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<h1>/home/koen/project/wt/public-git/wt/examples/simplechat/SimpleChatWidget.C</h1><a href="SimpleChatWidget_8C.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"> * Copyright (C) 2008 Emweb bvba, Heverlee, Belgium.</span>
<a name="l00003"></a>00003 <span class="comment"> *</span>
<a name="l00004"></a>00004 <span class="comment"> * See the LICENSE file for terms of use.</span>
<a name="l00005"></a>00005 <span class="comment"> */</span>
<a name="l00006"></a>00006
<a name="l00007"></a>00007 <span class="preprocessor">#include "<a class="code" href="SimpleChatWidget_8h.html">SimpleChatWidget.h</a>"</span>
<a name="l00008"></a>00008 <span class="preprocessor">#include "<a class="code" href="SimpleChatServer_8h.html">SimpleChatServer.h</a>"</span>
<a name="l00009"></a>00009
<a name="l00010"></a>00010 <span class="preprocessor">#include <Wt/WApplication></span>
<a name="l00011"></a>00011 <span class="preprocessor">#include <Wt/WContainerWidget></span>
<a name="l00012"></a>00012 <span class="preprocessor">#include <Wt/WEnvironment></span>
<a name="l00013"></a>00013 <span class="preprocessor">#include <Wt/WHBoxLayout></span>
<a name="l00014"></a>00014 <span class="preprocessor">#include <Wt/WVBoxLayout></span>
<a name="l00015"></a>00015 <span class="preprocessor">#include <Wt/WLabel></span>
<a name="l00016"></a>00016 <span class="preprocessor">#include <Wt/WLineEdit></span>
<a name="l00017"></a>00017 <span class="preprocessor">#include <Wt/WText></span>
<a name="l00018"></a>00018 <span class="preprocessor">#include <Wt/WTextArea></span>
<a name="l00019"></a>00019 <span class="preprocessor">#include <Wt/WPushButton></span>
<a name="l00020"></a>00020 <span class="preprocessor">#include <Wt/WCheckBox></span>
<a name="l00021"></a>00021
<a name="l00022"></a>00022 <span class="preprocessor">#include <iostream></span>
<a name="l00023"></a>00023
<a name="l00024"></a>00024 <span class="keyword">using namespace </span>Wt;
<a name="l00025"></a>00025
<a name="l00026"></a><a class="code" href="classSimpleChatWidget.html#a1cdfd4ad4b7442304c6f44b3346f2e0">00026</a> <a class="code" href="classSimpleChatWidget.html#a1cdfd4ad4b7442304c6f44b3346f2e0" title="Create a chat widget that will connect to the given server.">SimpleChatWidget::SimpleChatWidget</a>(<a class="code" href="classSimpleChatServer.html" title="A simple chat server.">SimpleChatServer</a>& server,
<a name="l00027"></a>00027 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html">Wt::WContainerWidget</a> *parent)
<a name="l00028"></a>00028 : <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html">WContainerWidget</a>(parent),
<a name="l00029"></a>00029 server_(server),
<a name="l00030"></a>00030 app_(<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WApplication.html">WApplication</a>::instance()),
<a name="l00031"></a>00031 messageReceived_(<span class="stringliteral">"sounds/message_received.mp3"</span>)
<a name="l00032"></a>00032 {
<a name="l00033"></a>00033 <a class="code" href="classSimpleChatWidget.html#596f7cbf70f45da9af017ac9d6f55ebc">user_</a> = <a class="code" href="classSimpleChatWidget.html#b29db4cbc3935964daf6b6c264ce68d3">server_</a>.<a class="code" href="classSimpleChatServer.html#bf692567706118193111c2b2589c8d3f" title="Get a suggestion for a guest user name.">suggestGuest</a>();
<a name="l00034"></a>00034 <a class="code" href="classSimpleChatWidget.html#71d98bf20e007af247f3b5a74f35efa2" title="Show a simple login screen.">letLogin</a>();
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="comment">// this widget supports server-side updates its processChatEvent()</span>
<a name="l00037"></a>00037 <span class="comment">// method is connected to a slot that is triggered from outside this</span>
<a name="l00038"></a>00038 <span class="comment">// session's event loop (usually because another user enters text).</span>
<a name="l00039"></a>00039 <a class="code" href="classSimpleChatWidget.html#f27ada14cf08ce58437c2f3f72f0c4d1">app_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WApplication.html#d9631ca64e68d30d40cb49c90e55223d">enableUpdates</a>();
<a name="l00040"></a>00040 }
<a name="l00041"></a>00041
<a name="l00042"></a><a class="code" href="classSimpleChatWidget.html#fdf56768400ee025d0b71ccce476b1bf">00042</a> <a class="code" href="classSimpleChatWidget.html#fdf56768400ee025d0b71ccce476b1bf" title="Delete a chat widget.">SimpleChatWidget::~SimpleChatWidget</a>()
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <a class="code" href="classSimpleChatWidget.html#bff498a5a43a7e0caac5f2140f14e301">logout</a>();
<a name="l00045"></a>00045 }
<a name="l00046"></a>00046
<a name="l00047"></a><a class="code" href="classSimpleChatWidget.html#71d98bf20e007af247f3b5a74f35efa2">00047</a> <span class="keywordtype">void</span> <a class="code" href="classSimpleChatWidget.html#71d98bf20e007af247f3b5a74f35efa2" title="Show a simple login screen.">SimpleChatWidget::letLogin</a>()
<a name="l00048"></a>00048 {
<a name="l00049"></a>00049 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html#608f748cbdda763f1a11556ddad9fbe1">clear</a>();
<a name="l00050"></a>00050
<a name="l00051"></a>00051 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WVBoxLayout.html">WVBoxLayout</a> *vLayout = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WVBoxLayout.html">WVBoxLayout</a>();
<a name="l00052"></a>00052 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html#1c84e0ffe330d4798f0ce217f75be08c">setLayout</a>(vLayout, <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/namespaceWt.html#b8f772c69bc8180c31f9e4f4593b143fd033ef69b45d0b75633be34168c9b606">AlignLeft</a> | <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/namespaceWt.html#b8f772c69bc8180c31f9e4f4593b143f58fe5182bd266132c59718c6d30945a9">AlignTop</a>);
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WHBoxLayout.html">WHBoxLayout</a> *hLayout = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WHBoxLayout.html">WHBoxLayout</a>();
<a name="l00055"></a>00055 vLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#062d26b432841995a0be7b7d7aac6413">addLayout</a>(hLayout);
<a name="l00056"></a>00056
<a name="l00057"></a>00057 hLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#7c1ec58e25d0b7add93f5f4342844db6">addWidget</a>(<span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WLabel.html">WLabel</a>(<span class="stringliteral">"User name:"</span>), 0, <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/namespaceWt.html#b8f772c69bc8180c31f9e4f4593b143f2ed90f01dbf74049f428d33769d48e3f">AlignMiddle</a>);
<a name="l00058"></a>00058 hLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#7c1ec58e25d0b7add93f5f4342844db6">addWidget</a>(<a class="code" href="classSimpleChatWidget.html#6216e8cf4d368c1550562e1c5525d34b">userNameEdit_</a> = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WLineEdit.html">WLineEdit</a>(<a class="code" href="classSimpleChatWidget.html#596f7cbf70f45da9af017ac9d6f55ebc">user_</a>), 0, <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/namespaceWt.html#b8f772c69bc8180c31f9e4f4593b143f2ed90f01dbf74049f428d33769d48e3f">AlignMiddle</a>);
<a name="l00059"></a>00059 <a class="code" href="classSimpleChatWidget.html#6216e8cf4d368c1550562e1c5525d34b">userNameEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WFormWidget.html#fe33f5c3658ddbd08fec9f6c203c578b">setFocus</a>();
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WPushButton.html">WPushButton</a> *b = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WPushButton.html">WPushButton</a>(<span class="stringliteral">"Login"</span>);
<a name="l00062"></a>00062 hLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#7c1ec58e25d0b7add93f5f4342844db6">addWidget</a>(b, 0, <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/namespaceWt.html#b8f772c69bc8180c31f9e4f4593b143f2ed90f01dbf74049f428d33769d48e3f">AlignMiddle</a>);
<a name="l00063"></a>00063 hLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#811708ce9336d753c20aaedc14b00d5f">addStretch</a>(1);
<a name="l00064"></a>00064
<a name="l00065"></a>00065 b-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WInteractWidget.html#e11e050cce0d4a8f742afa3ef92bfe8c">clicked</a>().connect(SLOT(<span class="keyword">this</span>, <a class="code" href="classSimpleChatWidget.html#e085fda18af441e1630342395499478c">SimpleChatWidget::login</a>));
<a name="l00066"></a>00066 <a class="code" href="classSimpleChatWidget.html#6216e8cf4d368c1550562e1c5525d34b">userNameEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WInteractWidget.html#38f06d1ad95e7599b055f49931236c10">enterPressed</a>().<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1EventSignal.html#6efcb92576b5aa846a3354dd26918a9f">connect</a>(SLOT(<span class="keyword">this</span>, <a class="code" href="classSimpleChatWidget.html#e085fda18af441e1630342395499478c">SimpleChatWidget::login</a>));
<a name="l00067"></a>00067
<a name="l00068"></a>00068 vLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#7c1ec58e25d0b7add93f5f4342844db6">addWidget</a>(<a class="code" href="classSimpleChatWidget.html#98f69adc6f2381cd98584566ed4c497e">statusMsg_</a> = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WText.html">WText</a>());
<a name="l00069"></a>00069 <a class="code" href="classSimpleChatWidget.html#98f69adc6f2381cd98584566ed4c497e">statusMsg_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WText.html#f22c64c4c5fed3d2aef0915a7e5c5866">setTextFormat</a>(<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/namespaceWt.html#140dea437d52d3d7c438ea3bd16a1480e06bb9ae9a26d13c3dcf9f20d5067885">PlainText</a>);
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071
<a name="l00072"></a><a class="code" href="classSimpleChatWidget.html#e085fda18af441e1630342395499478c">00072</a> <span class="keywordtype">void</span> <a class="code" href="classSimpleChatWidget.html#e085fda18af441e1630342395499478c">SimpleChatWidget::login</a>()
<a name="l00073"></a>00073 {
<a name="l00074"></a>00074 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WString.html">WString</a> name = WWebWidget::escapeText(<a class="code" href="classSimpleChatWidget.html#6216e8cf4d368c1550562e1c5525d34b">userNameEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WLineEdit.html#c74b58779cb635898cac13e81d8b0c7a">text</a>());
<a name="l00075"></a>00075
<a name="l00076"></a>00076 <span class="keywordflow">if</span> (!<a class="code" href="classSimpleChatWidget.html#19c0deeaf8952ec36791c3f444964878" title="Start a chat for the given user.">startChat</a>(name))
<a name="l00077"></a>00077 <a class="code" href="classSimpleChatWidget.html#98f69adc6f2381cd98584566ed4c497e">statusMsg_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WText.html#2f788aa524d51b3962642c9f565e66e6">setText</a>(<span class="stringliteral">"Sorry, name '"</span> + name + <span class="stringliteral">"' is already taken."</span>);
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079
<a name="l00080"></a><a class="code" href="classSimpleChatWidget.html#bff498a5a43a7e0caac5f2140f14e301">00080</a> <span class="keywordtype">void</span> <a class="code" href="classSimpleChatWidget.html#bff498a5a43a7e0caac5f2140f14e301">SimpleChatWidget::logout</a>()
<a name="l00081"></a>00081 {
<a name="l00082"></a>00082 <span class="keywordflow">if</span> (<a class="code" href="classSimpleChatWidget.html#9a6485984b400d54882606f2c947a286">eventConnection_</a>.connected()) {
<a name="l00083"></a>00083 <a class="code" href="classSimpleChatWidget.html#9a6485984b400d54882606f2c947a286">eventConnection_</a>.disconnect(); <span class="comment">// do not listen for more events</span>
<a name="l00084"></a>00084 <a class="code" href="classSimpleChatWidget.html#b29db4cbc3935964daf6b6c264ce68d3">server_</a>.<a class="code" href="classSimpleChatServer.html#5d376e3ff441f24843be648dd420e027" title="Logout from the server.">logout</a>(<a class="code" href="classSimpleChatWidget.html#596f7cbf70f45da9af017ac9d6f55ebc">user_</a>);
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <a class="code" href="classSimpleChatWidget.html#71d98bf20e007af247f3b5a74f35efa2" title="Show a simple login screen.">letLogin</a>();
<a name="l00087"></a>00087 }
<a name="l00088"></a>00088 }
<a name="l00089"></a>00089
<a name="l00090"></a><a class="code" href="classSimpleChatWidget.html#19c0deeaf8952ec36791c3f444964878">00090</a> <span class="keywordtype">bool</span> <a class="code" href="classSimpleChatWidget.html#19c0deeaf8952ec36791c3f444964878" title="Start a chat for the given user.">SimpleChatWidget::startChat</a>(<span class="keyword">const</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WString.html">WString</a>& user)
<a name="l00091"></a>00091 {
<a name="l00092"></a>00092 <span class="keywordflow">if</span> (<a class="code" href="classSimpleChatWidget.html#b29db4cbc3935964daf6b6c264ce68d3">server_</a>.<a class="code" href="classSimpleChatServer.html#da0ab17464e1711ca15f30b381ede57c" title="Try to login with given user name.">login</a>(user)) {
<a name="l00093"></a>00093 <a class="code" href="classSimpleChatWidget.html#9a6485984b400d54882606f2c947a286">eventConnection_</a>
<a name="l00094"></a>00094 = <a class="code" href="classSimpleChatWidget.html#b29db4cbc3935964daf6b6c264ce68d3">server_</a>.<a class="code" href="classSimpleChatServer.html#baf4e2a4e3e17b14e208146b0251f7ab" title="Signal that will convey chat events.">chatEvent</a>().<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1Signal.html#6fc9536d2e7f59684ec32f3734b01f38">connect</a>(SLOT(<span class="keyword">this</span>,
<a name="l00095"></a>00095 <a class="code" href="classSimpleChatWidget.html#cda2bbe138c3119e4c62a6132801a232">SimpleChatWidget::processChatEvent</a>));
<a name="l00096"></a>00096 <a class="code" href="classSimpleChatWidget.html#596f7cbf70f45da9af017ac9d6f55ebc">user_</a> = user;
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html#608f748cbdda763f1a11556ddad9fbe1">clear</a>();
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="comment">/*</span>
<a name="l00101"></a>00101 <span class="comment"> * Create a vertical layout, which will hold 3 rows,</span>
<a name="l00102"></a>00102 <span class="comment"> * organized like this:</span>
<a name="l00103"></a>00103 <span class="comment"> *</span>
<a name="l00104"></a>00104 <span class="comment"> * WVBoxLayout</span>
<a name="l00105"></a>00105 <span class="comment"> * --------------------------------------------</span>
<a name="l00106"></a>00106 <span class="comment"> * | nested WHBoxLayout (vertical stretch=1) |</span>
<a name="l00107"></a>00107 <span class="comment"> * | | |</span>
<a name="l00108"></a>00108 <span class="comment"> * | messages | userslist |</span>
<a name="l00109"></a>00109 <span class="comment"> * | (horizontal stretch=1) | |</span>
<a name="l00110"></a>00110 <span class="comment"> * | | |</span>
<a name="l00111"></a>00111 <span class="comment"> * --------------------------------------------</span>
<a name="l00112"></a>00112 <span class="comment"> * | message edit area |</span>
<a name="l00113"></a>00113 <span class="comment"> * --------------------------------------------</span>
<a name="l00114"></a>00114 <span class="comment"> * | WHBoxLayout |</span>
<a name="l00115"></a>00115 <span class="comment"> * | send | logout | stretch = 1 |</span>
<a name="l00116"></a>00116 <span class="comment"> * --------------------------------------------</span>
<a name="l00117"></a>00117 <span class="comment"> */</span>
<a name="l00118"></a>00118 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WVBoxLayout.html">WVBoxLayout</a> *vLayout = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WVBoxLayout.html">WVBoxLayout</a>();
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="comment">// Create a horizontal layout for the messages | userslist.</span>
<a name="l00121"></a>00121 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WHBoxLayout.html">WHBoxLayout</a> *hLayout = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WHBoxLayout.html">WHBoxLayout</a>();
<a name="l00122"></a>00122
<a name="l00123"></a>00123 <span class="comment">// Add widget to horizontal layout with stretch = 1</span>
<a name="l00124"></a>00124 hLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#7c1ec58e25d0b7add93f5f4342844db6">addWidget</a>(<a class="code" href="classSimpleChatWidget.html#32a593ed511997f32a33a55d651ce79d">messages_</a> = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html#520ba6e52a36a7f2efbef1a31a69e898">WContainerWidget</a>(), 1);
<a name="l00125"></a>00125 <a class="code" href="classSimpleChatWidget.html#32a593ed511997f32a33a55d651ce79d">messages_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWebWidget.html#6fd43dced1a62f7e79bc3522eeb16216">setStyleClass</a>(<span class="stringliteral">"chat-msgs"</span>);
<a name="l00126"></a>00126 <span class="comment">// Display scroll bars if contents overflows</span>
<a name="l00127"></a>00127 <a class="code" href="classSimpleChatWidget.html#32a593ed511997f32a33a55d651ce79d">messages_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html#e269f870992c5843d3097a63795b10d6">setOverflow</a>(WContainerWidget::OverflowAuto);
<a name="l00128"></a>00128
<a name="l00129"></a>00129 <span class="comment">// Add another widget to hirozontal layout with stretch = 0</span>
<a name="l00130"></a>00130 hLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#7c1ec58e25d0b7add93f5f4342844db6">addWidget</a>(<a class="code" href="classSimpleChatWidget.html#ee074d5eb739091af79eb8dccc90853e">userList_</a> = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html#520ba6e52a36a7f2efbef1a31a69e898">WContainerWidget</a>());
<a name="l00131"></a>00131 <a class="code" href="classSimpleChatWidget.html#ee074d5eb739091af79eb8dccc90853e">userList_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWebWidget.html#6fd43dced1a62f7e79bc3522eeb16216">setStyleClass</a>(<span class="stringliteral">"chat-users"</span>);
<a name="l00132"></a>00132 <a class="code" href="classSimpleChatWidget.html#ee074d5eb739091af79eb8dccc90853e">userList_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html#e269f870992c5843d3097a63795b10d6">setOverflow</a>(WContainerWidget::OverflowAuto);
<a name="l00133"></a>00133
<a name="l00134"></a>00134 hLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#00bdfb4d442bd8e8ad9c33b72692763f">setResizable</a>(0, <span class="keyword">true</span>);
<a name="l00135"></a>00135
<a name="l00136"></a>00136 <span class="comment">// Add nested layout to vertical layout with stretch = 1</span>
<a name="l00137"></a>00137 vLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#062d26b432841995a0be7b7d7aac6413">addLayout</a>(hLayout, 1);
<a name="l00138"></a>00138
<a name="l00139"></a>00139 <span class="comment">// Add widget to vertical layout with stretch = 0</span>
<a name="l00140"></a>00140 vLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#7c1ec58e25d0b7add93f5f4342844db6">addWidget</a>(<a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a> = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WTextArea.html">WTextArea</a>());
<a name="l00141"></a>00141 <a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWebWidget.html#6fd43dced1a62f7e79bc3522eeb16216">setStyleClass</a>(<span class="stringliteral">"chat-noedit"</span>);
<a name="l00142"></a>00142 <a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WTextArea.html#de46b47350f427f45c9b53ac7e41c5b2">setRows</a>(2);
<a name="l00143"></a>00143 <a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WFormWidget.html#fe33f5c3658ddbd08fec9f6c203c578b">setFocus</a>();
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="comment">// Create a horizontal layout for the buttons.</span>
<a name="l00146"></a>00146 hLayout = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WHBoxLayout.html">WHBoxLayout</a>();
<a name="l00147"></a>00147
<a name="l00148"></a>00148 <span class="comment">// Add button to horizontal layout with stretch = 0</span>
<a name="l00149"></a>00149 hLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#7c1ec58e25d0b7add93f5f4342844db6">addWidget</a>(<a class="code" href="classSimpleChatWidget.html#a9a81423eda8238f8aa37be1a5a5bee8">sendButton_</a> = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WPushButton.html">WPushButton</a>(<span class="stringliteral">"Send"</span>));
<a name="l00150"></a>00150 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WPushButton.html">WPushButton</a> *b;
<a name="l00151"></a>00151
<a name="l00152"></a>00152 <span class="comment">// Add button to horizontal layout with stretch = 0</span>
<a name="l00153"></a>00153 hLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#7c1ec58e25d0b7add93f5f4342844db6">addWidget</a>(b = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WPushButton.html">WPushButton</a>(<span class="stringliteral">"Logout"</span>));
<a name="l00154"></a>00154
<a name="l00155"></a>00155 <span class="comment">// Add stretching spacer to horizontal layout</span>
<a name="l00156"></a>00156 hLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#811708ce9336d753c20aaedc14b00d5f">addStretch</a>(1);
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="comment">// Add nested layout to vertical layout with stretch = 0</span>
<a name="l00159"></a>00159 vLayout-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WBoxLayout.html#062d26b432841995a0be7b7d7aac6413">addLayout</a>(hLayout);
<a name="l00160"></a>00160
<a name="l00161"></a>00161 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html#1c84e0ffe330d4798f0ce217f75be08c">setLayout</a>(vLayout);
<a name="l00162"></a>00162
<a name="l00163"></a>00163 <span class="comment">/*</span>
<a name="l00164"></a>00164 <span class="comment"> * Connect event handlers:</span>
<a name="l00165"></a>00165 <span class="comment"> * - click on button</span>
<a name="l00166"></a>00166 <span class="comment"> * - enter in text area</span>
<a name="l00167"></a>00167 <span class="comment"> *</span>
<a name="l00168"></a>00168 <span class="comment"> * We will clear the input field using a small custom client-side</span>
<a name="l00169"></a>00169 <span class="comment"> * JavaScript invocation.</span>
<a name="l00170"></a>00170 <span class="comment"> */</span>
<a name="l00171"></a>00171
<a name="l00172"></a>00172 <span class="comment">// Create a JavaScript 'slot' (JSlot). The JavaScript slot always takes</span>
<a name="l00173"></a>00173 <span class="comment">// 2 arguments: the originator of the event (in our case the</span>
<a name="l00174"></a>00174 <span class="comment">// button or text area), and the JavaScript event object.</span>
<a name="l00175"></a>00175 <a class="code" href="classSimpleChatWidget.html#7e58bf2312b413d2d649500c26a6f8d6">clearInput_</a>.<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1JSlot.html#4e28a8ef6d2965aeaac0c5dcf587bbbb">setJavaScript</a>
<a name="l00176"></a>00176 (<span class="stringliteral">"function(o, e) {"</span>
<a name="l00177"></a>00177 <span class="stringliteral">""</span> + <a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWidget.html#a2b7078b3b43d53a85e5244b45d504f7">jsRef</a>() + <span class="stringliteral">".value='';"</span>
<a name="l00178"></a>00178 <span class="stringliteral">"}"</span>);
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="comment">// Bind the C++ and JavaScript event handlers.</span>
<a name="l00181"></a>00181 <a class="code" href="classSimpleChatWidget.html#a9a81423eda8238f8aa37be1a5a5bee8">sendButton_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WInteractWidget.html#e11e050cce0d4a8f742afa3ef92bfe8c">clicked</a>().connect(SLOT(<span class="keyword">this</span>, <a class="code" href="classSimpleChatWidget.html#d1c4dc9e6aca0c5b8e1db81ee7c5fad3">SimpleChatWidget::send</a>));
<a name="l00182"></a>00182 <a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WInteractWidget.html#38f06d1ad95e7599b055f49931236c10">enterPressed</a>().<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1EventSignal.html#6efcb92576b5aa846a3354dd26918a9f">connect</a>(SLOT(<span class="keyword">this</span>, <a class="code" href="classSimpleChatWidget.html#d1c4dc9e6aca0c5b8e1db81ee7c5fad3">SimpleChatWidget::send</a>));
<a name="l00183"></a>00183 <a class="code" href="classSimpleChatWidget.html#a9a81423eda8238f8aa37be1a5a5bee8">sendButton_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WInteractWidget.html#e11e050cce0d4a8f742afa3ef92bfe8c">clicked</a>().connect(<a class="code" href="classSimpleChatWidget.html#7e58bf2312b413d2d649500c26a6f8d6">clearInput_</a>);
<a name="l00184"></a>00184 <a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WInteractWidget.html#38f06d1ad95e7599b055f49931236c10">enterPressed</a>().<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1EventSignal.html#6efcb92576b5aa846a3354dd26918a9f">connect</a>(<a class="code" href="classSimpleChatWidget.html#7e58bf2312b413d2d649500c26a6f8d6">clearInput_</a>);
<a name="l00185"></a>00185
<a name="l00186"></a>00186 <span class="comment">// Prevent the enter from generating a new line, which is its</span>
<a name="l00187"></a>00187 <span class="comment">// default function</span>
<a name="l00188"></a>00188 <a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WInteractWidget.html#38f06d1ad95e7599b055f49931236c10">enterPressed</a>().setPreventDefault(<span class="keyword">true</span>);
<a name="l00189"></a>00189
<a name="l00190"></a>00190 b-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WInteractWidget.html#e11e050cce0d4a8f742afa3ef92bfe8c">clicked</a>().connect(SLOT(<span class="keyword">this</span>, <a class="code" href="classSimpleChatWidget.html#bff498a5a43a7e0caac5f2140f14e301">SimpleChatWidget::logout</a>));
<a name="l00191"></a>00191
<a name="l00192"></a>00192 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WText.html">WText</a> *msg = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WText.html">WText</a>
<a name="l00193"></a>00193 (<span class="stringliteral">"<div><span class='chat-info'>You are joining the conversation as "</span>
<a name="l00194"></a>00194 + <a class="code" href="classSimpleChatWidget.html#596f7cbf70f45da9af017ac9d6f55ebc">user_</a> + <span class="stringliteral">"</span></div>"</span>, <a class="code" href="classSimpleChatWidget.html#32a593ed511997f32a33a55d651ce79d">messages_</a>);
<a name="l00195"></a>00195 msg-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWebWidget.html#6fd43dced1a62f7e79bc3522eeb16216">setStyleClass</a>(<span class="stringliteral">"chat-msg"</span>);
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <a class="code" href="classSimpleChatWidget.html#282d3fa5a7aceea89558de31db4bb6e0">updateUsers</a>();
<a name="l00198"></a>00198
<a name="l00199"></a>00199 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00200"></a>00200 } <span class="keywordflow">else</span>
<a name="l00201"></a>00201 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203
<a name="l00204"></a><a class="code" href="classSimpleChatWidget.html#d1c4dc9e6aca0c5b8e1db81ee7c5fad3">00204</a> <span class="keywordtype">void</span> <a class="code" href="classSimpleChatWidget.html#d1c4dc9e6aca0c5b8e1db81ee7c5fad3">SimpleChatWidget::send</a>()
<a name="l00205"></a>00205 {
<a name="l00206"></a>00206 <span class="keywordflow">if</span> (!<a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WTextArea.html#d8b89ce30df2b02894c53b6ed71fe4a6">text</a>().<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WString.html#87a90e69ab25d62ba029e10ea244abaf">empty</a>()) {
<a name="l00207"></a>00207 <a class="code" href="classSimpleChatWidget.html#b29db4cbc3935964daf6b6c264ce68d3">server_</a>.<a class="code" href="classSimpleChatServer.html#ab42074f7904397b3547a6df89c16d9d" title="Send a message on behalve of a user.">sendMessage</a>(<a class="code" href="classSimpleChatWidget.html#596f7cbf70f45da9af017ac9d6f55ebc">user_</a>, <a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WTextArea.html#d8b89ce30df2b02894c53b6ed71fe4a6">text</a>());
<a name="l00208"></a>00208 <span class="keywordflow">if</span> (!WApplication::instance()->environment().ajax())
<a name="l00209"></a>00209 <a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WTextArea.html#1f05060c037d13c2c6c26f51f1fb9640">setText</a>(WString::Empty);
<a name="l00210"></a>00210 }
<a name="l00211"></a>00211
<a name="l00212"></a>00212 <a class="code" href="classSimpleChatWidget.html#4b658b56ef4ba1862765b9ad84fd9a9c">messageEdit_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WFormWidget.html#fe33f5c3658ddbd08fec9f6c203c578b">setFocus</a>();
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214
<a name="l00215"></a><a class="code" href="classSimpleChatWidget.html#282d3fa5a7aceea89558de31db4bb6e0">00215</a> <span class="keywordtype">void</span> <a class="code" href="classSimpleChatWidget.html#282d3fa5a7aceea89558de31db4bb6e0">SimpleChatWidget::updateUsers</a>()
<a name="l00216"></a>00216 {
<a name="l00217"></a>00217 <a class="code" href="classSimpleChatWidget.html#ee074d5eb739091af79eb8dccc90853e">userList_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html#608f748cbdda763f1a11556ddad9fbe1">clear</a>();
<a name="l00218"></a>00218
<a name="l00219"></a>00219 <a class="code" href="classSimpleChatServer.html#911329f24472ca7ed245ab18611488d4" title="Typedef for a collection of user names.">SimpleChatServer::UserSet</a> users = <a class="code" href="classSimpleChatWidget.html#b29db4cbc3935964daf6b6c264ce68d3">server_</a>.<a class="code" href="classSimpleChatServer.html#40f5c6465b1edb44278be93c97a29a39" title="Get the users currently logged in.">users</a>();
<a name="l00220"></a>00220
<a name="l00221"></a>00221 <a class="code" href="classSimpleChatWidget.html#e3fdaeefe19e26c6c6ad9f7c0445af57">UserMap</a> oldUsers = <a class="code" href="classSimpleChatWidget.html#fe3350a7929733a5b93db803dee8704b">users_</a>;
<a name="l00222"></a>00222 <a class="code" href="classSimpleChatWidget.html#fe3350a7929733a5b93db803dee8704b">users_</a>.clear();
<a name="l00223"></a>00223
<a name="l00224"></a>00224 <span class="keywordflow">for</span> (SimpleChatServer::UserSet::iterator i = users.begin();
<a name="l00225"></a>00225 i != users.end(); ++i) {
<a name="l00226"></a>00226 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WCheckBox.html">WCheckBox</a> *w = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WCheckBox.html">WCheckBox</a>(*i, <a class="code" href="classSimpleChatWidget.html#ee074d5eb739091af79eb8dccc90853e">userList_</a>);
<a name="l00227"></a>00227 w-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWebWidget.html#73c0244d363cd2f8bd4814fe1ebee2b1">setInline</a>(<span class="keyword">false</span>);
<a name="l00228"></a>00228
<a name="l00229"></a>00229 UserMap::const_iterator j = oldUsers.find(*i);
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (j != oldUsers.end())
<a name="l00231"></a>00231 w-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractToggleButton.html#6838c9a37f3e9e3c466e9f48bde55e62">setChecked</a>(j->second);
<a name="l00232"></a>00232 <span class="keywordflow">else</span>
<a name="l00233"></a>00233 w-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractToggleButton.html#6838c9a37f3e9e3c466e9f48bde55e62">setChecked</a>(<span class="keyword">true</span>);
<a name="l00234"></a>00234
<a name="l00235"></a>00235 <a class="code" href="classSimpleChatWidget.html#fe3350a7929733a5b93db803dee8704b">users_</a>[*i] = w-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractToggleButton.html#bd40ce7a6c4b4e924c9097015f4971ea">isChecked</a>();
<a name="l00236"></a>00236 w-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WFormWidget.html#5216ba1594b5dc525cc47cad593c7ba8">changed</a>().<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1EventSignal.html#6efcb92576b5aa846a3354dd26918a9f">connect</a>(SLOT(<span class="keyword">this</span>, <a class="code" href="classSimpleChatWidget.html#76509fdffaf6a244c99977cf587c42e0">SimpleChatWidget::updateUser</a>));
<a name="l00237"></a>00237
<a name="l00238"></a>00238 <span class="keywordflow">if</span> (*i == <a class="code" href="classSimpleChatWidget.html#596f7cbf70f45da9af017ac9d6f55ebc">user_</a>)
<a name="l00239"></a>00239 w-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWebWidget.html#6fd43dced1a62f7e79bc3522eeb16216">setStyleClass</a>(<span class="stringliteral">"chat-self"</span>);
<a name="l00240"></a>00240 }
<a name="l00241"></a>00241 }
<a name="l00242"></a>00242
<a name="l00243"></a><a class="code" href="classSimpleChatWidget.html#76509fdffaf6a244c99977cf587c42e0">00243</a> <span class="keywordtype">void</span> <a class="code" href="classSimpleChatWidget.html#76509fdffaf6a244c99977cf587c42e0">SimpleChatWidget::updateUser</a>()
<a name="l00244"></a>00244 {
<a name="l00245"></a>00245 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WCheckBox.html">WCheckBox</a> *b = <span class="keyword">dynamic_cast<</span><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WCheckBox.html">WCheckBox</a> *<span class="keyword">></span>(<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WObject.html#413deb54de40ee278dd554e4960d58ca">sender</a>());
<a name="l00246"></a>00246 <a class="code" href="classSimpleChatWidget.html#fe3350a7929733a5b93db803dee8704b">users_</a>[b-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractToggleButton.html#3ef9682b5fe66d802380ccd6c698725d">text</a>()] = b-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WAbstractToggleButton.html#bd40ce7a6c4b4e924c9097015f4971ea">isChecked</a>();
<a name="l00247"></a>00247 }
<a name="l00248"></a>00248
<a name="l00249"></a><a class="code" href="classSimpleChatWidget.html#cda2bbe138c3119e4c62a6132801a232">00249</a> <span class="keywordtype">void</span> <a class="code" href="classSimpleChatWidget.html#cda2bbe138c3119e4c62a6132801a232">SimpleChatWidget::processChatEvent</a>(<span class="keyword">const</span> <a class="code" href="classChatEvent.html" title="Encapsulate a chat event.">ChatEvent</a>& event)
<a name="l00250"></a>00250 {
<a name="l00251"></a>00251 <span class="comment">/*</span>
<a name="l00252"></a>00252 <span class="comment"> * This is where the "server-push" happens. This method is called</span>
<a name="l00253"></a>00253 <span class="comment"> * when a new event or message needs to be notified to the user. In</span>
<a name="l00254"></a>00254 <span class="comment"> * general, it is called from another session.</span>
<a name="l00255"></a>00255 <span class="comment"> */</span>
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="comment">/*</span>
<a name="l00258"></a>00258 <span class="comment"> * First, take the lock to safely manipulate the UI outside of the</span>
<a name="l00259"></a>00259 <span class="comment"> * normal event loop, by having exclusive access to the session.</span>
<a name="l00260"></a>00260 <span class="comment"> */</span>
<a name="l00261"></a>00261 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WApplication_1_1UpdateLock.html">WApplication::UpdateLock</a> lock = <a class="code" href="classSimpleChatWidget.html#f27ada14cf08ce58437c2f3f72f0c4d1">app_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WApplication.html#c7582c37defc49b5e8d6ccbda3b68d45">getUpdateLock</a>();
<a name="l00262"></a>00262
<a name="l00263"></a>00263 <span class="comment">/*</span>
<a name="l00264"></a>00264 <span class="comment"> * Format and append the line to the conversation.</span>
<a name="l00265"></a>00265 <span class="comment"> *</span>
<a name="l00266"></a>00266 <span class="comment"> * This is also the step where the automatic XSS filtering will kick in:</span>
<a name="l00267"></a>00267 <span class="comment"> * - if another user tried to pass on some JavaScript, it is filtered away.</span>
<a name="l00268"></a>00268 <span class="comment"> * - if another user did not provide valid XHTML, the text is automatically</span>
<a name="l00269"></a>00269 <span class="comment"> * interpreted as PlainText</span>
<a name="l00270"></a>00270 <span class="comment"> */</span>
<a name="l00271"></a>00271 <span class="keywordtype">bool</span> needPush = <span class="keyword">false</span>;
<a name="l00272"></a>00272
<a name="l00273"></a>00273 <span class="comment">/*</span>
<a name="l00274"></a>00274 <span class="comment"> * If it is not a normal message, also update the user list.</span>
<a name="l00275"></a>00275 <span class="comment"> */</span>
<a name="l00276"></a>00276 <span class="keywordflow">if</span> (event.<a class="code" href="classChatEvent.html#c932234e63d23080f4f91f7ae1167418" title="Get the event type.">type</a>() != <a class="code" href="classChatEvent.html#fa84446dae17c08fe15cf932fc0b7d61b8894351cd11a316e25495f677eb9ae1">ChatEvent::Message</a>) {
<a name="l00277"></a>00277 needPush = <span class="keyword">true</span>;
<a name="l00278"></a>00278 <a class="code" href="classSimpleChatWidget.html#282d3fa5a7aceea89558de31db4bb6e0">updateUsers</a>();
<a name="l00279"></a>00279 }
<a name="l00280"></a>00280
<a name="l00281"></a>00281 <span class="keywordtype">bool</span> display = <span class="keyword">event</span>.type() != <a class="code" href="classChatEvent.html#fa84446dae17c08fe15cf932fc0b7d61b8894351cd11a316e25495f677eb9ae1">ChatEvent::Message</a>
<a name="l00282"></a>00282 || (<a class="code" href="classSimpleChatWidget.html#fe3350a7929733a5b93db803dee8704b">users_</a>.find(event.<a class="code" href="classChatEvent.html#dbeff19aece69e75ab0b69f2adecc5b6" title="Get the user who caused the event.">user</a>()) != <a class="code" href="classSimpleChatWidget.html#fe3350a7929733a5b93db803dee8704b">users_</a>.end() && <a class="code" href="classSimpleChatWidget.html#fe3350a7929733a5b93db803dee8704b">users_</a>[<span class="keyword">event</span>.user()]);
<a name="l00283"></a>00283
<a name="l00284"></a>00284 <span class="keywordflow">if</span> (display) {
<a name="l00285"></a>00285 needPush = <span class="keyword">true</span>;
<a name="l00286"></a>00286
<a name="l00287"></a>00287 <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WText.html">WText</a> *w = <span class="keyword">new</span> <a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WText.html">WText</a>(event.<a class="code" href="classChatEvent.html#6df1eda449e68e7f29644e68919b2f3f" title="Get the message formatted as HTML, rendered for the given user.">formattedHTML</a>(<a class="code" href="classSimpleChatWidget.html#596f7cbf70f45da9af017ac9d6f55ebc">user_</a>), <a class="code" href="classSimpleChatWidget.html#32a593ed511997f32a33a55d651ce79d">messages_</a>);
<a name="l00288"></a>00288 w-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWebWidget.html#73c0244d363cd2f8bd4814fe1ebee2b1">setInline</a>(<span class="keyword">false</span>);
<a name="l00289"></a>00289 w-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWebWidget.html#6fd43dced1a62f7e79bc3522eeb16216">setStyleClass</a>(<span class="stringliteral">"chat-msg"</span>);
<a name="l00290"></a>00290
<a name="l00291"></a>00291 <span class="comment">/*</span>
<a name="l00292"></a>00292 <span class="comment"> * Leave not more than 100 messages in the back-log</span>
<a name="l00293"></a>00293 <span class="comment"> */</span>
<a name="l00294"></a>00294 <span class="keywordflow">if</span> (<a class="code" href="classSimpleChatWidget.html#32a593ed511997f32a33a55d651ce79d">messages_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WContainerWidget.html#85abd4d928575717052ff7fa04c3c2c9">count</a>() > 100)
<a name="l00295"></a>00295 <span class="keyword">delete</span> <a class="code" href="classSimpleChatWidget.html#32a593ed511997f32a33a55d651ce79d">messages_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWebWidget.html#6f32718bcdfa546f012c795f80f319e3">children</a>()[0];
<a name="l00296"></a>00296
<a name="l00297"></a>00297 <span class="comment">/*</span>
<a name="l00298"></a>00298 <span class="comment"> * Little javascript trick to make sure we scroll along with new content</span>
<a name="l00299"></a>00299 <span class="comment"> */</span>
<a name="l00300"></a>00300 <a class="code" href="classSimpleChatWidget.html#f27ada14cf08ce58437c2f3f72f0c4d1">app_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WApplication.html#2a92457b9212cef4057cb54e56183967">doJavaScript</a>(<a class="code" href="classSimpleChatWidget.html#32a593ed511997f32a33a55d651ce79d">messages_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWidget.html#a2b7078b3b43d53a85e5244b45d504f7">jsRef</a>() + <span class="stringliteral">".scrollTop += "</span>
<a name="l00301"></a>00301 + <a class="code" href="classSimpleChatWidget.html#32a593ed511997f32a33a55d651ce79d">messages_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WWidget.html#a2b7078b3b43d53a85e5244b45d504f7">jsRef</a>() + <span class="stringliteral">".scrollHeight;"</span>);
<a name="l00302"></a>00302
<a name="l00303"></a>00303 <span class="comment">/* If this message belongs to another user, play a received sound */</span>
<a name="l00304"></a>00304 <span class="keywordflow">if</span> (event.<a class="code" href="classChatEvent.html#dbeff19aece69e75ab0b69f2adecc5b6" title="Get the user who caused the event.">user</a>() != <a class="code" href="classSimpleChatWidget.html#596f7cbf70f45da9af017ac9d6f55ebc">user_</a>)
<a name="l00305"></a>00305 <a class="code" href="classSimpleChatWidget.html#47d6f7d355107d9d44d3662b8c3de442">messageReceived_</a>.<a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WSound.html#6ca6b48ebc9e49ee6745228961df3817">play</a>();
<a name="l00306"></a>00306 }
<a name="l00307"></a>00307
<a name="l00308"></a>00308 <span class="keywordflow">if</span> (needPush)
<a name="l00309"></a>00309 <a class="code" href="classSimpleChatWidget.html#f27ada14cf08ce58437c2f3f72f0c4d1">app_</a>-><a class="codeRef" doxygen="wt.tags:../../reference/html/" href="../../reference/html/classWt_1_1WApplication.html#51f50e0641a6d702a7c6ab7f8dd5946a">triggerUpdate</a>();
<a name="l00310"></a>00310 }
</pre></div></div>
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