case-study/jdt-before/ui/org/eclipse/jdt/internal/ui/actions/SelectAllAction.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2011 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.jdt.internal.ui.actions;
  12
  13 import java.util.ArrayList;
  14 import java.util.List;
  15
  16 import org.eclipse.swt.widgets.Tree;
  17 import org.eclipse.swt.widgets.TreeItem;
  18
  19 import org.eclipse.core.runtime.Assert;
  20
  21 import org.eclipse.jface.action.Action;
  22 import org.eclipse.jface.viewers.StructuredViewer;
  23 import org.eclipse.jface.viewers.TableViewer;
  24 import org.eclipse.jface.viewers.TreeViewer;
  25
  26 import org.eclipse.ui.PlatformUI;
  27
  28 import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
  29
  30 /**
  31  * This action selects all entries currently showing in view.
  32  */
  33 public class SelectAllAction extends Action {
  34
  35         private StructuredViewer fViewer;
  36
  37         /**
  38          * Creates the action for a TreeViewer
  39          *
  40          * @param viewer the tree viewer
  41          */
  42         public SelectAllAction(TreeViewer viewer) {
  43                 this((StructuredViewer) viewer);
  44         }
  45
  46         /**
  47          * Creates the action for a TableViewer
  48          *
  49          * @param viewer the table viewer
  50          */
  51         public SelectAllAction(TableViewer viewer) {
  52                 this((StructuredViewer) viewer);
  53         }
  54
  55         private SelectAllAction(StructuredViewer viewer) {
  56                 super("selectAll"); //$NON-NLS-1$
  57                 setText(ActionMessages.SelectAllAction_label);
  58                 setToolTipText(ActionMessages.SelectAllAction_tooltip);
  59                 PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.SELECT_ALL_ACTION);
  60                 Assert.isNotNull(viewer);
  61                 fViewer= viewer;
  62         }
  63
  64         private void collectExpandedAndVisible(TreeItem[] items, List<TreeItem> result) {
  65                 for (int i= 0; i < items.length; i++) {
  66                         TreeItem item= items[i];
  67                         if (item.getData() != null) {
  68                                 result.add(item);
  69                                 if (item.getExpanded()) {
  70                                         collectExpandedAndVisible(item.getItems(), result);
  71                                 }
  72                         }
  73                 }
  74         }
  75
  76         /**
  77          * Selects all resources in the view.
  78          */
  79         @Override
  80         public void run() {
  81                 if (fViewer instanceof TreeViewer) {
  82                         ArrayList<TreeItem> allVisible= new ArrayList<TreeItem>();
  83                         Tree tree= ((TreeViewer) fViewer).getTree();
  84                         collectExpandedAndVisible(tree.getItems(), allVisible);
  85                         tree.setSelection(allVisible.toArray(new TreeItem[allVisible.size()]));
  86                         fViewer.setSelection(fViewer.getSelection());
  87                 } else if (fViewer instanceof TableViewer) {
  88                         ((TableViewer) fViewer).getTable().selectAll();
  89                         // force viewer selection change
  90                         fViewer.setSelection(fViewer.getSelection());
  91                 }
  92         }
  93 }