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</script> <noscript> <div>JavaScript is disabled on your browser.</div> </noscript> <!-- ========= START OF TOP NAVBAR ======= --> <div class="topNav"><a name="navbar.top"> <!-- --> </a> <div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div> <a name="navbar.top.firstrow"> <!-- --> </a> <ul class="navList" title="Navigation"> <li><a href="../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/ObjectBinding.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../index-all.html">Index</a></li> <li><a href="../../../help-doc.html">Help</a></li> </ul> <div class="aboutLanguage">JavaFX 8</div> </div> <div class="subNav"> <ul class="navList"> <li><a href="../../../javafx/beans/binding/NumberExpressionBase.html" title="class in javafx.beans.binding"><span class="typeNameLink">Prev Class</span></a></li> <li><a href="../../../javafx/beans/binding/ObjectExpression.html" title="class in javafx.beans.binding"><span class="typeNameLink">Next Class</span></a></li> </ul> <ul class="navList"> <li><a href="../../../index.html?javafx/beans/binding/ObjectBinding.html" target="_top">Frames</a></li> <li><a href="ObjectBinding.html" target="_top">No Frames</a></li> </ul> <ul class="navList" id="allclasses_navbar_top"> <li><a href="../../../allclasses-noframe.html">All Classes</a></li> </ul> <div> <script type="text/javascript"><!-- allClassesLink = document.getElementById("allclasses_navbar_top"); if(window==top) { allClassesLink.style.display = "block"; } else { allClassesLink.style.display = "none"; } //--> </script> </div> <div> <ul class="subNavList"> <li>Summary: </li> <li>Nested | </li> <li>Field | </li> <li><a href="#constructor.summary">Constr</a> | </li> <li><a href="#method.summary">Method</a></li> </ul> <ul class="subNavList"> <li>Detail: </li> <li>Field | </li> <li><a href="#constructor.detail">Constr</a> | </li> <li><a href="#method.detail">Method</a></li> </ul> </div> <a name="skip.navbar.top"> <!-- --> </a></div> <!-- ========= END OF TOP NAVBAR ========= --> <!-- ======== START OF CLASS DATA ======== --> <div class="header"> <div class="subTitle">javafx.beans.binding</div> <h2 title="Class ObjectBinding" class="title">Class ObjectBinding<T></h2> </div> <div class="contentContainer"> <ul class="inheritance"> <li>java.lang.Object</li> <li> <ul class="inheritance"> <li><a href="../../../javafx/beans/binding/ObjectExpression.html" title="class in javafx.beans.binding">javafx.beans.binding.ObjectExpression</a><T></li> <li> <ul class="inheritance"> <li>javafx.beans.binding.ObjectBinding<T></li> </ul> </li> </ul> </li> </ul> <div class="description"> <ul class="blockList"> <li class="blockList"> <dl> <dt><span class="paramLabel">Type Parameters:</span></dt> <dd><code>T</code> - the type of the wrapped <code>Object</code></dd> </dl> <dl> <dt>All Implemented Interfaces:</dt> <dd><a href="../../../javafx/beans/binding/Binding.html" title="interface in javafx.beans.binding">Binding</a><T>, <a href="../../../javafx/beans/Observable.html" title="interface in javafx.beans">Observable</a>, <a href="../../../javafx/beans/value/ObservableObjectValue.html" title="interface in javafx.beans.value">ObservableObjectValue</a><T>, <a href="../../../javafx/beans/value/ObservableValue.html" title="interface in javafx.beans.value">ObservableValue</a><T></dd> </dl> <hr> <br> <pre>public abstract class <span class="typeNameLabel">ObjectBinding<T></span> extends <a href="../../../javafx/beans/binding/ObjectExpression.html" title="class in javafx.beans.binding">ObjectExpression</a><T> implements <a href="../../../javafx/beans/binding/Binding.html" title="interface in javafx.beans.binding">Binding</a><T></pre> <div class="block">Base class that provides most of the functionality needed to implement a <a href="../../../javafx/beans/binding/Binding.html" title="interface in javafx.beans.binding"><code>Binding</code></a> of an <code>Object</code>. <p> <code>ObjectBinding</code> provides a simple invalidation-scheme. An extending class can register dependencies by calling <a href="../../../javafx/beans/binding/ObjectBinding.html#bind-javafx.beans.Observable...-"><code>bind(Observable...)</code></a>. If One of the registered dependencies becomes invalid, this <code>ObjectBinding</code> is marked as invalid. With <a href="../../../javafx/beans/binding/ObjectBinding.html#unbind-javafx.beans.Observable...-"><code>unbind(Observable...)</code></a> listening to dependencies can be stopped. <p> To provide a concrete implementation of this class, the method <a href="../../../javafx/beans/binding/ObjectBinding.html#computeValue--"><code>computeValue()</code></a> has to be implemented to calculate the value of this binding based on the current state of the dependencies. It is called when <a href="../../../javafx/beans/binding/ObjectBinding.html#get--"><code>get()</code></a> is called for an invalid binding. <p> See <a href="../../../javafx/beans/binding/DoubleBinding.html" title="class in javafx.beans.binding"><code>DoubleBinding</code></a> for an example how this base class can be extended.</div> <dl> <dt><span class="simpleTagLabel">Since:</span></dt> <dd>JavaFX 2.0</dd> <dt><span class="seeLabel">See Also:</span></dt> <dd><a href="../../../javafx/beans/binding/Binding.html" title="interface in javafx.beans.binding"><code>Binding</code></a>, <a href="../../../javafx/beans/binding/ObjectExpression.html" title="class in javafx.beans.binding"><code>ObjectExpression</code></a></dd> </dl> </li> </ul> </div> <div class="summary"> <ul class="blockList"> <li class="blockList"> <!-- ======== CONSTRUCTOR SUMMARY ======== --> <ul class="blockList"> <li class="blockList"><a name="constructor.summary"> <!-- --> </a> <h3>Constructor Summary</h3> <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> <caption><span>Constructors</span><span class="tabEnd"> </span></caption> <tr> <th class="colOne" scope="col">Constructor and Description</th> </tr> <tr class="altColor"> <td class="colOne"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#ObjectBinding--">ObjectBinding</a></span>()</code> </td> </tr> </table> </li> </ul> <!-- ========== METHOD SUMMARY =========== --> <ul class="blockList"> <li class="blockList"><a name="method.summary"> <!-- --> </a> <h3>Method Summary</h3> <table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> <tr> <th class="colFirst" scope="col">Modifier and Type</th> <th class="colLast" scope="col">Method and Description</th> </tr> <tr id="i0" class="altColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#addListener-javafx.beans.value.ChangeListener-">addListener</a></span>(<a href="../../../javafx/beans/value/ChangeListener.html" title="interface in javafx.beans.value">ChangeListener</a><? super <a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>> listener)</code> <div class="block">Adds a <a href="../../../javafx/beans/value/ChangeListener.html" title="interface in javafx.beans.value"><code>ChangeListener</code></a> which will be notified whenever the value of the <code>ObservableValue</code> changes.</div> </td> </tr> <tr id="i1" class="rowColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#addListener-javafx.beans.InvalidationListener-">addListener</a></span>(<a href="../../../javafx/beans/InvalidationListener.html" title="interface in javafx.beans">InvalidationListener</a> listener)</code> <div class="block">Adds an <a href="../../../javafx/beans/InvalidationListener.html" title="interface in javafx.beans"><code>InvalidationListener</code></a> which will be notified whenever the <code>Observable</code> becomes invalid.</div> </td> </tr> <tr id="i2" class="altColor"> <td class="colFirst"><code>protected void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#bind-javafx.beans.Observable...-">bind</a></span>(<a href="../../../javafx/beans/Observable.html" title="interface in javafx.beans">Observable</a>... dependencies)</code> <div class="block">Start observing the dependencies for changes.</div> </td> </tr> <tr id="i3" class="rowColor"> <td class="colFirst"><code>protected abstract <a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#computeValue--">computeValue</a></span>()</code> <div class="block">Calculates the current value of this binding.</div> </td> </tr> <tr id="i4" class="altColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#dispose--">dispose</a></span>()</code> <div class="block">A default implementation of <code>dispose()</code> that is empty.</div> </td> </tr> <tr id="i5" class="rowColor"> <td class="colFirst"><code><a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#get--">get</a></span>()</code> <div class="block">Returns the result of <a href="../../../javafx/beans/binding/ObjectBinding.html#computeValue--"><code>computeValue()</code></a>.</div> </td> </tr> <tr id="i6" class="altColor"> <td class="colFirst"><code><a href="../../../javafx/collections/ObservableList.html" title="interface in javafx.collections">ObservableList</a><?></code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#getDependencies--">getDependencies</a></span>()</code> <div class="block">A default implementation of <code>getDependencies()</code> that returns an empty <a href="../../../javafx/collections/ObservableList.html" title="interface in javafx.collections"><code>ObservableList</code></a>.</div> </td> </tr> <tr id="i7" class="rowColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#invalidate--">invalidate</a></span>()</code> <div class="block">Mark a binding as invalid.</div> </td> </tr> <tr id="i8" class="altColor"> <td class="colFirst"><code>boolean</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#isValid--">isValid</a></span>()</code> <div class="block">Checks if a binding is valid.</div> </td> </tr> <tr id="i9" class="rowColor"> <td class="colFirst"><code>protected void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#onInvalidating--">onInvalidating</a></span>()</code> <div class="block">The method onInvalidating() can be overridden by extending classes to react, if this binding becomes invalid.</div> </td> </tr> <tr id="i10" class="altColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#removeListener-javafx.beans.value.ChangeListener-">removeListener</a></span>(<a href="../../../javafx/beans/value/ChangeListener.html" title="interface in javafx.beans.value">ChangeListener</a><? super <a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>> listener)</code> <div class="block">Removes the given listener from the list of listeners, that are notified whenever the value of the <code>ObservableValue</code> changes.</div> </td> </tr> <tr id="i11" class="rowColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#removeListener-javafx.beans.InvalidationListener-">removeListener</a></span>(<a href="../../../javafx/beans/InvalidationListener.html" title="interface in javafx.beans">InvalidationListener</a> listener)</code> <div class="block">Removes the given listener from the list of listeners, that are notified whenever the value of the <code>Observable</code> becomes invalid.</div> </td> </tr> <tr id="i12" class="altColor"> <td class="colFirst"><code>java.lang.String</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#toString--">toString</a></span>()</code> <div class="block">Returns a string representation of this <code>ObjectBinding</code> object.</div> </td> </tr> <tr id="i13" class="rowColor"> <td class="colFirst"><code>protected void</code></td> <td class="colLast"><code><span class="memberNameLink"><a href="../../../javafx/beans/binding/ObjectBinding.html#unbind-javafx.beans.Observable...-">unbind</a></span>(<a href="../../../javafx/beans/Observable.html" title="interface in javafx.beans">Observable</a>... dependencies)</code> <div class="block">Stop observing the dependencies for changes.</div> </td> </tr> </table> <ul class="blockList"> <li class="blockList"><a name="methods.inherited.from.class.javafx.beans.binding.ObjectExpression"> <!-- --> </a> <h3>Methods inherited from class javafx.beans.binding.<a href="../../../javafx/beans/binding/ObjectExpression.html" title="class in javafx.beans.binding">ObjectExpression</a></h3> <code><a href="../../../javafx/beans/binding/ObjectExpression.html#asString--">asString</a>, <a href="../../../javafx/beans/binding/ObjectExpression.html#asString-java.util.Locale-java.lang.String-">asString</a>, <a href="../../../javafx/beans/binding/ObjectExpression.html#asString-java.lang.String-">asString</a>, <a href="../../../javafx/beans/binding/ObjectExpression.html#getValue--">getValue</a>, <a href="../../../javafx/beans/binding/ObjectExpression.html#isEqualTo-java.lang.Object-">isEqualTo</a>, <a href="../../../javafx/beans/binding/ObjectExpression.html#isEqualTo-javafx.beans.value.ObservableObjectValue-">isEqualTo</a>, <a href="../../../javafx/beans/binding/ObjectExpression.html#isNotEqualTo-java.lang.Object-">isNotEqualTo</a>, <a href="../../../javafx/beans/binding/ObjectExpression.html#isNotEqualTo-javafx.beans.value.ObservableObjectValue-">isNotEqualTo</a>, <a href="../../../javafx/beans/binding/ObjectExpression.html#isNotNull--">isNotNull</a>, <a href="../../../javafx/beans/binding/ObjectExpression.html#isNull--">isNull</a>, <a href="../../../javafx/beans/binding/ObjectExpression.html#objectExpression-javafx.beans.value.ObservableObjectValue-">objectExpression</a></code></li> </ul> <ul class="blockList"> <li class="blockList"><a name="methods.inherited.from.class.java.lang.Object"> <!-- --> </a> <h3>Methods inherited from class java.lang.Object</h3> <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</code></li> </ul> <ul class="blockList"> <li class="blockList"><a name="methods.inherited.from.class.javafx.beans.value.ObservableValue"> <!-- --> </a> <h3>Methods inherited from interface javafx.beans.value.<a href="../../../javafx/beans/value/ObservableValue.html" title="interface in javafx.beans.value">ObservableValue</a></h3> <code><a href="../../../javafx/beans/value/ObservableValue.html#getValue--">getValue</a></code></li> </ul> </li> </ul> </li> </ul> </div> <div class="details"> <ul class="blockList"> <li class="blockList"> <!-- ========= CONSTRUCTOR DETAIL ======== --> <ul class="blockList"> <li class="blockList"><a name="constructor.detail"> <!-- --> </a> <h3>Constructor Detail</h3> <a name="ObjectBinding--"> <!-- --> </a> <ul class="blockListLast"> <li class="blockList"> <h4>ObjectBinding</h4> <pre>public ObjectBinding()</pre> </li> </ul> </li> </ul> <!-- ============ METHOD DETAIL ========== --> <ul class="blockList"> <li class="blockList"><a name="method.detail"> <!-- --> </a> <h3>Method Detail</h3> <a name="addListener-javafx.beans.InvalidationListener-"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>addListener</h4> <pre>public void addListener(<a href="../../../javafx/beans/InvalidationListener.html" title="interface in javafx.beans">InvalidationListener</a> listener)</pre> <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../javafx/beans/Observable.html#addListener-javafx.beans.InvalidationListener-">Observable</a></code></span></div> <div class="block">Adds an <a href="../../../javafx/beans/InvalidationListener.html" title="interface in javafx.beans"><code>InvalidationListener</code></a> which will be notified whenever the <code>Observable</code> becomes invalid. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness. <p> Note that the same actual <code>InvalidationListener</code> instance may be safely registered for different <code>Observables</code>. <p> The <code>Observable</code> stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling <a href="../../../javafx/beans/Observable.html#removeListener-javafx.beans.InvalidationListener-"><code>removeListener</code></a> after use or to use an instance of <a href="../../../javafx/beans/WeakInvalidationListener.html" title="class in javafx.beans"><code>WeakInvalidationListener</code></a> avoid this situation.</div> <dl> <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> <dd><code><a href="../../../javafx/beans/Observable.html#addListener-javafx.beans.InvalidationListener-">addListener</a></code> in interface <code><a href="../../../javafx/beans/Observable.html" title="interface in javafx.beans">Observable</a></code></dd> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>listener</code> - The listener to register</dd> <dt><span class="seeLabel">See Also:</span></dt> <dd><a href="../../../javafx/beans/Observable.html#removeListener-javafx.beans.InvalidationListener-"><code>Observable.removeListener(InvalidationListener)</code></a></dd> </dl> </li> </ul> <a name="removeListener-javafx.beans.InvalidationListener-"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>removeListener</h4> <pre>public void removeListener(<a href="../../../javafx/beans/InvalidationListener.html" title="interface in javafx.beans">InvalidationListener</a> listener)</pre> <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../javafx/beans/Observable.html#removeListener-javafx.beans.InvalidationListener-">Observable</a></code></span></div> <div class="block">Removes the given listener from the list of listeners, that are notified whenever the value of the <code>Observable</code> becomes invalid. <p> If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.</div> <dl> <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> <dd><code><a href="../../../javafx/beans/Observable.html#removeListener-javafx.beans.InvalidationListener-">removeListener</a></code> in interface <code><a href="../../../javafx/beans/Observable.html" title="interface in javafx.beans">Observable</a></code></dd> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>listener</code> - The listener to remove</dd> <dt><span class="seeLabel">See Also:</span></dt> <dd><a href="../../../javafx/beans/Observable.html#addListener-javafx.beans.InvalidationListener-"><code>Observable.addListener(InvalidationListener)</code></a></dd> </dl> </li> </ul> <a name="addListener-javafx.beans.value.ChangeListener-"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>addListener</h4> <pre>public void addListener(<a href="../../../javafx/beans/value/ChangeListener.html" title="interface in javafx.beans.value">ChangeListener</a><? super <a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>> listener)</pre> <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../javafx/beans/value/ObservableValue.html#addListener-javafx.beans.value.ChangeListener-">ObservableValue</a></code></span></div> <div class="block">Adds a <a href="../../../javafx/beans/value/ChangeListener.html" title="interface in javafx.beans.value"><code>ChangeListener</code></a> which will be notified whenever the value of the <code>ObservableValue</code> changes. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness. <p> Note that the same actual <code>ChangeListener</code> instance may be safely registered for different <code>ObservableValues</code>. <p> The <code>ObservableValue</code> stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling <a href="../../../javafx/beans/value/ObservableValue.html#removeListener-javafx.beans.value.ChangeListener-"><code>removeListener</code></a> after use or to use an instance of <a href="../../../javafx/beans/value/WeakChangeListener.html" title="class in javafx.beans.value"><code>WeakChangeListener</code></a> avoid this situation.</div> <dl> <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> <dd><code><a href="../../../javafx/beans/value/ObservableValue.html#addListener-javafx.beans.value.ChangeListener-">addListener</a></code> in interface <code><a href="../../../javafx/beans/value/ObservableValue.html" title="interface in javafx.beans.value">ObservableValue</a><<a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>></code></dd> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>listener</code> - The listener to register</dd> <dt><span class="seeLabel">See Also:</span></dt> <dd><a href="../../../javafx/beans/value/ObservableValue.html#removeListener-javafx.beans.value.ChangeListener-"><code>ObservableValue.removeListener(ChangeListener)</code></a></dd> </dl> </li> </ul> <a name="removeListener-javafx.beans.value.ChangeListener-"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>removeListener</h4> <pre>public void removeListener(<a href="../../../javafx/beans/value/ChangeListener.html" title="interface in javafx.beans.value">ChangeListener</a><? super <a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>> listener)</pre> <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../javafx/beans/value/ObservableValue.html#removeListener-javafx.beans.value.ChangeListener-">ObservableValue</a></code></span></div> <div class="block">Removes the given listener from the list of listeners, that are notified whenever the value of the <code>ObservableValue</code> changes. <p> If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.</div> <dl> <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> <dd><code><a href="../../../javafx/beans/value/ObservableValue.html#removeListener-javafx.beans.value.ChangeListener-">removeListener</a></code> in interface <code><a href="../../../javafx/beans/value/ObservableValue.html" title="interface in javafx.beans.value">ObservableValue</a><<a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>></code></dd> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>listener</code> - The listener to remove</dd> <dt><span class="seeLabel">See Also:</span></dt> <dd><a href="../../../javafx/beans/value/ObservableValue.html#addListener-javafx.beans.value.ChangeListener-"><code>ObservableValue.addListener(ChangeListener)</code></a></dd> </dl> </li> </ul> <a name="bind-javafx.beans.Observable...-"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>bind</h4> <pre>protected final void bind(<a href="../../../javafx/beans/Observable.html" title="interface in javafx.beans">Observable</a>... dependencies)</pre> <div class="block">Start observing the dependencies for changes. If the value of one of the dependencies changes, the binding is marked as invalid.</div> <dl> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>dependencies</code> - the dependencies to observe</dd> </dl> </li> </ul> <a name="unbind-javafx.beans.Observable...-"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>unbind</h4> <pre>protected final void unbind(<a href="../../../javafx/beans/Observable.html" title="interface in javafx.beans">Observable</a>... dependencies)</pre> <div class="block">Stop observing the dependencies for changes.</div> <dl> <dt><span class="paramLabel">Parameters:</span></dt> <dd><code>dependencies</code> - the dependencies to stop observing</dd> </dl> </li> </ul> <a name="dispose--"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>dispose</h4> <pre>public void dispose()</pre> <div class="block">A default implementation of <code>dispose()</code> that is empty.</div> <dl> <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> <dd><code><a href="../../../javafx/beans/binding/Binding.html#dispose--">dispose</a></code> in interface <code><a href="../../../javafx/beans/binding/Binding.html" title="interface in javafx.beans.binding">Binding</a><<a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>></code></dd> </dl> </li> </ul> <a name="getDependencies--"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>getDependencies</h4> <pre>public <a href="../../../javafx/collections/ObservableList.html" title="interface in javafx.collections">ObservableList</a><?> getDependencies()</pre> <div class="block">A default implementation of <code>getDependencies()</code> that returns an empty <a href="../../../javafx/collections/ObservableList.html" title="interface in javafx.collections"><code>ObservableList</code></a>.</div> <dl> <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> <dd><code><a href="../../../javafx/beans/binding/Binding.html#getDependencies--">getDependencies</a></code> in interface <code><a href="../../../javafx/beans/binding/Binding.html" title="interface in javafx.beans.binding">Binding</a><<a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>></code></dd> <dt><span class="returnLabel">Returns:</span></dt> <dd>an empty <code>ObservableList</code></dd> </dl> </li> </ul> <a name="get--"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>get</h4> <pre>public final <a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a> get()</pre> <div class="block">Returns the result of <a href="../../../javafx/beans/binding/ObjectBinding.html#computeValue--"><code>computeValue()</code></a>. The method <code>computeValue()</code> is only called if the binding is invalid. The result is cached and returned if the binding did not become invalid since the last call of <code>get()</code>.</div> <dl> <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> <dd><code><a href="../../../javafx/beans/value/ObservableObjectValue.html#get--">get</a></code> in interface <code><a href="../../../javafx/beans/value/ObservableObjectValue.html" title="interface in javafx.beans.value">ObservableObjectValue</a><<a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>></code></dd> <dt><span class="returnLabel">Returns:</span></dt> <dd>the current value</dd> </dl> </li> </ul> <a name="onInvalidating--"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>onInvalidating</h4> <pre>protected void onInvalidating()</pre> <div class="block">The method onInvalidating() can be overridden by extending classes to react, if this binding becomes invalid. The default implementation is empty.</div> </li> </ul> <a name="invalidate--"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>invalidate</h4> <pre>public final void invalidate()</pre> <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../javafx/beans/binding/Binding.html#invalidate--">Binding</a></code></span></div> <div class="block">Mark a binding as invalid. This forces the recalculation of the value of the <code>Binding</code> next time it is request.</div> <dl> <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> <dd><code><a href="../../../javafx/beans/binding/Binding.html#invalidate--">invalidate</a></code> in interface <code><a href="../../../javafx/beans/binding/Binding.html" title="interface in javafx.beans.binding">Binding</a><<a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>></code></dd> </dl> </li> </ul> <a name="isValid--"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>isValid</h4> <pre>public final boolean isValid()</pre> <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../javafx/beans/binding/Binding.html#isValid--">Binding</a></code></span></div> <div class="block">Checks if a binding is valid.</div> <dl> <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> <dd><code><a href="../../../javafx/beans/binding/Binding.html#isValid--">isValid</a></code> in interface <code><a href="../../../javafx/beans/binding/Binding.html" title="interface in javafx.beans.binding">Binding</a><<a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a>></code></dd> <dt><span class="returnLabel">Returns:</span></dt> <dd><code>true</code> if the <code>Binding</code> is valid, <code>false</code> otherwise</dd> </dl> </li> </ul> <a name="computeValue--"> <!-- --> </a> <ul class="blockList"> <li class="blockList"> <h4>computeValue</h4> <pre>protected abstract <a href="../../../javafx/beans/binding/ObjectBinding.html" title="type parameter in ObjectBinding">T</a> computeValue()</pre> <div class="block">Calculates the current value of this binding. <p> Classes extending <code>ObjectBinding</code> have to provide an implementation of <code>computeValue</code>.</div> <dl> <dt><span class="returnLabel">Returns:</span></dt> <dd>the current value</dd> </dl> </li> </ul> <a name="toString--"> <!-- --> </a> <ul class="blockListLast"> <li class="blockList"> <h4>toString</h4> <pre>public java.lang.String toString()</pre> <div class="block">Returns a string representation of this <code>ObjectBinding</code> object.</div> <dl> <dt><span class="overrideSpecifyLabel">Overrides:</span></dt> <dd><code>toString</code> in class <code>java.lang.Object</code></dd> <dt><span class="returnLabel">Returns:</span></dt> <dd>a string representation of this <code>ObjectBinding</code> object.</dd> </dl> </li> </ul> </li> </ul> </li> </ul> </div> </div> <!-- ========= END OF CLASS DATA ========= --> <!-- ======= START OF BOTTOM NAVBAR ====== --> <div class="bottomNav"><a name="navbar.bottom"> <!-- --> </a> <div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div> <a name="navbar.bottom.firstrow"> <!-- --> </a> <ul class="navList" title="Navigation"> <li><a href="../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/ObjectBinding.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../index-all.html">Index</a></li> <li><a href="../../../help-doc.html">Help</a></li> </ul> <div class="aboutLanguage">JavaFX 8</div> </div> <div class="subNav"> <ul class="navList"> <li><a href="../../../javafx/beans/binding/NumberExpressionBase.html" title="class in javafx.beans.binding"><span class="typeNameLink">Prev Class</span></a></li> <li><a href="../../../javafx/beans/binding/ObjectExpression.html" title="class in javafx.beans.binding"><span class="typeNameLink">Next Class</span></a></li> </ul> <ul class="navList"> <li><a href="../../../index.html?javafx/beans/binding/ObjectBinding.html" target="_top">Frames</a></li> <li><a href="ObjectBinding.html" target="_top">No Frames</a></li> </ul> <ul class="navList" id="allclasses_navbar_bottom"> <li><a href="../../../allclasses-noframe.html">All Classes</a></li> </ul> <div> <script type="text/javascript"><!-- allClassesLink = document.getElementById("allclasses_navbar_bottom"); 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