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<!doctype html public "-//w3c//dtd html 4.0 transitional//en">
<html>
<head>
   <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
   <meta name="GENERATOR" content="Mozilla/4.75 [en] (WinNT; U) [Netscape]">
   <title>Compare Extension Points: contentViewers</title>
</head>
<body link="#0000FF" vlink="#800080">

<center>
<h1>
ContentViewers</h1></center>
<b><i>Identifier: </i></b>org.eclipse.compare.contentViewers
<p><b><i>Description: </i></b>This extension point allows to plug in a
viewer for specific content types. These viewers are used in the EditionSelectionDialog
when presenting an edition of a resource or a subsection thereof. The viewer
must extend
<tt>org.eclipse.jface.viewers.Viewer</tt> and must accept a
viewer input of type <tt>IStreamContentAccessor</tt>.
<br>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 content
merge viewer and implements <tt>org.eclipse.compare.IViewerCreator</tt></li>

<li>
<b>extensions </b>- a comma separated list of file extensions e.g . "java,
gif"</li>
</ul>
<b><i>Examples:</i></b>
<br>The following is an example of a viewer for text files (extension "txt"):
<p>&lt;extension point = "org.eclipse.compare.contentViewers">
<br>&nbsp;&nbsp;&nbsp;&nbsp; &lt;viewer
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; id="org.eclipse.compare.internal.TextViewer"
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; class="org.eclipse.compare.internal.TextViewerCreator"
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; extensions="txt"
<br>&nbsp;&nbsp;&nbsp; />
<br>&lt;/extension>
<p><b><i>Supplied Implementation:</i></b>
<br>The Compare UI plugin defines content viewers for text and images.
<p><a href="hglegal.htm"><img SRC="ngibmcpy.gif" ALT="Copyright IBM Corp. 2000, 2001.  All Rights Reserved." BORDER=0 height=12 width=195></a>
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