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mxUndoManager (mxGraph 2.4.0.0 API Specification)
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SUMMARY: <A HREF="#nested_classes_inherited_from_class_com.mxgraph.util.mxEventSource">NESTED</A> | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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com.mxgraph.util</FONT>
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Class mxUndoManager</H2>
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<PRE>
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<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>
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<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">com.mxgraph.util.mxEventSource</A>
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<IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>com.mxgraph.util.mxUndoManager</B>
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</PRE>
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<DL>
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<DT><PRE>public class <B>mxUndoManager</B><DT>extends <A HREF="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</A></DL>
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</PRE>
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<P>
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Implements an undo history.
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This class fires the following events:
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mxEvent.CLEAR fires after clear was executed. The event has no properties.
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mxEvent.UNDO fires afer a significant edit was undone in undo. The
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<code>edit</code> property contains the mxUndoableEdit that was undone.
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mxEvent.REDO fires afer a significant edit was redone in redo. The
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<code>edit</code> property contains the mxUndoableEdit that was redone.
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mxEvent.ADD fires after an undoable edit was added to the history. The
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<code>edit</code> property contains the mxUndoableEdit that was added.
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<P>
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<P>
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<HR>
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<P>
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<!-- ======== NESTED CLASS SUMMARY ======== -->
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<A NAME="nested_class_summary"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<B>Nested Class Summary</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="nested_classes_inherited_from_class_com.mxgraph.util.mxEventSource"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
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<TH ALIGN="left"><B>Nested classes/interfaces inherited from class com.mxgraph.util.<A HREF="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</A></B></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><A HREF="../../../com/mxgraph/util/mxEventSource.mxIEventListener.html" title="interface in com.mxgraph.util">mxEventSource.mxIEventListener</A></CODE></TD>
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</TR>
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</TABLE>
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<!-- =========== FIELD SUMMARY =========== -->
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<B>Field Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<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><<A HREF="../../../com/mxgraph/util/mxUndoableEdit.html" title="class in com.mxgraph.util">mxUndoableEdit</A>></CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#history">history</A></B></CODE>
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<BR>
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List that contains the steps of the command history.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected int</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#indexOfNextAdd">indexOfNextAdd</A></B></CODE>
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<BR>
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Index of the element to be added next.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected int</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#size">size</A></B></CODE>
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<BR>
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Maximum command history size.</TD>
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</TR>
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</TABLE>
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<A NAME="fields_inherited_from_class_com.mxgraph.util.mxEventSource"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
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<TH ALIGN="left"><B>Fields inherited from class com.mxgraph.util.<A HREF="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</A></B></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><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></TD>
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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<A NAME="constructor_summary"><!-- --></A>
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<B>Constructor Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#mxUndoManager()">mxUndoManager</A></B>()</CODE>
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<BR>
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Constructs a new undo manager with a default history size.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#mxUndoManager(int)">mxUndoManager</A></B>(int size)</CODE>
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<BR>
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Constructs a new undo manager for the specified size.</TD>
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</TR>
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</TABLE>
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<!-- ========== METHOD SUMMARY =========== -->
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<A NAME="method_summary"><!-- --></A>
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<B>Method Summary</B></FONT></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> boolean</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#canRedo()">canRedo</A></B>()</CODE>
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<BR>
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Returns true if a redo is possible.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> boolean</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#canUndo()">canUndo</A></B>()</CODE>
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<BR>
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Returns true if an undo is possible.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#clear()">clear</A></B>()</CODE>
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<BR>
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Clears the command history.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> boolean</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#isEmpty()">isEmpty</A></B>()</CODE>
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<BR>
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</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#redo()">redo</A></B>()</CODE>
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<BR>
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Redoes the last change.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE>protected void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#trim()">trim</A></B>()</CODE>
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<BR>
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Removes all pending steps after indexOfNextAdd from the history,
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invoking die on each edit.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#undo()">undo</A></B>()</CODE>
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<BR>
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Undoes the last change.</TD>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
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<CODE> void</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/mxgraph/util/mxUndoManager.html#undoableEditHappened(com.mxgraph.util.mxUndoableEdit)">undoableEditHappened</A></B>(<A HREF="../../../com/mxgraph/util/mxUndoableEdit.html" title="class in com.mxgraph.util">mxUndoableEdit</A> undoableEdit)</CODE>
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<BR>
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Method to be called to add new undoable edits to the history.</TD>
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</TR>
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</TABLE>
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<A NAME="methods_inherited_from_class_com.mxgraph.util.mxEventSource"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
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<TH ALIGN="left"><B>Methods inherited from class com.mxgraph.util.<A HREF="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</A></B></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><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></TD>
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</TR>
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</TABLE>
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<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
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<TH ALIGN="left"><B>Methods inherited from class 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></B></TH>
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</TR>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<TD><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></TD>
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</TR>
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</TABLE>
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<P>
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<!-- ============ FIELD DETAIL =========== -->
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<A NAME="field_detail"><!-- --></A>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
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<B>Field Detail</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="size"><!-- --></A><H3>
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size</H3>
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<PRE>
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protected int <B>size</B></PRE>
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<DL>
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<DD>Maximum command history size. 0 means unlimited history. Default is 100.
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<P>
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<DL>
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</DL>
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</DL>
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<HR>
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<A NAME="history"><!-- --></A><H3>
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history</H3>
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<PRE>
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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><<A HREF="../../../com/mxgraph/util/mxUndoableEdit.html" title="class in com.mxgraph.util">mxUndoableEdit</A>> <B>history</B></PRE>
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<DL>
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<DD>List that contains the steps of the command history.
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<P>
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<DL>
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</DL>
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</DL>
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<HR>
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<A NAME="indexOfNextAdd"><!-- --></A><H3>
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indexOfNextAdd</H3>
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<PRE>
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protected int <B>indexOfNextAdd</B></PRE>
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<DL>
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<DD>Index of the element to be added next.
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<P>
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<DL>
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</DL>
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</DL>
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<A NAME="constructor_detail"><!-- --></A>
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<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
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<B>Constructor Detail</B></FONT></TH>
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</TR>
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</TABLE>
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<A NAME="mxUndoManager()"><!-- --></A><H3>
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mxUndoManager</H3>
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<PRE>
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public <B>mxUndoManager</B>()</PRE>
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<DL>
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<DD>Constructs a new undo manager with a default history size.
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<P>
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</DL>
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<HR>
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<A NAME="mxUndoManager(int)"><!-- --></A><H3>
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mxUndoManager</H3>
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<PRE>
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public <B>mxUndoManager</B>(int size)</PRE>
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<DL>
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<DD>Constructs a new undo manager for the specified size.
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<P>
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</DL>
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<!-- ============ METHOD DETAIL ========== -->
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<A NAME="method_detail"><!-- --></A>
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<B>Method Detail</B></FONT></TH>
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<A NAME="isEmpty()"><!-- --></A><H3>
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isEmpty</H3>
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<PRE>
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public boolean <B>isEmpty</B>()</PRE>
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<DL>
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<DD><DL>
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</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="clear()"><!-- --></A><H3>
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clear</H3>
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<PRE>
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public void <B>clear</B>()</PRE>
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<DL>
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<DD>Clears the command history.
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<P>
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<DD><DL>
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</DL>
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</DD>
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</DL>
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<HR>
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<A NAME="canUndo()"><!-- --></A><H3>
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canUndo</H3>
|
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<PRE>
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|
public boolean <B>canUndo</B>()</PRE>
|
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<DL>
|
|
<DD>Returns true if an undo is possible.
|
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<P>
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<DD><DL>
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</DL>
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</DD>
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</DL>
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<HR>
|
|
|
|
<A NAME="undo()"><!-- --></A><H3>
|
|
undo</H3>
|
|
<PRE>
|
|
public void <B>undo</B>()</PRE>
|
|
<DL>
|
|
<DD>Undoes the last change.
|
|
<P>
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<DD><DL>
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|
</DL>
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</DD>
|
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</DL>
|
|
<HR>
|
|
|
|
<A NAME="canRedo()"><!-- --></A><H3>
|
|
canRedo</H3>
|
|
<PRE>
|
|
public boolean <B>canRedo</B>()</PRE>
|
|
<DL>
|
|
<DD>Returns true if a redo is possible.
|
|
<P>
|
|
<DD><DL>
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|
</DL>
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</DD>
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</DL>
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<HR>
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|
|
|
<A NAME="redo()"><!-- --></A><H3>
|
|
redo</H3>
|
|
<PRE>
|
|
public void <B>redo</B>()</PRE>
|
|
<DL>
|
|
<DD>Redoes the last change.
|
|
<P>
|
|
<DD><DL>
|
|
</DL>
|
|
</DD>
|
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</DL>
|
|
<HR>
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|
|
|
<A NAME="undoableEditHappened(com.mxgraph.util.mxUndoableEdit)"><!-- --></A><H3>
|
|
undoableEditHappened</H3>
|
|
<PRE>
|
|
public void <B>undoableEditHappened</B>(<A HREF="../../../com/mxgraph/util/mxUndoableEdit.html" title="class in com.mxgraph.util">mxUndoableEdit</A> undoableEdit)</PRE>
|
|
<DL>
|
|
<DD>Method to be called to add new undoable edits to the history.
|
|
<P>
|
|
<DD><DL>
|
|
</DL>
|
|
</DD>
|
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</DL>
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<HR>
|
|
|
|
<A NAME="trim()"><!-- --></A><H3>
|
|
trim</H3>
|
|
<PRE>
|
|
protected void <B>trim</B>()</PRE>
|
|
<DL>
|
|
<DD>Removes all pending steps after indexOfNextAdd from the history,
|
|
invoking die on each edit. This is called from undoableEditHappened.
|
|
<P>
|
|
<DD><DL>
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</DL>
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</DD>
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</DL>
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