| /******************************************************************************* |
| * Copyright (c) 2000, 2006 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: |
| * Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation |
| * (report 36180: Callers/Callees view) |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.viewsupport; |
| |
| import java.util.List; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Control; |
| import org.eclipse.swt.widgets.Menu; |
| import org.eclipse.swt.widgets.MenuItem; |
| |
| import org.eclipse.jface.action.Action; |
| import org.eclipse.jface.action.ActionContributionItem; |
| import org.eclipse.jface.action.IMenuCreator; |
| import org.eclipse.jface.util.Assert; |
| |
| /*package*/ class HistoryDropDownAction extends Action { |
| |
| private class HistoryAction extends Action { |
| private final Object fElement; |
| |
| public HistoryAction(Object element, int accelerator) { |
| super("", AS_RADIO_BUTTON); //$NON-NLS-1$ |
| Assert.isNotNull(element); |
| fElement= element; |
| |
| String label= fHistory.getText(element); |
| if (accelerator < 10) { |
| //add the numerical accelerator |
| label= new StringBuffer().append('&').append(accelerator).append(' ').append(label).toString(); |
| } |
| |
| setText(label); |
| setImageDescriptor(fHistory.getImageDescriptor(element)); |
| } |
| |
| public void run() { |
| fHistory.setActiveEntry(fElement); |
| } |
| } |
| |
| private class HistoryMenuCreator implements IMenuCreator { |
| |
| public Menu getMenu(Menu parent) { |
| return null; |
| } |
| |
| public Menu getMenu(Control parent) { |
| if (fMenu != null) { |
| fMenu.dispose(); |
| } |
| fMenu= new Menu(parent); |
| |
| List entries= fHistory.getHistoryEntries(); |
| boolean checkOthers= addEntryMenuItems(entries); |
| |
| if (entries.size() > 0) { |
| new MenuItem(fMenu, SWT.SEPARATOR); |
| } |
| |
| Action others= new HistoryListAction(fHistory); |
| others.setChecked(checkOthers); |
| addActionToMenu(fMenu, others); |
| |
| Action clearAction= fHistory.getClearAction(); |
| if (clearAction != null) { |
| addActionToMenu(fMenu, clearAction); |
| } |
| |
| return fMenu; |
| } |
| |
| private boolean addEntryMenuItems(List entries) { |
| if (entries.isEmpty()) { |
| return false; |
| } |
| |
| boolean checkOthers= true; |
| int min= Math.min(entries.size(), RESULTS_IN_DROP_DOWN); |
| for (int i= 0; i < min; i++) { |
| Object entry= entries.get(i); |
| HistoryAction action= new HistoryAction(entry, i + 1); |
| boolean check= entry.equals(fHistory.getCurrentEntry()); |
| action.setChecked(check); |
| if (check) |
| checkOthers= false; |
| addActionToMenu(fMenu, action); |
| } |
| return checkOthers; |
| } |
| |
| private void addActionToMenu(Menu parent, Action action) { |
| ActionContributionItem item= new ActionContributionItem(action); |
| item.fill(parent, -1); |
| } |
| |
| public void dispose() { |
| fHistory= null; |
| |
| if (fMenu != null) { |
| fMenu.dispose(); |
| fMenu= null; |
| } |
| } |
| } |
| |
| public static final int RESULTS_IN_DROP_DOWN= 10; |
| |
| private ViewHistory fHistory; |
| private Menu fMenu; |
| |
| public HistoryDropDownAction(ViewHistory history) { |
| fHistory= history; |
| fMenu= null; |
| setMenuCreator(new HistoryMenuCreator()); |
| fHistory.configureHistoryDropDownAction(this); |
| } |
| |
| public void run() { |
| new HistoryListAction(fHistory).run(); |
| } |
| } |