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-<html>
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-<meta http-equiv=Content-Type content="text/html; charset=windows-1252">
-<meta name=Generator content="Microsoft Word 11 (filtered)">
-<title>Providing resize functionality</title>
-<link rel=Stylesheet type="text/css" media=all href="../book.css">
-<style>
-<!--
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- {font-family:Tahoma;
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+<title>Providing Resize Functionality</title>
+<link href="../book.css" rel="Stylesheet" type="text/css">
+<link href="../code.css" rel="Stylesheet" type="text/css">
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-<body bgcolor=white lang=DE link=blue vlink=purple style='margin-bottom:12.0pt'>
+<body>
-<div class=Section1>
-
-<h1><a name="_Toc179099521"><span lang=EN-GB>Providing Resize Functionality</span></a></h1>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
-
-<h2><span lang=EN-GB>Creating a Resize Feature</span></h2>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
-
-<p class=MsoNormal><span lang=EN-US style='color:black'>In our current editor
-the resize functionality is already provided by the framework. Nevertheless
-this tutorial should explain how the resize behavior can be customized.
-Therefore we constructed the following example behavior:</span></p>
-
-<p class=MsoNormal><span lang=EN-US style='color:black'>Resizing EClasses
-should be restricted to EClasses whose name is longer than one character
-(just an example without logical reason).</span></p>
-
-<p class=MsoNormal><span lang=EN-US style='color:black'>Remember, that we
-already <a href="move-feature.htm">provided move functionality</a>, which
-restricted the move of EClasses whose name is longer than one character. Now
-we want to additionally restrict the resize. </span></p>
-
-<p class=MsoNormal><span lang=EN-US style='color:black'> </span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'>A resize feature has to
-implement the interface </span><span class=code1><span lang=EN-US
-style='color:black'><a
-href="../../../javadoc/org/eclipse/graphiti/features/IResizeShapeFeature.html"><span
-style='font-style:normal'>IResizeShapeFeature</span></a></span></span><span
-lang=EN-GB style='color:black'>. Instead of implementing this directly you
-should extend one of the available base classes.</span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'>In this example we
-extend the base class<span class=code1> </span></span><span class=code1><span
-lang=EN-US style='color:black'><a
-href="../../../javadoc/org/eclipse/graphiti/features/impl/DefaultResizeShapeFeature.html"><span
-style='font-style:normal'>DefaultResizeShapeFeature</span></a></span></span><span
-lang=EN-GB style='color:black'>. </span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'>There are two methods
-to overwrite: </span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'>The method <a
-href="../../../javadoc/org/eclipse/graphiti/func/IResizeShape.html#canResizeShape(org.eclipse.graphiti.features.context.IResizeShapeContext)">canResizeShape</a>
-has to check if this feature can do the resize corresponding to the given
-context. </span><span lang=EN-US style='color:black'>In this case the location
-information contained in the context consists of the shape to be resized.</span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'>The method </span><span
-class=code1><span lang=EN-US style='color:black'><a
-href="../../../javadoc/org/eclipse/graphiti/func/IResizeShape.html#resizeShape(org.eclipse.graphiti.features.context.IResizeShapeContext)"><span
-style='font-style:normal'>resizeShape</span></a></span></span><span lang=EN-GB
-style='color:black'> does the final resize. </span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'>You can see the
-complete implementation of the resize feature here:</span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
-
-<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=907
- style='width:18.0cm;border-collapse:collapse'>
- <tr>
- <td width=907 valign=top style='width:18.0cm;border:solid windowtext 1.0pt;
- padding:0cm 5.4pt 0cm 5.4pt'>
- <p class=MsoNormal style='text-autospace:none'><b><span lang=EN-GB
- style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'> </span></b></p>
- <p class=MsoNormal style='text-autospace:none'><b><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>package</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- org.eclipse.graphiti.examples.tutorial.features;</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New"'> </span></p>
- <p class=MsoNormal style='text-autospace:none'><b><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>public</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>class</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- TutorialResizeEClassFeature </span><b><span lang=EN-US style='font-size:10.0pt;
- font-family:"Courier New";color:#7F0055'>extends</span></b><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'>
- DefaultResizeShapeFeature {</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>public</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- TutorialResizeEClassFeature(IFeatureProvider fp) {</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>super</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>(fp);</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> }</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New"'> </span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#646464'>@Override</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>public</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>boolean</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- canResizeShape(IResizeShapeContext context) {</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>boolean</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- canResize = </span><b><span lang=EN-US style='font-size:10.0pt;font-family:
- "Courier New";color:#7F0055'>super</span></b><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'>.canResizeShape(context);</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New"'> </span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>//
- perform further check only if move allowed by default feature</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>if</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- (canResize) {</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'>//
- don't allow resize if the class name has the length of 1</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> Shape
- shape = context.getShape();</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'>
- Object bo = getBusinessObjectForPictogramElement(shape);</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>if</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- (bo </span><b><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";
- color:#7F0055'>instanceof</span></b><span lang=EN-US style='font-size:10.0pt;
- font-family:"Courier New";color:black'> EClass) {</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'>
- EClass c = (EClass) bo;</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'>
- </span><b><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";
- color:#7F0055'>if</span></b><span lang=EN-US style='font-size:10.0pt;
- font-family:"Courier New";color:black'> (c.getName() != </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>null</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- && c.getName().length() == 1) {</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'>
- </span><span style='font-size:10.0pt;font-family:"Courier New";color:black'>canResize
- = </span><b><span style='font-size:10.0pt;font-family:"Courier New";
- color:#7F0055'>false</span></b><span style='font-size:10.0pt;font-family:
- "Courier New";color:black'>;</span></p>
- <p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
- font-family:"Courier New";color:black'> }</span></p>
- <p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
- font-family:"Courier New";color:black'> }</span></p>
- <p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
- font-family:"Courier New";color:black'> }</span></p>
- <p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
- font-family:"Courier New";color:black'> </span><b><span
- style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>return</span></b><span
- style='font-size:10.0pt;font-family:"Courier New";color:black'> canResize;</span></p>
- <p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
- font-family:"Courier New";color:black'> }</span></p>
- <p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
- font-family:"Courier New";color:black'>}</span></p>
- <p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
- </td>
- </tr>
-</table>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'>Additionally the
-feature provider has to deliver our newly created feature (overwrite the method
-</span><span class=code1><span lang=EN-US style='color:black'><a
-href="../../../javadoc/org/eclipse/graphiti/features/IFeatureProvider.html#getResizeShapeFeature(org.eclipse.graphiti.features.context.IResizeShapeContext)"><span
-style='font-style:normal'>getResizeShapeFeature</span></a></span></span><span
-class=code1><span lang=EN-US style='color:black;font-style:normal'>).</span></span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'>This implementation can
-be seen here:</span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
-
-<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=907
- style='width:18.0cm;border-collapse:collapse'>
- <tr>
- <td width=907 valign=top style='width:18.0cm;border:solid windowtext 1.0pt;
- padding:0cm 5.4pt 0cm 5.4pt'>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-GB
- style='font-size:10.0pt;font-family:"Courier New";color:#3F7F5F'> </span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#646464'>@Override</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>public</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- IResizeShapeFeature getResizeShapeFeature(</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> IResizeShapeContext
- context) {</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> Shape
- shape = context.getShape();</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> Object
- bo = getBusinessObjectForPictogramElement(shape);</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>if</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- (bo </span><b><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";
- color:#7F0055'>instanceof</span></b><span lang=EN-US style='font-size:10.0pt;
- font-family:"Courier New";color:black'> EClass) {</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>return</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>new</span></b><span
- lang=EN-US style='font-size:10.0pt;font-family:"Courier New";color:black'>
- TutorialResizeEClassFeature(</span><b><span lang=EN-US style='font-size:10.0pt;
- font-family:"Courier New";color:#7F0055'>this</span></b><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'>);</span></p>
- <p class=MsoNormal style='text-autospace:none'><span lang=EN-US
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><span
- style='font-size:10.0pt;font-family:"Courier New";color:black'>}</span></p>
- <p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
- font-family:"Courier New";color:black'> </span><b><span
- style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>return</span></b><span
- style='font-size:10.0pt;font-family:"Courier New";color:black'> </span><b><span
- style='font-size:10.0pt;font-family:"Courier New";color:#7F0055'>super</span></b><span
- style='font-size:10.0pt;font-family:"Courier New";color:black'>.getResizeShapeFeature(context);</span></p>
- <p class=MsoNormal style='text-autospace:none'><span style='font-size:10.0pt;
- font-family:"Courier New";color:black'> }</span></p>
- <p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
- </td>
- </tr>
-</table>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
-
-<h2><span lang=EN-US>Test: Resize EClass Is Restricted</span></h2>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'> </span></p>
-
-<p class=MsoNormal><span lang=EN-GB style='color:black'>Now start the editor again
-and test it: Just create a EClass whose name is only one character long. This EClass can no longer be resized, because on selection the resize-handles do
-not appear any more. For EClasses whose name has more than one character the
-resize should still work.</span></p>
-
+<h1>Providing Resize Functionality</h1>
+<h2>Creating a Resize Feature</h2>
+<p>In our current editor the resize functionality is already provided by the framework.
+Nevertheless this tutorial should explain how the resize behavior can be customized.
+Therefore we constructed the following example behavior:</p>
+<p>Resizing EClasses should be restricted to EClasses whose name is longer than
+one character (just an example without logical reason).</p>
+<p>Remember, that we already <a href="move-feature.htm">provided move functionality</a>,
+which restricted the move of EClasses whose name is longer than one character. Now
+we want to additionally restrict the resize. </p>
+<p>A resize feature has to implement the interface
+<a href="../../../javadoc/org/eclipse/graphiti/features/IResizeShapeFeature.html">
+IResizeShapeFeature</a>. Instead of implementing this directly you should extend
+one of the available base classes.</p>
+<p>In this example we extend the base class<a href="../../../javadoc/org/eclipse/graphiti/features/impl/DefaultResizeShapeFeature.html">DefaultResizeShapeFeature</a>.
+</p>
+<p>There are two methods to overwrite: </p>
+<ul>
+ <li>The method
+ <a href="../../../javadoc/org/eclipse/graphiti/func/IResizeShape.html#canResizeShape(org.eclipse.graphiti.features.context.IResizeShapeContext)">
+ canResizeShape</a> has to check if this feature can do the resize corresponding
+ to the given context. In this case the location information contained in the
+ context consists of the shape to be resized.</li>
+ <li>The method
+ <a href="../../../javadoc/org/eclipse/graphiti/func/IResizeShape.html#resizeShape(org.eclipse.graphiti.features.context.IResizeShapeContext)">
+ resizeShape</a> does the final resize. </li>
+</ul>
+<p>You can see the complete implementation of the resize feature here:</p>
+<p> </p>
+<div class="literallayout">
+ <div class="incode">
+ <p class="code"><span class="keyword">package </span>org.eclipse.graphiti.examples.tutorial.features;<br> <br>
+ <span class="keyword">public class</span> TutorialResizeEClassFeature
+ <span class="keyword">extends </span>DefaultResizeShapeFeature {<br>
+ <br> <span class="keyword">public </span>TutorialResizeEClassFeature(IFeatureProvider
+ fp) {<br>
+ <span class="keyword">super</span>(fp);<br> }<br> <br>
+ @Override<br> <span class="keyword">public boolean</span>
+ canResizeShape(IResizeShapeContext context) {<br>
+ <span class="keyword">boolean</span> canResize = <span class="keyword">super</span>.canResizeShape(context);<br> <br>
+ <span class="comment">// perform further check only if move allowed by default
+ feature</span><br>
+ <span class="keyword">if</span> (canResize) {<br>
+ <span class="comment">// don't allow resize if the class name has the length
+ of 1</span><br>
+ Shape shape = context.getShape();<br>
+ Object bo = getBusinessObjectForPictogramElement(shape);<br>
+ <span class="keyword">if</span> (bo <span class="keyword">instanceof
+ </span>EClass) {<br>
+ EClass c = (EClass) bo;<br>
+ <span class="keyword">if </span>(c.getName() != <span class="keyword">null
+ </span>&& c.getName().length() == 1) {<br>
+ canResize = <span class="keyword">false</span>;<br>
+ }<br>
+ }<br> }<br>
+ <span class="keyword">return </span>canResize;<br> }<br>
+ }<br></p>
+ </div>
</div>
-<hr>
- <a href="http://www.eclipse.org/legal/epl-v10.html" shape="rect">Copyright (c) SAP AG 2005, 2010.</a>
+<p> </p>
+<p>Additionally the feature provider has to deliver our newly created feature (overwrite
+the method
+<a href="../../../javadoc/org/eclipse/graphiti/features/IFeatureProvider.html#getResizeShapeFeature(org.eclipse.graphiti.features.context.IResizeShapeContext)">
+getResizeShapeFeature</a>).</p>
+<p>This implementation can be seen here:</p>
+<p> </p>
+<div class="literallayout">
+ <div class="incode">
+ <p class="code">@Override<br><span class="keyword">public </span>IResizeShapeFeature
+ getResizeShapeFeature(<br> IResizeShapeContext
+ context) {<br> Shape shape = context.getShape();<br>
+ Object bo = getBusinessObjectForPictogramElement(shape);<br>
+ <span class="keyword">if </span>(bo <span class="keyword">instanceof</span>
+ EClass) {<br>
+ <span class="keyword">return new</span> TutorialResizeEClassFeature(this);<br>
+ }<br> <span class="keyword">return super</span>.getResizeShapeFeature(context);<br>
+ }<br></p>
+ </div>
+</div>
+<p> </p>
+<h2>Test: Resize EClass Is Restricted</h2>
+<p>Now start the editor again and test it: Just create a EClass whose name is only
+one character long. This EClass can no longer be resized, because on selection the
+resize-handles do not appear any more. For EClasses whose name has more than one
+character the resize should still work.</p>
</body>