bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/CoolItemToolBarManager.java

package org.eclipse.ui.internal;

/*
 * Copyright (c) 2002 IBM Corp.  All rights reserved.
 * This file is made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 */

import org.eclipse.jface.action.IContributionItem;
import org.eclipse.jface.action.ToolBarManager;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.*;

/**
 * CoolItemToolBarManager class
 */
public class CoolItemToolBarManager extends ToolBarManager {
	CoolBarManager parentManager;
	CoolBarContributionItem coolBarItem;
	
	public CoolItemToolBarManager(int style) {
		super(style);
	}
	public ToolBar createControl(Composite parent) {
		ToolBar tBar = super.createControl(parent);
		tBar.setMenu(parentManager.getCoolBarMenu());
		return tBar;
	}
	public void dispose() {
		// the toolbar menu is shared by all coolitems, so clear the
		// reference to the menu so that it does not get disposed of
		getControl().setMenu(null);
		super.dispose();
	}
	protected CoolBarContributionItem getCoolBarItem() {
		return coolBarItem;
	}
	protected CoolBarManager getParentManager() {
		return parentManager;
	}
	protected boolean isVisible() {
		if (coolBarItem == null) {
			return false;
		}
		return coolBarItem.isVisible();
	}
	protected void itemAdded(IContributionItem item) {
		super.itemAdded(item);
		update(true);
		parentManager.updateSizeFor(coolBarItem);
	}
	protected void itemRemoved(IContributionItem item) {
		super.itemRemoved(item);
		update(true);
		parentManager.updateSizeFor(coolBarItem);
	}
	protected void relayout(ToolBar toolBar, int oldCount, int newCount) {
		if (oldCount == newCount) return;
		CoolBar coolBar = (CoolBar)toolBar.getParent();
		CoolItem[] coolItems = coolBar.getItems();
		CoolItem coolItem = null;
		for (int i = 0; i < coolItems.length; i++) {	
			CoolItem item = coolItems[i];
			if (item.getControl() == toolBar) {
				coolItem = item;
				break;
			}						
		}
		// recompute preferred size so chevron will work correctly when
		// items are added/removed from the toolbar, don't set the size of
		// the coolItem since that would affect the position of other
		// coolItems on the toolbar
		if (coolItem != null) {
			Point size = toolBar.computeSize(SWT.DEFAULT, SWT.DEFAULT);
			Point coolSize = coolItem.computeSize (size.x, size.y);
			coolItem.setPreferredSize(coolSize);
		}
		coolBar.layout();
	} 
	protected void setCoolBarItem(CoolBarContributionItem coolBarItem) {
		this.coolBarItem = coolBarItem;
	}
	protected void setParentMgr(CoolBarManager parentManager) {
		this.parentManager = parentManager;
	}
	
	protected void setVisible(boolean set) {
		if (coolBarItem != null) {
			coolBarItem.setVisible(set);
		}
	}
	protected void setVisible(boolean set, boolean forceVisibility) {
		if (coolBarItem != null) {
			coolBarItem.setVisible(set, forceVisibility);
		}
	}
}