intial source from ttp://www.sf.net/projects/wdte

[phpeclipse.git] / archive / net.sourceforge.phpeclipse.css.ui / src / net / sourceforge / phpeclipse / css / ui / internal / outline / CssOutlineDoubleClickListener.java

diff --git a/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/outline/CssOutlineDoubleClickListener.java b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/outline/CssOutlineDoubleClickListener.java
new file mode 100644 (file)
index 0000000..3a599e5
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+++ b/archive/net.sourceforge.phpeclipse.css.ui/src/net/sourceforge/phpeclipse/css/ui/internal/outline/CssOutlineDoubleClickListener.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2003-2004 Christopher Lenz and others.
+ * All rights reserved. This program and the accompanying materials 
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ * 
+ * Contributors:
+ *     Christopher Lenz - initial API and implementation
+ * 
+ * $Id: CssOutlineDoubleClickListener.java,v 1.1 2004-09-02 18:11:49 jsurfer Exp $
+ */
+
+package net.sourceforge.phpeclipse.css.ui.internal.outline;
+
+import net.sourceforge.phpeclipse.css.core.model.IStyleRule;
+import net.sourceforge.phpeclipse.css.ui.CssUI;
+
+import org.eclipse.jface.viewers.DoubleClickEvent;
+import org.eclipse.jface.viewers.IDoubleClickListener;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+import org.eclipse.ui.IPageLayout;
+import org.eclipse.ui.IWorkbenchPage;
+import org.eclipse.ui.PartInitException;
+import org.eclipse.ui.views.contentoutline.ContentOutlinePage;
+
+/**
+ * A double click listener that is intended to be attached to an outline page
+ * displaying CSS elements. If a style rule is double clicked, it will attempt
+ * to show the standard properties view.
+ */
+public class CssOutlineDoubleClickListener implements IDoubleClickListener {
+
+       // Instance Variables ------------------------------------------------------
+
+       /**
+        * The associated content outline page.
+        */
+       private ContentOutlinePage outlinePage;
+
+       // Constructors ------------------------------------------------------------
+
+       /**
+        * Constructor.
+        * 
+        * @param outlinePage the associated outline page
+        */
+       public CssOutlineDoubleClickListener(ContentOutlinePage outlinePage) {
+               this.outlinePage = outlinePage;
+       }
+
+       // IDoubleClickListener Implementation -------------------------------------
+
+       /*
+        * @see IDoubleClickListener#doubleClick(DoubleClickEvent)
+        */
+       public void doubleClick(DoubleClickEvent event) {
+               Object selectedElement = getSelectedElement(event.getSelection());
+               if (selectedElement instanceof IStyleRule) {
+                       showPropertiesView();
+               }
+       }
+
+       // Private Methods ---------------------------------------------------------
+
+       /**
+        * Shows the properties view in the current workbench window.
+        */
+       private void showPropertiesView() {
+               IWorkbenchPage workbenchPage = outlinePage.getSite().getPage();
+               try {
+                       workbenchPage.showView(IPageLayout.ID_PROP_SHEET);
+               } catch (PartInitException e) {
+                       CssUI.log(
+                               "Could not show properties view", e); //$NON-NLS-1$
+               }
+       }
+
+       /**
+        * Finds the element that is selected. As this is a double click listener,
+        * only a single element can be selected at once.
+        * 
+        * @param selection the selection
+        * @return the selected element
+        */
+       private Object getSelectedElement(ISelection selection) {
+               Object element = null;
+               if (selection instanceof IStructuredSelection) {
+                       element = ((IStructuredSelection) selection).getFirstElement();
+               }
+               return element;
+       }
+
+}