Case Study: adding data and statistics

[ifi-stolz-refaktor.git] / case-study / jdt-before / ui / org / eclipse / jdt / internal / ui / actions / NewWizardsActionGroup.java

diff --git a/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/actions/NewWizardsActionGroup.java b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/actions/NewWizardsActionGroup.java
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+/*******************************************************************************
+ * Copyright (c) 2000, 2011 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.jdt.internal.ui.actions;
+
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.core.resources.IResource;
+
+import org.eclipse.jface.action.IMenuManager;
+import org.eclipse.jface.action.MenuManager;
+import org.eclipse.jface.viewers.ISelection;
+import org.eclipse.jface.viewers.IStructuredSelection;
+
+import org.eclipse.ui.IWorkbenchSite;
+import org.eclipse.ui.IWorkingSet;
+import org.eclipse.ui.actions.ActionGroup;
+import org.eclipse.ui.actions.NewWizardMenu;
+
+import org.eclipse.jdt.core.IJavaElement;
+
+import org.eclipse.jdt.ui.IContextMenuConstants;
+
+import org.eclipse.jdt.internal.ui.workingsets.IWorkingSetIDs;
+
+
+/**
+ * Action group that adds the 'new' menu to a context menu.
+ * <p>
+ * This class may be instantiated; it is not intended to be subclassed.
+ * </p>
+ *
+ * @since 2.1
+ */
+public class NewWizardsActionGroup extends ActionGroup {
+
+       private IWorkbenchSite fSite;
+
+       /**
+        * Creates a new <code>NewWizardsActionGroup</code>. The group requires
+        * that the selection provided by the part's selection provider is of type <code>
+        * org.eclipse.jface.viewers.IStructuredSelection</code>.
+        *
+        * @param site the view part that owns this action group
+        */
+       public NewWizardsActionGroup(IWorkbenchSite site) {
+               fSite= site;
+       }
+
+
+       /* (non-Javadoc)
+        * Method declared in ActionGroup
+        */
+       @Override
+       public void fillContextMenu(IMenuManager menu) {
+               super.fillContextMenu(menu);
+
+               ISelection selection= getContext().getSelection();
+               if (selection instanceof IStructuredSelection) {
+                       if (canEnable((IStructuredSelection)selection)) {
+                       MenuManager newMenu = new MenuManager(ActionMessages.NewWizardsActionGroup_new);
+                       menu.appendToGroup(IContextMenuConstants.GROUP_NEW, newMenu);
+                       newMenu.add(new NewWizardMenu(fSite.getWorkbenchWindow()));
+                       }
+               }
+
+       }
+
+       private boolean canEnable(IStructuredSelection sel) {
+               if (sel.size() == 0)
+                       return true;
+
+               List<?> list= sel.toList();
+               for (Iterator<?> iterator= list.iterator(); iterator.hasNext();) {
+                       if (!isNewTarget(iterator.next()))
+                               return false;
+               }
+
+               return true;
+       }
+
+       private boolean isNewTarget(Object element) {
+               if (element == null)
+                       return true;
+               if (element instanceof IResource) {
+                       return true;
+               }
+               if (element instanceof IJavaElement) {
+                       int type= ((IJavaElement)element).getElementType();
+                       return type == IJavaElement.JAVA_PROJECT ||
+                               type == IJavaElement.PACKAGE_FRAGMENT_ROOT ||
+                               type == IJavaElement.PACKAGE_FRAGMENT ||
+                               type == IJavaElement.COMPILATION_UNIT ||
+                               type == IJavaElement.TYPE;
+               }
+               if (element instanceof IWorkingSet) {
+                       String workingSetId= ((IWorkingSet)element).getId();
+                       return
+                               IWorkingSetIDs.JAVA.equals(workingSetId) ||
+                               IWorkingSetIDs.RESOURCE.equals(workingSetId) ||
+                               IWorkingSetIDs.OTHERS.equals(workingSetId);
+               }
+               return false;
+       }
+
+}