<?xml version="1.0" encoding="UTF-8"?> <!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" lang="en_US" xml:lang="en_US"> <head> <title>kalarm: undo.h Source File (kalarm)</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta http-equiv="Content-Style-Type" content="text/css" /> <meta http-equiv="pics-label" content='(pics-1.1 "http://www.icra.org/ratingsv02.html" comment "ICRAonline DE v2.0" l gen true for "http://www.kde.org" r (nz 1 vz 1 lz 1 oz 1 cb 1) "http://www.rsac.org/ratingsv01.html" l gen true for "http://www.kde.org" r (n 0 s 0 v 0 l 0))' /> <meta name="trademark" content="KDE e.V." /> <meta name="description" content="K Desktop Environment Homepage, KDE.org" /> <meta name="MSSmartTagsPreventParsing" content="true" /> <meta name="robots" content="all" /> <link rel="shortcut icon" href="../../favicon.ico" /> <link rel="stylesheet" media="screen" type="text/css" title="APIDOX" href="doxygen.css" /> <style type="text/css"> <!-- hr { display: none; } #content h2 { margin-left: 0px; } table.mdTable { background-color: #f8f8f8; border: .2em solid #d7d7d7; } td.mdRow { padding: 8px 20px; } td.md { font-weight: bold; } td.mdname1 { font-weight: bold; color: #602020; } td.mdname { font-weight: bold; color: #602020; } --> </style> </head> <body> <div id="nav_header_top" align="right"> <a href="#content" class="doNotDisplay" accesskey="2">Skip to main content ::</a> <a href="../.."><img id="nav_header_logo" alt="Home" align="left" src="../../kde_gear_64.png" border="0" /></a> <span class="doNotDisplay">::</span> <img id="nav_header_logo_right" alt="" align="right" src="../../pimlogo.png" border="0" /> <div id="nav_header_title" align="left">KDE PIM API Reference</div> </div> <div id="nav_header_bottom" align="right"> <span class="doNotDisplay">:: <a href="#navigation" accesskey="5">Skip to Link Menu</a><br/></span> <div id="nav_header_bottom_left" style="text-align: left;"> / <a href="../../">API Reference</a> / <a href=".">kalarm</a> </div> </div> <table id="main" border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td valign="top" class="menuheader" height="0"></td> <td id="contentcolumn" valign="top" rowspan="2" > <div id="content" style="padding-top: 0px;"><div style="width:100%; margin: 0px; padding: 0px;"> <h2><a name="content"></a>kalarm</h2> <!-- Generated by Doxygen 1.5.5 --> <h1>undo.h</h1><a href="undo_8h.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"> * undo.h - undo/redo facility</span> <a name="l00003"></a>00003 <span class="comment"> * Program: kalarm</span> <a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2005 by David Jarvie <software@astrojar.org.uk></span> <a name="l00005"></a>00005 <span class="comment"> *</span> <a name="l00006"></a>00006 <span class="comment"> * This program is free software; you can redistribute it and/or modify</span> <a name="l00007"></a>00007 <span class="comment"> * it under the terms of the GNU General Public License as published by</span> <a name="l00008"></a>00008 <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span> <a name="l00009"></a>00009 <span class="comment"> * (at your option) any later version.</span> <a name="l00010"></a>00010 <span class="comment"> *</span> <a name="l00011"></a>00011 <span class="comment"> * This program is distributed in the hope that it will be useful,</span> <a name="l00012"></a>00012 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span> <a name="l00013"></a>00013 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span> <a name="l00014"></a>00014 <span class="comment"> * GNU General Public License for more details.</span> <a name="l00015"></a>00015 <span class="comment"> *</span> <a name="l00016"></a>00016 <span class="comment"> * You should have received a copy of the GNU General Public License along</span> <a name="l00017"></a>00017 <span class="comment"> * with this program; if not, write to the Free Software Foundation, Inc.,</span> <a name="l00018"></a>00018 <span class="comment"> * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.</span> <a name="l00019"></a>00019 <span class="comment"> */</span> <a name="l00020"></a>00020 <a name="l00021"></a>00021 <span class="preprocessor">#ifndef UNDO_H</span> <a name="l00022"></a>00022 <span class="preprocessor"></span><span class="preprocessor">#define UNDO_H</span> <a name="l00023"></a>00023 <span class="preprocessor"></span> <a name="l00026"></a>00026 <span class="preprocessor">#include <qvaluelist.h></span> <a name="l00027"></a>00027 <span class="preprocessor">#include <qstringlist.h></span> <a name="l00028"></a>00028 <a name="l00029"></a>00029 <span class="keyword">class </span><a class="code" href="classKAEvent.html" title="KAEvent corresponds to a KCal::Event instance.">KAEvent</a>; <a name="l00030"></a>00030 <span class="keyword">class </span>UndoItem; <a name="l00031"></a>00031 <a name="l00032"></a>00032 <a name="l00033"></a>00033 <span class="keyword">class </span>Undo : <span class="keyword">public</span> QObject <a name="l00034"></a>00034 { <a name="l00035"></a>00035 Q_OBJECT <a name="l00036"></a>00036 <span class="keyword">public</span>: <a name="l00037"></a>00037 <span class="keyword">enum</span> Type { NONE, UNDO, REDO }; <a name="l00038"></a>00038 <a name="l00039"></a>00039 <span class="keyword">static</span> Undo* instance(); <a name="l00040"></a>00040 <span class="keyword">static</span> <span class="keywordtype">void</span> saveAdd(<span class="keyword">const</span> <a class="code" href="classKAEvent.html" title="KAEvent corresponds to a KCal::Event instance.">KAEvent</a>&); <a name="l00041"></a>00041 <span class="keyword">static</span> <span class="keywordtype">void</span> saveEdit(<span class="keyword">const</span> <a class="code" href="classKAEvent.html" title="KAEvent corresponds to a KCal::Event instance.">KAEvent</a>& oldEvent, <span class="keyword">const</span> <a class="code" href="classKAEvent.html" title="KAEvent corresponds to a KCal::Event instance.">KAEvent</a>& newEvent); <a name="l00042"></a>00042 <span class="keyword">static</span> <span class="keywordtype">void</span> saveDelete(<span class="keyword">const</span> <a class="code" href="classKAEvent.html" title="KAEvent corresponds to a KCal::Event instance.">KAEvent</a>&); <a name="l00043"></a>00043 <span class="keyword">static</span> <span class="keywordtype">void</span> saveDeletes(<span class="keyword">const</span> QValueList<KAEvent>&); <a name="l00044"></a>00044 <span class="keyword">static</span> <span class="keywordtype">void</span> saveReactivate(<span class="keyword">const</span> <a class="code" href="classKAEvent.html" title="KAEvent corresponds to a KCal::Event instance.">KAEvent</a>&); <a name="l00045"></a>00045 <span class="keyword">static</span> <span class="keywordtype">void</span> saveReactivates(<span class="keyword">const</span> QValueList<KAEvent>&); <a name="l00046"></a>00046 <span class="keyword">static</span> <span class="keywordtype">bool</span> undo(QWidget* parent, <span class="keyword">const</span> QString& action) <a name="l00047"></a>00047 { <span class="keywordflow">return</span> undo(mUndoList.begin(), UNDO, parent, action); } <a name="l00048"></a>00048 <span class="keyword">static</span> <span class="keywordtype">bool</span> undo(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, QWidget* parent, <span class="keyword">const</span> QString& action) <a name="l00049"></a>00049 { <span class="keywordflow">return</span> undo(findItem(<span class="keywordtype">id</span>, UNDO), UNDO, parent, action); } <a name="l00050"></a>00050 <span class="keyword">static</span> <span class="keywordtype">bool</span> redo(QWidget* parent, <span class="keyword">const</span> QString& action) <a name="l00051"></a>00051 { <span class="keywordflow">return</span> undo(mRedoList.begin(), REDO, parent, action); } <a name="l00052"></a>00052 <span class="keyword">static</span> <span class="keywordtype">bool</span> redo(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, QWidget* parent, <span class="keyword">const</span> QString& action) <a name="l00053"></a>00053 { <span class="keywordflow">return</span> undo(findItem(<span class="keywordtype">id</span>, REDO), REDO, parent, action); } <a name="l00054"></a>00054 <span class="keyword">static</span> <span class="keywordtype">void</span> clear(); <a name="l00055"></a>00055 <span class="keyword">static</span> <span class="keywordtype">bool</span> haveUndo() { <span class="keywordflow">return</span> !mUndoList.isEmpty(); } <a name="l00056"></a>00056 <span class="keyword">static</span> <span class="keywordtype">bool</span> haveRedo() { <span class="keywordflow">return</span> !mRedoList.isEmpty(); } <a name="l00057"></a>00057 <span class="keyword">static</span> QString actionText(Type); <a name="l00058"></a>00058 <span class="keyword">static</span> QString actionText(Type, <span class="keywordtype">int</span> <span class="keywordtype">id</span>); <a name="l00059"></a>00059 <span class="keyword">static</span> QString description(Type, <span class="keywordtype">int</span> <span class="keywordtype">id</span>); <a name="l00060"></a>00060 <span class="keyword">static</span> QValueList<int> ids(Type); <a name="l00061"></a>00061 <span class="keyword">static</span> <span class="keywordtype">void</span> emitChanged(); <a name="l00062"></a>00062 <a name="l00063"></a>00063 <span class="comment">// Types for use by UndoItem class and its descendants</span> <a name="l00064"></a>00064 <span class="keyword">typedef</span> QValueList<UndoItem*> List; <a name="l00065"></a>00065 <a name="l00066"></a>00066 signals: <a name="l00067"></a>00067 <span class="keywordtype">void</span> changed(<span class="keyword">const</span> QString& undo, <span class="keyword">const</span> QString& redo); <a name="l00068"></a>00068 <a name="l00069"></a>00069 <span class="keyword">protected</span>: <a name="l00070"></a>00070 <span class="comment">// Methods for use by UndoItem class</span> <a name="l00071"></a>00071 <span class="keyword">static</span> <span class="keywordtype">void</span> <span class="keyword">add</span>(UndoItem*, <span class="keywordtype">bool</span> undo); <a name="l00072"></a>00072 <span class="keyword">static</span> <span class="keywordtype">void</span> <span class="keyword">remove</span>(UndoItem*, <span class="keywordtype">bool</span> undo); <a name="l00073"></a>00073 <span class="keyword">static</span> <span class="keywordtype">void</span> replace(UndoItem* old, UndoItem* New); <a name="l00074"></a>00074 <a name="l00075"></a>00075 <span class="keyword">private</span>: <a name="l00076"></a>00076 <span class="keyword">typedef</span> QValueList<UndoItem*>::Iterator Iterator; <a name="l00077"></a>00077 <a name="l00078"></a>00078 Undo(QObject* parent) : QObject(parent) { } <a name="l00079"></a>00079 <span class="keyword">static</span> <span class="keywordtype">void</span> removeRedos(<span class="keyword">const</span> QString& eventID); <a name="l00080"></a>00080 <span class="keyword">static</span> <span class="keywordtype">bool</span> undo(Iterator, Type, QWidget* parent, <span class="keyword">const</span> QString& action); <a name="l00081"></a>00081 <span class="keyword">static</span> UndoItem* getItem(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, Type); <a name="l00082"></a>00082 <span class="keyword">static</span> Iterator findItem(<span class="keywordtype">int</span> <span class="keywordtype">id</span>, Type); <a name="l00083"></a>00083 <span class="keywordtype">void</span> emitChanged(<span class="keyword">const</span> QString& undo, <span class="keyword">const</span> QString& redo) <a name="l00084"></a>00084 { emit changed(undo, redo); } <a name="l00085"></a>00085 <a name="l00086"></a>00086 <span class="keyword">static</span> Undo* mInstance; <span class="comment">// the one and only Undo instance</span> <a name="l00087"></a>00087 <span class="keyword">static</span> List mUndoList; <span class="comment">// edit history for undo, latest undo first</span> <a name="l00088"></a>00088 <span class="keyword">static</span> List mRedoList; <span class="comment">// edit history for redo, latest redo first</span> <a name="l00089"></a>00089 <a name="l00090"></a>00090 <span class="keyword">friend</span> <span class="keyword">class </span>UndoItem; <a name="l00091"></a>00091 }; <a name="l00092"></a>00092 <a name="l00093"></a>00093 <span class="preprocessor">#endif // UNDO_H</span> </pre></div></div> </div></div> </td> </tr> <tr> <td valign="top" id="leftmenu" width="25%"> <a name="navigation"></a> <div class="menu_box"><h2>kalarm</h2> <div class="nav_list"> <ul><li><a href="index.html">Main Page</a></li><li><a href="hierarchy.html">Class Hierarchy</a></li><li><a href="classes.html">Alphabetical List</a></li><li><a href="annotated.html">Class List</a></li><li><a href="files.html">File List</a></li><li><a href="functions.html">Class Members</a></li></ul> <!-- <h2>Class Picker</h2> <div style="text-align: center;"> <form name="guideform"> <select name="guidelinks" style="width:100%;" onChange="window.location=document.guideform.guidelinks.options[document.guideform.guidelinks.selectedIndex].value"> <option value="annotated.html">-- Choose --</option> <option value="classAlarmCalendar.html">alarmcalendar</option>, <option value="classKAEvent.html">kaevent</option>, <option 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