Case Study: adding data and statistics

[ifi-stolz-refaktor.git] / case-study / jdt-after / ui / org / eclipse / jdt / internal / ui / wizards / buildpaths / CPListElementSorter.java

diff --git a/case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/CPListElementSorter.java b/case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/CPListElementSorter.java
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+++ b/case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/CPListElementSorter.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.wizards.buildpaths;
+
+import org.eclipse.jface.viewers.ContentViewer;
+import org.eclipse.jface.viewers.IBaseLabelProvider;
+import org.eclipse.jface.viewers.ILabelProvider;
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.jface.viewers.ViewerComparator;
+
+import org.eclipse.jdt.core.IAccessRule;
+import org.eclipse.jdt.core.IClasspathEntry;
+
+public class CPListElementSorter extends ViewerComparator {
+
+       private static final int SOURCE= 0;
+       private static final int PROJECT= 1;
+       private static final int LIBRARY= 2;
+       private static final int VARIABLE= 3;
+       private static final int CONTAINER= 4;
+
+       private static final int ATTRIBUTE= 5;
+       private static final int CONTAINER_ENTRY= 6;
+
+       private static final int OTHER= 7;
+
+       /*
+        * @see ViewerSorter#category(Object)
+        */
+       @Override
+       public int category(Object obj) {
+               if (obj instanceof CPListElement) {
+                       CPListElement element= (CPListElement) obj;
+                       if (element.getParentContainer() != null) {
+                               return CONTAINER_ENTRY;
+                       }
+                       switch (element.getEntryKind()) {
+                       case IClasspathEntry.CPE_LIBRARY:
+                               return LIBRARY;
+                       case IClasspathEntry.CPE_PROJECT:
+                               return PROJECT;
+                       case IClasspathEntry.CPE_SOURCE:
+                               return SOURCE;
+                       case IClasspathEntry.CPE_VARIABLE:
+                               return VARIABLE;
+                       case IClasspathEntry.CPE_CONTAINER:
+                               return CONTAINER;
+                       }
+               } else if (obj instanceof CPListElementAttribute) {
+                       return ATTRIBUTE;
+               } else if (obj instanceof IAccessRule) {
+                       return ATTRIBUTE;
+               }
+               return OTHER;
+       }
+
+       /* (non-Javadoc)
+        * @see org.eclipse.jface.viewers.ViewerSorter#compare(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
+        */
+       @Override
+       public int compare(Viewer viewer, Object e1, Object e2) {
+
+        int cat1 = category(e1);
+        int cat2 = category(e2);
+
+        if (cat1 != cat2)
+            return cat1 - cat2;
+
+        if (cat1 == ATTRIBUTE || cat1 == CONTAINER_ENTRY) {
+               return 0; // do not sort attributes or container entries
+        }
+
+               if (viewer instanceof ContentViewer) {
+                       IBaseLabelProvider prov = ((ContentViewer) viewer).getLabelProvider();
+            if (prov instanceof ILabelProvider) {
+                ILabelProvider lprov = (ILabelProvider) prov;
+                String name1 = lprov.getText(e1);
+                String name2 = lprov.getText(e2);
+                return getComparator().compare(name1, name2);
+            }
+               }
+               return 0;
+       }
+
+
+}