maxGraph/java/docs/com/mxgraph/io/mxCodec.html

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<title>mxCodec (mxGraph 3.4.1.3 API Specification)</title>
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<div class="subTitle">com.mxgraph.io</div>
<h2 title="Class mxCodec" class="title">Class mxCodec</h2>
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<li><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<pre>public class <span class="strong">mxCodec</span>
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extends <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
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<div class="block">XML codec for Java object graphs. In order to resolve forward references
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when reading files the XML document that contains the data must be passed
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to the constructor.</div>
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<h3>Field Summary</h3>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tr class="altColor">
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<td class="colFirst"><code>protected <a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Document.html?is-external=true" title="class or interface in org.w3c.dom">Document</a></code></td>
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<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#document">document</a></strong></code>
<div class="block">Holds the owner document of the codec.</div>
</td>
</tr>
<tr class="rowColor">
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<td class="colFirst"><code>protected <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#elements">elements</a></strong></code>
<div class="block">Maps from IDs to elements.</div>
</td>
</tr>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#encodeDefaults">encodeDefaults</a></strong></code>
<div class="block">Specifies if default values should be encoded.</div>
</td>
</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>protected <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;</code></td>
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<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#objects">objects</a></strong></code>
<div class="block">Maps from IDs to objects.</div>
</td>
</tr>
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<h3>Constructor Summary</h3>
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<caption><span>Constructors</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colOne" scope="col">Constructor and Description</th>
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<tr class="altColor">
<td class="colOne"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#mxCodec()">mxCodec</a></strong>()</code>
<div class="block">Constructs an XML encoder/decoder with a new owner document.</div>
</td>
</tr>
<tr class="rowColor">
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<td class="colOne"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#mxCodec(org.w3c.dom.Document)">mxCodec</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Document.html?is-external=true" title="class or interface in org.w3c.dom">Document</a>&nbsp;document)</code>
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<div class="block">Constructs an XML encoder/decoder for the specified owner document.</div>
</td>
</tr>
</table>
</li>
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<h3>Method Summary</h3>
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<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tr class="altColor">
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#addElement(org.w3c.dom.Node)">addElement</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node)</code>
<div class="block">Adds the given element to <elements> if it has an ID.</div>
</td>
</tr>
<tr class="rowColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#decode(org.w3c.dom.Node)">decode</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node)</code>
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<div class="block">Decodes the given XML node using <a href="../../../com/mxgraph/io/mxCodec.html#decode(org.w3c.dom.Node, java.lang.Object)"><code>decode(Node, Object)</code></a>.</div>
</td>
</tr>
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<tr class="altColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#decode(org.w3c.dom.Node, java.lang.Object)">decode</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node,
<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;into)</code>
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<div class="block">Decodes the given XML node.</div>
</td>
</tr>
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<tr class="rowColor">
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<td class="colFirst"><code><a href="../../../com/mxgraph/model/mxICell.html" title="interface in com.mxgraph.model">mxICell</a></code></td>
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<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#decodeCell(org.w3c.dom.Node, boolean)">decodeCell</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node,
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boolean&nbsp;restoreStructures)</code>
<div class="block">Decodes cells that have been encoded using inversion, ie.</div>
</td>
</tr>
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<tr class="altColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a></code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#encode(java.lang.Object)">encode</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</code>
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<div class="block">Encodes the specified object and returns the resulting XML node.</div>
</td>
</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#encodeCell(com.mxgraph.model.mxICell, org.w3c.dom.Node, boolean)">encodeCell</a></strong>(<a href="../../../com/mxgraph/model/mxICell.html" title="interface in com.mxgraph.model">mxICell</a>&nbsp;cell,
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<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node,
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boolean&nbsp;includeChildren)</code>
<div class="block">Encoding of cell hierarchies is built-into the core, but is a
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higher-level function that needs to be explicitely used by the
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respective object encoders (eg.</div>
</td>
</tr>
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<tr class="altColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Document.html?is-external=true" title="class or interface in org.w3c.dom">Document</a></code></td>
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<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#getDocument()">getDocument</a></strong>()</code>
<div class="block">Returns the owner document of the codec.</div>
</td>
</tr>
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<tr class="rowColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a></code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#getElementById(java.lang.String)">getElementById</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id)</code>
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<div class="block">Returns the element with the given ID from the document.</div>
</td>
</tr>
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<tr class="altColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#getId(java.lang.Object)">getId</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</code>
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<div class="block">Returns the ID of the specified object.</div>
</td>
</tr>
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<tr class="rowColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#getObject(java.lang.String)">getObject</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id)</code>
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<div class="block">Returns the decoded object for the element with the specified ID in
<a href="../../../com/mxgraph/io/mxCodec.html#document"><code>document</code></a>.</div>
</td>
</tr>
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<tr class="altColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;</code></td>
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<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#getObjects()">getObjects</a></strong>()</code>
<div class="block">Returns the object lookup table.</div>
</td>
</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#insertIntoGraph(com.mxgraph.model.mxICell)">insertIntoGraph</a></strong>(<a href="../../../com/mxgraph/model/mxICell.html" title="interface in com.mxgraph.model">mxICell</a>&nbsp;cell)</code>
<div class="block">Inserts the given cell into its parent and terminal cells.</div>
</td>
</tr>
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<tr class="altColor">
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#isEncodeDefaults()">isEncodeDefaults</a></strong>()</code>
<div class="block">Returns if default values of member variables should be encoded.</div>
</td>
</tr>
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<tr class="rowColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#lookup(java.lang.String)">lookup</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id)</code>
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<div class="block">Hook for subclassers to implement a custom lookup mechanism for cell IDs.</div>
</td>
</tr>
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<tr class="altColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#putObject(java.lang.String, java.lang.Object)">putObject</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id,
<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;object)</code>
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<div class="block">Assoiates the given object with the given ID.</div>
</td>
</tr>
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<tr class="rowColor">
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<td class="colFirst"><code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#reference(java.lang.Object)">reference</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</code>
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<div class="block">Hook for subclassers to implement a custom method for retrieving IDs from
objects.</div>
</td>
</tr>
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<tr class="altColor">
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<td class="colFirst"><code>static void</code></td>
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<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#setAttribute(org.w3c.dom.Node, java.lang.String, java.lang.Object)">setAttribute</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node,
<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;attribute,
<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value)</code>
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<div class="block">Sets the attribute on the specified node to value.</div>
</td>
</tr>
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<tr class="rowColor">
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<td class="colFirst"><code>void</code></td>
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<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#setDocument(org.w3c.dom.Document)">setDocument</a></strong>(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Document.html?is-external=true" title="class or interface in org.w3c.dom">Document</a>&nbsp;value)</code>
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<div class="block">Sets the owner document of the codec.</div>
</td>
</tr>
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<tr class="altColor">
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/mxgraph/io/mxCodec.html#setEncodeDefaults(boolean)">setEncodeDefaults</a></strong>(boolean&nbsp;encodeDefaults)</code>
<div class="block">Sets if default values of member variables should be encoded.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3>
<code><a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li>
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</ul>
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<pre>protected&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Document.html?is-external=true" title="class or interface in org.w3c.dom">Document</a> document</pre>
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<div class="block">Holds the owner document of the codec.</div>
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<pre>protected&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt; objects</pre>
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<div class="block">Maps from IDs to objects.</div>
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<pre>protected&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&gt; elements</pre>
<div class="block">Maps from IDs to elements.</div>
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<pre>protected&nbsp;boolean encodeDefaults</pre>
<div class="block">Specifies if default values should be encoded. Default is false.</div>
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<pre>public&nbsp;mxCodec()</pre>
<div class="block">Constructs an XML encoder/decoder with a new owner document.</div>
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<pre>public&nbsp;mxCodec(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Document.html?is-external=true" title="class or interface in org.w3c.dom">Document</a>&nbsp;document)</pre>
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<div class="block">Constructs an XML encoder/decoder for the specified owner document.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>document</code> - Optional XML document that contains the data. If no document
is specified then a new document is created using mxUtils.createDocument</dd></dl>
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Document.html?is-external=true" title="class or interface in org.w3c.dom">Document</a>&nbsp;getDocument()</pre>
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<div class="block">Returns the owner document of the codec.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Returns the owner document.</dd></dl>
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<pre>public&nbsp;void&nbsp;setDocument(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Document.html?is-external=true" title="class or interface in org.w3c.dom">Document</a>&nbsp;value)</pre>
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<div class="block">Sets the owner document of the codec.</div>
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<pre>public&nbsp;boolean&nbsp;isEncodeDefaults()</pre>
<div class="block">Returns if default values of member variables should be encoded.</div>
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<pre>public&nbsp;void&nbsp;setEncodeDefaults(boolean&nbsp;encodeDefaults)</pre>
<div class="block">Sets if default values of member variables should be encoded.</div>
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</a>&lt;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>,<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&gt;&nbsp;getObjects()</pre>
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<div class="block">Returns the object lookup table.</div>
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;putObject(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id,
<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;object)</pre>
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<div class="block">Assoiates the given object with the given ID.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>id</code> - ID for the object to be associated with.</dd><dd><code>object</code> - Object to be associated with the ID.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Returns the given object.</dd></dl>
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;getObject(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id)</pre>
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<div class="block">Returns the decoded object for the element with the specified ID in
<a href="../../../com/mxgraph/io/mxCodec.html#document"><code>document</code></a>. If the object is not known then <a href="../../../com/mxgraph/io/mxCodec.html#lookup(java.lang.String)"><code>lookup(String)</code></a>
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is used to find an object. If no object is found, then the element with
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the respective ID from the document is parsed using <a href="../../../com/mxgraph/io/mxCodec.html#decode(org.w3c.dom.Node)"><code>decode(Node)</code></a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>id</code> - ID of the object to be returned.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Returns the object for the given ID.</dd></dl>
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;lookup(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id)</pre>
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<div class="block">Hook for subclassers to implement a custom lookup mechanism for cell IDs.
This implementation always returns null.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>id</code> - ID of the object to be returned.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Returns the object for the given ID.</dd></dl>
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;getElementById(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;id)</pre>
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<div class="block">Returns the element with the given ID from the document.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>id</code> - ID of the element to be returned.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Returns the element for the given ID.</dd></dl>
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<a name="addElement(org.w3c.dom.Node)">
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<pre>protected&nbsp;void&nbsp;addElement(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node)</pre>
<div class="block">Adds the given element to <elements> if it has an ID.</div>
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<a name="getId(java.lang.Object)">
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getId(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</pre>
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<div class="block">Returns the ID of the specified object. This implementation calls
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reference first and if that returns null handles the object as an
mxCell by returning their IDs using mxCell.getId. If no ID exists for
the given cell, then an on-the-fly ID is generated using
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mxCellPath.create.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>obj</code> - Object to return the ID for.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Returns the ID for the given object.</dd></dl>
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;reference(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</pre>
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<div class="block">Hook for subclassers to implement a custom method for retrieving IDs from
objects. This implementation always returns null.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>obj</code> - Object whose ID should be returned.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Returns the ID for the given object.</dd></dl>
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;encode(<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;obj)</pre>
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<div class="block">Encodes the specified object and returns the resulting XML node.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>obj</code> - Object to be encoded.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Returns an XML node that represents the given object.</dd></dl>
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;decode(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node)</pre>
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<div class="block">Decodes the given XML node using <a href="../../../com/mxgraph/io/mxCodec.html#decode(org.w3c.dom.Node, java.lang.Object)"><code>decode(Node, Object)</code></a>.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>node</code> - XML node to be decoded.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Returns an object that represents the given node.</dd></dl>
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<a name="decode(org.w3c.dom.Node, java.lang.Object)">
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<pre>public&nbsp;<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;decode(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node,
<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;into)</pre>
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<div class="block">Decodes the given XML node. The optional "into" argument specifies an
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existing object to be used. If no object is given, then a new
instance is created using the constructor from the codec.
The function returns the passed in object or the new instance if no
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object was given.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>node</code> - XML node to be decoded.</dd><dd><code>into</code> - Optional object to be decodec into.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Returns an object that represents the given node.</dd></dl>
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<pre>public&nbsp;void&nbsp;encodeCell(<a href="../../../com/mxgraph/model/mxICell.html" title="interface in com.mxgraph.model">mxICell</a>&nbsp;cell,
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<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node,
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boolean&nbsp;includeChildren)</pre>
<div class="block">Encoding of cell hierarchies is built-into the core, but is a
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higher-level function that needs to be explicitely used by the
respective object encoders (eg. mxModelCodec, mxChildChangeCodec
and mxRootChangeCodec). This implementation writes the given cell
and its children as a (flat) sequence into the given node. The
children are not encoded if the optional includeChildren is false.
The function is in charge of adding the result into the given node
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and has no return value.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>cell</code> - mxCell to be encoded.</dd><dd><code>node</code> - Parent XML node to add the encoded cell into.</dd><dd><code>includeChildren</code> - Boolean indicating if the method
should include all descendents.</dd></dl>
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<pre>public&nbsp;<a href="../../../com/mxgraph/model/mxICell.html" title="interface in com.mxgraph.model">mxICell</a>&nbsp;decodeCell(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node,
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boolean&nbsp;restoreStructures)</pre>
<div class="block">Decodes cells that have been encoded using inversion, ie. where the
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user object is the enclosing node in the XML, and restores the group
and graph structure in the cells. Returns a new <mxCell> instance
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that represents the given node.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>node</code> - XML node that contains the cell data.</dd><dd><code>restoreStructures</code> - Boolean indicating whether the graph
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structure should be restored by calling insert and insertEdge on the
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parent and terminals, respectively.</dd>
<dt><span class="strong">Returns:</span></dt><dd>Graph cell that represents the given node.</dd></dl>
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<h4>insertIntoGraph</h4>
<pre>public&nbsp;void&nbsp;insertIntoGraph(<a href="../../../com/mxgraph/model/mxICell.html" title="interface in com.mxgraph.model">mxICell</a>&nbsp;cell)</pre>
<div class="block">Inserts the given cell into its parent and terminal cells.</div>
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<h4>setAttribute</h4>
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<pre>public static&nbsp;void&nbsp;setAttribute(<a href="http://download.oracle.com/javase/1.5.0/docs/api/org/w3c/dom/Node.html?is-external=true" title="class or interface in org.w3c.dom">Node</a>&nbsp;node,
<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;attribute,
<a href="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value)</pre>
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<div class="block">Sets the attribute on the specified node to value. This is a
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helper method that makes sure the attribute and value arguments
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are not null.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>node</code> - XML node to set the attribute for.</dd><dd><code>attribute</code> - Name of the attribute whose value should be set.</dd><dd><code>value</code> - New value of the attribute.</dd></dl>
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