Case Study: adding data and statistics

[ifi-stolz-refaktor.git] / case-study / jdt-after / ui / org / eclipse / jdt / internal / ui / filters / NoPackageContainingFoldersFilter.java

diff --git a/case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/filters/NoPackageContainingFoldersFilter.java b/case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/filters/NoPackageContainingFoldersFilter.java
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+++ b/case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/filters/NoPackageContainingFoldersFilter.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.filters;
+
+import org.eclipse.core.runtime.CoreException;
+
+import org.eclipse.core.resources.IFolder;
+import org.eclipse.core.resources.IResource;
+
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.jface.viewers.ViewerFilter;
+
+import org.eclipse.jdt.core.IJavaElement;
+import org.eclipse.jdt.core.IPackageFragment;
+import org.eclipse.jdt.core.JavaCore;
+
+public class NoPackageContainingFoldersFilter extends ViewerFilter {
+
+       /*
+        * @see ViewerFilter
+        */
+       @Override
+       public boolean select(Viewer viewer, Object parent, Object element) {
+               if (element instanceof IFolder) {
+                       try {
+                               if (containsPackage((IFolder)element))
+                                       return true;
+                               else
+                                       return false;
+                       } catch (CoreException e) {
+                               return true;
+                       }
+               }
+
+               return true;
+       }
+
+       private boolean containsPackage(IFolder folder) throws CoreException {
+               IJavaElement element= JavaCore.create(folder);
+               if (element instanceof IPackageFragment)
+                       return true;
+               IResource[] resources= folder.members();
+               for (int i= 0; i < resources.length; i++) {
+                       if (resources[i] instanceof IFolder && containsPackage((IFolder)resources[i]))
+                               return true;
+               }
+               return false;
+       }
+
+}