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<title>mxConnectPreview (mxGraph 4.1.1 API Specification)</title>
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<h2 title="Class mxConnectPreview" class="title">Class mxConnectPreview</h2>
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<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
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<li><a href="../../util/mxEventSource.html" title="class in com.mxgraph.util">com.mxgraph.util.mxEventSource</a></li>
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<li>com.mxgraph.swing.handler.mxConnectPreview</li>
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<pre>public class <span class="typeNameLabel">mxConnectPreview</span>
extends <a href="../../util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</a></pre>
<div class="block">Connection handler creates new connections between cells. This control is used to display the connector
icon, while the preview is used to draw the line.</div>
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<code><a href="../../util/mxEventSource.mxIEventListener.html" title="interface in com.mxgraph.util">mxEventSource.mxIEventListener</a></code></li>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../mxGraphComponent.html" title="class in com.mxgraph.swing">mxGraphComponent</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#graphComponent">graphComponent</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#previewState">previewState</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#sourceState">sourceState</a></span></code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../util/mxPoint.html" title="class in com.mxgraph.util">mxPoint</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#startPoint">startPoint</a></span></code></th>
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<h3>Fields inherited from class&nbsp;com.mxgraph.util.<a href="../../util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</a></h3>
<code><a href="../../util/mxEventSource.html#eventListeners">eventListeners</a>, <a href="../../util/mxEventSource.html#eventsEnabled">eventsEnabled</a>, <a href="../../util/mxEventSource.html#eventSource">eventSource</a></code></li>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(com.mxgraph.swing.mxGraphComponent)">mxConnectPreview</a></span>&#8203;(<a href="../mxGraphComponent.html" title="class in com.mxgraph.swing">mxGraphComponent</a>&nbsp;graphComponent)</code></th>
<td class="colLast">&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
<th class="colLast" scope="col">Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>protected java.lang.Object</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#createCell(com.mxgraph.view.mxCellState,java.lang.String)">createCell</a></span>&#8203;(<a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a>&nbsp;startState,
java.lang.String&nbsp;style)</code></th>
<td class="colLast">
<div class="block">Creates a new instance of mxShape for previewing the edge.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>protected java.awt.Rectangle</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getDirtyRect()">getDirtyRect</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>protected java.awt.Rectangle</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getDirtyRect(com.mxgraph.util.mxRectangle)">getDirtyRect</a></span>&#8203;(<a href="../../util/mxRectangle.html" title="class in com.mxgraph.util">mxRectangle</a>&nbsp;dirty)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getPreviewState()">getPreviewState</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getSourceState()">getSourceState</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../util/mxPoint.html" title="class in com.mxgraph.util">mxPoint</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getStartPoint()">getStartPoint</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isActive()">isActive</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#paint(java.awt.Graphics)">paint</a></span>&#8203;(java.awt.Graphics&nbsp;g)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#paintPreview(com.mxgraph.canvas.mxGraphics2DCanvas)">paintPreview</a></span>&#8203;(<a href="../../canvas/mxGraphics2DCanvas.html" title="class in com.mxgraph.canvas">mxGraphics2DCanvas</a>&nbsp;canvas)</code></th>
<td class="colLast">
<div class="block">Draws the preview using the graphics canvas.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#revalidate(com.mxgraph.view.mxCellState)">revalidate</a></span>&#8203;(<a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a>&nbsp;state)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#start(java.awt.event.MouseEvent,com.mxgraph.view.mxCellState,java.lang.String)">start</a></span>&#8203;(java.awt.event.MouseEvent&nbsp;e,
<a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a>&nbsp;startState,
java.lang.String&nbsp;style)</code></th>
<td class="colLast">
<div class="block">Updates the style of the edge preview from the incoming edge</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#stop(boolean)">stop</a></span>&#8203;(boolean&nbsp;commit)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#stop(boolean,java.awt.event.MouseEvent)">stop</a></span>&#8203;(boolean&nbsp;commit,
java.awt.event.MouseEvent&nbsp;e)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>protected <a href="../../util/mxPoint.html" title="class in com.mxgraph.util">mxPoint</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#transformScreenPoint(double,double)">transformScreenPoint</a></span>&#8203;(double&nbsp;x,
double&nbsp;y)</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="#update(java.awt.event.MouseEvent,com.mxgraph.view.mxCellState,double,double)">update</a></span>&#8203;(java.awt.event.MouseEvent&nbsp;e,
<a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a>&nbsp;targetState,
double&nbsp;x,
double&nbsp;y)</code></th>
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<h3>Methods inherited from class&nbsp;com.mxgraph.util.<a href="../../util/mxEventSource.html" title="class in com.mxgraph.util">mxEventSource</a></h3>
<code><a href="../../util/mxEventSource.html#addListener(java.lang.String,com.mxgraph.util.mxEventSource.mxIEventListener)">addListener</a>, <a href="../../util/mxEventSource.html#fireEvent(com.mxgraph.util.mxEventObject)">fireEvent</a>, <a href="../../util/mxEventSource.html#fireEvent(com.mxgraph.util.mxEventObject,java.lang.Object)">fireEvent</a>, <a href="../../util/mxEventSource.html#getEventSource()">getEventSource</a>, <a href="../../util/mxEventSource.html#isEventsEnabled()">isEventsEnabled</a>, <a href="../../util/mxEventSource.html#removeListener(com.mxgraph.util.mxEventSource.mxIEventListener)">removeListener</a>, <a href="../../util/mxEventSource.html#removeListener(com.mxgraph.util.mxEventSource.mxIEventListener,java.lang.String)">removeListener</a>, <a href="../../util/mxEventSource.html#setEventsEnabled(boolean)">setEventsEnabled</a>, <a href="../../util/mxEventSource.html#setEventSource(java.lang.Object)">setEventSource</a></code></li>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<h3>Field Detail</h3>
<a id="graphComponent">
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<h4>graphComponent</h4>
<pre>protected&nbsp;<a href="../mxGraphComponent.html" title="class in com.mxgraph.swing">mxGraphComponent</a> graphComponent</pre>
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<pre>protected&nbsp;<a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a> previewState</pre>
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<h4>sourceState</h4>
<pre>protected&nbsp;<a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a> sourceState</pre>
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<h4>startPoint</h4>
<pre>protected&nbsp;<a href="../../util/mxPoint.html" title="class in com.mxgraph.util">mxPoint</a> startPoint</pre>
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<h4>mxConnectPreview</h4>
<pre>public&nbsp;mxConnectPreview&#8203;(<a href="../mxGraphComponent.html" title="class in com.mxgraph.swing">mxGraphComponent</a>&nbsp;graphComponent)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>graphComponent</code> - </dd>
</dl>
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<a id="createCell(com.mxgraph.view.mxCellState,java.lang.String)">
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<h4>createCell</h4>
<pre class="methodSignature">protected&nbsp;java.lang.Object&nbsp;createCell&#8203;(<a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a>&nbsp;startState,
java.lang.String&nbsp;style)</pre>
<div class="block">Creates a new instance of mxShape for previewing the edge.</div>
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<pre class="methodSignature">public&nbsp;boolean&nbsp;isActive()</pre>
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<h4>getSourceState</h4>
<pre class="methodSignature">public&nbsp;<a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a>&nbsp;getSourceState()</pre>
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<h4>getPreviewState</h4>
<pre class="methodSignature">public&nbsp;<a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a>&nbsp;getPreviewState()</pre>
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<h4>getStartPoint</h4>
<pre class="methodSignature">public&nbsp;<a href="../../util/mxPoint.html" title="class in com.mxgraph.util">mxPoint</a>&nbsp;getStartPoint()</pre>
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<h4>start</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;start&#8203;(java.awt.event.MouseEvent&nbsp;e,
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java.lang.String&nbsp;style)</pre>
<div class="block">Updates the style of the edge preview from the incoming edge</div>
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<h4>update</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;update&#8203;(java.awt.event.MouseEvent&nbsp;e,
<a href="../../view/mxCellState.html" title="class in com.mxgraph.view">mxCellState</a>&nbsp;targetState,
double&nbsp;x,
double&nbsp;y)</pre>
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<pre class="methodSignature">protected&nbsp;java.awt.Rectangle&nbsp;getDirtyRect()</pre>
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<pre class="methodSignature">protected&nbsp;java.awt.Rectangle&nbsp;getDirtyRect&#8203;(<a href="../../util/mxRectangle.html" title="class in com.mxgraph.util">mxRectangle</a>&nbsp;dirty)</pre>
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<a id="transformScreenPoint(double,double)">
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<pre class="methodSignature">protected&nbsp;<a href="../../util/mxPoint.html" title="class in com.mxgraph.util">mxPoint</a>&nbsp;transformScreenPoint&#8203;(double&nbsp;x,
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