Case Study: adding data and statistics

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

diff --git a/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/typehierarchy/AbstractHierarchyViewerSorter.java b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/typehierarchy/AbstractHierarchyViewerSorter.java
new file mode 100644 (file)
index 0000000..f55ea38
--- /dev/null
+++ b/case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/typehierarchy/AbstractHierarchyViewerSorter.java
@@ -0,0 +1,175 @@
+/*******************************************************************************
+ * 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.typehierarchy;
+
+import org.eclipse.jface.viewers.Viewer;
+import org.eclipse.jface.viewers.ViewerComparator;
+
+import org.eclipse.jdt.core.Flags;
+import org.eclipse.jdt.core.IMethod;
+import org.eclipse.jdt.core.IType;
+import org.eclipse.jdt.core.ITypeHierarchy;
+import org.eclipse.jdt.core.JavaModelException;
+
+import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
+import org.eclipse.jdt.internal.corext.util.MethodOverrideTester;
+
+import org.eclipse.jdt.ui.JavaElementComparator;
+
+import org.eclipse.jdt.internal.ui.viewsupport.SourcePositionComparator;
+
+/**
+  */
+public abstract class AbstractHierarchyViewerSorter extends ViewerComparator {
+
+       private static final int OTHER= 1;
+       private static final int CLASS= 2;
+       private static final int INTERFACE= 3;
+       private static final int ANONYM= 4;
+
+       private JavaElementComparator fNormalSorter;
+       private SourcePositionComparator fSourcePositonSorter;
+
+       public AbstractHierarchyViewerSorter() {
+               fNormalSorter= new JavaElementComparator();
+               fSourcePositonSorter= new SourcePositionComparator();
+       }
+
+       protected abstract ITypeHierarchy getHierarchy(IType type);
+       public abstract boolean isSortByDefiningType();
+       public abstract boolean isSortAlphabetically();
+
+
+       protected int getTypeFlags(IType type) throws JavaModelException {
+               return type.getFlags();
+       }
+
+       /* (non-Javadoc)
+        * @see org.eclipse.jface.viewers.ViewerSorter#category(java.lang.Object)
+        */
+       @Override
+       public int category(Object element) {
+               if (element instanceof IType) {
+                       IType type= (IType) element;
+                       if (type.getElementName().length() == 0) {
+                               return ANONYM;
+                       }
+                       try {
+                               int flags= getTypeFlags(type);
+                               if (Flags.isInterface(flags)) {
+                                       return INTERFACE;
+                               } else {
+                                       return CLASS;
+                               }
+                       } catch (JavaModelException e) {
+                               // ignore
+                       }
+               }
+               return OTHER;
+       }
+
+       /* (non-Javadoc)
+        * @see org.eclipse.jface.viewers.ViewerSorter#compare(null, null, null)
+        */
+       @Override
+       public int compare(Viewer viewer, Object e1, Object e2) {
+               if (!isSortAlphabetically() && !isSortByDefiningType()) {
+                       return fSourcePositonSorter.compare(viewer, e1, e2);
+               }
+
+               int cat1= category(e1);
+               int cat2= category(e2);
+
+               if (cat1 != cat2)
+                       return cat1 - cat2;
+
+               if (cat1 == OTHER) { // method or field
+                       if (isSortByDefiningType()) {
+                               try {
+                                       IType def1= (e1 instanceof IMethod) ? getDefiningType((IMethod) e1) : null;
+                                       IType def2= (e2 instanceof IMethod) ? getDefiningType((IMethod) e2) : null;
+                                       if (def1 != null) {
+                                               if (def2 != null) {
+                                                       if (!def2.equals(def1)) {
+                                                               return compareInHierarchy(def1, def2);
+                                                       }
+                                               } else {
+                                                       return -1;
+                                               }
+                                       } else {
+                                               if (def2 != null) {
+                                                       return 1;
+                                               }
+                                       }
+                               } catch (JavaModelException e) {
+                                       // ignore, default to normal comparison
+                               }
+                       }
+                       if (isSortAlphabetically()) {
+                               return fNormalSorter.compare(viewer, e1, e2); // use appearance pref page settings
+                       }
+                       return 0;
+               } else if (cat1 == ANONYM) {
+                       return 0;
+               } else if (isSortAlphabetically()) {
+                       String name1= ((IType) e1).getElementName();
+                       String name2= ((IType) e2).getElementName();
+                       return getComparator().compare(name1, name2);
+               }
+               return 0;
+       }
+
+       private IType getDefiningType(IMethod method) throws JavaModelException {
+               int flags= method.getFlags();
+               if (Flags.isPrivate(flags) || Flags.isStatic(flags) || method.isConstructor()) {
+                       return null;
+               }
+
+               IType declaringType= method.getDeclaringType();
+               ITypeHierarchy hierarchy= getHierarchy(declaringType);
+               if (hierarchy != null) {
+                       MethodOverrideTester tester= new MethodOverrideTester(declaringType, hierarchy);
+                       IMethod res= tester.findDeclaringMethod(method, true);
+                       if (res != null) {
+                               return res.getDeclaringType();
+                       }
+               }
+               return null;
+       }
+
+
+       private int compareInHierarchy(IType def1, IType def2) {
+               if (JavaModelUtil.isSuperType(getHierarchy(def1), def2, def1)) {
+                       return 1;
+               } else if (JavaModelUtil.isSuperType(getHierarchy(def2), def1, def2)) {
+                       return -1;
+               }
+               // interfaces after classes
+               try {
+                       int flags1= getTypeFlags(def1);
+                       int flags2= getTypeFlags(def2);
+                       if (Flags.isInterface(flags1)) {
+                               if (!Flags.isInterface(flags2)) {
+                                       return 1;
+                               }
+                       } else if (Flags.isInterface(flags2)) {
+                               return -1;
+                       }
+               } catch (JavaModelException e) {
+                       // ignore
+               }
+               String name1= def1.getElementName();
+               String name2= def2.getElementName();
+
+               return getComparator().compare(name1, name2);
+       }
+
+}