maxGraph/java/docs/com/mxgraph/util/mxUndoManager.html

512 lines
21 KiB
HTML

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<!-- NewPage -->
<html lang="en">
<head>
<!-- Generated by javadoc (version 1.7.0_51) on Fri Jul 25 02:45:13 EDT 2014 -->
<title>mxUndoManager (mxGraph 2.9.0.0 API Specification)</title>
<meta name="date" content="2014-07-25">
<link rel="stylesheet" type="text/css" href="../../../stylesheet.css" title="Style">
</head>
<body>
<script type="text/javascript"><!--
if (location.href.indexOf('is-external=true') == -1) {
parent.document.title="mxUndoManager (mxGraph 2.9.0.0 API Specification)";
}
//-->
</script>
<noscript>
<div>JavaScript is disabled on your browser.</div>
</noscript>
<!-- ========= START OF TOP NAVBAR ======= -->
<div class="topNav"><a name="navbar_top">
<!-- -->
</a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow">
<!-- -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../overview-summary.html">Overview</a></li>
<li><a href="package-summary.html">Package</a></li>
<li class="navBarCell1Rev">Class</li>
<li><a href="class-use/mxUndoManager.html">Use</a></li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../index-all.html">Index</a></li>
<li><a href="../../../help-doc.html">Help</a></li>
</ul>
<div class="aboutLanguage"><em><p><b>mxGraph 2.9.0.0</b></p></em></div>
</div>
<div class="subNav">
<ul class="navList">
<li><a href="../../../com/mxgraph/util/mxUndoableEdit.mxUndoableChange.html" title="interface in com.mxgraph.util"><span class="strong">Prev Class</span></a></li>
<li><a href="../../../com/mxgraph/util/mxUtils.html" title="class in com.mxgraph.util"><span class="strong">Next Class</span></a></li>
</ul>
<ul class="navList">
<li><a href="../../../index.html?com/mxgraph/util/mxUndoManager.html" target="_top">Frames</a></li>
<li><a href="mxUndoManager.html" target="_top">No Frames</a></li>
</ul>
<ul class="navList" id="allclasses_navbar_top">
<li><a href="../../../allclasses-noframe.html">All Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
allClassesLink = document.getElementById("allclasses_navbar_top");
if(window==top) {
allClassesLink.style.display = "block";
}
else {
allClassesLink.style.display = "none";
}
//-->
</script>
</div>
<div>
<ul class="subNavList">
<li>Summary:&nbsp;</li>
<li><a href="#nested_classes_inherited_from_class_com.mxgraph.util.mxEventSource">Nested</a>&nbsp;|&nbsp;</li>
<li><a href="#field_summary">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor_summary">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method_summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail:&nbsp;</li>
<li><a href="#field_detail">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor_detail">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method_detail">Method</a></li>
</ul>
</div>
<a name="skip-navbar_top">
<!-- -->
</a></div>
<!-- ========= END OF TOP NAVBAR ========= -->
<!-- ======== START OF CLASS DATA ======== -->
<div class="header">
<div class="subTitle">com.mxgraph.util</div>
<h2 title="Class mxUndoManager" class="title">Class mxUndoManager</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
<li>
<ul class="inheritance">
<li><a href="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">com.mxgraph.util.mxEventSource</a></li>
<li>
<ul class="inheritance">
<li>com.mxgraph.util.mxUndoManager</li>
</ul>
</li>
</ul>
</li>
</ul>
<div class="description">
<ul class="blockList">
<li class="blockList">
<hr>
<br>
<pre>public class <span class="strong">mxUndoManager</span>
extends <a href="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</a></pre>
<div class="block">Implements an undo history.
This class fires the following events:
mxEvent.CLEAR fires after clear was executed. The event has no properties.
mxEvent.UNDO fires afer a significant edit was undone in undo. The
<code>edit</code> property contains the mxUndoableEdit that was undone.
mxEvent.REDO fires afer a significant edit was redone in redo. The
<code>edit</code> property contains the mxUndoableEdit that was redone.
mxEvent.ADD fires after an undoable edit was added to the history. The
<code>edit</code> property contains the mxUndoableEdit that was added.</div>
</li>
</ul>
</div>
<div class="summary">
<ul class="blockList">
<li class="blockList">
<!-- ======== NESTED CLASS SUMMARY ======== -->
<ul class="blockList">
<li class="blockList"><a name="nested_class_summary">
<!-- -->
</a>
<h3>Nested Class Summary</h3>
<ul class="blockList">
<li class="blockList"><a name="nested_classes_inherited_from_class_com.mxgraph.util.mxEventSource">
<!-- -->
</a>
<h3>Nested classes/interfaces inherited from class&nbsp;com.mxgraph.util.<a href="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</a></h3>
<code><a href="../../../com/mxgraph/util/mxEventSource.mxIEventListener.html" title="interface in com.mxgraph.util">mxEventSource.mxIEventListener</a></code></li>
</ul>
</li>
</ul>
<!-- =========== FIELD SUMMARY =========== -->
<ul class="blockList">
<li class="blockList"><a name="field_summary">
<!-- -->
</a>
<h3>Field Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../com/mxgraph/util/mxUndoableEdit.html" title="class in com.mxgraph.util">mxUndoableEdit</a>&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#history">history</a></strong></code>
<div class="block">List that contains the steps of the command history.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#indexOfNextAdd">indexOfNextAdd</a></strong></code>
<div class="block">Index of the element to be added next.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#size">size</a></strong></code>
<div class="block">Maximum command history size.</div>
</td>
</tr>
</table>
<ul class="blockList">
<li class="blockList"><a name="fields_inherited_from_class_com.mxgraph.util.mxEventSource">
<!-- -->
</a>
<h3>Fields inherited from class&nbsp;com.mxgraph.util.<a href="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</a></h3>
<code><a href="../../../com/mxgraph/util/mxEventSource.html#eventListeners">eventListeners</a>, <a href="../../../com/mxgraph/util/mxEventSource.html#eventsEnabled">eventsEnabled</a>, <a href="../../../com/mxgraph/util/mxEventSource.html#eventSource">eventSource</a></code></li>
</ul>
</li>
</ul>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<ul class="blockList">
<li class="blockList"><a name="constructor_summary">
<!-- -->
</a>
<h3>Constructor Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation">
<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#mxUndoManager()">mxUndoManager</a></strong>()</code>
<div class="block">Constructs a new undo manager with a default history size.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colOne"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#mxUndoManager(int)">mxUndoManager</a></strong>(int&nbsp;size)</code>
<div class="block">Constructs a new undo manager for the specified size.</div>
</td>
</tr>
</table>
</li>
</ul>
<!-- ========== METHOD SUMMARY =========== -->
<ul class="blockList">
<li class="blockList"><a name="method_summary">
<!-- -->
</a>
<h3>Method Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#canRedo()">canRedo</a></strong>()</code>
<div class="block">Returns true if a redo is possible.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#canUndo()">canUndo</a></strong>()</code>
<div class="block">Returns true if an undo is possible.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#clear()">clear</a></strong>()</code>
<div class="block">Clears the command history.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#isEmpty()">isEmpty</a></strong>()</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#redo()">redo</a></strong>()</code>
<div class="block">Redoes the last change.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#trim()">trim</a></strong>()</code>
<div class="block">Removes all pending steps after indexOfNextAdd from the history,
invoking die on each edit.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#undo()">undo</a></strong>()</code>
<div class="block">Undoes the last change.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/util/mxUndoManager.html#undoableEditHappened(com.mxgraph.util.mxUndoableEdit)">undoableEditHappened</a></strong>(<a href="../../../com/mxgraph/util/mxUndoableEdit.html" title="class in com.mxgraph.util">mxUndoableEdit</a>&nbsp;undoableEdit)</code>
<div class="block">Method to be called to add new undoable edits to the history.</div>
</td>
</tr>
</table>
<ul class="blockList">
<li class="blockList"><a name="methods_inherited_from_class_com.mxgraph.util.mxEventSource">
<!-- -->
</a>
<h3>Methods inherited from class&nbsp;com.mxgraph.util.<a href="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</a></h3>
<code><a href="../../../com/mxgraph/util/mxEventSource.html#addListener(java.lang.String, com.mxgraph.util.mxEventSource.mxIEventListener)">addListener</a>, <a href="../../../com/mxgraph/util/mxEventSource.html#fireEvent(com.mxgraph.util.mxEventObject)">fireEvent</a>, <a href="../../../com/mxgraph/util/mxEventSource.html#fireEvent(com.mxgraph.util.mxEventObject, java.lang.Object)">fireEvent</a>, <a href="../../../com/mxgraph/util/mxEventSource.html#getEventSource()">getEventSource</a>, <a href="../../../com/mxgraph/util/mxEventSource.html#isEventsEnabled()">isEventsEnabled</a>, <a href="../../../com/mxgraph/util/mxEventSource.html#removeListener(com.mxgraph.util.mxEventSource.mxIEventListener)">removeListener</a>, <a href="../../../com/mxgraph/util/mxEventSource.html#removeListener(com.mxgraph.util.mxEventSource.mxIEventListener, java.lang.String)">removeListener</a>, <a href="../../../com/mxgraph/util/mxEventSource.html#setEventsEnabled(boolean)">setEventsEnabled</a>, <a href="../../../com/mxgraph/util/mxEventSource.html#setEventSource(java.lang.Object)">setEventSource</a></code></li>
</ul>
<ul class="blockList">
<li class="blockList"><a name="methods_inherited_from_class_java.lang.Object">
<!-- -->
</a>
<h3>Methods inherited from class&nbsp;java.lang.<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
<div class="details">
<ul class="blockList">
<li class="blockList">
<!-- ============ FIELD DETAIL =========== -->
<ul class="blockList">
<li class="blockList"><a name="field_detail">
<!-- -->
</a>
<h3>Field Detail</h3>
<a name="size">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>size</h4>
<pre>protected&nbsp;int size</pre>
<div class="block">Maximum command history size. 0 means unlimited history. Default is 100.</div>
</li>
</ul>
<a name="history">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>history</h4>
<pre>protected&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../com/mxgraph/util/mxUndoableEdit.html" title="class in com.mxgraph.util">mxUndoableEdit</a>&gt; history</pre>
<div class="block">List that contains the steps of the command history.</div>
</li>
</ul>
<a name="indexOfNextAdd">
<!-- -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>indexOfNextAdd</h4>
<pre>protected&nbsp;int indexOfNextAdd</pre>
<div class="block">Index of the element to be added next.</div>
</li>
</ul>
</li>
</ul>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<ul class="blockList">
<li class="blockList"><a name="constructor_detail">
<!-- -->
</a>
<h3>Constructor Detail</h3>
<a name="mxUndoManager()">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>mxUndoManager</h4>
<pre>public&nbsp;mxUndoManager()</pre>
<div class="block">Constructs a new undo manager with a default history size.</div>
</li>
</ul>
<a name="mxUndoManager(int)">
<!-- -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>mxUndoManager</h4>
<pre>public&nbsp;mxUndoManager(int&nbsp;size)</pre>
<div class="block">Constructs a new undo manager for the specified size.</div>
</li>
</ul>
</li>
</ul>
<!-- ============ METHOD DETAIL ========== -->
<ul class="blockList">
<li class="blockList"><a name="method_detail">
<!-- -->
</a>
<h3>Method Detail</h3>
<a name="isEmpty()">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>isEmpty</h4>
<pre>public&nbsp;boolean&nbsp;isEmpty()</pre>
</li>
</ul>
<a name="clear()">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>clear</h4>
<pre>public&nbsp;void&nbsp;clear()</pre>
<div class="block">Clears the command history.</div>
</li>
</ul>
<a name="canUndo()">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>canUndo</h4>
<pre>public&nbsp;boolean&nbsp;canUndo()</pre>
<div class="block">Returns true if an undo is possible.</div>
</li>
</ul>
<a name="undo()">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>undo</h4>
<pre>public&nbsp;void&nbsp;undo()</pre>
<div class="block">Undoes the last change.</div>
</li>
</ul>
<a name="canRedo()">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>canRedo</h4>
<pre>public&nbsp;boolean&nbsp;canRedo()</pre>
<div class="block">Returns true if a redo is possible.</div>
</li>
</ul>
<a name="redo()">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>redo</h4>
<pre>public&nbsp;void&nbsp;redo()</pre>
<div class="block">Redoes the last change.</div>
</li>
</ul>
<a name="undoableEditHappened(com.mxgraph.util.mxUndoableEdit)">
<!-- -->
</a>
<ul class="blockList">
<li class="blockList">
<h4>undoableEditHappened</h4>
<pre>public&nbsp;void&nbsp;undoableEditHappened(<a href="../../../com/mxgraph/util/mxUndoableEdit.html" title="class in com.mxgraph.util">mxUndoableEdit</a>&nbsp;undoableEdit)</pre>
<div class="block">Method to be called to add new undoable edits to the history.</div>
</li>
</ul>
<a name="trim()">
<!-- -->
</a>
<ul class="blockListLast">
<li class="blockList">
<h4>trim</h4>
<pre>protected&nbsp;void&nbsp;trim()</pre>
<div class="block">Removes all pending steps after indexOfNextAdd from the history,
invoking die on each edit. This is called from undoableEditHappened.</div>
</li>
</ul>
</li>
</ul>
</li>
</ul>
</div>
</div>
<!-- ========= END OF CLASS DATA ========= -->
<!-- ======= START OF BOTTOM NAVBAR ====== -->
<div class="bottomNav"><a name="navbar_bottom">
<!-- -->
</a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow">
<!-- -->
</a>
<ul class="navList" title="Navigation">
<li><a href="../../../overview-summary.html">Overview</a></li>
<li><a href="package-summary.html">Package</a></li>
<li class="navBarCell1Rev">Class</li>
<li><a href="class-use/mxUndoManager.html">Use</a></li>
<li><a href="package-tree.html">Tree</a></li>
<li><a href="../../../deprecated-list.html">Deprecated</a></li>
<li><a href="../../../index-all.html">Index</a></li>
<li><a href="../../../help-doc.html">Help</a></li>
</ul>
<div class="aboutLanguage"><em><p><b>mxGraph 2.9.0.0</b></p></em></div>
</div>
<div class="subNav">
<ul class="navList">
<li><a href="../../../com/mxgraph/util/mxUndoableEdit.mxUndoableChange.html" title="interface in com.mxgraph.util"><span class="strong">Prev Class</span></a></li>
<li><a href="../../../com/mxgraph/util/mxUtils.html" title="class in com.mxgraph.util"><span class="strong">Next Class</span></a></li>
</ul>
<ul class="navList">
<li><a href="../../../index.html?com/mxgraph/util/mxUndoManager.html" target="_top">Frames</a></li>
<li><a href="mxUndoManager.html" target="_top">No Frames</a></li>
</ul>
<ul class="navList" id="allclasses_navbar_bottom">
<li><a href="../../../allclasses-noframe.html">All Classes</a></li>
</ul>
<div>
<script type="text/javascript"><!--
allClassesLink = document.getElementById("allclasses_navbar_bottom");
if(window==top) {
allClassesLink.style.display = "block";
}
else {
allClassesLink.style.display = "none";
}
//-->
</script>
</div>
<div>
<ul class="subNavList">
<li>Summary:&nbsp;</li>
<li><a href="#nested_classes_inherited_from_class_com.mxgraph.util.mxEventSource">Nested</a>&nbsp;|&nbsp;</li>
<li><a href="#field_summary">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor_summary">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method_summary">Method</a></li>
</ul>
<ul class="subNavList">
<li>Detail:&nbsp;</li>
<li><a href="#field_detail">Field</a>&nbsp;|&nbsp;</li>
<li><a href="#constructor_detail">Constr</a>&nbsp;|&nbsp;</li>
<li><a href="#method_detail">Method</a></li>
</ul>
</div>
<a name="skip-navbar_bottom">
<!-- -->
</a></div>
<!-- ======== END OF BOTTOM NAVBAR ======= -->
<p class="legalCopy"><small><font size=1>Copyright (c) 2010 <a href="http://www.mxgraph.com/"
target="_blank">Gaudenz Alder, David Benson</a>. All rights reserved.</font></small></p>
</body>
</html>