Source

cappuccino-docs / cappuccino docs / cappuccino.org / learn / documentation / _c_p_j_s_o_n_p_connection_8j_source.html

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">

<!-- Mirrored from cappuccino.org/learn/documentation/_c_p_j_s_o_n_p_connection_8j_source.html by HTTrack Website Copier/3.x [XR&CO'2006], Mon, 20 Sep 2010 02:19:30 GMT -->
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<title>Cappuccino API: Foundation/CPJSONPConnection.j Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body>
<!-- Generated by Doxygen 1.6.1 -->
<div class="navigation" id="top">
  <div class="tabs">
    <ul>
      <li><a href="main.html"><span>Main&nbsp;Page</span></a></li>
      <li><a href="pages.html"><span>Related&nbsp;Pages</span></a></li>
      <li><a href="modules.html"><span>Modules</span></a></li>
      <li><a href="annotated.html"><span>Classes</span></a></li>
      <li class="current"><a href="files.html"><span>Files</span></a></li>
    </ul>
  </div>
  <div class="tabs">
    <ul>
      <li><a href="files.html"><span>File&nbsp;List</span></a></li>
      <li><a href="globals.html"><span>File&nbsp;Members</span></a></li>
    </ul>
  </div>
<h1>Foundation/CPJSONPConnection.j</h1><a href="_c_p_j_s_o_n_p_connection_8j.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * CPJSONPConnection.j</span>
<a name="l00003"></a>00003 <span class="comment"> * Foundation</span>
<a name="l00004"></a>00004 <span class="comment"> *</span>
<a name="l00005"></a>00005 <span class="comment"> * Created by Ross Boucher.</span>
<a name="l00006"></a>00006 <span class="comment"> * Copyright 2008, 280 North, Inc.</span>
<a name="l00007"></a>00007 <span class="comment"> *</span>
<a name="l00008"></a>00008 <span class="comment"> * This library is free software; you can redistribute it and/or</span>
<a name="l00009"></a>00009 <span class="comment"> * modify it under the terms of the GNU Lesser General Public</span>
<a name="l00010"></a>00010 <span class="comment"> * License as published by the Free Software Foundation; either</span>
<a name="l00011"></a>00011 <span class="comment"> * version 2.1 of the License, or (at your option) any later version.</span>
<a name="l00012"></a>00012 <span class="comment"> *</span>
<a name="l00013"></a>00013 <span class="comment"> * This library is distributed in the hope that it will be useful,</span>
<a name="l00014"></a>00014 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00015"></a>00015 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00016"></a>00016 <span class="comment"> * Lesser General Public License for more details.</span>
<a name="l00017"></a>00017 <span class="comment"> *</span>
<a name="l00018"></a>00018 <span class="comment"> * You should have received a copy of the GNU Lesser General Public</span>
<a name="l00019"></a>00019 <span class="comment"> * License along with this library; if not, write to the Free Software</span>
<a name="l00020"></a>00020 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00021"></a>00021 <span class="comment"> */</span>
<a name="l00022"></a>00022  
<a name="l00023"></a>00023 @<span class="keyword">import</span> &lt;Foundation/<a class="code" href="class_c_p_object.html" title="The root class from which most classes are subclassed.">CPObject</a>.j&gt;
<a name="l00024"></a>00024 
<a name="l00025"></a>00025 
<a name="l00026"></a><a class="code" href="_c_p_j_s_o_n_p_connection_8j.html#af99614a5cdb762bbca54e2e78bd4af5d">00026</a> <a class="code" href="_c_p_j_s_o_n_p_connection_8j.html#af99614a5cdb762bbca54e2e78bd4af5d">CPJSONPConnectionCallbacks</a> = {};
<a name="l00027"></a>00027 
<a name="l00028"></a><a class="code" href="_c_p_j_s_o_n_p_connection_8j.html#a06e7fe1c93d8cf52b6a284d65002aea5">00028</a> <a class="code" href="_c_p_j_s_o_n_p_connection_8j.html#a06e7fe1c93d8cf52b6a284d65002aea5">CPJSONPCallbackReplacementString</a> = <span class="stringliteral">@&quot;${JSONP_CALLBACK}&quot;</span>;
<a name="l00029"></a>00029 
<a name="l00042"></a><a class="code" href="class_c_p_j_s_o_n_p_connection.html">00042</a> <span class="keyword">@implementation </span><a class="code" href="class_c_p_j_s_o_n_p_connection.html" title="Allows cross domain connections using JSONP protocol.">CPJSONPConnection</a> : <a class="code" href="class_c_p_object.html" title="The root class from which most classes are subclassed.">CPObject</a>
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044     <a class="code" href="class_c_p_u_r_l_request.html" title="Contains data obtained during a request made with CPURLConnection.">CPURLRequest</a>    _request;
<a name="l00045"></a>00045     <span class="keywordtype">id</span>              _delegate;
<a name="l00046"></a>00046     
<a name="l00047"></a>00047     <a class="code" href="class_c_p_string.html" title="An immutable string (collection of characters).">CPString</a>        _callbackParameter;
<a name="l00048"></a>00048     DOMElement      _scriptTag;
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050 
<a name="l00052"></a><a class="code" href="class_c_p_j_s_o_n_p_connection.html#acb4b69eb5147f203f815b6dbd68fdff1">00052</a> + (<a class="code" href="class_c_p_j_s_o_n_p_connection.html" title="Allows cross domain connections using JSONP protocol.">CPJSONPConnection</a>)sendRequest:(<a class="code" href="class_c_p_u_r_l_request.html" title="Contains data obtained during a request made with CPURLConnection.">CPURLRequest</a>)aRequest callback:(<a class="code" href="class_c_p_string.html" title="An immutable string (collection of characters).">CPString</a>)callbackParameter delegate:(<span class="keywordtype">id</span>)aDelegate 
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054     <span class="keywordflow">return</span> [<span class="keyword">self</span> <a class="code" href="class_c_p_j_s_o_n_p_connection.html#a86a8bdcebda7a0919849500561dd7440">connectionWithRequest</a>:aRequest <a class="code" href="class_c_p_j_s_o_n_p_connection.html#a86a8bdcebda7a0919849500561dd7440">callback</a>:callbackParameter <a class="code" href="class_c_p_j_s_o_n_p_connection.html#a86a8bdcebda7a0919849500561dd7440">delegate</a>:aDelegate];
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056 
<a name="l00057"></a><a class="code" href="class_c_p_j_s_o_n_p_connection.html#a86a8bdcebda7a0919849500561dd7440">00057</a> + (<a class="code" href="class_c_p_j_s_o_n_p_connection.html" title="Allows cross domain connections using JSONP protocol.">CPJSONPConnection</a>)connectionWithRequest:(<a class="code" href="class_c_p_u_r_l_request.html" title="Contains data obtained during a request made with CPURLConnection.">CPURLRequest</a>)aRequest callback:(<a class="code" href="class_c_p_string.html" title="An immutable string (collection of characters).">CPString</a>)callbackParameter delegate:(<span class="keywordtype">id</span>)aDelegate
<a name="l00058"></a>00058 {
<a name="l00059"></a>00059     <span class="keywordflow">return</span> [[[<span class="keyword">self</span> class] alloc] initWithRequest:aRequest callback:callbackParameter delegate:aDelegate startImmediately:YES];;
<a name="l00060"></a>00060 }
<a name="l00061"></a>00061 
<a name="l00062"></a><a class="code" href="class_c_p_j_s_o_n_p_connection.html#a6e4223996758d33b2dd1c8636e7bbe48">00062</a> - (id)initWithRequest:(<a class="code" href="class_c_p_u_r_l_request.html" title="Contains data obtained during a request made with CPURLConnection.">CPURLRequest</a>)aRequest callback:(<a class="code" href="class_c_p_string.html" title="An immutable string (collection of characters).">CPString</a>)aString delegate:(<span class="keywordtype">id</span>)aDelegate 
<a name="l00063"></a>00063 {
<a name="l00064"></a>00064     <span class="keywordflow">return</span> [<span class="keyword">self</span> <a class="code" href="class_c_p_j_s_o_n_p_connection.html#a4cfc2bd2bc74589e0c5c54b93726d31c">initWithRequest</a>:aRequest <a class="code" href="class_c_p_j_s_o_n_p_connection.html#a4cfc2bd2bc74589e0c5c54b93726d31c">callback</a>:aString <a class="code" href="class_c_p_j_s_o_n_p_connection.html#a4cfc2bd2bc74589e0c5c54b93726d31c">delegate</a>:aDelegate <a class="code" href="class_c_p_j_s_o_n_p_connection.html#a4cfc2bd2bc74589e0c5c54b93726d31c">startImmediately</a>: NO];
<a name="l00065"></a>00065 }
<a name="l00066"></a>00066 
<a name="l00067"></a><a class="code" href="class_c_p_j_s_o_n_p_connection.html#a4cfc2bd2bc74589e0c5c54b93726d31c">00067</a> - (id)initWithRequest:(<a class="code" href="class_c_p_u_r_l_request.html" title="Contains data obtained during a request made with CPURLConnection.">CPURLRequest</a>)aRequest callback:(<a class="code" href="class_c_p_string.html" title="An immutable string (collection of characters).">CPString</a>)aString delegate:(<span class="keywordtype">id</span>)aDelegate startImmediately:(BOOL)shouldStartImmediately
<a name="l00068"></a>00068 {
<a name="l00069"></a>00069     <span class="keyword">self</span> = [<span class="keyword">super</span> init];
<a name="l00070"></a>00070     
<a name="l00071"></a>00071     _request = aRequest;
<a name="l00072"></a>00072     _delegate = aDelegate;
<a name="l00073"></a>00073     
<a name="l00074"></a>00074     _callbackParameter = aString;
<a name="l00075"></a>00075     
<a name="l00076"></a>00076     <span class="keywordflow">if</span> (!_callbackParameter &amp;&amp; [[_request URL] absoluteString].indexOf(<a class="code" href="_c_p_j_s_o_n_p_connection_8j.html#a06e7fe1c93d8cf52b6a284d65002aea5">CPJSONPCallbackReplacementString</a>) &lt; 0)
<a name="l00077"></a>00077          [<a class="code" href="class_c_p_exception.html" title="Used to implement exception handling (creating &amp;amp; raising).">CPException</a> <a class="code" href="class_c_p_exception.html#ac8f34bd11868822e26a7b952810128b8">raise</a>:CPInvalidArgumentException <a class="code" href="class_c_p_exception.html#ac8f34bd11868822e26a7b952810128b8">reason</a>:@&quot;JSONP source specified without callback parameter or CPJSONPCallbackReplacementString in URL.&quot;];
<a name="l00078"></a>00078 
<a name="l00079"></a>00079     <span class="keywordflow">if</span>(shouldStartImmediately)
<a name="l00080"></a>00080         [<span class="keyword">self</span> <a class="code" href="class_c_p_j_s_o_n_p_connection.html#a2ee39d8225428479df829f15a470ad7e">start</a>];
<a name="l00081"></a>00081         
<a name="l00082"></a>00082     <span class="keywordflow">return</span> <span class="keyword">self</span>;
<a name="l00083"></a>00083 }
<a name="l00084"></a>00084 
<a name="l00085"></a><a class="code" href="class_c_p_j_s_o_n_p_connection.html#a2ee39d8225428479df829f15a470ad7e">00085</a> - (void)start
<a name="l00086"></a>00086 {
<a name="l00087"></a>00087     <span class="keywordflow">try</span>
<a name="l00088"></a>00088     {
<a name="l00089"></a>00089         <a class="code" href="_c_p_j_s_o_n_p_connection_8j.html#af99614a5cdb762bbca54e2e78bd4af5d">CPJSONPConnectionCallbacks</a>[&quot;callback&quot;+[<span class="keyword">self</span> UID]] = function(data)
<a name="l00090"></a>00090         {
<a name="l00091"></a>00091             [_delegate connection:self didReceiveData:data];
<a name="l00092"></a>00092             [<span class="keyword">self</span> <a class="code" href="class_c_p_j_s_o_n_p_connection.html#aea3b69f0b3bba4ee550a0fc034f83776">removeScriptTag</a>];
<a name="l00093"></a>00093     
<a name="l00094"></a>00094             [[<a class="code" href="class_c_p_run_loop.html" title="The main run loop for the application.">CPRunLoop</a> <a class="code" href="class_c_p_run_loop.html#aba93f1cef957bad4353ce060981c0b9d">currentRunLoop</a>] <a class="code" href="class_c_p_run_loop.html#aad8e51e44d4c17634d8c45c1ca540217">limitDateForMode</a>:CPDefaultRunLoopMode];
<a name="l00095"></a>00095         };
<a name="l00096"></a>00096 
<a name="l00097"></a>00097         var head = document.getElementsByTagName(<span class="stringliteral">&quot;head&quot;</span>).item(0),
<a name="l00098"></a>00098             source = [[_request URL] absoluteString];
<a name="l00099"></a>00099 
<a name="l00100"></a>00100         <span class="keywordflow">if</span> (_callbackParameter)
<a name="l00101"></a>00101         {
<a name="l00102"></a>00102             source += (source.indexOf(<span class="charliteral">&apos;?&apos;</span>) &lt; 0) ? <span class="stringliteral">&quot;?&quot;</span> : <span class="stringliteral">&quot;&amp;&quot;</span>;
<a name="l00103"></a>00103             source += _callbackParameter+<span class="stringliteral">&quot;=CPJSONPConnectionCallbacks.callback&quot;</span>+[<span class="keyword">self</span> UID];
<a name="l00104"></a>00104         }
<a name="l00105"></a>00105         <span class="keywordflow">else</span> <span class="keywordflow">if</span> (source.indexOf(<a class="code" href="_c_p_j_s_o_n_p_connection_8j.html#a06e7fe1c93d8cf52b6a284d65002aea5">CPJSONPCallbackReplacementString</a>) &gt;= 0)
<a name="l00106"></a>00106         {
<a name="l00107"></a>00107             source = [source stringByReplacingOccurrencesOfString:CPJSONPCallbackReplacementString withString:&quot;CPJSONPConnectionCallbacks.callback&quot;+[<span class="keyword">self</span> UID]];
<a name="l00108"></a>00108         }
<a name="l00109"></a>00109         <span class="keywordflow">else</span>
<a name="l00110"></a>00110             <span class="keywordflow">return</span>;
<a name="l00111"></a>00111         
<a name="l00112"></a>00112         _scriptTag = document.createElement(<span class="stringliteral">&quot;script&quot;</span>);
<a name="l00113"></a>00113         _scriptTag.setAttribute(<span class="stringliteral">&quot;type&quot;</span>, <span class="stringliteral">&quot;text/javascript&quot;</span>);
<a name="l00114"></a>00114         _scriptTag.setAttribute(<span class="stringliteral">&quot;charset&quot;</span>, <span class="stringliteral">&quot;utf-8&quot;</span>);
<a name="l00115"></a>00115         _scriptTag.setAttribute(<span class="stringliteral">&quot;src&quot;</span>, source);
<a name="l00116"></a>00116         
<a name="l00117"></a>00117         head.appendChild(_scriptTag);
<a name="l00118"></a>00118     }
<a name="l00119"></a>00119     <span class="keywordflow">catch</span> (exception)
<a name="l00120"></a>00120     {
<a name="l00121"></a>00121         [_delegate connection: self didFailWithError: exception];
<a name="l00122"></a>00122         [<span class="keyword">self</span> <a class="code" href="class_c_p_j_s_o_n_p_connection.html#aea3b69f0b3bba4ee550a0fc034f83776">removeScriptTag</a>];
<a name="l00123"></a>00123     }
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125 
<a name="l00126"></a><a class="code" href="class_c_p_j_s_o_n_p_connection.html#aea3b69f0b3bba4ee550a0fc034f83776">00126</a> - (void)removeScriptTag
<a name="l00127"></a>00127 {
<a name="l00128"></a>00128     var head = document.getElementsByTagName(<span class="stringliteral">&quot;head&quot;</span>).item(0);
<a name="l00129"></a>00129     
<a name="l00130"></a>00130     <span class="keywordflow">if</span>(_scriptTag &amp;&amp; _scriptTag.parentNode == head)
<a name="l00131"></a>00131         head.removeChild(_scriptTag);
<a name="l00132"></a>00132 
<a name="l00133"></a>00133     <a class="code" href="_c_p_j_s_o_n_p_connection_8j.html#af99614a5cdb762bbca54e2e78bd4af5d">CPJSONPConnectionCallbacks</a>[&quot;callback&quot;+[<span class="keyword">self</span> UID]] = nil;
<a name="l00134"></a>00134     <span class="keyword">delete</span> <a class="code" href="_c_p_j_s_o_n_p_connection_8j.html#af99614a5cdb762bbca54e2e78bd4af5d">CPJSONPConnectionCallbacks</a>[&quot;callback&quot;+[<span class="keyword">self</span> UID]];
<a name="l00135"></a>00135 }
<a name="l00136"></a>00136 
<a name="l00137"></a><a class="code" href="class_c_p_j_s_o_n_p_connection.html#aa915f8b07110dff1355c52905acc47fc">00137</a> - (void)cancel
<a name="l00138"></a>00138 {
<a name="l00139"></a>00139     [<span class="keyword">self</span> <a class="code" href="class_c_p_j_s_o_n_p_connection.html#aea3b69f0b3bba4ee550a0fc034f83776">removeScriptTag</a>];
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141 
<a name="l00142"></a>00142 <span class="keyword">@end</span>
</pre></div></div>
<hr size="1"/><address style="text-align: right;"><small>Generated on Tue Apr 6 10:32:56 2010 for Cappuccino API by&nbsp;
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.1 </small></address>
</body>

<!-- Mirrored from cappuccino.org/learn/documentation/_c_p_j_s_o_n_p_connection_8j_source.html by HTTrack Website Copier/3.x [XR&CO'2006], Mon, 20 Sep 2010 02:19:30 GMT -->
</html>