffer. It�s recommended to define here
the font-family, the font-size, the basic color etc.

@item ecb-method-face:
Define face used for highlighting current method, class or variable in
the methods buffer.

@item ecb-methods-general-face:
Basic face for the ECB methods buffer. It�s recommended to define here
the font-family, the font-size, the basic color etc.

@item ecb-source-face:
Define face used for highlighting current source in the sources
buffer.

@item ecb-source-in-directories-buffer-face:
Define a face for displaying sources in the directories buffer.

@item ecb-sources-general-face:
Basic face for the ECB sources buffer. It�s recommended to define here
the font-family, the font-size, the basic color etc.

@item ecb-token-header-face:
Define face used for highlighting the token header after jumping to it
by clicking onto a node in the methods buffer.

@item ecb-type-token-class-face:
Define face used with option @code{ecb-type-token-display}.

@item ecb-type-token-enum-face:
Define face used with option @code{ecb-type-token-display}.

@item ecb-type-token-group-face:
Define face used with option @code{ecb-type-token-display}.

@item ecb-type-token-interface-face:
Define face used with option @code{ecb-type-token-display}.

@item ecb-type-token-struct-face:
Define face used with option @code{ecb-type-token-display}.

@item ecb-type-token-typedef-face:
Define face used with option @code{ecb-type-token-display}.

@end table

Just call @code{customize-face <face-name>} to customize these faces
for your personal taste. Or customize the related option in the group
@ref{ecb-face-options}.

@node ecb-download, ecb-help, ecb-faces, Customizable options
@subsection Group ecb-download

@noindent
This group contains the following options:

@defopt ecb-download-delete-archive
Should the downloaded archive be deleted after successfull
installation or after failure during the installation-process.
Possible values are:

@itemize @minus
@item @code{only-after-success}:
Archive is only deleted after successfull installation
but not if a failure occurs during the installation process.
@item @code{always}:
Archive is also deleted if an error occurs.
@item @code{nil}:
Archive will never be deleted.
@end itemize
@end defopt

@defopt ecb-download-url
URL where downloadable ECB-versions are located. The ECB-archive-file
(e.g. ecb-1.70.tar.gz) will be appended to this URL and
@code{ecb-download-ecb} will try to download this archive.

Note: Normally this URL should never change but who knows...
@end defopt

@defopt ecb-download-version
Which version of ECB should be downloaded by @code{ecb-download-ecb}.
Valid values are either the string ``latest'' or a version number like
``1.70''. ECB creates automatically the correct URL for download, see
@code{ecb-download-ecb} (@pxref{Interactive ECB commands}).
@end defopt

@node ecb-help, , ecb-download, Customizable options
@subsection Group ecb-help

@noindent
This group contains the following options:


@defopt ecb-help-html-path
Path where the ECB online help in HTML format resides. This must be
the location of the file @file{ecb.html} which comes with the ECB
distribution. If is installed by unpacking the archive available on
the ECB website then this is the installation directory of ECB, i.e.
where the elisp files of ECB reside. If it is installed as
XEmacs-package (e.g. via the package manager of XEmacs) then this is
probably not the directory where the elisp files of ECB reside but
either the directory ``../../html/'' or ``../../etc/ecb/html/'' (both
relativ to the elisp directory of ECB).

The path can either be an absolute path or a path relativ to the directory
where the elisp files of ECB are.

Normally there should be no need to change this option!
@end defopt


@defopt ecb-help-info-path
Path where the ECB online help in info format resides. This must be
the location of the file @file{ecb.info} which comes with the ECB
distribution. If is installed by unpacking the archive available on
the ECB website then this is the installation directory of ECB, i.e.
where the elisp files of ECB reside. If it is installed as
XEmacs-package (e.g. via the package manager of XEmacs) then this is
probably not the directory where the elisp files of ECB reside but the
directory ``../../info/'' (relativ to the elisp directory of ECB).

The path can either be an absolute path or a path relativ to the directory
where the elisp files of ECB are.

Normally there should be no need to change this option!
@end defopt


@defopt ecb-show-help-format
The format @code{ecb-show-help} shows its online help. Allowed values
are 'info (for the Info format) and 'html (for HTML format). If the
value is 'html then @code{browse-url-browser-function} says which
browser is used.
@end defopt


@node Submitting problem report, Upgrading, Customizing, Top
@chapter Submitting a problem report

@cindex Bug report
@cindex Problem report
If you run into problems with ECB you can/should send a problem report
to the ECB mailing list @email{ecb-list@@lists.sourceforge.net}. ECB
offers you a command which does all necessary for you to send a
problem report. Just call @code{ecb-submit-problem-report}! Please read the
documentation of this command, @xref{Interactive ECB commands}.

This command creates a problem-report buffer for you. After that you
get a menu ``Mail'' (dependend on the mail-package used, the menu can
have a different name) with commands to send the problem report. But
for this the varibale @code{mail-user-agent} must be configured right for
your system. If you can�t get working this mechanism you can simply
copy the whole problem-report buffer after filling it out and sending
it with your standard mail-client to
@email{ecb-list@@lists.sourceforge.net}!

Please read also the documentation of the option @code{ecb-debug-mode} and
switch on the debug mode of ECB (also available in the Help-menu of
ECB!) before submitting a problem-report!

@node Upgrading, Tips and tricks, Submitting problem report, Top
@chapter Upgrading and downloading packages

This chapter describes all aspects of upgrading to a newer version of
ECB.

The first section describes how to download and install a new
package from the web, where ``package'' means either ECB itself or the
required libraries semantic and eieio.

After installing a new ECB-version ECB checks if the values of the
customized ECB-options are still compatible. If not ECB does some
smart things. This is the topic of the second section.

@menu
* Downloading new versions::    How to download newer versions of packages
* Auto. option-upgrading::      ECB can auto. upgrade your options
@end menu

@node Downloading new versions, Auto. option-upgrading, Upgrading, Upgrading
@section Downloading new versions of ECB and/or required packages


@cindex Download
ECB offers the possibility to upgrade to newer versions direct from
the ECB-website. This can be done if the following requirements are
satisfied:

@enumerate
@item A connection to the web is available
@item The tools ``wget'', ``tar'' and ``gzip'' are installed

With unix-systems these tools are in the
standard-distribution. If you are running any Microsoft Windows system
then you need cygwin@footnote{cygwin is available at
@ifhtml
@uref{http://cygwin.com/}
@end ifhtml
@ifnothtml
@url{http://cygwin.com/}
@end ifnothtml
} which offers these tools too. On every
system these tools must reside in the @env{PATH} environment-variable!

If you are behind a firewall and you have to use a proxy you maybe
need the following wget-configuration in your file @file{~/.wgetrc}:

@example
# Define your proxies (where 8080 and 8081 are examples
# for the portnumbers)
http_proxy = http://your.proxy.com:8080
ftp_proxy  = http://your.ftpproxy.com:8081
  
# If you do not want to use proxy at all, set this to off.
use_proxy = on
@end example
@end enumerate

If these requirements are satisfied you can download and install both
ECB itself and also the required versions of semantic and eieio:

@itemize @bullet
@item Download a new ECB-version with @code{ecb-download-ecb}:

A description for this command you will find in @ref{Interactive ECB
commands}. Check also the options of the customize-group
'ecb-download' (@pxref{ecb-download}).

ECB will try to download the file:

@example
<URL><PACKAGE>-<VERSION>.tar.gz
@end example

where

@table @code
@item URL
Value of the option @code{ecb-download-url}.
@item PACKAGE
The string ``ecb''
@item VERSION
Value of the option @code{ecb-download-version}.
@end table

@anchor{Download required packages}
@item Download and install of required packages:

ECB checks at start-time if the required author-versions of semantic
and eieio (see @file{README}) are installed and loaded into Emacs. If
not you will be asked if you want auto. download and install them. If
you confirm this and the download and install succeeds then you will
get a message-buffer which tells you something like:

@example
---------------------------------------------------------------
Current state of the required packages semantic and eieio:

- Required version of semantic (author version): 1.4:
  Installed in /usr/local/lib/site-lisp/semantic-1.4
  
- Required version of eieio (author version): 0.17:
  Correct version already loaded!

After adding the new directory to your @code{load-path} and then
restarting Emacs the new package(s) can be activated.
---------------------------------------------------------------
@end example

@strong{Note}: By setting the option @code{ecb-version-check} to
@code{nil} you can prevent ECB from checking correct versions of
semantic and eieio, but it's strongly recommended not to do this!

@end itemize

@node Auto. option-upgrading, , Downloading new versions, Upgrading
@section Automatic upgrading of options

@menu
* User interface::              Options and commands you should know
* Background information::      Maybe some interesting informations
@end menu

@node User interface, Background information, Auto. option-upgrading, Auto. option-upgrading
@subsection User interface for option-upgrading

There are two interactive commands (@pxref{Interactive ECB commands}):

@itemize @minus
@item @code{ecb-upgrade-options}:
Does all necessary beginning with a incompatibility-check for all
options, upgrading/resetting incompatible options and ending with the
display of all upgraded or reset options.

@item @code{ecb-display-upgraded-options}:
Displays a temp. buffer with all upgraded or resetted ECB-options with
their old and new values.
@end itemize

If the option @code{ecb-auto-compatibility-check} has a non-nil value
(which is the default) then ECB does all this stuff automatically at
startup. This is very recommended!

If you are interested in some background information, read
@ref{Background information}!

@node Background information, , User interface, Auto. option-upgrading
@subsection Background information

Big packages like ECB will be enhanced and developed continously so
sometimes a new version must be released. Such packages offer in
general a lot of customizable options so probably some of these
options change the type or are renamed because the old type and/or
name of the option makes no sense in the new release.

Especially options which have changed the type of their value are now
a problem for the user which want to upgrade to the latest
ECB-version: If the user has saved a certain value for option X in its
file @file{.emacs} but the type of this saved value doesn't match the
new defined type in the defcustom-form after an ECB-upgrade then there
can occur serious problems like ECB can not be started anymore or even
Emacs can not be startet without errors.

Until now there was only one way to fix these problems: The user must
manually edit his file @file{.emacs} and remove all entries for
options which have now another type. After this and after restarting
Emacs the new default-values of the type-changed options in the new
ECB-release are active and the user can go on using Emacs and ECB. But
this approach to fix the incompatible-option-problem has two serious
drawbacks:

@enumerate
@item
The user must manually edit the customize-section in his file
@file{.emacs}. This should normally not be done and if then only by
old-handed Emacs-users.

@item
The customized value of the option X in the old-release (with the old
type) is lost because after removing the related entry from the
file @file{.emacs} the new default-value is active, so the user must
re-customize the option X.
@end enumerate

Ok, this is one half of the option-upgrade-problem but a new ECB-release
can also rename a option from name X to name Y because the new name Y makes
much more sense and/or is more mnemonic. If only the name has changed but
not the type this is not a serious problem like above but also annoying
because the customized value of the old-option X takes no effect in the new
release but instead the default-value of the new-option Y is now active.
But nevertheless this problem has the drawback number 2 (see above).

The last category of upgrade-problems is a renamed option which has also
changed its type.

@noindent
ECB has a solution for all these problems:

@itemize @bullet

@item
It checks all customized values of all ECB-optons if they are still
type-compatible. If not then it tries to upgrade the old-value to the
new value-type and if this is not possible then it resets the option
to the new default value and store it via customize in the .emacs-file
(or in any file which is used for customized options).

@item
It offers a special constant @code{ecb-upgradable-option-alist} which
allows the ECB-maintainers to define special transformings for renamed
options so even the value of an old-option X can be savely transformed
to the new-option Y and the old setting is not lost.
@end itemize

All these checks and transformings are done at beginning of activating
ECB - if the option @code{ecb-auto-compatibility-check} is not nil. If
ECB has recognized incompatible or renamed options it does its
upgrading/reseting-job so all ECB-options have correct types so ECB
can start correct. After ECB is started it displays a list of all
upgraded or resetted option with their old and new values.


@node Tips and tricks, Elisp programming, Upgrading, Top
@chapter Tips and tricks

This chapter contains some tips and tricks how to deal best with some
situations.

@menu
* Changing faces::              Changing faces in the ECB tree-buffers
* Small screens::               Working with small screens
* Simulating speedbar::         Simulating speedbar without an extra frame
* Integrating speedbar::        Integrating speedbar in the ECB-frame
* Optimize scrolling::          Optimize scrolling in the edit-window
* Large directories::           Working with large directories
* Using eshell::                Optimal using of eshell in ECB
@end menu

@node Changing faces, Small screens, Tips and tricks, Tips and tricks
@section Changing faces in the ECB tree-buffers

@cindex Faces
There are two basic faces:

@itemize @bullet
@item @code{ecb-default-general-face}:

Basic face for displaying an ECB-tree-buffer.
@item @code{ecb-default-highlight-face}:
Basic face for highlighting the current node in an ECB-tree-buffer.
@end itemize

With this faces you can change the basic attributes easily and fast
for ALL ECB-tree-buffers. But you are also able to display each
ECB-tree-buffer with different faces. For further details see the
doc-strings of the faces @code{ecb-default-general-face} and
@code{ecb-default-highlight-face} (just call @code{customize-face} to see the
doc-strings). The options of the group 'ecb-face-options' are also
interesting.


@node Small screens, Simulating speedbar, Changing faces, Tips and tricks
@section Working with small screens

@cindex Small screen
If your screen is very small so you need every sqare-centimeter for
displaying the buffer which you want to edit, ECB offers you a special
layouts, where only the ECB-methods buffer is displayed on top or on
left-side. Here comes what you should/can do to work best with ECB in
such a situation:

@itemize @bullet
@item First customize your ECB:

@enumerate
@item
Customize @code{ecb-layout-nr} to layout nr. 10 (on top) or nr. 11 (on left-side)

@item
Ensure that @code{ecb-compile-window-height} is nil.

@item
Optional: Ajust the @code{ecb-windows-height} resp. @code{ecb-windows-width}.

@item
Save your changes.
@end enumerate

@item To edit your buffers:
Call @code{ecb-toggle-ecb-windows} (also available via the menu ``ECB'' and
by @kbd{C-c . w}) or @code{ecb-hide-ecb-windows} to hide the ECB-method buffer
so you get all the place of your screen for editing.

@item To browse and select functions:
Call @code{ecb-toggle-ecb-windows} or @code{ecb-show-ecb-windows} to
make the ECB-method buffer visible if not already. If you want select
a method/variable with the keyboard instead with the mouse you should
read the section @ref{Using the keyboard} in this online help!
@end itemize

The possibility of hiding temporally the ECB windows like described
above is also useful for all the other layouts.


@node Simulating speedbar, Integrating speedbar, Small screens, Tips and tricks
@section Simulating speedbar without an extra frame

@cindex Speedbar
You can simulate a speedbar-like layout within ONE frame by doing the
following:

@enumerate
@item
Customize @code{ecb-layout-nr} to layout nr. 11, 14, 15 or 16 dependend to
what you like.

@item
Optional: Ensure that @code{ecb-compile-window-height} is nil.

@item
Optional: Ajust the @code{ecb-windows-width}.

@item
Optional: Customize @code{ecb-toggle-layout-sequence} and toggle very fast
between several layouts by @code{ecb-toggle-layout}. See the doc-strings!

@item
Optional: Customize @code{ecb-show-sources-in-directories-buffer} to not
nil if the choosen layout (see 1. and 4.) contains a
directories-tree-buffer.

@item
Save your changes.
@end enumerate

@node Integrating speedbar, Optimize scrolling, Simulating speedbar, Tips and tricks
@section Integrating speedbar in the ECB-frame

This feature will be first available in future versions of ECB.

@node Optimize scrolling, Large directories, Integrating speedbar, Tips and tricks
@section Optimize scrolling in the edit-window

@cindex Scrolling
Emacs 20.X seems to slow down scrolling if there is a horizontal split
in the frame and/or a lot of overlays in the buffer which is scrolled.
This is independend of ECB! But because almost all layouts of ECB uses
horizontal splits of the frame and because ECB is based on semantic
which uses overlays intensively there can be poor scrolling
performance in large buffers, especially with java-buffers in
@code{jde-mode}.

This scrolling performance can be increased a lot if the options
@code{scroll-conservatively} and @code{scroll-step} are set appropriatelly: The
former one should have a value of 0 during ECB is active and the
latter one a value of either 0 or > 1 (the exact value depends on the
power of your machine).

As far as we know this is not a problem of Emacs 21.X or XEmacs. With
these versions of Emacs there should be no scrolling problem even with
@code{scroll-step} has value 1.


@node Large directories, Using eshell, Optimize scrolling, Tips and tricks
@section Working with large directories

If @code{ecb-source-path} contains directories with many files and subdirs,
especially if these directories are mounted net-drives (``many'' means
here something > 1000, dependend on the speed of the net-connection
and the machine), actualizing the sources- and/or directories- buffer
of ECB (if displayed in current layout!) can slow down dramatically.
If this is a problem the contents of certain directories can be cached
which increases the speed a lot. See @code{ecb-cache-directory-contents}.

@node Using eshell, , Large directories, Tips and tricks
@section Optimal using of eshell in ECB

Documentation currently not available.

@node Elisp programming, Conflicts and bugs, Tips and tricks, Top
@chapter Entry points for elisp programmers

This chapter describes how ECB can be used/programmed/driven by an
elisp-program. This contains:

@menu
* List of variables::           Which variables an elisp-program can use
* List of hooks::               All available hooks
* tree-buffer::                 Some words to the tree-buffer-library
* Adviced functions::           How to deal with the adviced functions
* New layouts::                 How to program new layouts
@end menu

@node List of variables, List of hooks, Elisp programming, Elisp programming
@section Variables for elisp-programs

Variables an elisp-program can use:

@itemize @bullet
@item @code{ecb-source-path-functions}
@end itemize

Look at the documentation of these variables to get a description.

@node List of hooks, tree-buffer, List of variables, Elisp programming
@section Available hooks of ECB

The following hooks are available:

@cindex Hooks
@itemize @bullet
@item @code{ecb-activate-before-new-frame-created-hook}
@item @code{ecb-activate-before-layout-draw-hook}
@item @code{ecb-activate-hook}
@item @code{ecb-deactivate-hook}
@item @code{ecb-show-ecb-windows-hook}
@item @code{ecb-hide-ecb-windows-hook}
@item @code{ecb-current-buffer-sync-hook}
@end itemize

Look at the documentation of these hooks to get a description.

@node tree-buffer, Adviced functions, List of hooks, Elisp programming
@section The library tree-buffer.el

The library tree-buffer.el is ECB independent and can be used for
other applications too. But such an application is not allowed to use
any of the variables of tree-buffer.el especially not the variable
@strong{tree-buffers}!

@code{tree-buffers}: Only for internal use. It contains all
tree-buffers of current Emacs-instance, means @strong{all}
tree-buffers of @strong{all} applications which uses currently
tree-buffers. Every application must store its own collection of
tree-buffers in an own variable! For example: ECB stores its
tree-buffer set in @code{ecb-tree-buffers}!

An application may only use the methods tree-buffer.el provides but no
internal variables!

@node Adviced functions, New layouts, tree-buffer, Elisp programming
@section How to deal with the adviced window-functions

ECB offers for packages which work during activated ECB three macros
for easy temporally@footnote{I.e. regardless of the settings in
@code{ecb-advice-window-functions}!} using all original-functions, all
adviced functions or only some adviced functions:

@itemize @minus
@item @code{ecb-with-original-functions}
@item @code{ecb-with-adviced-functions}
@item @code{ecb-with-some-adviced-functions}
@end itemize

For a detailed explanation of each macro read the documentation with
@code{describe-function}!

@node New layouts, , Adviced functions, Elisp programming
@section How to program new layouts

Documentation will be added in future!

@node Conflicts and bugs, Command Index, Elisp programming, Top
@chapter Known conflicts and bugs of ECB

This chapter describes all already known conflicts with other packages
and also the known (and currently unfixed) bugs of ECB. If possible
then a practicable solution or workaround is described.

@menu
* Conflicts::                   Known conflicts with other packages
* Bugs::                        Known bugs
@end menu

@node Conflicts, Bugs, Conflicts and bugs, Conflicts and bugs
@section Known conflicts with other packages

Here is a list of known conflicts of ECB with other packages and
helpful solutions/hints/workarounds:

@menu
* VC::                          Conflicts with Version Control
* follow-mouse::                Conflicts with follow-mouse.el
* avoid::                       Conflicts with avoid.el
* calendar::                    Conflicts with calendar.el
* calculator::                  Conflicts with calculator.el
@end menu

@node VC, follow-mouse, Conflicts, Conflicts
@subsection Package VC (Version Control)

@cindex VC package
@cindex Version control
The variable @code{vc-delete-logbuf-window} must be set to nil during
active ECB. This can be done with the hooks mentioned in @ref{Elisp
programming}.

@node follow-mouse, avoid, VC, Conflicts
@subsection Package follow-mouse.el

@noindent
The following is only relevant for Emacs 20.X!

@cindex follow-mouse package
ECB works very well with follow-mouse if follow-mouse is turned on
@strong{BEFORE} ECB is activated (e.g. within the
@code{ecb-activate-hook}). But if you activate follow-mouse first
after ECB is already activated, then the follow-mouse stuff prevents
the complete node-name to be displayed in the echo-area if mouse moves
over it. Because ECB has a much more intelligent mouse tracking
mechanism than follow-mouse the follow-mouse stuff profit from ECB and
works even better and saver as without activated ECB!


@node avoid, calendar, follow-mouse, Conflicts
@subsection Package avoid.el

@cindex avoid package
With GNU Emacs 20.X ECB must deactivate @code{mouse-avoidance-mode} if the
option @code{ecb-show-node-info-in-minibuffer} activates for at least one
ECB tree-buffer 'if-too-long or 'always. This is done automatically
but only as long ECB is activated.


@node calendar, calculator, avoid, Conflicts
@subsection Package calendar.el

@cindex calendar package
With activated ECB @code{calendar} does not shrink it�s window to the small
size but splits the window equally. But if you add this to your
@file{.emacs} it works:

@example
(add-hook 'initial-calendar-window-hook
          (function (lambda ()
                      (when (and ecb-minor-mode
                                 (ecb-point-in-edit-window))
                        ;; if no horizontal split then nothing
                        ;; special to do
                        (or (= (frame-width) (window-width))
                            (shrink-window (- (window-height) 9))))
                     )))
@end example

@node calculator, , calendar, Conflicts
@subsection Package calculator.el

@cindex calculator package
If the edit-window is already splitted then calling @code{calculator} uses
the whole ``other'' edit-window for the calculator. With an unsplitted
edit-window the calculator window has it�s normal size of about 2
lines. Therefore it�s recommended to set @code{calculator-electric-mode}
during ECB activation to not nil so calculator uses always the
echo-area instead of creating a new small window!

@node Bugs, , Conflicts, Conflicts and bugs
@section Known bugs

This section describes all currently known bugs of ECB. The
maintainers of ECB try to fix these bugs as soon as possible.

@node Command Index, Option Index, Conflicts and bugs, Top
@unnumbered Command Index

@noindent
This index contains all user commands of ECB:

@printindex fn

@node Option Index, Concept Index, Command Index, Top
@unnumbered Option Index

@noindent
This index contains all customizable options of ECB:

@printindex vr

@node Concept Index, , Option Index, Top
@unnumbered Concept Index

@printindex cp

@contents

@bye
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