wxPython / demo / Menu.py

import  time
import  wx
import  images

#-------------------------------------------------------------------

class MyFrame(wx.Frame):

    def __init__(self, parent, id, log):
        wx.Frame.__init__(self, parent, id, 'Playing with menus', size=(500, 250))
        self.log = log
        self.CenterOnScreen()

        self.CreateStatusBar()
        self.SetStatusText("This is the statusbar")

        tc = wx.TextCtrl(self, -1, """
A bunch of bogus menus have been created for this frame.  You
can play around with them to see how they behave and then
check the source for this sample to see how to implement them.
""", style=wx.TE_READONLY|wx.TE_MULTILINE)

        # Prepare the menu bar
        menuBar = wx.MenuBar()

        # 1st menu from left
        menu1 = wx.Menu()
        menu1.Append(101, "&Mercury", "This the text in the Statusbar")
        menu1.Append(102, "&Venus", "")
        menu1.Append(103, "&Earth", "You may select Earth too")
        menu1.AppendSeparator()
        menu1.Append(104, "&Close", "Close this frame")
        # Add menu to the menu bar
        menuBar.Append(menu1, "&Planets")

        # 2nd menu from left
        menu2 = wx.Menu()
        menu2.Append(201, "Hydrogen")
        menu2.Append(202, "Helium")
        # a submenu in the 2nd menu
        submenu = wx.Menu()
        submenu.Append(2031,"Lanthanium")
        submenu.Append(2032,"Cerium")
        submenu.Append(2033,"Praseodymium")
        menu2.AppendMenu(203, "Lanthanides", submenu)
        # Append 2nd menu
        menuBar.Append(menu2, "&Elements")

        menu3 = wx.Menu()
        # Radio items
        menu3.Append(301, "IDLE", "a Python shell using tcl/tk as GUI", wx.ITEM_RADIO)
        menu3.Append(302, "PyCrust", "a Python shell using wxPython as GUI", wx.ITEM_RADIO)
        menu3.Append(303, "psi", "a simple Python shell using wxPython as GUI", wx.ITEM_RADIO)
        menu3.AppendSeparator()
        menu3.Append(304, "project1", "", wx.ITEM_NORMAL)
        menu3.Append(305, "project2", "", wx.ITEM_NORMAL)
        menuBar.Append(menu3, "&Shells")

        menu4 = wx.Menu()
        # Check menu items
        menu4.Append(401, "letters", "abcde...", wx.ITEM_CHECK)
        menu4.Append(402, "digits", "123...", wx.ITEM_CHECK)
        menu4.Append(403, "letters and digits", "abcd... + 123...", wx.ITEM_CHECK)
        menuBar.Append(menu4, "Chec&k")

        menu5 = wx.Menu()
        # Show how to put an icon in the menu
        item = wx.MenuItem(menu5, 500, "&Smile!\tCtrl+S", "This one has an icon")
        item.SetBitmap(images.Smiles.GetBitmap())
        menu5.AppendItem(item)

        # Shortcuts
        menu5.Append(501, "Interesting thing\tCtrl+A", "Note the shortcut!")
        menu5.AppendSeparator()
        menu5.Append(502, "Hello\tShift+H")
        menu5.AppendSeparator()
        menu5.Append(503, "remove the submenu")
        menu6 = wx.Menu()
        menu6.Append(601, "Submenu Item")
        menu5.AppendMenu(504, "submenu", menu6)
        menu5.Append(505, "remove this menu")
        menu5.Append(506, "this is updated")
        menu5.Append(507, "insert after this...")
        menu5.Append(508, "...and before this")
        menuBar.Append(menu5, "&Fun")

        self.SetMenuBar(menuBar)

        # Menu events
        self.Bind(wx.EVT_MENU_HIGHLIGHT_ALL, self.OnMenuHighlight)

        self.Bind(wx.EVT_MENU, self.Menu101, id=101)
        self.Bind(wx.EVT_MENU, self.Menu102, id=102)
        self.Bind(wx.EVT_MENU, self.Menu103, id=103)
        self.Bind(wx.EVT_MENU, self.CloseWindow, id=104)

        self.Bind(wx.EVT_MENU, self.Menu201, id=201)
        self.Bind(wx.EVT_MENU, self.Menu202, id=202)
        self.Bind(wx.EVT_MENU, self.Menu2031, id=2031)
        self.Bind(wx.EVT_MENU, self.Menu2032, id=2032)
        self.Bind(wx.EVT_MENU, self.Menu2033, id=2033)

        self.Bind(wx.EVT_MENU, self.Menu301To303, id=301)
        self.Bind(wx.EVT_MENU, self.Menu301To303, id=302)
        self.Bind(wx.EVT_MENU, self.Menu301To303, id=303)
        self.Bind(wx.EVT_MENU, self.Menu304, id=304)
        self.Bind(wx.EVT_MENU, self.Menu305, id=305)

        # Range of menu items
        self.Bind(wx.EVT_MENU_RANGE, self.Menu401To403, id=401, id2=403)

        self.Bind(wx.EVT_MENU, self.Menu500, id=500)
        self.Bind(wx.EVT_MENU, self.Menu501, id=501)
        self.Bind(wx.EVT_MENU, self.Menu502, id=502)
        self.Bind(wx.EVT_MENU, self.TestRemove, id=503)
        self.Bind(wx.EVT_MENU, self.TestRemove2, id=505)
        self.Bind(wx.EVT_MENU, self.TestInsert, id=507)
        self.Bind(wx.EVT_MENU, self.TestInsert, id=508)

        wx.GetApp().Bind(wx.EVT_UPDATE_UI, self.TestUpdateUI, id=506)

    # Methods

    def OnMenuHighlight(self, event):
        # Show how to get menu item info from this event handler
        id = event.GetMenuId()
        item = self.GetMenuBar().FindItemById(id)
        if item:
            text = item.GetText()
            help = item.GetHelp()

        # but in this case just call Skip so the default is done
        event.Skip() 


    def Menu101(self, event):
        self.log.write('Welcome to Mercury\n')

    def Menu102(self, event):
        self.log.write('Welcome to Venus\n')

    def Menu103(self, event):
        self.log.write('Welcome to the Earth\n')

    def CloseWindow(self, event):
        self.Close()

    def Menu201(self, event):
        self.log.write('Chemical element number 1\n')

    def Menu202(self, event):
        self.log.write('Chemical element number 2\n')

    def Menu2031(self, event):
        self.log.write('Element number 57\n')

    def Menu2032(self, event):
        self.log.write('Element number 58\n')

    def Menu2033(self, event):
        self.log.write('Element number 59\n')

    def Menu301To303(self, event):
        id = event.GetId()
        self.log.write('Event id: %d\n' % id)

    def Menu304(self, event):
        self.log.write('Not yet available\n')

    def Menu305(self, event):
        self.log.write('Still vapour\n')

    def Menu401To403(self, event):
        self.log.write('From a EVT_MENU_RANGE event\n')

    def Menu500(self, event):
        self.log.write('Have a happy day!\n')

    def Menu501(self, event):
        self.log.write('Look in the code how the shortcut has been realized\n')

    def Menu502(self, event):
        self.log.write('Hello from Jean-Michel\n')


    def TestRemove(self, evt):
        mb = self.GetMenuBar()
        submenuItem = mb.FindItemById(601)

        if not submenuItem:
            return

        submenu = submenuItem.GetMenu()
        menu = submenu.GetParent()

        # This works
        #menu.Remove(504)

        # this also works
        menu.RemoveItem(mb.FindItemById(504))  

        # This doesn't work, as expected since submenuItem is not on menu        
        #menu.RemoveItem(submenuItem)   


    def TestRemove2(self, evt):
        mb = self.GetMenuBar()
        mb.Remove(4)


    def TestUpdateUI(self, evt):
        text = time.ctime()
        evt.SetText(text)


    def TestInsert(self, evt):
        theID = 508
        # get the menu
        mb = self.GetMenuBar()
        menuItem = mb.FindItemById(theID)
        menu = menuItem.GetMenu()

        # figure out the position to insert at
        pos = 0

        for i in menu.GetMenuItems():
            if i.GetId() == theID:
                break

            pos += 1

        # now insert the new item
        ID = wx.NewId()
        item = wx.MenuItem(menu, ID, "NewItem " + str(ID))
        menu.InsertItem(pos, item)


#---------------------------------------------------------------------------

class TestPanel(wx.Panel):
    def __init__(self, parent, log):
        self.log = log
        wx.Panel.__init__(self, parent, -1)

        b = wx.Button(self, -1, "Show the Menu sample", (50,50))
        self.Bind(wx.EVT_BUTTON, self.OnButton, b)


    def OnButton(self, evt):
        win = MyFrame(self, -1, self.log)
        win.Show(True)


#---------------------------------------------------------------------------


def runTest(frame, nb, log):
    win = TestPanel(nb, log)
    return win

#-------------------------------------------------------------------


overview = """\
A demo of using wx.MenuBar and wx.Menu in various ways.

A menu is a popup (or pull down) list of items, one of which may be selected 
before the menu goes away (clicking elsewhere dismisses the menu). Menus may be 
used to construct either menu bars or popup menus.

A menu item has an integer ID associated with it which can be used to identify 
the selection, or to change the menu item in some way. A menu item with a special 
identifier -1 is a separator item and doesn't have an associated command but just 
makes a separator line appear in the menu.

Menu items may be either normal items, check items or radio items. Normal items 
don't have any special properties while the check items have a boolean flag associated 
to them and they show a checkmark in the menu when the flag is set. wxWindows 
automatically toggles the flag value when the item is clicked and its value may 
be retrieved using either IsChecked method of wx.Menu or wx.MenuBar itself or by 
using wxEvent.IsChecked when you get the menu notification for the item in question.

The radio items are similar to the check items except that all the other items 
in the same radio group are unchecked when a radio item is checked. The radio group 
is formed by a contiguous range of radio items, i.e. it starts at the first item of 
this kind and ends with the first item of a different kind (or the end of the menu). 
Notice that because the radio groups are defined in terms of the item positions 
inserting or removing the items in the menu containing the radio items risks to not 
work correctly. Finally note that the radio items are only supported under Windows 
and GTK+ currently.

"""


if __name__ == '__main__':
    import sys,os
    import run
    run.main(['', os.path.basename(sys.argv[0])] + sys.argv[1:])
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