Selection changed listener added on plugin start up to filter Update context menu item.

Author: Layoric

src/ServiceStackEclipse/plugin.xml

@@ -17,25 +17,12 @@
                id="net.servicestack.eclipse.newAction">
          </action>
       </objectContribution>
-      <objectContribution
-      		adaptable="true"
-            objectClass="org.eclipse.core.resources.IFile"
-            id="net.servicestack.eclipse.updateReference">
-         <action
-               label="Update ServiceStack Reference"
-               class="net.servicestack.eclipse.popup.actions.UpdateReference"
-               menubarPath="additions"
-               enablesFor="1"
-               icon="icons/logo-16.png"
-               id="net.servicestack.eclipse.updateAction">
-         </action>
-      </objectContribution>
    </extension>
-   <!--<extension
+   <extension
          point="org.eclipse.ui.commands">
       <command
             id="net.servicestack.eclipse.commands.sampleCommand"
-            name="Add ServiceStack Reference...">
+            name="Update ServiceStack Reference">
       </command>
    </extension>
    <extension
@@ -59,11 +46,37 @@
       <menuContribution
             locationURI="popup:org.eclipse.jdt.ui.PackageExplorer">
          	<command
-                  commandId="net.servicestack.eclipse.commands.sampleCommand"
-                  id="net.servicestack.eclipse.menus.sampleCommand"
-                  mnemonic="S">
+                commandId="net.servicestack.eclipse.commands.sampleCommand"
+                icon="icons/logo-16.png"
+                id="net.servicestack.eclipse.menus.sampleCommand"
+                mnemonic="M">
+                <visibleWhen
+                  checkEnabled="true">
+               <with
+                     variable="net.servicestack.eclipse.sourceprovider.active">
+                  <equals
+                        value="ENABLED">
+                  </equals>
+               </with>
+            </visibleWhen>
             </command>
       </menuContribution>
-   </extension>-->
-
+   </extension>
+   <extension
+         point="org.eclipse.ui.services">
+      <sourceProvider
+            provider="net.servicestack.eclipse.handlers.UpdateCommandState">
+         <variable
+               name="net.servicestack.eclipse.handlers.active"
+               priorityLevel="workbench">
+         </variable>
+      </sourceProvider>
+   </extension>
+   <extension
+         id="net.servicetack.eclipse.startup"
+         point="org.eclipse.ui.startup">
+      <startup
+            class="net.servicestack.eclipse.startup.PluginStartup">
+      </startup>
+   </extension>
 </plugin>

src/ServiceStackEclipse/src/net/servicestack/eclipse/handlers/SampleHandler.java

@@ -5,6 +5,7 @@
 import org.eclipse.core.commands.ExecutionException;
 import org.eclipse.ui.IWorkbenchWindow;
 import org.eclipse.ui.handlers.HandlerUtil;
+import org.eclipse.ui.services.ISourceProviderService;
 import org.eclipse.jface.dialogs.MessageDialog;
 
 /**
@@ -24,12 +25,14 @@ public SampleHandler() {
 	 * from the application context.
 	 */
 	public Object execute(ExecutionEvent event) throws ExecutionException {
-		IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindowChecked(event);
-		MessageDialog.openInformation(
-				window.getShell(),
-				"Eclipse",
-				"Hello, Eclipse world");
-		return null;
+		// Get the source provider service
+	    ISourceProviderService sourceProviderService = (ISourceProviderService) HandlerUtil
+	        .getActiveWorkbenchWindow(event).getService(ISourceProviderService.class);
+	    // now get my service
+	    UpdateCommandState commandStateService = (UpdateCommandState) sourceProviderService
+	        .getSourceProvider(UpdateCommandState.MY_STATE);
+	    commandStateService.enabled = false;
+	    return null;
 	}
 
 

src/ServiceStackEclipse/src/net/servicestack/eclipse/handlers/UpdateCommandState.java

@@ -0,0 +1,34 @@
+package net.servicestack.eclipse.handlers;
+
+import java.awt.List;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.eclipse.ui.AbstractSourceProvider;
+
+public class UpdateCommandState extends AbstractSourceProvider {
+	public final static String MY_STATE = "net.servicestack.eclipse.handlers.active";
+	public final static String ENABLED = "ENABLED";
+	public final static String DISENABLED = "DISENABLED";
+	public boolean enabled = true;
+
+	@Override
+	public void dispose() {
+		// TODO Auto-generated method stub
+
+	}
+
+	@Override
+	public Map getCurrentState() {
+		Map map = new HashMap(1);
+	    String value = enabled ? ENABLED : DISENABLED;
+	    map.put(MY_STATE, value);
+	    return map;
+	}
+
+	@Override
+	public String[] getProvidedSourceNames() {
+		return new String[] { MY_STATE };
+	}
+
+}

src/ServiceStackEclipse/src/net/servicestack/eclipse/startup/PluginStartup.java

@@ -0,0 +1,69 @@
+package net.servicestack.eclipse.startup;
+
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.ui.ISelectionListener;
+import org.eclipse.ui.ISelectionService;
+import org.eclipse.ui.IStartup;
+import org.eclipse.ui.IWindowListener;
+import org.eclipse.ui.IWorkbench;
+import org.eclipse.ui.IWorkbenchPart;
+import org.eclipse.ui.IWorkbenchWindow;
+import org.eclipse.ui.PlatformUI;
+
+public class PluginStartup implements IStartup, ISelectionListener {
+
+	@Override
+    public void earlyStartup() {
+        final IWorkbench workbench = PlatformUI.getWorkbench();
+        workbench.addWindowListener(new IWindowListener() {
+
+            @Override
+            public void windowOpened(IWorkbenchWindow window) {
+                addSelectionListener(window);
+            }
+
+            @Override
+            public void windowClosed(IWorkbenchWindow window) {
+                removeSelectionListener(window);
+            }
+
+			@Override
+			public void windowActivated(IWorkbenchWindow window) {
+				// TODO Auto-generated method stub
+				
+			}
+
+			@Override
+			public void windowDeactivated(IWorkbenchWindow window) {
+				// TODO Auto-generated method stub
+				
+			}
+        });
+
+        workbench.getDisplay().asyncExec(new Runnable() {
+            public void run() {
+                for (IWorkbenchWindow window : workbench.getWorkbenchWindows()) {
+                    addSelectionListener(window);
+                }
+            }
+        });
+    }
+
+    private void addSelectionListener(IWorkbenchWindow window) {
+        if (window != null) {
+            window.getSelectionService().addSelectionListener("org.eclipse.jdt.ui.PackageExplorer", this);
+        }
+    }
+
+    private void removeSelectionListener(IWorkbenchWindow window) {
+        if (window != null) {
+            window.getSelectionService().removeSelectionListener("org.eclipse.jdt.ui.PackageExplorer", this);
+        }
+    }
+
+    @Override
+    public void selectionChanged(IWorkbenchPart part, ISelection selection) {
+        // TODO handle selection changes
+        System.out.println("selection changed");
+    }
+}