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https://github.com/fofolee/uTools-Manuals.git
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285 lines
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285 lines
12 KiB
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<div class="header">
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<div class="subTitle">
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javax.swing.text
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</div>
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<h2 class="title" title="Class ElementIterator">Class ElementIterator</h2>
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</div><div class="contentContainer">
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<ul class="inheritance">
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<li><a href="../../../java/lang/Object.html" title="class in java.lang">java.lang.Object</a></li>
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<li>
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<ul class="inheritance">
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<li>javax.swing.text.ElementIterator</li>
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</ul> </li>
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</ul>
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<div class="description">
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<dl>
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<dt>
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All Implemented Interfaces:
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</dt>
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<dd>
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<span><a href="../../../java/lang/Cloneable.html" title="java.lang中的接口">Cloneable</a></span>
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</dd>
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</dl>
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<hr/> <br/> <pre>public class <span class="typeNameLabel">ElementIterator</span>
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extends <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>
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implements <a href="../../../java/lang/Cloneable.html" title="interface in java.lang">Cloneable</a></pre>
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<div class="block">
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<p> <span>ElementIterator，顾名思义，遍历Element树。</span> <span>可以使用Document或Element作为参数来调用构造函数。</span> <span>如果使用Document作为参数调用构造函数，则迭代的根是document.getDefaultRootElement（）的返回值。</span> <span>迭代以深度优先的方式发生。</span> <span>关于边界条件如何处理：a）如果在first（）或current（）之前调用next（），则返回根。</span> <span>b）next（）返回null表示列表的结尾。</span> <span>c）previous（）当当前元素为根或next（）返回null时返回null。</span> <span>ElementIterator没有锁定元素树。</span> <span>这意味着它不会跟踪任何更改。</span> <span>这个类的用户有责任确保在元素迭代期间不发生变化。</span> <span>简单的使用示例：public void iterate（）{ElementIterator it = new ElementIterator（root）;</span> <span>元素元素</span> <span>while（true）{if（（elem = next（））！= null）{// process element System.out.println（“elem：”+ elem.getName（））;</span> <span>} else {break;</span> <span>}}}</span> </p>
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</div> </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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<!-- ======== CONSTRUCTOR SUMMARY ======== -->
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<ul class="blockList">
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<li class="blockList"><a name="constructor.summary">
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<!-- --> </a> <h3>构造方法摘要</h3>
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Constructor Summary table, listing constructors, and an explanation">
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<caption>
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<span>构造方法</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="colOne" scope="col">Constructor and Description</th>
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</tr>
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<tr class="altColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/swing/text/ElementIterator.html#ElementIterator-javax.swing.text.Document-">ElementIterator</a></span>(<a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a> document)</code>
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<div class="block">
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创建一个新的ElementIterator。
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</div> </td>
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</tr>
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<tr class="rowColor">
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../javax/swing/text/ElementIterator.html#ElementIterator-javax.swing.text.Element-">ElementIterator</a></span>(<a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> root)</code>
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<div class="block">
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创建一个新的ElementIterator。
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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="t4"><span><a href="javascript:show(8);">具体的方法</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="../../../java/lang/Object.html" title="class in java.lang">Object</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/ElementIterator.html#clone--">clone</a></span>()</code>
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<div class="block">
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克隆ElementIterator。
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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/Element.html" title="interface in javax.swing.text">Element</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/ElementIterator.html#current--">current</a></span>()</code>
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<div class="block">
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获取当前元素。
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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/text/ElementIterator.html#depth--">depth</a></span>()</code>
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<div class="block">
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获取元素树的当前深度。
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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><a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/ElementIterator.html#first--">first</a></span>()</code>
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<div class="block">
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获取第一个元素
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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/text/Element.html" title="interface in javax.swing.text">Element</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/ElementIterator.html#next--">next</a></span>()</code>
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<div class="block">
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获取下一个元素。
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</div> </td>
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</tr>
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<tr class="rowColor" id="i5">
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<td class="colFirst"><code><a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a></code></td>
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<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/ElementIterator.html#previous--">previous</a></span>()</code>
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<div class="block">
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获取上一个元素。
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</div> </td>
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</tr>
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</tbody>
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</table>
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<ul class="blockList">
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<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
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<!-- --> </a> <h3>Methods inherited from class java.lang.<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></h3> <code><a href="../../../java/lang/Object.html#equals-java.lang.Object-">equals</a>, <a href="../../../java/lang/Object.html#finalize--">finalize</a>, <a href="../../../java/lang/Object.html#getClass--">getClass</a>, <a href="../../../java/lang/Object.html#hashCode--">hashCode</a>, <a href="../../../java/lang/Object.html#notify--">notify</a>, <a href="../../../java/lang/Object.html#notifyAll--">notifyAll</a>, <a href="../../../java/lang/Object.html#toString--">toString</a>, <a href="../../../java/lang/Object.html#wait--">wait</a>, <a href="../../../java/lang/Object.html#wait-long-">wait</a>, <a href="../../../java/lang/Object.html#wait-long-int-">wait</a></code></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 class="details">
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<ul class="blockList">
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<li class="blockList">
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<!-- ========= CONSTRUCTOR DETAIL ======== -->
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<ul class="blockList">
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<li class="blockList"><a name="constructor.detail">
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<!-- --> </a> <h3>构造方法详细信息</h3> <a name="ElementIterator-javax.swing.text.Document-">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>ElementIterator</h4> <pre>public ElementIterator(<a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a> document)</pre>
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<div class="block">
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<span>创建一个新的ElementIterator。</span>
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<span>根元素被用来获取文档的默认根元素。</span>
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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>document</code> - a文件。
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</dd>
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</dl> </li>
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</ul> <a name="ElementIterator-javax.swing.text.Element-">
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<ul class="blockListLast">
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<li class="blockList"> <h4>ElementIterator</h4> <pre>public ElementIterator(<a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> root)</pre>
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<div class="block">
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创建一个新的ElementIterator。
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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>root</code> - 根元素。
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</dd>
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</dl> </li>
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</ul> </li>
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</ul>
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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="clone--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>clone</h4> <pre>public <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a> clone()</pre>
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<div class="block">
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克隆ElementIterator。
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</div>
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<dl>
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<dt>
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<span class="overrideSpecifyLabel">重写：</span>
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</dt>
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<dd>
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<code><a href="../../../java/lang/Object.html#clone--">clone</a></code>在
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<code><a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></code>
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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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一个克隆的ElementIterator对象。
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</dd>
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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="../../../java/lang/Cloneable.html" title="java.lang中的接口"><code>Cloneable</code></a></span>
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</dd>
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</dl> </li>
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</ul> <a name="first--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>first</h4> <pre>public <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> first()</pre>
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<div class="block">
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获取第一个元素
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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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元素
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</dd>
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</dl> </li>
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</ul> <a name="depth--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>depth</h4> <pre>public int depth()</pre>
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<div class="block">
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获取元素树的当前深度。
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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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深度。
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</dd>
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</dl> </li>
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</ul> <a name="current--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>current</h4> <pre>public <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> current()</pre>
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<div class="block">
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获取当前元素。
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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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元素在堆栈顶部或
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<code>null</code>如果根元素是
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<code>null</code>
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</dd>
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</dl> </li>
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</ul> <a name="next--">
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<!-- --> </a>
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<ul class="blockList">
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<li class="blockList"> <h4>next</h4> <pre>public <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> next()</pre>
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<div class="block">
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<span>获取下一个元素。</span>
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<span>用于定位下一个元素的策略是深度优先搜索。</span>
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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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下一个元素或
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<code>null</code>在列表的末尾。
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</dd>
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</dl> </li>
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</ul> <a name="previous--">
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<!-- --> </a>
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<ul class="blockListLast">
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<li class="blockList"> <h4>previous</h4> <pre>public <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> previous()</pre>
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<div class="block">
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<span>获取上一个元素。</span>
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<span>然而，如果当前元素是最后一个元素，或者当前元素为null，则返回null。</span>
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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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以前的
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<code>Element</code>如果可用
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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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