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/*******************************************************************************
* 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:
* IBM Corporation - initial API and implementation
* Markus Schorn (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.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.cdt.core.model.ICElement;
import org.eclipse.cdt.internal.ui.CPluginImages;
public class CHHistoryDropDownAction extends Action implements IMenuCreator {
public static class ClearHistoryAction extends Action {
private CHViewPart fView;
public ClearHistoryAction(CHViewPart view) {
super(CHMessages.CHHistoryDropDownAction_ClearHistory_label);
fView= view;
}
@Override
public void run() {
fView.setHistoryEntries(new ICElement[0]);
fView.setInput(null);
}
}
public static final int RESULTS_IN_DROP_DOWN= 10;
private CHViewPart fHierarchyView;
private Menu fMenu;
public CHHistoryDropDownAction(CHViewPart view) {
fHierarchyView= view;
fMenu= null;
setToolTipText(CHMessages.CHHistoryDropDownAction_ShowHistoryList_tooltip);
CPluginImages.setImageDescriptors(this, CPluginImages.T_LCL, "history_list.gif"); //$NON-NLS-1$
setMenuCreator(this);
}
public void dispose() {
// action is reused, can be called several times.
if (fMenu != null) {
fMenu.dispose();
fMenu= null;
}
}
public Menu getMenu(Menu parent) {
return null;
}
public Menu getMenu(Control parent) {
if (fMenu != null) {
fMenu.dispose();
}
fMenu= new Menu(parent);
ICElement[] elements= fHierarchyView.getHistoryEntries();
addEntries(fMenu, elements);
new MenuItem(fMenu, SWT.SEPARATOR);
addActionToMenu(fMenu, new CHHistoryListAction(fHierarchyView));
addActionToMenu(fMenu, new ClearHistoryAction(fHierarchyView));
return fMenu;
}
private boolean addEntries(Menu menu, ICElement[] elements) {
boolean checked= false;
int min= Math.min(elements.length, RESULTS_IN_DROP_DOWN);
for (int i= 0; i < min; i++) {
CHHistoryAction action= new CHHistoryAction(fHierarchyView, elements[i]);
action.setChecked(elements[i].equals(fHierarchyView.getInput()));
checked= checked || action.isChecked();
addActionToMenu(menu, action);
}
return checked;
}
protected void addActionToMenu(Menu parent, Action action) {
ActionContributionItem item= new ActionContributionItem(action);
item.fill(parent, -1);
}
@Override
public void run() {
(new CHHistoryListAction(fHierarchyView)).run();
}
}
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