uTools-Manuals/docs/java/javax/swing/text/Position.html

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     javax.swing.text 
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<h2 class="title" title="Interface Position">Interface Position</h2>
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<hr/> <br/> <pre>public interface <span class="typeNameLabel">Position</span></pre>
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<span>表示文档中的位置。</span>
<span>它旨在抽象出文档的实现细节，并且能够在文档中编辑能够跟踪变化的文档中的位置的指定。</span>
<p> <span>一个<code>Position</code>对象指向两个字符之间的位置。</span> <span>随着周围内容的改变， <code>Position</code>对象自动调整其偏移量以反映更改。</span> <span>如果在<code>Position</code>对象的位置之前插入或删除了内容，那么<code>Position</code>分别递增或递减其偏移量，以指向相同的位置。</span> <span>如果删除了包含<code>Position</code>的偏移量的文档的一部分，则<code>Position</code>的偏移量将变为已移除区域的开始位置。</span> <span>例如，如果<code>Position</code>的偏移量为5，而区域2-10被移除，则<code>Position</code>的偏移量为2。</span> </p>
<p> <span>偏移量为0的<code>Position</code>是一种特殊情况。</span> <span>它在文档内容被更改时从不改变其偏移量。</span> </p>
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<td class="colFirst"><code>static class </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/Position.Bias.html" title="class in javax.swing.text">Position.Bias</a></span></code>
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              一种类型安全的枚举，用于指示模型中位置的偏差。 
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<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../javax/swing/text/Position.html#getOffset--">getOffset</a></span>()</code>
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              获取文档中的当前偏移量。 
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<li class="blockList"> <h4>getOffset</h4> <pre>int getOffset()</pre>
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            获取文档中的当前偏移量。 
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             offset&gt; = 0 
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