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<h2 title="Class mxGraphSelectionModel" class="title">Class mxGraphSelectionModel</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
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<pre>public class <span class="typeNameLabel">mxGraphSelectionModel</span>
extends <a href="../../../com/mxgraph/util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</a></pre>
<div class="block">Implements the selection model for a graph.
This class fires the following events:
mxEvent.UNDO fires after the selection was changed in changeSelection. The
<code>edit</code> property contains the mxUndoableEdit which contains the
mxSelectionChange.
mxEvent.CHANGE fires after the selection changes by executing an
mxSelectionChange. The <code>added</code> and <code>removed</code>
properties contain Collections of cells that have been added to or removed
from the selection, respectively.
NOTE: Due to a historic bug that cannot be changed at this point the
names of the properties are "reversed".
To add a change listener to the graph selection model:
<code>
addListener(
mxEvent.CHANGE, new mxIEventListener()
{
public void invoke(Object sender, mxEventObject evt)
{
mxGraphSelectionModel model = (mxSelectionModel) sender;
Collection added = (Collection) evt.getProperty("added");
Collection removed = (Collection) evt.getProperty("removed");
selectionChanged(model, added, removed);
}
});
</code></div>
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<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.mxSelectionChange.html" title="class in com.mxgraph.view">mxGraphSelectionModel.mxSelectionChange</a></span></code></th>
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<td class="colFirst"><code>protected java.util.Set&lt;java.lang.Object&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#cells">cells</a></span></code></th>
<td class="colLast">
<div class="block">Holds the selection cells.</div>
</td>
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<td class="colFirst"><code>protected <a href="../../../com/mxgraph/view/mxGraph.html" title="class in com.mxgraph.view">mxGraph</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#graph">graph</a></span></code></th>
<td class="colLast">
<div class="block">Reference to the enclosing graph.</div>
</td>
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<td class="colFirst"><code>protected boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#singleSelection">singleSelection</a></span></code></th>
<td class="colLast">
<div class="block">Specifies if only one selected item at a time is allowed.</div>
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<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>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#mxGraphSelectionModel-com.mxgraph.view.mxGraph-">mxGraphSelectionModel</a></span>&#8203;(<a href="../../../com/mxgraph/view/mxGraph.html" title="class in com.mxgraph.view">mxGraph</a>&nbsp;graph)</code></th>
<td class="colLast">
<div class="block">Constructs a new selection model for the specified graph.</div>
</td>
</tr>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#addCell-java.lang.Object-">addCell</a></span>&#8203;(java.lang.Object&nbsp;cell)</code></th>
<td class="colLast">
<div class="block">Adds the given cell to the selection.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#addCells-java.lang.Object:A-">addCells</a></span>&#8203;(java.lang.Object[]&nbsp;cells)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#cellAdded-java.lang.Object-">cellAdded</a></span>&#8203;(java.lang.Object&nbsp;cell)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#cellRemoved-java.lang.Object-">cellRemoved</a></span>&#8203;(java.lang.Object&nbsp;cell)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#changeSelection-java.util.Collection-java.util.Collection-">changeSelection</a></span>&#8203;(java.util.Collection&lt;java.lang.Object&gt;&nbsp;added,
java.util.Collection&lt;java.lang.Object&gt;&nbsp;removed)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#clear--">clear</a></span>()</code></th>
<td class="colLast">
<div class="block">Clears the selection.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#getCell--">getCell</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the first selected cell.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>java.lang.Object[]</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#getCells--">getCells</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the selection cells.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>protected java.lang.Object</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#getFirstSelectableCell-java.lang.Object:A-">getFirstSelectableCell</a></span>&#8203;(java.lang.Object[]&nbsp;cells)</code></th>
<td class="colLast">
<div class="block">Returns the first selectable cell in the given array of cells.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#isEmpty--">isEmpty</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns true if no cells are selected.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#isSelected-java.lang.Object-">isSelected</a></span>&#8203;(java.lang.Object&nbsp;cell)</code></th>
<td class="colLast">
<div class="block">Returns true if the given cell is selected.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#isSingleSelection--">isSingleSelection</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#removeCell-java.lang.Object-">removeCell</a></span>&#8203;(java.lang.Object&nbsp;cell)</code></th>
<td class="colLast">
<div class="block">Removes the given cell from the selection.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#removeCells-java.lang.Object:A-">removeCells</a></span>&#8203;(java.lang.Object[]&nbsp;cells)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#setCell-java.lang.Object-">setCell</a></span>&#8203;(java.lang.Object&nbsp;cell)</code></th>
<td class="colLast">
<div class="block">Clears the selection and adds the given cell to the selection.</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#setCells-java.lang.Object:A-">setCells</a></span>&#8203;(java.lang.Object[]&nbsp;cells)</code></th>
<td class="colLast">
<div class="block">Clears the selection and adds the given cells.</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#setSingleSelection-boolean-">setSingleSelection</a></span>&#8203;(boolean&nbsp;singleSelection)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../com/mxgraph/view/mxGraphSelectionModel.html#size--">size</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the number of selected cells.</div>
</td>
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<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>
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<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h4>graph</h4>
<pre>protected&nbsp;<a href="../../../com/mxgraph/view/mxGraph.html" title="class in com.mxgraph.view">mxGraph</a> graph</pre>
<div class="block">Reference to the enclosing graph.</div>
</li>
</ul>
<a name="singleSelection">
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</a>
<ul class="blockList">
<li class="blockList">
<h4>singleSelection</h4>
<pre>protected&nbsp;boolean singleSelection</pre>
<div class="block">Specifies if only one selected item at a time is allowed.
Default is false.</div>
</li>
</ul>
<a name="cells">
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</a>
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<h4>cells</h4>
<pre>protected&nbsp;java.util.Set&lt;java.lang.Object&gt; cells</pre>
<div class="block">Holds the selection cells.</div>
</li>
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</li>
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<h4>mxGraphSelectionModel</h4>
<pre>public&nbsp;mxGraphSelectionModel&#8203;(<a href="../../../com/mxgraph/view/mxGraph.html" title="class in com.mxgraph.view">mxGraph</a>&nbsp;graph)</pre>
<div class="block">Constructs a new selection model for the specified graph.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>graph</code> - </dd>
</dl>
</li>
</ul>
</li>
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<h4>isSingleSelection</h4>
<pre>public&nbsp;boolean&nbsp;isSingleSelection()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the singleSelection</dd>
</dl>
</li>
</ul>
<a name="setSingleSelection-boolean-">
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<pre>public&nbsp;void&nbsp;setSingleSelection&#8203;(boolean&nbsp;singleSelection)</pre>
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<dd><code>singleSelection</code> - the singleSelection to set</dd>
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<pre>public&nbsp;boolean&nbsp;isSelected&#8203;(java.lang.Object&nbsp;cell)</pre>
<div class="block">Returns true if the given cell is selected.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cell</code> - </dd>
<dt><span class="returnLabel">Returns:</span></dt>
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<pre>public&nbsp;boolean&nbsp;isEmpty()</pre>
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<pre>public&nbsp;int&nbsp;size()</pre>
<div class="block">Returns the number of selected cells.</div>
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<h4>clear</h4>
<pre>public&nbsp;void&nbsp;clear()</pre>
<div class="block">Clears the selection.</div>
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<h4>getCell</h4>
<pre>public&nbsp;java.lang.Object&nbsp;getCell()</pre>
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<pre>public&nbsp;java.lang.Object[]&nbsp;getCells()</pre>
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<pre>public&nbsp;void&nbsp;setCell&#8203;(java.lang.Object&nbsp;cell)</pre>
<div class="block">Clears the selection and adds the given cell to the selection.</div>
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<pre>public&nbsp;void&nbsp;setCells&#8203;(java.lang.Object[]&nbsp;cells)</pre>
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<pre>protected&nbsp;java.lang.Object&nbsp;getFirstSelectableCell&#8203;(java.lang.Object[]&nbsp;cells)</pre>
<div class="block">Returns the first selectable cell in the given array of cells.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>cells</code> - Array of cells to return the first selectable cell for.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
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<pre>public&nbsp;void&nbsp;addCell&#8203;(java.lang.Object&nbsp;cell)</pre>
<div class="block">Adds the given cell to the selection.</div>
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<pre>public&nbsp;void&nbsp;addCells&#8203;(java.lang.Object[]&nbsp;cells)</pre>
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<pre>public&nbsp;void&nbsp;removeCell&#8203;(java.lang.Object&nbsp;cell)</pre>
<div class="block">Removes the given cell from the selection.</div>
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<pre>public&nbsp;void&nbsp;removeCells&#8203;(java.lang.Object[]&nbsp;cells)</pre>
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<pre>protected&nbsp;void&nbsp;changeSelection&#8203;(java.util.Collection&lt;java.lang.Object&gt;&nbsp;added,
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<pre>protected&nbsp;void&nbsp;cellAdded&#8203;(java.lang.Object&nbsp;cell)</pre>
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<pre>protected&nbsp;void&nbsp;cellRemoved&#8203;(java.lang.Object&nbsp;cell)</pre>
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