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
9 * IBM Corporation - initial API and implementation
10 *******************************************************************************/
11 package org.eclipse.jdt.internal.ui.typehierarchy;
13 import org.eclipse.core.runtime.Assert;
15 import org.eclipse.jface.action.Action;
16 import org.eclipse.jface.resource.ImageDescriptor;
17 import org.eclipse.jface.viewers.StyledString;
19 import org.eclipse.ui.PlatformUI;
21 import org.eclipse.jdt.core.IJavaElement;
23 import org.eclipse.jdt.internal.corext.util.Messages;
25 import org.eclipse.jdt.ui.JavaElementLabels;
27 import org.eclipse.jdt.internal.ui.IJavaHelpContextIds;
28 import org.eclipse.jdt.internal.ui.viewsupport.JavaElementImageProvider;
31 * Action used for the type hierarchy forward / backward buttons
33 public class HistoryAction extends Action {
35 private TypeHierarchyViewPart fViewPart;
36 private IJavaElement[] fElements;
38 public HistoryAction(TypeHierarchyViewPart viewPart, IJavaElement[] elements) {
39 super("", AS_RADIO_BUTTON); //$NON-NLS-1$
43 String elementName= getElementLabel(elements);
45 setImageDescriptor(getImageDescriptor(elements[0]));
47 setDescription(Messages.format(TypeHierarchyMessages.HistoryAction_description, elementName));
48 setToolTipText(Messages.format(TypeHierarchyMessages.HistoryAction_tooltip, elementName));
49 PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.HISTORY_ACTION);
52 private ImageDescriptor getImageDescriptor(IJavaElement elem) {
53 JavaElementImageProvider imageProvider= new JavaElementImageProvider();
54 ImageDescriptor desc= imageProvider.getBaseImageDescriptor(elem, 0);
55 imageProvider.dispose();
64 fViewPart.gotoHistoryEntry(fElements);
68 * Fetches the label for the java element.
70 * @param element the java element
71 * @return the label for the java element
74 static StyledString getSingleElementLabel(IJavaElement element) {
75 return JavaElementLabels.getStyledElementLabel(element, JavaElementLabels.ALL_POST_QUALIFIED | JavaElementLabels.COLORIZE | JavaElementLabels.P_COMPRESSED);
79 * Fetches the label for all the java elements.
81 * @param elements the java elements
82 * @return the label for all the java elements
85 static String getElementLabel(IJavaElement[] elements) {
86 switch (elements.length) {
92 return Messages.format(TypeHierarchyMessages.HistoryAction_inputElements_1,
93 new String[] { getShortLabel(elements[0]) });
95 return Messages.format(TypeHierarchyMessages.HistoryAction_inputElements_2,
96 new String[] { getShortLabel(elements[0]), getShortLabel(elements[1]) });
98 return Messages.format(TypeHierarchyMessages.HistoryAction_inputElements_more,
99 new String[] { getShortLabel(elements[0]), getShortLabel(elements[1]), getShortLabel(elements[2]) });
104 * Fetches the short label for the java element.
106 * @param element the java element
107 * @return the short label for the java element
110 static String getShortLabel(IJavaElement element) {
111 return JavaElementLabels.getElementLabel(element, JavaElementLabels.ALL_DEFAULT | JavaElementLabels.ALL_POST_QUALIFIED | JavaElementLabels.P_COMPRESSED);