Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.ui / src / org / simantics / ui / workbench / PerspectiveContextActivator.java

diff --git a/bundles/org.simantics.ui/src/org/simantics/ui/workbench/PerspectiveContextActivator.java b/bundles/org.simantics.ui/src/org/simantics/ui/workbench/PerspectiveContextActivator.java
new file mode 100644 (file)
index 0000000..b3ee4b2
--- /dev/null
+++ b/bundles/org.simantics.ui/src/org/simantics/ui/workbench/PerspectiveContextActivator.java
@@ -0,0 +1,179 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.ui.workbench;\r
+\r
+import java.util.List;\r
+\r
+import org.eclipse.ui.IPerspectiveDescriptor;\r
+import org.eclipse.ui.IPerspectiveListener4;\r
+import org.eclipse.ui.IWindowListener;\r
+import org.eclipse.ui.IWorkbenchPage;\r
+import org.eclipse.ui.IWorkbenchPartReference;\r
+import org.eclipse.ui.IWorkbenchWindow;\r
+import org.eclipse.ui.PlatformUI;\r
+import org.eclipse.ui.contexts.IContextActivation;\r
+import org.eclipse.ui.contexts.IContextService;\r
+import org.simantics.utils.datastructures.MapList;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class PerspectiveContextActivator implements IPerspectiveListener4, IWindowListener {\r
+\r
+    private IWorkbenchWindow                    activeWindow;\r
+\r
+    private String                              oldPerspective;\r
+\r
+    private MapList<String, IContextActivation> activations = new MapList<String, IContextActivation>();\r
+\r
+\r
+    public PerspectiveContextActivator() {\r
+        PlatformUI.getWorkbench().addWindowListener(this);\r
+    }\r
+\r
+    public void dispose() {\r
+        PlatformUI.getWorkbench().removeWindowListener(this);\r
+    }\r
+\r
+    //------------------------------------------------------------------------\r
+    // IPerspectiveListener4\r
+    //------------------------------------------------------------------------\r
+\r
+    @Override\r
+    public void perspectivePreDeactivate(IWorkbenchPage page, IPerspectiveDescriptor perspective) {\r
+    }\r
+\r
+    @Override\r
+    public void perspectiveClosed(IWorkbenchPage page, IPerspectiveDescriptor perspective) {\r
+    }\r
+\r
+    @Override\r
+    public void perspectiveDeactivated(IWorkbenchPage page, IPerspectiveDescriptor perspective) {\r
+    }\r
+\r
+    @Override\r
+    public void perspectiveOpened(IWorkbenchPage page, IPerspectiveDescriptor perspective) {\r
+    }\r
+\r
+    @Override\r
+    public void perspectiveSavedAs(IWorkbenchPage page, IPerspectiveDescriptor oldPerspective,\r
+            IPerspectiveDescriptor newPerspective) {\r
+    }\r
+\r
+    @Override\r
+    public void perspectiveChanged(IWorkbenchPage page, IPerspectiveDescriptor perspective,\r
+            IWorkbenchPartReference partRef, String changeId) {\r
+        // See IWorkbenchPage.CHANGED_* constants for change id's.\r
+    }\r
+\r
+    @Override\r
+    public void perspectiveActivated(IWorkbenchPage page, IPerspectiveDescriptor perspective) {\r
+        activatePerspective(perspective.getId());\r
+    }\r
+\r
+    @Override\r
+    public void perspectiveChanged(IWorkbenchPage page, IPerspectiveDescriptor perspective, String changeId) {\r
+        // See IWorkbenchPage.CHANGED_* constants for change id's.\r
+    }\r
+\r
+    //------------------------------------------------------------------------\r
+    // IWindowListener\r
+    //------------------------------------------------------------------------\r
+\r
+    @Override\r
+    public void windowActivated(IWorkbenchWindow window) {\r
+//        System.out.println("attaching to window: " + window);\r
+        attachToWindow(window);\r
+    }\r
+\r
+    @Override\r
+    public void windowClosed(IWorkbenchWindow window) {\r
+    }\r
+\r
+    @Override\r
+    public void windowDeactivated(IWorkbenchWindow window) {\r
+//        System.out.println("detaching from window: " + window);\r
+        detachFromWindow(window);\r
+    }\r
+\r
+    @Override\r
+    public void windowOpened(IWorkbenchWindow window) {\r
+    }\r
+\r
+    //------------------------------------------------------------------------\r
+    // UTILITIES\r
+    //------------------------------------------------------------------------\r
+\r
+    private void attachToWindow(IWorkbenchWindow window) {\r
+        activeWindow = window;\r
+        window.addPerspectiveListener(this);\r
+        IPerspectiveDescriptor perspective = window.getActivePage().getPerspective();\r
+        if (perspective != null) {\r
+            activatePerspective(perspective.getId());\r
+        }\r
+    }\r
+\r
+    private void detachFromWindow(IWorkbenchWindow window) {\r
+        window.removePerspectiveListener(this);\r
+    }\r
+\r
+    private IContextService getService(IWorkbenchWindow window) {\r
+        return (IContextService) window.getWorkbench().getService(IContextService.class);\r
+        //return (IContextService) window.getService(IContextService.class);\r
+    }\r
+\r
+    private IContextActivation activate(String ctx) {\r
+        IContextService contextService = getService(activeWindow);\r
+        if (contextService != null && ctx != null) {\r
+            IContextActivation act = contextService.activateContext(ctx);\r
+//            System.out.println("activating context: " + act);\r
+            return act;\r
+        }\r
+        return null;\r
+    }\r
+\r
+    private void deactivate(IContextActivation activation) {\r
+        IContextService contextService = getService(activeWindow);\r
+        if (contextService != null && activation != null) {\r
+//            System.out.println("deactivating context: " + activation);\r
+            contextService.deactivateContext(activation);\r
+        }\r
+    }\r
+\r
+    private void activatePerspective(String perspectiveId) {\r
+//        System.out.println("activating perspective: " + perspectiveId + " (old=" + oldPerspective + ")");\r
+\r
+        if (oldPerspective != null) {\r
+            if (oldPerspective.equals(perspectiveId))\r
+                return;\r
+\r
+            List<IContextActivation> acts = activations.getValues(oldPerspective);\r
+            if (acts != null) {\r
+                activations.remove(oldPerspective);\r
+                for (IContextActivation act : acts) {\r
+                    deactivate(act);\r
+                }\r
+            }\r
+        }\r
+        List<IPerspectiveContextExtension> exts = PerspectiveContextBindingManager.getInstance().getExtensions(perspectiveId);\r
+        for (IPerspectiveContextExtension ext : exts) {\r
+            for (String ctx : ext.getContextIds()) {\r
+                IContextActivation activation = activate(ctx);\r
+                if (activation != null) {\r
+                    activations.add(perspectiveId, activation);\r
+                }\r
+            }\r
+        }\r
+        oldPerspective = perspectiveId;\r
+    }\r
+\r
+}\r