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<div class="header">
<div class="subTitle">
javax.swing.text
</div>
<h2 class="title" title="Class AbstractDocument">Class AbstractDocument</h2>
</div><div class="contentContainer">
<ul class="inheritance">
<li><a href="../../../java/lang/Object.html" title="class in java.lang">java.lang.Object</a></li>
<li>
<ul class="inheritance">
<li>javax.swing.text.AbstractDocument</li>
</ul> </li>
</ul>
<div class="description">
<ul class="blockList">
<li class="blockList">
<dl>
<dt>
All Implemented Interfaces:
</dt>
<dd>
<span><a href="../../../java/io/Serializable.html" title="java.io中的接口">Serializable</a> ， <a href="../../../javax/swing/text/Document.html" title="javax.swing.text中的接口">Document</a></span>
</dd>
</dl>
<dl>
<dt>
已知直接子类：
</dt>
<dd>
<span><a href="../../../javax/swing/text/DefaultStyledDocument.html" title="javax.swing.text中的类">DefaultStyledDocument</a> ， <a href="../../../javax/swing/text/PlainDocument.html" title="javax.swing.text中的类">PlainDocument</a></span>
</dd>
</dl>
<hr/> <br/> <pre>public abstract class <span class="typeNameLabel">AbstractDocument</span>
extends <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>
implements <a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a>, <a href="../../../java/io/Serializable.html" title="interface in java.io">Serializable</a></pre>
<div class="block">
<span>实现文档界面，作为实施各种文件的基础。</span>
<span>在这个级别上，政策很少，所以使用难度相应增加。</span>
<p> <span>该类实现了文档的锁定机制。</span> <span>它允许多个读者或一个作家，并且作者必须等待文档的所有观察者已经被通知之前的变化，然后再开始对文档的另一个突变。</span> <span>使用<code>render</code>方法获取并释放读锁。</span> <span>通过使文档变异的方法获取写锁定，并在方法调用期间保持写锁定。</span> <span>通知是在产生突变的线程上完成的，线程在通知期间具有对文档的完全读取访问权限，但是其他读者将被保留，直到通知完成。</span> <span>该通知是一个bean事件通知，直到所有收听者都被通知为止，它不允许任何进一步的突变。</span> </p>
<p> <span>任何从该类子类化并与从BasicTextUI导出的外观实现结合使用的模型可能会被异步地安全更新，因为如果文档的类型为AbstractDocument，则由BasicTextUI对所有对View层次结构的访问进行序列<code>AbstractDocument</code> 。</span> <span>锁定假定一个独立的线程只能从DocumentListener方法访问View层次结构，并且一次只有一个事件线程处于活动状态。</span> </p>
<p> <span>如果需要并发支持，还有以下附加的含义。</span> <span>任何DocumentListener实现和任何UndoListener实现的代码路径必须是线程安全的，如果尝试从死锁中安全，则不访问组件锁。</span> <span><code>repaint</code>和<code>revalidate</code>方法是安全的。</span> </p>
<p> <span>AbstractDocument在文档末尾建立隐含的断点。</span> <span>除此之外，您可以在最后一个字符之后放置插入符号。</span> <span>因此， <code>getLength</code>返回的内容比内容的长度少一个。</span> <span>如果您创建自己的内容，请确保并初始化它以增加一个字符。</span> <span>参考StringContent和GapContent的例子。</span> <span>另一个含义是，对隐含结束字符建模的元素将具有endOffset ==（getLength（）+ 1）。</span> <span>例如，在DefaultStyledDocument <code>getParagraphElement(getLength()).getEndOffset() == getLength() + 1</code> 。</span> </p>
<p> <span><strong>警告：</strong>此类的序列化对象与将来的Swing版本不兼容。</span> <span>当前的序列化支持适用于运行相同版本的Swing的应用程序之间的短期存储或RMI。</span> <span>从1.4开始，对所有JavaBeans的长期存储的支持已经添加到<code>java.beans</code>包中。</span> <span>请参阅<a href="../../../java/beans/XMLEncoder.html" title="java.beans中的类"><code>XMLEncoder</code></a> 。</span> </p>
</div> </li>
</ul>
</div>
<div class="summary">
<ul class="blockList">
<li class="blockList">
<!-- ======== NESTED CLASS SUMMARY ======== -->
<ul class="blockList">
<li class="blockList"><a name="nested.class.summary">
<!-- --> </a> <h3>Nested Class Summary</h3>
<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Nested Class Summary table, listing nested classes, and an explanation">
<caption>
<span>Nested Classes</span>
<span class="tabEnd"> </span>
</caption>
<tbody>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>class </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.AbstractElement.html" title="class in javax.swing.text">AbstractDocument.AbstractElement</a></span></code>
<div class="block">
实现元素的抽象部分。
</div> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static interface </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.AttributeContext.html" title="interface in javax.swing.text">AbstractDocument.AttributeContext</a></span></code>
<div class="block">
一个可用于允许MutableAttributeSet实现使用可插拔属性压缩技术的接口。
</div> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>class </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.BranchElement.html" title="class in javax.swing.text">AbstractDocument.BranchElement</a></span></code>
<div class="block">
实现一个包含其他元素的复合元素。
</div> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static interface </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.Content.html" title="interface in javax.swing.text">AbstractDocument.Content</a></span></code>
<div class="block">
用于描述可编辑的字符内容序列的界面。
</div> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>class </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.DefaultDocumentEvent.html" title="class in javax.swing.text">AbstractDocument.DefaultDocumentEvent</a></span></code>
<div class="block">
正在修改文档时存储文档更改。
</div> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static class </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.ElementEdit.html" title="class in javax.swing.text">AbstractDocument.ElementEdit</a></span></code>
<div class="block">
可以添加到文档事件中的ElementChange的实现。
</div> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>class </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.LeafElement.html" title="class in javax.swing.text">AbstractDocument.LeafElement</a></span></code>
<div class="block">
实现直接表示某种内容的元素。
</div> </td>
</tr>
</tbody>
</table> </li>
</ul>
<!-- =========== FIELD SUMMARY =========== -->
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<li class="blockList"><a name="field.summary">
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Field Summary table, listing fields, and an explanation">
<caption>
<span>Fields</span>
<span class="tabEnd"> </span>
</caption>
<tbody>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected static <a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#BAD_LOCATION">BAD_LOCATION</a></span></code>
<div class="block">
错误信息表示错误的位置。
</div> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#BidiElementName">BidiElementName</a></span></code>
<div class="block">
用于保持单向运行的元素的名称
</div> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#ContentElementName">ContentElementName</a></span></code>
<div class="block">
用于表示内容的元素的名称
</div> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#ElementNameAttribute">ElementNameAttribute</a></span></code>
<div class="block">
用于指定元素名称的属性的名称。
</div> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../javax/swing/event/EventListenerList.html" title="class in javax.swing.event">EventListenerList</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#listenerList">listenerList</a></span></code>
<div class="block">
文档的事件监听器列表。
</div> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#ParagraphElementName">ParagraphElementName</a></span></code>
<div class="block">
用于表示段落的元素的名称
</div> </td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#SectionElementName">SectionElementName</a></span></code>
<div class="block">
用于保存部分的元素名称（行/段落）。
</div> </td>
</tr>
</tbody>
</table>
<ul class="blockList">
<li class="blockList"><a name="fields.inherited.from.class.javax.swing.text.Document">
<!-- --> </a> <h3>Fields inherited from interface javax.swing.text.<a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></h3> <code><a href="../../../javax/swing/text/Document.html#StreamDescriptionProperty">StreamDescriptionProperty</a>, <a href="../../../javax/swing/text/Document.html#TitleProperty">TitleProperty</a></code></li>
</ul> </li>
</ul>
<!-- ======== CONSTRUCTOR SUMMARY ======== -->
<ul class="blockList">
<li class="blockList"><a name="constructor.summary">
<!-- --> </a> <h3>构造方法摘要</h3>
<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Constructor Summary table, listing constructors, and an explanation">
<caption>
<span>构造方法</span>
<span class="tabEnd"> </span>
</caption>
<tbody>
<tr>
<th class="colFirst" scope="col">Modifier</th>
<th class="colLast" scope="col">Constructor and Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#AbstractDocument-javax.swing.text.AbstractDocument.Content-">AbstractDocument</a></span>(<a href="../../../javax/swing/text/AbstractDocument.Content.html" title="interface in javax.swing.text">AbstractDocument.Content</a> data)</code>
<div class="block">
构造一个新的
<code>AbstractDocument</code> ，围绕一些指定的内容存储机制。
</div> </td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#AbstractDocument-javax.swing.text.AbstractDocument.Content-javax.swing.text.AbstractDocument.AttributeContext-">AbstractDocument</a></span>(<a href="../../../javax/swing/text/AbstractDocument.Content.html" title="interface in javax.swing.text">AbstractDocument.Content</a> data, <a href="../../../javax/swing/text/AbstractDocument.AttributeContext.html" title="interface in javax.swing.text">AbstractDocument.AttributeContext</a> context)</code>
<div class="block">
构造一个新的
<code>AbstractDocument</code> ，包裹一些指定的内容存储机制。
</div> </td>
</tr>
</tbody>
</table> </li>
</ul>
<!-- ========== METHOD SUMMARY =========== -->
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<li class="blockList"><a name="method.summary">
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<table border="0" cellpadding="3" cellspacing="0" class="memberSummary" summary="Method Summary table, listing methods, and an explanation">
<caption>
<span class="activeTableTab" id="t0"><span>所有方法</span><span class="tabEnd"> </span></span>
<span class="tableTab" id="t2"><span><a href="javascript:show(2);">接口方法</a></span><span class="tabEnd"> </span></span>
<span class="tableTab" id="t3"><span><a href="javascript:show(4);">抽象方法</a></span><span class="tabEnd"> </span></span>
<span class="tableTab" id="t4"><span><a href="javascript:show(8);">具体的方法</a></span><span class="tabEnd"> </span></span>
</caption>
<tbody>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor" id="i0">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#addDocumentListener-javax.swing.event.DocumentListener-">addDocumentListener</a></span>(<a href="../../../javax/swing/event/DocumentListener.html" title="interface in javax.swing.event">DocumentListener</a> listener)</code>
<div class="block">
添加文档侦听器以通知任何更改。
</div> </td>
</tr>
<tr class="rowColor" id="i1">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#addUndoableEditListener-javax.swing.event.UndoableEditListener-">addUndoableEditListener</a></span>(<a href="../../../javax/swing/event/UndoableEditListener.html" title="interface in javax.swing.event">UndoableEditListener</a> listener)</code>
<div class="block">
添加撤消侦听器以通知任何更改。
</div> </td>
</tr>
<tr class="altColor" id="i2">
<td class="colFirst"><code>protected <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#createBranchElement-javax.swing.text.Element-javax.swing.text.AttributeSet-">createBranchElement</a></span>(<a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> parent, <a href="../../../javax/swing/text/AttributeSet.html" title="interface in javax.swing.text">AttributeSet</a> a)</code>
<div class="block">
创建一个可以包含其他元素的文档分支元素。
</div> </td>
</tr>
<tr class="rowColor" id="i3">
<td class="colFirst"><code>protected <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#createLeafElement-javax.swing.text.Element-javax.swing.text.AttributeSet-int-int-">createLeafElement</a></span>(<a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> parent, <a href="../../../javax/swing/text/AttributeSet.html" title="interface in javax.swing.text">AttributeSet</a> a, int p0, int p1)</code>
<div class="block">
创建文档叶元素。
</div> </td>
</tr>
<tr class="altColor" id="i4">
<td class="colFirst"><code><a href="../../../javax/swing/text/Position.html" title="interface in javax.swing.text">Position</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#createPosition-int-">createPosition</a></span>(int offs)</code>
<div class="block">
返回在文档更改时跟踪更改的位置。
</div> </td>
</tr>
<tr class="rowColor" id="i5">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#dump-java.io.PrintStream-">dump</a></span>(<a href="../../../java/io/PrintStream.html" title="class in java.io">PrintStream</a> out)</code>
<div class="block">
提供诊断转储。
</div> </td>
</tr>
<tr class="altColor" id="i6">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#fireChangedUpdate-javax.swing.event.DocumentEvent-">fireChangedUpdate</a></span>(<a href="../../../javax/swing/event/DocumentEvent.html" title="interface in javax.swing.event">DocumentEvent</a> e)</code>
<div class="block">
通知所有在此事件类型上通知有兴趣的听众。
</div> </td>
</tr>
<tr class="rowColor" id="i7">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#fireInsertUpdate-javax.swing.event.DocumentEvent-">fireInsertUpdate</a></span>(<a href="../../../javax/swing/event/DocumentEvent.html" title="interface in javax.swing.event">DocumentEvent</a> e)</code>
<div class="block">
通知所有在此事件类型上通知有兴趣的听众。
</div> </td>
</tr>
<tr class="altColor" id="i8">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#fireRemoveUpdate-javax.swing.event.DocumentEvent-">fireRemoveUpdate</a></span>(<a href="../../../javax/swing/event/DocumentEvent.html" title="interface in javax.swing.event">DocumentEvent</a> e)</code>
<div class="block">
通知所有在此事件类型上通知有兴趣的听众。
</div> </td>
</tr>
<tr class="rowColor" id="i9">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#fireUndoableEditUpdate-javax.swing.event.UndoableEditEvent-">fireUndoableEditUpdate</a></span>(<a href="../../../javax/swing/event/UndoableEditEvent.html" title="class in javax.swing.event">UndoableEditEvent</a> e)</code>
<div class="block">
通知所有在此事件类型上通知有兴趣的听众。
</div> </td>
</tr>
<tr class="altColor" id="i10">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getAsynchronousLoadPriority--">getAsynchronousLoadPriority</a></span>()</code>
<div class="block">
获取异步加载优先级。
</div> </td>
</tr>
<tr class="rowColor" id="i11">
<td class="colFirst"><code>protected <a href="../../../javax/swing/text/AbstractDocument.AttributeContext.html" title="interface in javax.swing.text">AbstractDocument.AttributeContext</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getAttributeContext--">getAttributeContext</a></span>()</code>
<div class="block">
获取管理属性的上下文。
</div> </td>
</tr>
<tr class="altColor" id="i12">
<td class="colFirst"><code><a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getBidiRootElement--">getBidiRootElement</a></span>()</code>
<div class="block">
返回此文档的双向结构的根元素。
</div> </td>
</tr>
<tr class="rowColor" id="i13">
<td class="colFirst"><code>protected <a href="../../../javax/swing/text/AbstractDocument.Content.html" title="interface in javax.swing.text">AbstractDocument.Content</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getContent--">getContent</a></span>()</code>
<div class="block">
获取文档的内容。
</div> </td>
</tr>
<tr class="altColor" id="i14">
<td class="colFirst"><code>protected <a href="../../../java/lang/Thread.html" title="class in java.lang">Thread</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getCurrentWriter--">getCurrentWriter</a></span>()</code>
<div class="block">
获取当前的书写线程，如果有的话。
</div> </td>
</tr>
<tr class="rowColor" id="i15">
<td class="colFirst"><code>abstract <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getDefaultRootElement--">getDefaultRootElement</a></span>()</code>
<div class="block">
返回视图应该基于的根元素，除非提供了用于将视图分配给元素结构的其他机制。
</div> </td>
</tr>
<tr class="altColor" id="i16">
<td class="colFirst"><code><a href="../../../javax/swing/text/DocumentFilter.html" title="class in javax.swing.text">DocumentFilter</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getDocumentFilter--">getDocumentFilter</a></span>()</code>
<div class="block">
返回
<code>DocumentFilter</code>插入/删除过滤的DocumentFilter。
</div> </td>
</tr>
<tr class="rowColor" id="i17">
<td class="colFirst"><code><a href="../../../javax/swing/event/DocumentListener.html" title="interface in javax.swing.event">DocumentListener</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getDocumentListeners--">getDocumentListeners</a></span>()</code>
<div class="block">
返回在此文档上注册的所有文档监听器的数组。
</div> </td>
</tr>
<tr class="altColor" id="i18">
<td class="colFirst"><code><a href="../../../java/util/Dictionary.html" title="class in java.util">Dictionary</a>&lt;<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>,<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getDocumentProperties--">getDocumentProperties</a></span>()</code>
<div class="block">
支持管理一组属性。
</div> </td>
</tr>
<tr class="rowColor" id="i19">
<td class="colFirst"><code><a href="../../../javax/swing/text/Position.html" title="interface in javax.swing.text">Position</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getEndPosition--">getEndPosition</a></span>()</code>
<div class="block">
返回表示文档结尾的位置。
</div> </td>
</tr>
<tr class="altColor" id="i20">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getLength--">getLength</a></span>()</code>
<div class="block">
返回数据的长度。
</div> </td>
</tr>
<tr class="rowColor" id="i21">
<td class="colFirst"><code>&lt;T extends <a href="../../../java/util/EventListener.html" title="interface in java.util">EventListener</a>&gt;<br/>T[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getListeners-java.lang.Class-">getListeners</a></span>(<a href="../../../java/lang/Class.html" title="class in java.lang">类</a>&lt;T&gt; listenerType)</code>
<div class="block">
返回
<code><em>Foo</em>Listener</code>在此文档中注册为
<code><em>Foo</em>Listener</code>的所有对象的数组。
</div> </td>
</tr>
<tr class="altColor" id="i22">
<td class="colFirst"><code>abstract <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getParagraphElement-int-">getParagraphElement</a></span>(int pos)</code>
<div class="block">
获取包含给定位置的段落元素。
</div> </td>
</tr>
<tr class="rowColor" id="i23">
<td class="colFirst"><code><a href="../../../java/lang/Object.html" title="class in java.lang">Object</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getProperty-java.lang.Object-">getProperty</a></span>(<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a> key)</code>
<div class="block">
查找属性值的方便方法。
</div> </td>
</tr>
<tr class="altColor" id="i24">
<td class="colFirst"><code><a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getRootElements--">getRootElements</a></span>()</code>
<div class="block">
获取定义的所有根元素。
</div> </td>
</tr>
<tr class="rowColor" id="i25">
<td class="colFirst"><code><a href="../../../javax/swing/text/Position.html" title="interface in javax.swing.text">Position</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getStartPosition--">getStartPosition</a></span>()</code>
<div class="block">
返回表示文档开头的位置。
</div> </td>
</tr>
<tr class="altColor" id="i26">
<td class="colFirst"><code><a href="../../../java/lang/String.html" title="class in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getText-int-int-">getText</a></span>(int offset, int length)</code>
<div class="block">
从文档中获取文本序列。
</div> </td>
</tr>
<tr class="rowColor" id="i27">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getText-int-int-javax.swing.text.Segment-">getText</a></span>(int offset, int length, <a href="../../../javax/swing/text/Segment.html" title="class in javax.swing.text">Segment</a> txt)</code>
<div class="block">
获取文档给定部分中包含的文本。
</div> </td>
</tr>
<tr class="altColor" id="i28">
<td class="colFirst"><code><a href="../../../javax/swing/event/UndoableEditListener.html" title="interface in javax.swing.event">UndoableEditListener</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#getUndoableEditListeners--">getUndoableEditListeners</a></span>()</code>
<div class="block">
返回在此文档中注册的所有可撤销编辑监听器的数组。
</div> </td>
</tr>
<tr class="rowColor" id="i29">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#insertString-int-java.lang.String-javax.swing.text.AttributeSet-">insertString</a></span>(int offs, <a href="../../../java/lang/String.html" title="class in java.lang">String</a> str, <a href="../../../javax/swing/text/AttributeSet.html" title="interface in javax.swing.text">AttributeSet</a> a)</code>
<div class="block">
在文档中插入一些内容。
</div> </td>
</tr>
<tr class="altColor" id="i30">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#insertUpdate-javax.swing.text.AbstractDocument.DefaultDocumentEvent-javax.swing.text.AttributeSet-">insertUpdate</a></span>(<a href="../../../javax/swing/text/AbstractDocument.DefaultDocumentEvent.html" title="class in javax.swing.text">AbstractDocument.DefaultDocumentEvent</a> chng, <a href="../../../javax/swing/text/AttributeSet.html" title="interface in javax.swing.text">AttributeSet</a> attr)</code>
<div class="block">
更新由于文本插入而导致的文档结构。
</div> </td>
</tr>
<tr class="rowColor" id="i31">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#postRemoveUpdate-javax.swing.text.AbstractDocument.DefaultDocumentEvent-">postRemoveUpdate</a></span>(<a href="../../../javax/swing/text/AbstractDocument.DefaultDocumentEvent.html" title="class in javax.swing.text">AbstractDocument.DefaultDocumentEvent</a> chng)</code>
<div class="block">
由于删除文字而更新任何文档结构。
</div> </td>
</tr>
<tr class="altColor" id="i32">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#putProperty-java.lang.Object-java.lang.Object-">putProperty</a></span>(<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a> key, <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a> value)</code>
<div class="block">
用于存储属性值的便利方法。
</div> </td>
</tr>
<tr class="rowColor" id="i33">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#readLock--">readLock</a></span>()</code>
<div class="block">
获取一个锁，从文档开始读取一些状态。
</div> </td>
</tr>
<tr class="altColor" id="i34">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#readUnlock--">readUnlock</a></span>()</code>
<div class="block">
读取解锁
</div> </td>
</tr>
<tr class="rowColor" id="i35">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#remove-int-int-">remove</a></span>(int offs, int len)</code>
<div class="block">
从文档中删除一些内容。
</div> </td>
</tr>
<tr class="altColor" id="i36">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#removeDocumentListener-javax.swing.event.DocumentListener-">removeDocumentListener</a></span>(<a href="../../../javax/swing/event/DocumentListener.html" title="interface in javax.swing.event">DocumentListener</a> listener)</code>
<div class="block">
删除文档监听器。
</div> </td>
</tr>
<tr class="rowColor" id="i37">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#removeUndoableEditListener-javax.swing.event.UndoableEditListener-">removeUndoableEditListener</a></span>(<a href="../../../javax/swing/event/UndoableEditListener.html" title="interface in javax.swing.event">UndoableEditListener</a> listener)</code>
<div class="block">
删除撤消侦听器。
</div> </td>
</tr>
<tr class="altColor" id="i38">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#removeUpdate-javax.swing.text.AbstractDocument.DefaultDocumentEvent-">removeUpdate</a></span>(<a href="../../../javax/swing/text/AbstractDocument.DefaultDocumentEvent.html" title="class in javax.swing.text">AbstractDocument.DefaultDocumentEvent</a> chng)</code>
<div class="block">
由于删除文字而更新任何文档结构。
</div> </td>
</tr>
<tr class="rowColor" id="i39">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#render-java.lang.Runnable-">render</a></span>(<a href="../../../java/lang/Runnable.html" title="interface in java.lang">Runnable</a> r)</code>
<div class="block">
如果模型支持异步更新，则可以在存在货币的情况下安全地呈现模型。
</div> </td>
</tr>
<tr class="altColor" id="i40">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#replace-int-int-java.lang.String-javax.swing.text.AttributeSet-">replace</a></span>(int offset, int length, <a href="../../../java/lang/String.html" title="class in java.lang">String</a> text, <a href="../../../javax/swing/text/AttributeSet.html" title="interface in javax.swing.text">AttributeSet</a> attrs)</code>
<div class="block">
将文本区域从
<code>offset</code>删除为
<code>offset + length</code> ，并将其替换为
<code>text</code> 。
</div> </td>
</tr>
<tr class="rowColor" id="i41">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#setAsynchronousLoadPriority-int-">setAsynchronousLoadPriority</a></span>(int p)</code>
<div class="block">
设置异步加载优先级。
</div> </td>
</tr>
<tr class="altColor" id="i42">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#setDocumentFilter-javax.swing.text.DocumentFilter-">setDocumentFilter</a></span>(<a href="../../../javax/swing/text/DocumentFilter.html" title="class in javax.swing.text">DocumentFilter</a> filter)</code>
<div class="block">
设置
<code>DocumentFilter</code> 。
</div> </td>
</tr>
<tr class="rowColor" id="i43">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#setDocumentProperties-java.util.Dictionary-">setDocumentProperties</a></span>(<a href="../../../java/util/Dictionary.html" title="class in java.util">Dictionary</a>&lt;<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>,<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>&gt; x)</code>
<div class="block">
替换此文档的文档属性字典。
</div> </td>
</tr>
<tr class="altColor" id="i44">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#writeLock--">writeLock</a></span>()</code>
<div class="block">
获取一个锁，开始变更此锁保护的文档。
</div> </td>
</tr>
<tr class="rowColor" id="i45">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/AbstractDocument.html#writeUnlock--">writeUnlock</a></span>()</code>
<div class="block">
释放先前通过
<code>writeLock</code>获得的写锁定。
</div> </td>
</tr>
</tbody>
</table>
<ul class="blockList">
<li class="blockList"><a name="methods.inherited.from.class.java.lang.Object">
<!-- --> </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#clone--">clone</a>, <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>
</ul> </li>
</ul> </li>
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</div>
<div class="details">
<ul class="blockList">
<li class="blockList">
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<ul class="blockList">
<li class="blockList"><a name="field.detail">
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<ul class="blockList">
<li class="blockList"> <h4>listenerList</h4> <pre>protected <a href="../../../javax/swing/event/EventListenerList.html" title="class in javax.swing.event">EventListenerList</a> listenerList</pre>
<div class="block">
文档的事件监听器列表。
</div> </li>
</ul> <a name="BAD_LOCATION">
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<ul class="blockList">
<li class="blockList"> <h4>BAD_LOCATION</h4> <pre>protected static final <a href="../../../java/lang/String.html" title="class in java.lang">String</a> BAD_LOCATION</pre>
<div class="block">
错误信息表示错误的位置。
</div>
<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../constant-values.html#javax.swing.text.AbstractDocument.BAD_LOCATION">Constant Field Values</a>
</dd>
</dl> </li>
</ul> <a name="ParagraphElementName">
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<ul class="blockList">
<li class="blockList"> <h4>ParagraphElementName</h4> <pre>public static final <a href="../../../java/lang/String.html" title="class in java.lang">String</a> ParagraphElementName</pre>
<div class="block">
用于表示段落的元素的名称
</div>
<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../constant-values.html#javax.swing.text.AbstractDocument.ParagraphElementName">Constant Field Values</a>
</dd>
</dl> </li>
</ul> <a name="ContentElementName">
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<ul class="blockList">
<li class="blockList"> <h4>ContentElementName</h4> <pre>public static final <a href="../../../java/lang/String.html" title="class in java.lang">String</a> ContentElementName</pre>
<div class="block">
用于表示内容的元素的名称
</div>
<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../constant-values.html#javax.swing.text.AbstractDocument.ContentElementName">Constant Field Values</a>
</dd>
</dl> </li>
</ul> <a name="SectionElementName">
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<ul class="blockList">
<li class="blockList"> <h4>SectionElementName</h4> <pre>public static final <a href="../../../java/lang/String.html" title="class in java.lang">String</a> SectionElementName</pre>
<div class="block">
用于保存部分的元素名称（行/段落）。
</div>
<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../constant-values.html#javax.swing.text.AbstractDocument.SectionElementName">Constant Field Values</a>
</dd>
</dl> </li>
</ul> <a name="BidiElementName">
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<ul class="blockList">
<li class="blockList"> <h4>BidiElementName</h4> <pre>public static final <a href="../../../java/lang/String.html" title="class in java.lang">String</a> BidiElementName</pre>
<div class="block">
用于保持单向运行的元素的名称
</div>
<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../constant-values.html#javax.swing.text.AbstractDocument.BidiElementName">Constant Field Values</a>
</dd>
</dl> </li>
</ul> <a name="ElementNameAttribute">
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<ul class="blockListLast">
<li class="blockList"> <h4>ElementNameAttribute</h4> <pre>public static final <a href="../../../java/lang/String.html" title="class in java.lang">String</a> ElementNameAttribute</pre>
<div class="block">
用于指定元素名称的属性的名称。
</div>
<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../constant-values.html#javax.swing.text.AbstractDocument.ElementNameAttribute">Constant Field Values</a>
</dd>
</dl> </li>
</ul> </li>
</ul>
<!-- ========= CONSTRUCTOR DETAIL ======== -->
<ul class="blockList">
<li class="blockList"><a name="constructor.detail">
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<ul class="blockList">
<li class="blockList"> <h4>AbstractDocument</h4> <pre>protected AbstractDocument(<a href="../../../javax/swing/text/AbstractDocument.Content.html" title="interface in javax.swing.text">AbstractDocument.Content</a> data)</pre>
<div class="block">
构造一个新的
<code>AbstractDocument</code> ，围绕一些指定的内容存储机制。
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>data</code> - 内容
</dd>
</dl> </li>
</ul> <a name="AbstractDocument-javax.swing.text.AbstractDocument.Content-javax.swing.text.AbstractDocument.AttributeContext-">
<!-- --> </a>
<ul class="blockListLast">
<li class="blockList"> <h4>AbstractDocument</h4> <pre>protected AbstractDocument(<a href="../../../javax/swing/text/AbstractDocument.Content.html" title="interface in javax.swing.text">AbstractDocument.Content</a> data,
<a href="../../../javax/swing/text/AbstractDocument.AttributeContext.html" title="interface in javax.swing.text">AbstractDocument.AttributeContext</a> context)</pre>
<div class="block">
构造一个新的
<code>AbstractDocument</code> ，包裹一些指定的内容存储机制。
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>data</code> - 内容
</dd>
<dd>
<code>context</code> - 属性上下文
</dd>
</dl> </li>
</ul> </li>
</ul>
<!-- ============ METHOD DETAIL ========== -->
<ul class="blockList">
<li class="blockList"><a name="method.detail">
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<ul class="blockList">
<li class="blockList"> <h4>getDocumentProperties</h4> <pre>public <a href="../../../java/util/Dictionary.html" title="class in java.util">Dictionary</a>&lt;<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>,<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>&gt; getDocumentProperties()</pre>
<div class="block">
<span>支持管理一组属性。</span>
<span>来电者可以使用<code>documentProperties</code>字典对文档范围的属性进行注释。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
一个非
<code>null</code>
<code>Dictionary</code>
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#setDocumentProperties-java.util.Dictionary-"><code>setDocumentProperties(java.util.Dictionary&lt;java.lang.Object, java.lang.Object&gt;)</code></a>
</dd>
</dl> </li>
</ul> <a name="setDocumentProperties-java.util.Dictionary-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>setDocumentProperties</h4> <pre>public void setDocumentProperties(<a href="../../../java/util/Dictionary.html" title="class in java.util">Dictionary</a>&lt;<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>,<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a>&gt; x)</pre>
<div class="block">
替换此文档的文档属性字典。
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>x</code> - 新词典
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#getDocumentProperties--"><code>getDocumentProperties()</code></a>
</dd>
</dl> </li>
</ul> <a name="fireInsertUpdate-javax.swing.event.DocumentEvent-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>fireInsertUpdate</h4> <pre>protected void fireInsertUpdate(<a href="../../../javax/swing/event/DocumentEvent.html" title="interface in javax.swing.event">DocumentEvent</a> e)</pre>
<div class="block">
<span>通知所有在此事件类型上通知有兴趣的听众。</span>
<span>事件实例使用传递给fire方法的参数进行懒惰创建。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>e</code> - 事件
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<span><a href="../../../javax/swing/event/EventListenerList.html" title="javax.swing.event中的类"><code>EventListenerList</code></a></span>
</dd>
</dl> </li>
</ul> <a name="fireChangedUpdate-javax.swing.event.DocumentEvent-">
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<ul class="blockList">
<li class="blockList"> <h4>fireChangedUpdate</h4> <pre>protected void fireChangedUpdate(<a href="../../../javax/swing/event/DocumentEvent.html" title="interface in javax.swing.event">DocumentEvent</a> e)</pre>
<div class="block">
<span>通知所有在此事件类型上通知有兴趣的听众。</span>
<span>事件实例使用传递给fire方法的参数进行懒惰创建。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>e</code> - 事件
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<span><a href="../../../javax/swing/event/EventListenerList.html" title="javax.swing.event中的类"><code>EventListenerList</code></a></span>
</dd>
</dl> </li>
</ul> <a name="fireRemoveUpdate-javax.swing.event.DocumentEvent-">
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<ul class="blockList">
<li class="blockList"> <h4>fireRemoveUpdate</h4> <pre>protected void fireRemoveUpdate(<a href="../../../javax/swing/event/DocumentEvent.html" title="interface in javax.swing.event">DocumentEvent</a> e)</pre>
<div class="block">
<span>通知所有在此事件类型上通知有兴趣的听众。</span>
<span>事件实例使用传递给fire方法的参数进行懒惰创建。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>e</code> - 事件
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<span><a href="../../../javax/swing/event/EventListenerList.html" title="javax.swing.event中的类"><code>EventListenerList</code></a></span>
</dd>
</dl> </li>
</ul> <a name="fireUndoableEditUpdate-javax.swing.event.UndoableEditEvent-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>fireUndoableEditUpdate</h4> <pre>protected void fireUndoableEditUpdate(<a href="../../../javax/swing/event/UndoableEditEvent.html" title="class in javax.swing.event">UndoableEditEvent</a> e)</pre>
<div class="block">
<span>通知所有在此事件类型上通知有兴趣的听众。</span>
<span>事件实例使用传递给fire方法的参数进行懒惰创建。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>e</code> - 事件
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<span><a href="../../../javax/swing/event/EventListenerList.html" title="javax.swing.event中的类"><code>EventListenerList</code></a></span>
</dd>
</dl> </li>
</ul> <a name="getListeners-java.lang.Class-">
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<ul class="blockList">
<li class="blockList"> <h4>getListeners</h4> <pre>public &lt;T extends <a href="../../../java/util/EventListener.html" title="interface in java.util">EventListener</a>&gt; T[] getListeners(<a href="../../../java/lang/Class.html" title="class in java.lang">类</a>&lt;T&gt; listenerType)</pre>
<div class="block">
<span>返回此文档上当前注册为<code><em>Foo</em>Listener</code>的所有对象的数组。</span>
<span><code><em>Foo</em>Listener</code>使用<code>add<em>Foo</em>Listener</code> 。</span>
<p> <span>您可以使用类文字指定<code>listenerType</code>参数，例如<code><em>Foo</em>Listener.class</code> 。</span> <span>例如，您可以使用以下代码查询文档<code>d</code>的文档侦听器：</span> </p>
<pre> <span>DocumentListener[] mls = (DocumentListener[])(d.getListeners(DocumentListener.class));</span> </pre>
<span>如果没有这样的侦听器存在，这个方法返回一个空数组。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<span><code>listenerType</code> - 所请求的听众的类型;</span>
<span>此参数应指定从<code>java.util.EventListener</code>下降的<code>java.util.EventListener</code></span>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
在此组件上注册为
<code><em>Foo</em>Listener</code>的所有对象的数组，如果未添加此类侦听器，则为空数组
</dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../java/lang/ClassCastException.html" title="class in java.lang">ClassCastException</a></code> - 如果
<code>listenerType</code>没有指定实现java.util.EventListener的类或
<code>java.util.EventListener</code>
</dd>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
1.3
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#getDocumentListeners--"><code>getDocumentListeners()</code></a> ，
<a href="../../../javax/swing/text/AbstractDocument.html#getUndoableEditListeners--"><code>getUndoableEditListeners()</code></a>
</dd>
</dl> </li>
</ul> <a name="getAsynchronousLoadPriority--">
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<ul class="blockList">
<li class="blockList"> <h4>getAsynchronousLoadPriority</h4> <pre>public int getAsynchronousLoadPriority()</pre>
<div class="block">
<span>获取异步加载优先级。</span>
<span>如果小于零，则不应异步加载文档。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
异步加载优先级，或
<code>-1</code>如果文档不应该异步加载
</dd>
</dl> </li>
</ul> <a name="setAsynchronousLoadPriority-int-">
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<ul class="blockList">
<li class="blockList"> <h4>setAsynchronousLoadPriority</h4> <pre>public void setAsynchronousLoadPriority(int p)</pre>
<div class="block">
设置异步加载优先级。
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<span><code>p</code> - 新的异步加载优先级;</span>
<span>小于零的值表示不应该异步加载文档</span>
</dd>
</dl> </li>
</ul> <a name="setDocumentFilter-javax.swing.text.DocumentFilter-">
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<ul class="blockList">
<li class="blockList"> <h4>setDocumentFilter</h4> <pre>public void setDocumentFilter(<a href="../../../javax/swing/text/DocumentFilter.html" title="class in javax.swing.text">DocumentFilter</a> filter)</pre>
<div class="block">
<span>设置<code>DocumentFilter</code> 。</span>
<span><code>DocumentFilter</code>通过了<code>insert</code>和<code>remove</code>以有条件地允许插入/删除文本。</span>
<span><code>null</code>值表示不会发生过滤。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>filter</code> -在
<code>DocumentFilter</code>用来约束文本
</dd>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
1.4
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#getDocumentFilter--"><code>getDocumentFilter()</code></a>
</dd>
</dl> </li>
</ul> <a name="getDocumentFilter--">
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<ul class="blockList">
<li class="blockList"> <h4>getDocumentFilter</h4> <pre>public <a href="../../../javax/swing/text/DocumentFilter.html" title="class in javax.swing.text">DocumentFilter</a> getDocumentFilter()</pre>
<div class="block">
<span>返回<code>DocumentFilter</code>插入/删除过滤的DocumentFilter。</span>
<span>A <code>null</code>返回值意味着不会发生过滤。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
DocumentFilter
</dd>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
1.4
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#setDocumentFilter-javax.swing.text.DocumentFilter-"><code>setDocumentFilter(javax.swing.text.DocumentFilter)</code></a>
</dd>
</dl> </li>
</ul> <a name="render-java.lang.Runnable-">
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<ul class="blockList">
<li class="blockList"> <h4>render</h4> <pre>public void render(<a href="../../../java/lang/Runnable.html" title="interface in java.lang">Runnable</a> r)</pre>
<div class="block">
<span>如果模型支持异步更新，则可以在存在货币的情况下安全地呈现模型。</span>
<span>给定的可运行程序将以允许其在执行runnable时不改变的情况下安全地读取模型的方式执行。</span>
<span>runnable本身可能<em>不会发生</em>任何突变。</span>
<p> <span>这是为了在runnable执行期间获取读锁。</span> <span>同时执行多个可执行文件，并且所有写入程序都将被阻止，同时存在活动的渲染运行时间。</span> <span>如果runnable抛出异常，它的锁将被安全地释放。</span> <span>没有一个永远不会退出的可运行的保护，这将有效地使文档被锁定为一生。</span> </p>
<p> <span>如果给定的runnable尝试在此实现中发生任何突变，则会发生死锁。</span> <span>没有跟踪单个渲染线程来检测这种情况，但是一个子类可能会产生跟踪它们并引发错误的开销。</span> </p>
<p> <span>这种方法是线程安全的，尽管大多数Swing方法都不是。</span> <span>请参阅<a href="http://docs.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency in Swing</a>了解更多信息。</span> </p>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#render-java.lang.Runnable-">render</a></code>在界面
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>r</code> - 执行渲染器
</dd>
</dl> </li>
</ul> <a name="getLength--">
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<ul class="blockList">
<li class="blockList"> <h4>getLength</h4> <pre>public int getLength()</pre>
<div class="block">
<span>返回数据的长度。</span>
<span>这是表示用户数据的内容的字符数。</span>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#getLength--">getLength</a></code>在接口
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
长度&gt; = 0
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/Document.html#getLength--"><code>Document.getLength()</code></a>
</dd>
</dl> </li>
</ul> <a name="addDocumentListener-javax.swing.event.DocumentListener-">
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<ul class="blockList">
<li class="blockList"> <h4>addDocumentListener</h4> <pre>public void addDocumentListener(<a href="../../../javax/swing/event/DocumentListener.html" title="interface in javax.swing.event">DocumentListener</a> listener)</pre>
<div class="block">
添加文档侦听器以通知任何更改。
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#addDocumentListener-javax.swing.event.DocumentListener-">addDocumentListener</a></code>在界面
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>listener</code> -
<code>DocumentListener</code>加
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/Document.html#addDocumentListener-javax.swing.event.DocumentListener-"><code>Document.addDocumentListener(javax.swing.event.DocumentListener)</code></a>
</dd>
</dl> </li>
</ul> <a name="removeDocumentListener-javax.swing.event.DocumentListener-">
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<ul class="blockList">
<li class="blockList"> <h4>removeDocumentListener</h4> <pre>public void removeDocumentListener(<a href="../../../javax/swing/event/DocumentListener.html" title="interface in javax.swing.event">DocumentListener</a> listener)</pre>
<div class="block">
删除文档监听器。
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#removeDocumentListener-javax.swing.event.DocumentListener-">removeDocumentListener</a></code>在界面
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>listener</code> - 要删除的
<code>DocumentListener</code>
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/Document.html#removeDocumentListener-javax.swing.event.DocumentListener-"><code>Document.removeDocumentListener(javax.swing.event.DocumentListener)</code></a>
</dd>
</dl> </li>
</ul> <a name="getDocumentListeners--">
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<ul class="blockList">
<li class="blockList"> <h4>getDocumentListeners</h4> <pre>public <a href="../../../javax/swing/event/DocumentListener.html" title="interface in javax.swing.event">DocumentListener</a>[] getDocumentListeners()</pre>
<div class="block">
返回在此文档上注册的所有文档监听器的数组。
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
所有这些文件的
<code>DocumentListener</code> s或一个空数组，如果没有文件监听器当前注册
</dd>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
1.4
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#addDocumentListener-javax.swing.event.DocumentListener-"><code>addDocumentListener(javax.swing.event.DocumentListener)</code></a> ，
<a href="../../../javax/swing/text/AbstractDocument.html#removeDocumentListener-javax.swing.event.DocumentListener-"><code>removeDocumentListener(javax.swing.event.DocumentListener)</code></a>
</dd>
</dl> </li>
</ul> <a name="addUndoableEditListener-javax.swing.event.UndoableEditListener-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>addUndoableEditListener</h4> <pre>public void addUndoableEditListener(<a href="../../../javax/swing/event/UndoableEditListener.html" title="interface in javax.swing.event">UndoableEditListener</a> listener)</pre>
<div class="block">
<span>添加撤消侦听器以通知任何更改。</span>
<span>撤消在执行/恢复操作<code>UndoableEdit</code>将使适当的DocumentEvent被解雇，保持期（县）同步与模型。</span>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#addUndoableEditListener-javax.swing.event.UndoableEditListener-">addUndoableEditListener</a></code>在界面
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>listener</code> - 要添加的
<code>UndoableEditListener</code>
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/Document.html#addUndoableEditListener-javax.swing.event.UndoableEditListener-"><code>Document.addUndoableEditListener(javax.swing.event.UndoableEditListener)</code></a>
</dd>
</dl> </li>
</ul> <a name="removeUndoableEditListener-javax.swing.event.UndoableEditListener-">
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<ul class="blockList">
<li class="blockList"> <h4>removeUndoableEditListener</h4> <pre>public void removeUndoableEditListener(<a href="../../../javax/swing/event/UndoableEditListener.html" title="interface in javax.swing.event">UndoableEditListener</a> listener)</pre>
<div class="block">
删除撤消侦听器。
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#removeUndoableEditListener-javax.swing.event.UndoableEditListener-">removeUndoableEditListener</a></code>在界面
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>listener</code> - 要删除的
<code>UndoableEditListener</code>
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/Document.html#removeDocumentListener-javax.swing.event.DocumentListener-"><code>Document.removeDocumentListener(javax.swing.event.DocumentListener)</code></a>
</dd>
</dl> </li>
</ul> <a name="getUndoableEditListeners--">
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<ul class="blockList">
<li class="blockList"> <h4>getUndoableEditListeners</h4> <pre>public <a href="../../../javax/swing/event/UndoableEditListener.html" title="interface in javax.swing.event">UndoableEditListener</a>[] getUndoableEditListeners()</pre>
<div class="block">
返回在此文档中注册的所有可撤销编辑监听器的数组。
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
所有这些文件的
<code>UndoableEditListener</code> s或一个空数组，如果没有可撤销的编辑监听器当前注册
</dd>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
1.4
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#addUndoableEditListener-javax.swing.event.UndoableEditListener-"><code>addUndoableEditListener(javax.swing.event.UndoableEditListener)</code></a> ，
<a href="../../../javax/swing/text/AbstractDocument.html#removeUndoableEditListener-javax.swing.event.UndoableEditListener-"><code>removeUndoableEditListener(javax.swing.event.UndoableEditListener)</code></a>
</dd>
</dl> </li>
</ul> <a name="getProperty-java.lang.Object-">
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<ul class="blockList">
<li class="blockList"> <h4>getProperty</h4> <pre>public final <a href="../../../java/lang/Object.html" title="class in java.lang">Object</a> getProperty(<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a> key)</pre>
<div class="block">
<span>查找属性值的方便方法。</span>
<span>相当于：</span>
<pre> <span>getDocumentProperties().get(key);</span> </pre>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#getProperty-java.lang.Object-">getProperty</a></code>在接口
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>key</code> - 非
<code>null</code>属性键
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
该属性的值或
<code>null</code>
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#getDocumentProperties--"><code>getDocumentProperties()</code></a>
</dd>
</dl> </li>
</ul> <a name="putProperty-java.lang.Object-java.lang.Object-">
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<ul class="blockList">
<li class="blockList"> <h4>putProperty</h4> <pre>public final void putProperty(<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a> key,
<a href="../../../java/lang/Object.html" title="class in java.lang">Object</a> value)</pre>
<div class="block">
<span>用于存储属性值的便利方法。</span>
<span>相当于：</span>
<pre> <span>getDocumentProperties().put(key, value);</span> </pre>
<span>如果<code>value</code>是<code>null</code>这个方法将删除该属性。</span>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#putProperty-java.lang.Object-java.lang.Object-">putProperty</a></code>在界面
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>key</code> - 非
<code>null</code>键
</dd>
<dd>
<code>value</code> - 物业价值
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#getDocumentProperties--"><code>getDocumentProperties()</code></a>
</dd>
</dl> </li>
</ul> <a name="remove-int-int-">
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<ul class="blockList">
<li class="blockList"> <h4>remove</h4> <pre>public void remove(int offs,
int len)
throws <a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></pre>
<div class="block">
<span>从文档中删除一些内容。</span>
<span>删除内容会导致在实际发生变化时保持写入锁定。</span>
<span>观察员被通知调用此方法的线程上的更改。</span>
<p> <span>这种方法是线程安全的，尽管大多数Swing方法都不是。</span> <span>请参阅<a href="http://docs.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency in Swing</a>了解更多信息。</span> </p>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#remove-int-int-">remove</a></code>在界面
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>offs</code> - 起始偏移量&gt; = 0
</dd>
<dd>
<code>len</code> - 要删除的字符数&gt; = 0
</dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></code> - 给定的删除位置不是文档中的有效位置
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/Document.html#remove-int-int-"><code>Document.remove(int, int)</code></a>
</dd>
</dl> </li>
</ul> <a name="replace-int-int-java.lang.String-javax.swing.text.AttributeSet-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>replace</h4> <pre>public void replace(int offset,
int length,
<a href="../../../java/lang/String.html" title="class in java.lang">String</a> text,
<a href="../../../javax/swing/text/AttributeSet.html" title="interface in javax.swing.text">AttributeSet</a> attrs)
throws <a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></pre>
<div class="block">
<span>将文本区域从<code>offset</code>删除为<code>offset + length</code> ，并将其替换为<code>text</code> 。</span>
<span>实现如何实现，一些实现可以将其视为两个不同的操作：一个删除后跟一个插入，另一些可以将替换视为一个原子操作。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>offset</code> - 子元素的索引
</dd>
<dd>
<code>length</code> - 要删除的文本长度，可能为0表示不删除任何内容
</dd>
<dd>
<code>text</code> - 要插入的文本，
<code>null</code>表示没有要插入的文本
</dd>
<dd>
<code>attrs</code> - 指示插入文本的属性的AttributeSet，
<code>null</code>是合法的，通常被视为一个空的属性集，但精确的解释留给子类
</dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></code> - 给定的位置不是文档中的有效位置
</dd>
<dt>
<span class="simpleTagLabel">从以下版本开始：</span>
</dt>
<dd>
1.4
</dd>
</dl> </li>
</ul> <a name="insertString-int-java.lang.String-javax.swing.text.AttributeSet-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>insertString</h4> <pre>public void insertString(int offs,
<a href="../../../java/lang/String.html" title="class in java.lang">String</a> str,
<a href="../../../javax/swing/text/AttributeSet.html" title="interface in javax.swing.text">AttributeSet</a> a)
throws <a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></pre>
<div class="block">
<span>在文档中插入一些内容。</span>
<span>插入内容会导致在实际更改发生时保留写入锁定，然后通知抓取写入锁定的线程上的观察者。</span>
<p> <span>这种方法是线程安全的，尽管大多数Swing方法都不是。</span> <span>请参阅<a href="http://docs.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency in Swing</a>了解更多信息。</span> </p>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#insertString-int-java.lang.String-javax.swing.text.AttributeSet-">insertString</a></code>在接口
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>offs</code> - 起始偏移量&gt; = 0
</dd>
<dd>
<span><code>str</code> - 要插入的字符串;</span>
<span>对空/空字符串不做任何事情</span>
</dd>
<dd>
<code>a</code> - 插入内容的属性
</dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></code> - 给定的插入位置不是文档中的有效位置
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/Document.html#insertString-int-java.lang.String-javax.swing.text.AttributeSet-"><code>Document.insertString(int, java.lang.String, javax.swing.text.AttributeSet)</code></a>
</dd>
</dl> </li>
</ul> <a name="getText-int-int-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>getText</h4> <pre>public <a href="../../../java/lang/String.html" title="class in java.lang">String</a> getText(int offset,
int length)
throws <a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></pre>
<div class="block">
从文档中获取文本序列。
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#getText-int-int-">getText</a></code>在接口
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>offset</code> - 起始偏移量&gt; = 0
</dd>
<dd>
<code>length</code> - 要检索的字符数&gt; = 0
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
文本
</dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></code> - 给定的范围包括文档中不是有效位置的位置
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/Document.html#getText-int-int-"><code>Document.getText(int, int)</code></a>
</dd>
</dl> </li>
</ul> <a name="getText-int-int-javax.swing.text.Segment-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>getText</h4> <pre>public void getText(int offset,
int length,
<a href="../../../javax/swing/text/Segment.html" title="class in javax.swing.text">Segment</a> txt)
throws <a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></pre>
<div class="block">
<span>获取文档给定部分中包含的文本。</span>
<p> <span>如果txt参数的partialReturn属性为false，则在段中返回的数据将是所请求的整个长度，并且根据数据的存储方式可以复制或不复制。</span> <span>如果partialReturn属性为true，则只返回无需创建副本的文本数量。</span> <span>使用部分返回将会在扫描文档的大部分的情况下提供更好的性能。</span> <span>以下是使用部分返回访问整个文档的示例：</span> </p>
<pre> <span>  int nleft = doc.getDocumentLength();
  Segment text = new Segment();
  int offs = 0;
  text.setPartialReturn(true);
  while (nleft &gt; 0) {
  doc.getText(offs, nleft, text);
  // do something with text
  nleft -= text.count;
  offs += text.count;
  }</span> </pre>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#getText-int-int-javax.swing.text.Segment-">getText</a></code>在界面
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>offset</code> - 起始偏移量&gt; = 0
</dd>
<dd>
<code>length</code> - 要检索的字符数&gt; = 0
</dd>
<dd>
<code>txt</code> - 将文本检索到的Segment对象
</dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></code> - 给定的范围包括文档中不是有效位置的位置
</dd>
</dl> </li>
</ul> <a name="createPosition-int-">
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<ul class="blockList">
<li class="blockList"> <h4>createPosition</h4> <pre>public <a href="../../../javax/swing/text/Position.html" title="interface in javax.swing.text">Position</a> createPosition(int offs)
throws <a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></pre>
<div class="block">
<span>返回在文档更改时跟踪更改的位置。</span>
<p> <span>这种方法是线程安全的，尽管大多数Swing方法都不是。</span> <span>请参阅<a href="http://docs.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency in Swing</a>了解更多信息。</span> </p>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#createPosition-int-">createPosition</a></code>在接口
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>offs</code> - 模型中的位置&gt; = 0
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
的位置
</dd>
<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/BadLocationException.html" title="class in javax.swing.text">BadLocationException</a></code> - 如果给定的位置不表示相关文档中的有效位置
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/Document.html#createPosition-int-"><code>Document.createPosition(int)</code></a>
</dd>
</dl> </li>
</ul> <a name="getStartPosition--">
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<ul class="blockList">
<li class="blockList"> <h4>getStartPosition</h4> <pre>public final <a href="../../../javax/swing/text/Position.html" title="interface in javax.swing.text">Position</a> getStartPosition()</pre>
<div class="block">
<span>返回表示文档开头的位置。</span>
<span>返回的位置可以计入跟踪更改并保持位于文档的开头。</span>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#getStartPosition--">getStartPosition</a></code>在接口
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
的位置
</dd>
</dl> </li>
</ul> <a name="getEndPosition--">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>getEndPosition</h4> <pre>public final <a href="../../../javax/swing/text/Position.html" title="interface in javax.swing.text">Position</a> getEndPosition()</pre>
<div class="block">
<span>返回表示文档结尾的位置。</span>
<span>返回的位置可以计入跟踪更改并保留在文档的末尾。</span>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#getEndPosition--">getEndPosition</a></code>在接口
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
的位置
</dd>
</dl> </li>
</ul> <a name="getRootElements--">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>getRootElements</h4> <pre>public <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a>[] getRootElements()</pre>
<div class="block">
<span>获取定义的所有根元素。</span>
<span>通常，只有一个，默认的实现是返回默认的根元素。</span>
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#getRootElements--">getRootElements</a></code>在界面
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
根元素
</dd>
</dl> </li>
</ul> <a name="getDefaultRootElement--">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>getDefaultRootElement</h4> <pre>public abstract <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> getDefaultRootElement()</pre>
<div class="block">
返回视图应该基于的根元素，除非提供了用于将视图分配给元素结构的其他机制。
</div>
<dl>
<dt>
<span class="overrideSpecifyLabel">Specified by:</span>
</dt>
<dd>
<code><a href="../../../javax/swing/text/Document.html#getDefaultRootElement--">getDefaultRootElement</a></code>在界面
<code><a href="../../../javax/swing/text/Document.html" title="interface in javax.swing.text">Document</a></code>
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
根元素
</dd>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/Document.html#getDefaultRootElement--"><code>Document.getDefaultRootElement()</code></a>
</dd>
</dl> </li>
</ul> <a name="getBidiRootElement--">
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<ul class="blockList">
<li class="blockList"> <h4>getBidiRootElement</h4> <pre>public <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> getBidiRootElement()</pre>
<div class="block">
<span>返回此文档的双向结构的根元素。</span>
<span>它的孩子代表具有给定的Unicode bidi级别的字符运行。</span>
</div> </li>
</ul> <a name="getParagraphElement-int-">
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<ul class="blockList">
<li class="blockList"> <h4>getParagraphElement</h4> <pre>public abstract <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> getParagraphElement(int pos)</pre>
<div class="block">
<span>获取包含给定位置的段落元素。</span>
<span>子类必须自己定义什么是一个段落。</span>
<span>他们应该记住，段落至少应该是运行Unicode双向算法的文本单位。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>pos</code> - 起始偏移量&gt; = 0
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
元素
</dd>
</dl> </li>
</ul> <a name="getAttributeContext--">
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<ul class="blockList">
<li class="blockList"> <h4>getAttributeContext</h4> <pre>protected final <a href="../../../javax/swing/text/AbstractDocument.AttributeContext.html" title="interface in javax.swing.text">AbstractDocument.AttributeContext</a> getAttributeContext()</pre>
<div class="block">
<span>获取管理属性的上下文。</span>
<span>该方法有效地建立了用于压缩AttributeSet信息的策略。</span>
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
上下文
</dd>
</dl> </li>
</ul> <a name="insertUpdate-javax.swing.text.AbstractDocument.DefaultDocumentEvent-javax.swing.text.AttributeSet-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>insertUpdate</h4> <pre>protected void insertUpdate(<a href="../../../javax/swing/text/AbstractDocument.DefaultDocumentEvent.html" title="class in javax.swing.text">AbstractDocument.DefaultDocumentEvent</a> chng,
<a href="../../../javax/swing/text/AttributeSet.html" title="interface in javax.swing.text">AttributeSet</a> attr)</pre>
<div class="block">
<span>更新由于文本插入而导致的文档结构。</span>
<span>这将在写锁中发生。</span>
<span>如果此类的子类重新实现此方法，那么它也应该委托给超类。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>chng</code> - 变更的说明
</dd>
<dd>
<code>attr</code> - 更改的属性
</dd>
</dl> </li>
</ul> <a name="removeUpdate-javax.swing.text.AbstractDocument.DefaultDocumentEvent-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>removeUpdate</h4> <pre>protected void removeUpdate(<a href="../../../javax/swing/text/AbstractDocument.DefaultDocumentEvent.html" title="class in javax.swing.text">AbstractDocument.DefaultDocumentEvent</a> chng)</pre>
<div class="block">
<span>由于删除文字而更新任何文档结构。</span>
<span>在从内容中实际删除文本之前调用此方法。</span>
<span>这将在写锁中发生。</span>
<span>如果此类的子类重新实现此方法，那么它也应该委托给超类。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>chng</code> - 变更的描述
</dd>
</dl> </li>
</ul> <a name="postRemoveUpdate-javax.swing.text.AbstractDocument.DefaultDocumentEvent-">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>postRemoveUpdate</h4> <pre>protected void postRemoveUpdate(<a href="../../../javax/swing/text/AbstractDocument.DefaultDocumentEvent.html" title="class in javax.swing.text">AbstractDocument.DefaultDocumentEvent</a> chng)</pre>
<div class="block">
<span>由于删除文字而更新任何文档结构。</span>
<span>在从内容中删除文本后调用此方法。</span>
<span>这将在写锁中发生。</span>
<span>如果此类的子类重新实现此方法，那么它也应该委托给超类。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>chng</code> - 变更的说明
</dd>
</dl> </li>
</ul> <a name="dump-java.io.PrintStream-">
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<ul class="blockList">
<li class="blockList"> <h4>dump</h4> <pre>public void dump(<a href="../../../java/io/PrintStream.html" title="class in java.io">PrintStream</a> out)</pre>
<div class="block">
提供诊断转储。
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>out</code> - 输出流
</dd>
</dl> </li>
</ul> <a name="getContent--">
<!-- --> </a>
<ul class="blockList">
<li class="blockList"> <h4>getContent</h4> <pre>protected final <a href="../../../javax/swing/text/AbstractDocument.Content.html" title="interface in javax.swing.text">AbstractDocument.Content</a> getContent()</pre>
<div class="block">
获取文档的内容。
</div>
<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
内容
</dd>
</dl> </li>
</ul> <a name="createLeafElement-javax.swing.text.Element-javax.swing.text.AttributeSet-int-int-">
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<ul class="blockList">
<li class="blockList"> <h4>createLeafElement</h4> <pre>protected <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> createLeafElement(<a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> parent,
<a href="../../../javax/swing/text/AttributeSet.html" title="interface in javax.swing.text">AttributeSet</a> a,
int p0,
int p1)</pre>
<div class="block">
<span>创建文档叶元素。</span>
<span>挂钩通过哪些元素创建来表示文档结构。</span>
<span>因为这个实现保持结构和内容的分离，当内容被扩展时，元素就会自动增长，因此现有元素的分割跟随。</span>
<span>文档本身可以决定如何生成元素以使所使用元素的类型具有灵活性。</span>
</div>
<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>parent</code> - 父元素
</dd>
<dd>
<code>a</code> - 元素的属性
</dd>
<dd>
<code>p0</code> - 范围的开始&gt; = 0
</dd>
<dd>
<code>p1</code> - 范围的结束&gt; = p0
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
新元素
</dd>
</dl> </li>
</ul> <a name="createBranchElement-javax.swing.text.Element-javax.swing.text.AttributeSet-">
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<ul class="blockList">
<li class="blockList"> <h4>createBranchElement</h4> <pre>protected <a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> createBranchElement(<a href="../../../javax/swing/text/Element.html" title="interface in javax.swing.text">Element</a> parent,
<a href="../../../javax/swing/text/AttributeSet.html" title="interface in javax.swing.text">AttributeSet</a> a)</pre>
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创建一个可以包含其他元素的文档分支元素。
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<dl>
<dt>
<span class="paramLabel">参数</span>
</dt>
<dd>
<code>parent</code> - 父元素
</dd>
<dd>
<code>a</code> - 属性
</dd>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
元素
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<li class="blockList"> <h4>getCurrentWriter</h4> <pre>protected final <a href="../../../java/lang/Thread.html" title="class in java.lang">Thread</a> getCurrentWriter()</pre>
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<span>获取当前的书写线程，如果有的话。</span>
<span>这可以用于区分是否将方法作为现有修改的一部分进行调用，或者是否需要获取锁定并启动新的事务。</span>
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<dl>
<dt>
<span class="returnLabel">结果</span>
</dt>
<dd>
线程主动修改文档或
<code>null</code>如果没有进行修改
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<li class="blockList"> <h4>writeLock</h4> <pre>protected final void writeLock()</pre>
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<span>获取一个锁，开始变更此锁保护的文档。</span>
<span>为了获得锁定，可能没有写作，更改通知或阅读。</span>
<span>此外，一个线程允许获得多于一个<code>writeLock</code> ，只要它不会从文档通知中获得额外的<code>writeLock</code> s。</span>
<span>试图获得一个<code>writeLock</code>从通知的DocumentListener内将导致<code>IllegalStateException</code> 。</span>
<span>每个线程获得多个<code>writeLock</code>的能力允许子类获取一个writeLock，执行一些操作，然后释放该锁。</span>
<p> <span>呼叫<code>writeLock</code>必须通过调用来平衡<code>writeUnlock</code> ，否则<code>Document</code>将处于锁定状态留下所以没有读或写可以做到的。</span> </p>
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<dt>
<span class="throwsLabel">异常</span>
</dt>
<dd>
<span><code><a href="../../../java/lang/IllegalStateException.html" title="class in java.lang">IllegalStateException</a></code> - 抛出非法锁定尝试。</span>
<span>如果文档被正确实现，这只能在文档侦听器尝试变更文档时发生。</span>
<span>这种情况违反了bean事件模型，其中不能保证交付顺序，并且在允许进一步突变之前应通知所有收听者。</span>
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<li class="blockList"> <h4>writeUnlock</h4> <pre>protected final void writeUnlock()</pre>
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<span>释放先前通过<code>writeLock</code>获得的写锁定。</span>
<span>如果没有未完成的锁定，则递减锁定计数，这将允许新的作者或读者。</span>
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<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#writeLock--"><code>writeLock()</code></a>
</dd>
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<li class="blockList"> <h4>readLock</h4> <pre>public final void readLock()</pre>
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<span>获取一个锁，从文档开始读取一些状态。</span>
<span>同时可以有多个读卡器。</span>
<span>写入阻止读者，直到听众的更改通知完成。</span>
<span>应该非常仔细地使用这种方法，以避免文件的意外妥协。</span>
<span>它应该总是与<code>readUnlock</code>平衡。</span>
</div>
<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#readUnlock--"><code>readUnlock()</code></a>
</dd>
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<li class="blockList"> <h4>readUnlock</h4> <pre>public final void readUnlock()</pre>
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<span>读取解锁</span>
<span>这表明其中一位读者已经完成了。</span>
<span>如果没有更多的读者，写作可以重新开始。</span>
<span>这应该与readLock平衡，并且应该在finally语句中进行平衡，以保证平衡。</span>
<span>以下是一个例子。</span>
<pre> <span><code>   readLock();   try {   // do something   } finally {   readUnlock();   } </code></span> </pre>
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<dl>
<dt>
<span class="seeLabel">另请参见：</span>
</dt>
<dd>
<a href="../../../javax/swing/text/AbstractDocument.html#readLock--"><code>readLock()</code></a>
</dd>
</dl> </li>
</ul> </li>
</ul> </li>
</ul>
</div>
</div>
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