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mxUndoManager (mxGraph 1.10.3.1 API Specification)
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com.mxgraph.util< / FONT >
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Class mxUndoManager< / H2 >
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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 >
< 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 >
< IMG SRC = "../../../resources/inherit.gif" ALT = "extended by " > < B > com.mxgraph.util.mxUndoManager< / B >
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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 >
< / PRE >
< P >
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.
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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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< 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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< 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 >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#history" > history< / A > < / B > < / CODE >
< BR >
List that contains the steps of the command history.< / TD >
< / TR >
< TR BGCOLOR = "white" CLASS = "TableRowColor" >
< TD ALIGN = "right" VALIGN = "top" WIDTH = "1%" > < FONT SIZE = "-1" >
< CODE > protected int< / CODE > < / FONT > < / TD >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#indexOfNextAdd" > indexOfNextAdd< / A > < / B > < / CODE >
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Index of the element to be added next.< / TD >
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< TR BGCOLOR = "white" CLASS = "TableRowColor" >
< TD ALIGN = "right" VALIGN = "top" WIDTH = "1%" > < FONT SIZE = "-1" >
< CODE > protected int< / CODE > < / FONT > < / TD >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#size" > size< / A > < / B > < / CODE >
< BR >
Maximum command history size.< / TD >
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< A NAME = "fields_inherited_from_class_com.mxgraph.util.mxEventSource" > <!-- --> < / A >
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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 BGCOLOR = "white" CLASS = "TableRowColor" >
< 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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< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#mxUndoManager()" > mxUndoManager< / A > < / B > ()< / CODE >
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Constructs a new undo manager with a default history size.< / TD >
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< TR BGCOLOR = "white" CLASS = "TableRowColor" >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#mxUndoManager(int)" > mxUndoManager< / A > < / B > (int size)< / CODE >
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Constructs a new undo manager for the specified size.< / TD >
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< CODE > boolean< / CODE > < / FONT > < / TD >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#canRedo()" > canRedo< / A > < / B > ()< / CODE >
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Returns true if a redo is possible.< / TD >
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< TR BGCOLOR = "white" CLASS = "TableRowColor" >
< TD ALIGN = "right" VALIGN = "top" WIDTH = "1%" > < FONT SIZE = "-1" >
< CODE > boolean< / CODE > < / FONT > < / TD >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#canUndo()" > canUndo< / A > < / B > ()< / CODE >
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Returns true if an undo is possible.< / TD >
< / TR >
< TR BGCOLOR = "white" CLASS = "TableRowColor" >
< TD ALIGN = "right" VALIGN = "top" WIDTH = "1%" > < FONT SIZE = "-1" >
< CODE > void< / CODE > < / FONT > < / TD >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#clear()" > clear< / A > < / B > ()< / CODE >
< BR >
Clears the command history.< / TD >
< / TR >
< TR BGCOLOR = "white" CLASS = "TableRowColor" >
< TD ALIGN = "right" VALIGN = "top" WIDTH = "1%" > < FONT SIZE = "-1" >
< CODE > boolean< / CODE > < / FONT > < / TD >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#isEmpty()" > isEmpty< / A > < / B > ()< / CODE >
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< / TD >
< / TR >
< TR BGCOLOR = "white" CLASS = "TableRowColor" >
< TD ALIGN = "right" VALIGN = "top" WIDTH = "1%" > < FONT SIZE = "-1" >
< CODE > void< / CODE > < / FONT > < / TD >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#redo()" > redo< / A > < / B > ()< / CODE >
< BR >
Redoes the last change.< / TD >
< / TR >
< TR BGCOLOR = "white" CLASS = "TableRowColor" >
< TD ALIGN = "right" VALIGN = "top" WIDTH = "1%" > < FONT SIZE = "-1" >
< CODE > protected void< / CODE > < / FONT > < / TD >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#trim()" > trim< / A > < / B > ()< / CODE >
< BR >
Removes all pending steps after indexOfNextAdd from the history,
invoking die on each edit.< / TD >
< / TR >
< TR BGCOLOR = "white" CLASS = "TableRowColor" >
< TD ALIGN = "right" VALIGN = "top" WIDTH = "1%" > < FONT SIZE = "-1" >
< CODE > void< / CODE > < / FONT > < / TD >
< TD > < CODE > < B > < A HREF = "../../../com/mxgraph/util/mxUndoManager.html#undo()" > undo< / A > < / B > ()< / CODE >
< BR >
Undoes the last change.< / TD >
< / TR >
< TR BGCOLOR = "white" CLASS = "TableRowColor" >
< TD ALIGN = "right" VALIGN = "top" WIDTH = "1%" > < FONT SIZE = "-1" >
< CODE > void< / CODE > < / FONT > < / TD >
< 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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Method to be called to add new undoable edits to the history.< / TD >
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< A NAME = "methods_inherited_from_class_com.mxgraph.util.mxEventSource" > <!-- --> < / A >
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< TR BGCOLOR = "#EEEEFF" CLASS = "TableSubHeadingColor" >
< 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 BGCOLOR = "white" CLASS = "TableRowColor" >
< 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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<!-- ============ FIELD DETAIL =========== -->
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< A NAME = "size" > <!-- --> < / A > < H3 >
size< / H3 >
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protected int < B > size< / B > < / PRE >
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< DD > Maximum command history size. 0 means unlimited history. Default is 100.
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< / DL >
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< A NAME = "history" > <!-- --> < / A > < H3 >
history< / H3 >
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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 >
< DL >
< DD > List that contains the steps of the command history.
< P >
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< / DL >
< / DL >
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< A NAME = "indexOfNextAdd" > <!-- --> < / A > < H3 >
indexOfNextAdd< / H3 >
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protected int < B > indexOfNextAdd< / B > < / PRE >
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< DD > Index of the element to be added next.
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
< A NAME = "constructor_detail" > <!-- --> < / A >
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< B > Constructor Detail< / B > < / FONT > < / TH >
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< / TABLE >
< A NAME = "mxUndoManager()" > <!-- --> < / A > < H3 >
mxUndoManager< / H3 >
< PRE >
public < B > mxUndoManager< / B > ()< / PRE >
< DL >
< DD > Constructs a new undo manager with a default history size.
< P >
< / DL >
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< A NAME = "mxUndoManager(int)" > <!-- --> < / A > < H3 >
mxUndoManager< / H3 >
< PRE >
public < B > mxUndoManager< / B > (int size)< / PRE >
< DL >
< DD > Constructs a new undo manager for the specified size.
< P >
< / DL >
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< / TABLE >
< A NAME = "isEmpty()" > <!-- --> < / A > < H3 >
isEmpty< / H3 >
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public boolean < B > isEmpty< / B > ()< / PRE >
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< DD > < DL >
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< / DD >
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< HR >
< A NAME = "clear()" > <!-- --> < / A > < H3 >
clear< / H3 >
< PRE >
public void < B > clear< / B > ()< / PRE >
< DL >
< DD > Clears the command history.
< P >
< DD > < DL >
< / DL >
< / DD >
< / DL >
< HR >
< A NAME = "canUndo()" > <!-- --> < / A > < H3 >
canUndo< / H3 >
< PRE >
public boolean < B > canUndo< / B > ()< / PRE >
< DL >
< DD > Returns true if an undo is possible.
< P >
< DD > < DL >
< / DL >
< / DD >
< / DL >
< HR >
< A NAME = "undo()" > <!-- --> < / A > < H3 >
undo< / H3 >
< PRE >
public void < B > undo< / B > ()< / PRE >
< DL >
< DD > Undoes the last change.
< P >
< DD > < DL >
< / DL >
< / DD >
< / 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 >
< / DL >
< / DD >
< / DL >
< HR >
< 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 >
< / DL >
< HR >
< 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 >
< / DL >
< 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 >
< / DL >
< / DD >
< / DL >
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