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   <title>Compare Extension Points: structureMergeViewers</title>
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<center>
<h1>
StructureMergeViewer</h1></center>
<b><i>Identifier: </i></b>org.eclipse.compare.structureMergeViewers
<p><b><i>Description: </i></b>This extension point allows to plug in a
compare/merge viewer for structured content. The viewer must extend <tt>org.eclipse.jface.viewers.Viewer</tt>.
However since viewers don't have a default constructor the extension point
must implement a factory object for viewers: the interface <tt>org.eclipse.compare.IViewerCreator</tt>.
<p><b><i>Configuration Markup:</i></b>
<p><tt>&nbsp;&nbsp; &lt;!ELEMENT viewer EMPTY></tt>
<br><tt>&nbsp;&nbsp; &lt;!ATTLIST viewer</tt>
<br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; id&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
CDATA #REQUIRED</tt>
<br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; class&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
CDATA #REQUIRED</tt>
<br><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; extensions CDATA #REQUIRED</tt>
<br><tt>&nbsp;&nbsp; ></tt>
<ul>
<li>
<b>id</b> - a unique identifier that can be used to reference the viewer</li>

<li>
<b>class</b> - name of a class that implements a factory for the strcuture
merge viewer and implements <tt>org.eclipse.compare.IViewerCreator</tt></li>

<li>
<b>extensions </b>- a comma separated list of file extensions e.g . "zip,
jar"</li>
</ul>
<b><i>Examples:</i></b>
<br>The following is an example of compare/merge viewer for zip files (extension
"zip"):
<p>&lt;extension point = "org.eclipse.compare.structureMergeViewers">
<br>&nbsp;&nbsp;&nbsp;&nbsp; &lt;viewer
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; id="org.eclipse.compare.ZipCompareViewer"
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; class="org.eclipse.compare.ZipCompareViewerCreator"
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; extensions="zip"
<br>&nbsp;&nbsp;&nbsp; />
<br>&lt;/extension>
<p><b><i>Supplied Implementation:</i></b>
<br>The Compare UI plugin defines a structure compare viewer for zip archives.
<p><a href="hglegal.htm"><img SRC="ngibmcpy.gif" ALT="Copyright IBM Corporation 2000" BORDER=0 height=12 width=195></a>
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