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219 lines
8.8 KiB
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219 lines
8.8 KiB
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<div class="header">
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<div class="subTitle">
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javax.swing.event
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</div>
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<h2 class="title" title="Interface DocumentEvent">Interface DocumentEvent</h2>
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</div><div class="contentContainer">
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<div class="description">
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<dl>
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<dt>
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所有已知实现类:
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</dt>
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<dd>
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<span><a href="../../../javax/swing/text/AbstractDocument.DefaultDocumentEvent.html" title="javax.swing.text中的类">AbstractDocument.DefaultDocumentEvent</a></span>
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</dd>
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</dl>
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<hr/> <br/> <pre>public interface <span class="typeNameLabel">DocumentEvent</span></pre>
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<div class="block">
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<span>文档更改通知界面。</span>
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<span>这将向文档观察者提供有关文档更改的详细信息。</span>
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<span>它提供了高级别的信息,例如变化的类型和发生的地方,以及更详细的结构变化(插入和删除了什么元素)。</span>
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</div>
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<dl>
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<dt>
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<span class="seeLabel">另请参见:</span>
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</dt>
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<dd>
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<span><a href="../../../javax/swing/text/Document.html" title="javax.swing.text中的接口"><code>Document</code></a> , <a href="../../../javax/swing/event/DocumentListener.html" title="javax.swing.event中的接口"><code>DocumentListener</code></a></span>
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</dd>
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</dl> </li>
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</ul>
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</div>
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<div class="summary">
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<ul class="blockList">
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<li class="blockList">
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<!-- ======== NESTED CLASS SUMMARY ======== -->
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<ul class="blockList">
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<li class="blockList"><a name="nested.class.summary">
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<!-- --> </a> <h3>Nested Class Summary</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Nested Class Summary table, listing nested classes, and an explanation">
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<caption>
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<span>Nested Classes</span>
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<span class="tabEnd"> </span>
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</caption>
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<tbody>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Interface and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colFirst"><code>static interface </code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/event/DocumentEvent.ElementChange.html" title="interface in javax.swing.event">DocumentEvent.ElementChange</a></span></code>
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<div class="block">
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描述对特定元素所做的更改。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>static class </code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/event/DocumentEvent.EventType.html" title="class in javax.swing.event">DocumentEvent.EventType</a></span></code>
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<div class="block">
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文档事件类型的枚举
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</div> </td>
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</tr>
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</tbody>
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</table> </li>
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</ul>
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<!-- ========== METHOD SUMMARY =========== -->
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<ul class="blockList">
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<li class="blockList"><a name="method.summary">
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<!-- --> </a> <h3>方法摘要</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
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<caption>
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<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
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<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
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<span class="tableTab" id="t3"><span><a href="javascript:show(4);">抽象方法</a></span><span class="tabEnd"> </span></span>
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</caption>
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<tbody>
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<tr>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<th class="colLast" scope="col">Method and Description</th>
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</tr>
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<tr class="altColor" id="i0">
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<td class="colFirst"><code><a href="../../../javax/swing/event/DocumentEvent.ElementChange.html" title="interface in javax.swing.event">DocumentEvent.ElementChange</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/event/DocumentEvent.html#getChange-javax.swing.text.Element-">getChange</a></span>(<a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> elem)</code>
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<div class="block">
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获取给定元素的更改信息。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i1">
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<td class="colFirst"><code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/event/DocumentEvent.html#getDocument--">getDocument</a></span>()</code>
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<div class="block">
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获取来源于更改事件的文档。
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</div> </td>
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</tr>
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<tr class="altColor" id="i2">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/event/DocumentEvent.html#getLength--">getLength</a></span>()</code>
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<div class="block">
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返回更改的长度。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i3">
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<td class="colFirst"><code>int</code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/event/DocumentEvent.html#getOffset--">getOffset</a></span>()</code>
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<div class="block">
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返回变更开始文档中的偏移量。
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</div> </td>
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</tr>
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<tr class="altColor" id="i4">
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<td class="colFirst"><code><a href="../../../javax/swing/event/DocumentEvent.EventType.html" title="class in javax.swing.event">DocumentEvent.EventType</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/event/DocumentEvent.html#getType--">getType</a></span>()</code>
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<div class="block">
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获取事件的类型。
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</div> </td>
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</tr>
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</tbody>
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</table> </li>
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</ul> </li>
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</ul>
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</div>
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<div class="details">
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<ul class="blockList">
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<li class="blockList">
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<!-- ============ METHOD DETAIL ========== -->
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<ul class="blockList">
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<li class="blockList"><a name="method.detail">
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<!-- --> </a> <h3>方法详细信息</h3> <a name="getOffset--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>getOffset</h4> <pre>int getOffset()</pre>
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<div class="block">
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返回变更开始文档中的偏移量。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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offset> = 0
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</dd>
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</dl> </li>
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</ul> <a name="getLength--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>getLength</h4> <pre>int getLength()</pre>
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<div class="block">
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返回更改的长度。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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长度> = 0
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</dd>
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</dl> </li>
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</ul> <a name="getDocument--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>getDocument</h4> <pre><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a> getDocument()</pre>
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<div class="block">
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获取来源于更改事件的文档。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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文件
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</dd>
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</dl> </li>
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</ul> <a name="getType--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>getType</h4> <pre><a href="../../../javax/swing/event/DocumentEvent.EventType.html" title="class in javax.swing.event">DocumentEvent.EventType</a> getType()</pre>
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<div class="block">
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获取事件的类型。
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</div>
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<dl>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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方式
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</dd>
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</dl> </li>
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</ul> <a name="getChange-javax.swing.text.Element-">
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<!-- --> </a>
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<ul class="blockListLast">
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<li class="blockList"> <h4>getChange</h4> <pre><a href="../../../javax/swing/event/DocumentEvent.ElementChange.html" title="interface in javax.swing.event">DocumentEvent.ElementChange</a> getChange(<a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> elem)</pre>
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<div class="block">
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<span>获取给定元素的更改信息。</span>
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<span>更改信息描述添加和删除的元素以及位置。</span>
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<span>如果没有更改,则返回null。</span>
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<p> <span>这种方法是观察者发现所做的结构变化。</span> <span>这意味着只有突变之前存在的元素(并且在突变之后仍然存在)需要具有ElementChange记录。</span> <span>可用的更改不需要递归。</span> </p>
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<p> <span>例如,如果一个元素从其父项中移除,则此方法应报告父更改,并提供描述父对象的更改的ElementChange实现。</span> <span>如果删除的子元素有子元素,则不需要将这些元素报告为已删除。</span> </p>
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<p> <span>如果子元素插入到父元素中,则父元素应该报告更改。</span> <span>如果子元素也插入了元素(孙子对父),这些元素不需要报告更改。</span> </p>
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</div>
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<dl>
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<dt>
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<span class="paramLabel">参数</span>
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</dt>
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<dd>
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<code>elem</code> - 元素
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</dd>
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<dt>
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<span class="returnLabel">结果</span>
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</dt>
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<dd>
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更改信息,如果元素未被修改,则为null
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</dd>
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</dl> </li>
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</ul> </li>
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</ul> </li>
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</ul>
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</div>
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</div> |