/*******************************************************************************
* Copyright (c) 2000, 2008 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.wst.jsdt.internal.ui.callhierarchy;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.ActionContributionItem;
import org.eclipse.jface.action.IMenuCreator;
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.ui.PlatformUI;
import org.eclipse.wst.jsdt.core.IFunction;
import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
import org.eclipse.wst.jsdt.internal.ui.JavaPluginImages;
class HistoryDropDownAction extends Action implements IMenuCreator {
private static class ClearHistoryAction extends Action {
private CallHierarchyViewPart fView;
public ClearHistoryAction(CallHierarchyViewPart view) {
super(CallHierarchyMessages.HistoryDropDownAction_clearhistory_label);
fView= view;
}
public void run() {
fView.setHistoryEntries(new IFunction[0]);
fView.setMethod(null);
}
}
public static final int RESULTS_IN_DROP_DOWN = 10;
private CallHierarchyViewPart fView;
private Menu fMenu;
public HistoryDropDownAction(CallHierarchyViewPart view) {
fView = view;
fMenu = null;
setToolTipText(CallHierarchyMessages.HistoryDropDownAction_tooltip);
JavaPluginImages.setLocalImageDescriptors(this, "history_list.gif"); //$NON-NLS-1$
PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.CALL_HIERARCHY_HISTORY_DROP_DOWN_ACTION);
setMenuCreator(this);
}
public Menu getMenu(Menu parent) {
return null;
}
public Menu getMenu(Control parent) {
if (fMenu != null) {
fMenu.dispose();
}
fMenu= new Menu(parent);
IFunction[] elements= fView.getHistoryEntries();
addEntries(fMenu, elements);
new MenuItem(fMenu, SWT.SEPARATOR);
addActionToMenu(fMenu, new HistoryListAction(fView));
addActionToMenu(fMenu, new ClearHistoryAction(fView));
return fMenu;
}
public void dispose() {
fView = null;
if (fMenu != null) {
fMenu.dispose();
fMenu = null;
}
}
protected void addActionToMenu(Menu parent, Action action) {
ActionContributionItem item = new ActionContributionItem(action);
item.fill(parent, -1);
}
private boolean addEntries(Menu menu, IFunction[] elements) {
boolean checked = false;
int min = Math.min(elements.length, RESULTS_IN_DROP_DOWN);
for (int i = 0; i < min; i++) {
HistoryAction action = new HistoryAction(fView, elements[i]);
action.setChecked(elements[i].equals(fView.getMethod()));
checked = checked || action.isChecked();
addActionToMenu(menu, action);
}
return checked;
}
public void run() {
(new HistoryListAction(fView)).run();
}
}