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<div class="subTitle">javafx.event</div>
<h2 title="Class WeakEventHandler" class="title">Class WeakEventHandler&lt;T extends <a href="../../javafx/event/Event.html" title="class in javafx.event">Event</a>&gt;</h2>
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<li>javafx.event.WeakEventHandler&lt;T&gt;</li>
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<dt><span class="paramLabel">Type Parameters:</span></dt>
<dd><code>T</code> - the event class this handler can handle</dd>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/util/EventListener.html?is-external=true" title="class or interface in java.util">EventListener</a>, <a href="../../javafx/event/EventHandler.html" title="interface in javafx.event">EventHandler</a>&lt;T&gt;</dd>
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<pre>public final class <span class="typeNameLabel">WeakEventHandler&lt;T extends <a href="../../javafx/event/Event.html" title="class in javafx.event">Event</a>&gt;</span>
extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>
implements <a href="../../javafx/event/EventHandler.html" title="interface in javafx.event">EventHandler</a>&lt;T&gt;</pre>
<div class="block">Used in event handler registration in place of its associated event handler.
 Its sole purpose is to break the otherwise strong reference between an event
 handler container and its associated event handler. While the container still
 holds strong reference to the registered <code>WeakEventHandler</code> proxy, the
 proxy itself references the original handler only weakly and so doesn't
 prevent it from being garbage collected. Until this weak reference is broken,
 any event notification received by the proxy is forwarded to the original
 handler.</div>
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<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>JavaFX 8.0</dd>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../javafx/event/WeakEventHandler.html#WeakEventHandler-javafx.event.EventHandler-">WeakEventHandler</a></span>(<a href="../../javafx/event/EventHandler.html" title="interface in javafx.event">EventHandler</a>&lt;<a href="../../javafx/event/WeakEventHandler.html" title="type parameter in WeakEventHandler">T</a>&gt;&nbsp;eventHandler)</code>
<div class="block">Creates a new instance of <code>WeakEventHandler</code>.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javafx/event/WeakEventHandler.html#handle-T-">handle</a></span>(<a href="../../javafx/event/WeakEventHandler.html" title="type parameter in WeakEventHandler">T</a>&nbsp;event)</code>
<div class="block">Forwards event notification to the associated event handler.</div>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../javafx/event/WeakEventHandler.html#wasGarbageCollected--">wasGarbageCollected</a></span>()</code>
<div class="block">Indicates whether the associated event handler has been garbage
 collected.</div>
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<h4>WeakEventHandler</h4>
<pre>public&nbsp;WeakEventHandler(<a href="../../javafx/event/EventHandler.html" title="interface in javafx.event">EventHandler</a>&lt;<a href="../../javafx/event/WeakEventHandler.html" title="type parameter in WeakEventHandler">T</a>&gt;&nbsp;eventHandler)</pre>
<div class="block">Creates a new instance of <code>WeakEventHandler</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>eventHandler</code> - the original event handler to which to forward event
      notifications</dd>
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<h4>wasGarbageCollected</h4>
<pre>public&nbsp;boolean&nbsp;wasGarbageCollected()</pre>
<div class="block">Indicates whether the associated event handler has been garbage
 collected. Used by containers to detect when the storage of corresponding
 references to this <code>WeakEventHandler</code> is no longer necessary.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd><code>true</code> if the associated handler has been garbage
      collected, <code>false</code> otherwise</dd>
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<h4>handle</h4>
<pre>public&nbsp;void&nbsp;handle(<a href="../../javafx/event/WeakEventHandler.html" title="type parameter in WeakEventHandler">T</a>&nbsp;event)</pre>
<div class="block">Forwards event notification to the associated event handler.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../javafx/event/EventHandler.html#handle-T-">handle</a></code>&nbsp;in interface&nbsp;<code><a href="../../javafx/event/EventHandler.html" title="interface in javafx.event">EventHandler</a>&lt;<a href="../../javafx/event/WeakEventHandler.html" title="type parameter in WeakEventHandler">T</a> extends <a href="../../javafx/event/Event.html" title="class in javafx.event">Event</a>&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>event</code> - the event which occurred</dd>
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