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<div class="subTitle">org.jfree.chart.plot.dial</div>
<h2 title="Class AbstractDialLayer" class="title">Class AbstractDialLayer</h2>
</div>
<div class="contentContainer">
<ul class="inheritance">
<li>java.lang.Object</li>
<li>
<ul class="inheritance">
<li>org.jfree.chart.plot.dial.AbstractDialLayer</li>
</ul>
</li>
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<dl>
<dt>All Implemented Interfaces:</dt>
<dd><a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html" title="interface in org.jfree.chart.plot.dial">DialLayer</a></dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../org/jfree/chart/plot/dial/ArcDialFrame.html" title="class in org.jfree.chart.plot.dial">ArcDialFrame</a>, <a href="../../../../../org/jfree/chart/plot/dial/DialBackground.html" title="class in org.jfree.chart.plot.dial">DialBackground</a>, <a href="../../../../../org/jfree/chart/plot/dial/DialCap.html" title="class in org.jfree.chart.plot.dial">DialCap</a>, <a href="../../../../../org/jfree/chart/plot/dial/DialPointer.html" title="class in org.jfree.chart.plot.dial">DialPointer</a>, <a href="../../../../../org/jfree/chart/plot/dial/DialTextAnnotation.html" title="class in org.jfree.chart.plot.dial">DialTextAnnotation</a>, <a href="../../../../../org/jfree/chart/plot/dial/DialValueIndicator.html" title="class in org.jfree.chart.plot.dial">DialValueIndicator</a>, <a href="../../../../../org/jfree/chart/plot/dial/StandardDialFrame.html" title="class in org.jfree.chart.plot.dial">StandardDialFrame</a>, <a href="../../../../../org/jfree/chart/plot/dial/StandardDialRange.html" title="class in org.jfree.chart.plot.dial">StandardDialRange</a>, <a href="../../../../../org/jfree/chart/plot/dial/StandardDialScale.html" title="class in org.jfree.chart.plot.dial">StandardDialScale</a></dd>
</dl>
<hr>
<br>
<pre>public abstract class <a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.61">AbstractDialLayer</a>
extends java.lang.Object
implements <a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html" title="interface in org.jfree.chart.plot.dial">DialLayer</a></pre>
<div class="block">A base class that can be used to implement a <a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html" title="interface in org.jfree.chart.plot.dial"><code>DialLayer</code></a>.  It includes
 an event notification mechanism.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.0.7</dd>
</dl>
</li>
</ul>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier</th>
<th class="colLast" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#AbstractDialLayer--">AbstractDialLayer</a></span>()</code>
<div class="block">Creates a new instance.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#addChangeListener-org.jfree.chart.plot.dial.DialLayerChangeListener-">addChangeListener</a></span>(<a href="../../../../../org/jfree/chart/plot/dial/DialLayerChangeListener.html" title="interface in org.jfree.chart.plot.dial">DialLayerChangeListener</a>&nbsp;listener)</code>
<div class="block">Registers an object for notification of changes to the dial layer.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>java.lang.Object</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#clone--">clone</a></span>()</code>
<div class="block">Returns a clone of this instance.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#equals-java.lang.Object-">equals</a></span>(java.lang.Object&nbsp;obj)</code>
<div class="block">Tests this instance for equality with an arbitrary object.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#hashCode--">hashCode</a></span>()</code>
<div class="block">Returns a hash code for this instance.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#hasListener-java.util.EventListener-">hasListener</a></span>(java.util.EventListener&nbsp;listener)</code>
<div class="block">Returns <code>true</code> if the specified object is registered with
 the dataset as a listener.</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#isVisible--">isVisible</a></span>()</code>
<div class="block">Returns <code>true</code> if this layer is visible (should be displayed),
 and <code>false</code> otherwise.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#notifyListeners-org.jfree.chart.plot.dial.DialLayerChangeEvent-">notifyListeners</a></span>(<a href="../../../../../org/jfree/chart/plot/dial/DialLayerChangeEvent.html" title="class in org.jfree.chart.plot.dial">DialLayerChangeEvent</a>&nbsp;event)</code>
<div class="block">Notifies all registered listeners that the dial layer has changed.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#removeChangeListener-org.jfree.chart.plot.dial.DialLayerChangeListener-">removeChangeListener</a></span>(<a href="../../../../../org/jfree/chart/plot/dial/DialLayerChangeListener.html" title="interface in org.jfree.chart.plot.dial">DialLayerChangeListener</a>&nbsp;listener)</code>
<div class="block">Deregisters an object for notification of changes to the dial layer.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#setVisible-boolean-">setVisible</a></span>(boolean&nbsp;visible)</code>
<div class="block">Sets the flag that determines whether or not this layer is drawn by
 the plot, and sends a <a href="../../../../../org/jfree/chart/plot/dial/DialLayerChangeEvent.html" title="class in org.jfree.chart.plot.dial"><code>DialLayerChangeEvent</code></a> to all registered
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
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<h3>Methods inherited from interface&nbsp;org.jfree.chart.plot.dial.<a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html" title="interface in org.jfree.chart.plot.dial">DialLayer</a></h3>
<code><a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html#draw-java.awt.Graphics2D-org.jfree.chart.plot.dial.DialPlot-java.awt.geom.Rectangle2D-java.awt.geom.Rectangle2D-">draw</a>, <a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html#isClippedToWindow--">isClippedToWindow</a></code></li>
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<h4>AbstractDialLayer</h4>
<pre>protected&nbsp;<a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.72">AbstractDialLayer</a>()</pre>
<div class="block">Creates a new instance.</div>
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<pre>public&nbsp;boolean&nbsp;<a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.86">isVisible</a>()</pre>
<div class="block">Returns <code>true</code> if this layer is visible (should be displayed),
 and <code>false</code> otherwise.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html#isVisible--">isVisible</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html" title="interface in org.jfree.chart.plot.dial">DialLayer</a></code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A boolean.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#setVisible-boolean-"><code>setVisible(boolean)</code></a></dd>
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<pre>public&nbsp;void&nbsp;<a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.99">setVisible</a>(boolean&nbsp;visible)</pre>
<div class="block">Sets the flag that determines whether or not this layer is drawn by
 the plot, and sends a <a href="../../../../../org/jfree/chart/plot/dial/DialLayerChangeEvent.html" title="class in org.jfree.chart.plot.dial"><code>DialLayerChangeEvent</code></a> to all registered
 listeners.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>visible</code> - the flag.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#isVisible--"><code>isVisible()</code></a></dd>
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<pre>public&nbsp;boolean&nbsp;<a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.112">equals</a>(java.lang.Object&nbsp;obj)</pre>
<div class="block">Tests this instance for equality with an arbitrary object.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>equals</code>&nbsp;in class&nbsp;<code>java.lang.Object</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>obj</code> - the object (<code>null</code> permitted).</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A boolean.</dd>
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<h4>hashCode</h4>
<pre>public&nbsp;int&nbsp;<a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.129">hashCode</a>()</pre>
<div class="block">Returns a hash code for this instance.</div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>hashCode</code>&nbsp;in class&nbsp;<code>java.lang.Object</code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A hash code.</dd>
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<h4>clone</h4>
<pre>public&nbsp;java.lang.Object&nbsp;<a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.144">clone</a>()
                       throws java.lang.CloneNotSupportedException</pre>
<div class="block">Returns a clone of this instance.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>clone</code>&nbsp;in class&nbsp;<code>java.lang.Object</code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A clone.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code>java.lang.CloneNotSupportedException</code> - if there is a problem cloning this
     instance.</dd>
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<a name="addChangeListener-org.jfree.chart.plot.dial.DialLayerChangeListener-">
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<h4>addChangeListener</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.159">addChangeListener</a>(<a href="../../../../../org/jfree/chart/plot/dial/DialLayerChangeListener.html" title="interface in org.jfree.chart.plot.dial">DialLayerChangeListener</a>&nbsp;listener)</pre>
<div class="block">Registers an object for notification of changes to the dial layer.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html#addChangeListener-org.jfree.chart.plot.dial.DialLayerChangeListener-">addChangeListener</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html" title="interface in org.jfree.chart.plot.dial">DialLayer</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>listener</code> - the object that is being registered.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#removeChangeListener-org.jfree.chart.plot.dial.DialLayerChangeListener-"><code>removeChangeListener(DialLayerChangeListener)</code></a></dd>
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<h4>removeChangeListener</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.171">removeChangeListener</a>(<a href="../../../../../org/jfree/chart/plot/dial/DialLayerChangeListener.html" title="interface in org.jfree.chart.plot.dial">DialLayerChangeListener</a>&nbsp;listener)</pre>
<div class="block">Deregisters an object for notification of changes to the dial layer.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html#removeChangeListener-org.jfree.chart.plot.dial.DialLayerChangeListener-">removeChangeListener</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html" title="interface in org.jfree.chart.plot.dial">DialLayer</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>listener</code> - the object to deregister.</dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../org/jfree/chart/plot/dial/AbstractDialLayer.html#addChangeListener-org.jfree.chart.plot.dial.DialLayerChangeListener-"><code>addChangeListener(DialLayerChangeListener)</code></a></dd>
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<pre>public&nbsp;boolean&nbsp;<a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.185">hasListener</a>(java.util.EventListener&nbsp;listener)</pre>
<div class="block">Returns <code>true</code> if the specified object is registered with
 the dataset as a listener.  Most applications won't need to call this
 method, it exists mainly for use by unit testing code.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html#hasListener-java.util.EventListener-">hasListener</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/jfree/chart/plot/dial/DialLayer.html" title="interface in org.jfree.chart.plot.dial">DialLayer</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>listener</code> - the listener.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>A boolean.</dd>
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<h4>notifyListeners</h4>
<pre>protected&nbsp;void&nbsp;<a href="../../../../../src-html/org/jfree/chart/plot/dial/AbstractDialLayer.html#line.196">notifyListeners</a>(<a href="../../../../../org/jfree/chart/plot/dial/DialLayerChangeEvent.html" title="class in org.jfree.chart.plot.dial">DialLayerChangeEvent</a>&nbsp;event)</pre>
<div class="block">Notifies all registered listeners that the dial layer has changed.
 The <a href="../../../../../org/jfree/chart/plot/dial/DialLayerChangeEvent.html" title="class in org.jfree.chart.plot.dial"><code>DialLayerChangeEvent</code></a> provides information about the change.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>event</code> - information about the change to the axis.</dd>
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