Case Study: adding data and statistics

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

diff --git a/case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/browsing/PackagesViewTreeViewer.java b/case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/browsing/PackagesViewTreeViewer.java
new file mode 100644 (file)
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--- /dev/null
+++ b/case-study/jdt-after/ui/org/eclipse/jdt/internal/ui/browsing/PackagesViewTreeViewer.java
@@ -0,0 +1,131 @@
+/*******************************************************************************
+ * 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.browsing;
+
+import java.util.List;
+
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Item;
+import org.eclipse.swt.widgets.Widget;
+
+import org.eclipse.jface.viewers.ViewerFilter;
+
+import org.eclipse.jdt.core.IPackageFragment;
+import org.eclipse.jdt.core.JavaModelException;
+
+import org.eclipse.jdt.internal.ui.JavaPlugin;
+import org.eclipse.jdt.internal.ui.viewsupport.ProblemTreeViewer;
+
+/**
+ * Special problem tree viewer to handle logical packages.
+ */
+public class PackagesViewTreeViewer extends ProblemTreeViewer implements IPackagesViewViewer{
+
+       public PackagesViewTreeViewer(Composite parent, int style) {
+               super(parent, style);
+       }
+
+       /*
+        * @see org.eclipse.jface.viewers.StructuredViewer#mapElement(java.lang.Object, org.eclipse.swt.widgets.Widget)
+        */
+       @Override
+       public void mapElement(Object element, Widget item) {
+               if (element instanceof LogicalPackage && item instanceof Item) {
+                       LogicalPackage cp= (LogicalPackage) element;
+                       IPackageFragment[] fragments= cp.getFragments();
+                       for (int i= 0; i < fragments.length; i++) {
+                               IPackageFragment fragment= fragments[i];
+                               fResourceToItemsMapper.addToMap(fragment, (Item) item);
+                       }
+               }
+               super.mapElement(element, item);
+       }
+
+       /*
+        * @see org.eclipse.jface.viewers.StructuredViewer#unmapElement(java.lang.Object, org.eclipse.swt.widgets.Widget)
+        */
+       @Override
+       public void unmapElement(Object element, Widget item) {
+
+               if (element instanceof LogicalPackage && item instanceof Item) {
+                       LogicalPackage cp= (LogicalPackage) element;
+                       IPackageFragment[] fragments= cp.getFragments();
+                       for (int i= 0; i < fragments.length; i++) {
+                               IPackageFragment fragment= fragments[i];
+                               fResourceToItemsMapper.removeFromMap((Object)fragment, (Item)item);
+                       }
+               }
+               super.unmapElement(element, item);
+       }
+
+       /* (non-Javadoc)
+        * @see org.eclipse.jdt.internal.ui.viewsupport.ProblemTreeViewer#isFiltered(java.lang.Object, java.lang.Object, org.eclipse.jface.viewers.ViewerFilter[])
+        */
+       @Override
+       protected boolean isFiltered(Object object, Object parent, ViewerFilter[] filters) {
+               boolean res= super.isFiltered(object, parent, filters);
+               if (res && isEssential(object)) {
+                       return false;
+               }
+               return res;
+       }
+
+       private boolean isEssential(Object object) {
+               try {
+                       if (object instanceof IPackageFragment) {
+                               IPackageFragment fragment = (IPackageFragment) object;
+                               if (!fragment.isDefaultPackage() && fragment.hasSubpackages()) {
+                                       return hasFilteredChildren(fragment);
+                               }
+                       } else if (object instanceof LogicalPackage) {
+                               LogicalPackage logicalPackage= (LogicalPackage) object;
+                               if (!logicalPackage.isDefaultPackage() && logicalPackage.hasSubpackages()) {
+                                       return !hasFilteredChildren(object);
+                               }
+                       }
+               } catch (JavaModelException e) {
+                       JavaPlugin.log(e);
+               }
+               return false;
+       }
+
+       // --------- see IPackagesViewViewer ----------
+
+       @Override
+       public Widget doFindItem(Object element) {
+               return super.doFindItem(element);
+       }
+
+       @Override
+       public Widget doFindInputItem(Object element) {
+               return super.doFindInputItem(element);
+       }
+
+       @Override
+       public List<?> getSelectionFromWidget() {
+               return super.getSelectionFromWidget();
+       }
+
+       @Override
+       public void doUpdateItem(Widget item, Object element, boolean fullMap){
+               super.doUpdateItem(item, element, fullMap);
+       }
+
+       @Override
+       public void internalRefresh(Object element){
+               super.internalRefresh(element);
+       }
+
+       @Override
+       public void setSelectionToWidget(List l, boolean reveal){
+               super.setSelectionToWidget(l, reveal);
+       }
+}