examples/org.eclipse.gmf.examples.eclipsecon.library/patch/14_LayoutProvider.txt

### Eclipse Workspace Patch 1.0
#P org.eclipse.gmf.examples.eclipsecon.library.diagram.custom
Index: plugin.xml
===================================================================
RCS file: /cvsroot/technology/org.eclipse.gmf/examples/org.eclipse.gmf.examples.eclipsecon.library.diagram.custom/plugin.xml,v
retrieving revision 1.2
diff -u -r1.2 plugin.xml
--- plugin.xml	17 Feb 2007 00:03:32 -0000	1.2
+++ plugin.xml	17 Feb 2007 00:31:59 -0000
@@ -30,4 +30,13 @@
          </Priority>
       </decoratorProvider>
    </extension>
+   <extension
+         point="org.eclipse.gmf.runtime.diagram.ui.layoutProviders">
+      <layoutProvider
+            class="org.eclipse.gmf.examples.eclipsecon.library.diagram.custom.provider.LibraryLayoutProvider">
+         <Priority
+               name="Medium">
+         </Priority>
+      </layoutProvider>
+   </extension>
 </plugin>
Index: src/org/eclipse/gmf/examples/eclipsecon/library/diagram/custom/provider/LibraryLayoutProvider.java
===================================================================
RCS file: src/org/eclipse/gmf/examples/eclipsecon/library/diagram/custom/provider/LibraryLayoutProvider.java
diff -N src/org/eclipse/gmf/examples/eclipsecon/library/diagram/custom/provider/LibraryLayoutProvider.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ src/org/eclipse/gmf/examples/eclipsecon/library/diagram/custom/provider/LibraryLayoutProvider.java	1 Jan 1970 00:00:00 -0000
@@ -0,0 +1,41 @@
+package org.eclipse.gmf.examples.eclipsecon.library.diagram.custom.provider;
+
+import java.util.Iterator;
+
+import org.eclipse.core.runtime.IAdaptable;
+import org.eclipse.gmf.runtime.common.core.service.IOperation;
+import org.eclipse.gmf.runtime.diagram.ui.providers.internal.RadialProvider;
+import org.eclipse.gmf.runtime.diagram.ui.services.layout.ILayoutNode;
+import org.eclipse.gmf.runtime.diagram.ui.services.layout.ILayoutNodeOperation;
+import org.eclipse.gmf.runtime.diagram.ui.services.layout.LayoutType;
+import org.eclipse.gmf.runtime.notation.Diagram;
+import org.eclipse.gmf.runtime.notation.View;
+
+
+public class LibraryLayoutProvider
+    extends RadialProvider {
+    
+    public boolean provides(IOperation operation) {
+        if (operation instanceof ILayoutNodeOperation) {
+            Iterator nodes = ((ILayoutNodeOperation) operation)
+                .getLayoutNodes().iterator();
+            if (nodes.hasNext()) {
+                View node = ((ILayoutNode) nodes.next()).getNode();
+                Diagram container = node.getDiagram();
+                // enabled only on the Library Diagram
+                if (container == null
+                    || !(container.getType().equals("Library07"))) 
+            return false;
+                    }
+             } else {
+                   return false;
+            }
+            IAdaptable layoutHint = ((ILayoutNodeOperation) operation)
+                   .getLayoutHint();
+            String layoutType = (String) layoutHint.getAdapter(String.class);
+         return LayoutType.DEFAULT.equals(layoutType);
+        }
+    
+
+
+}