/*******************************************************************************
 * Copyright (c) 2004 - 2005 University Of British Columbia 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:
 *     University Of British Columbia - initial API and implementation
 *******************************************************************************/
/*
 * Created on Jul 27, 2004
  */
package org.eclipse.mylyn.java.ui.actions;

import org.eclipse.jface.action.Action;

import org.eclipse.mylyn.core.MylarPlugin;
import org.eclipse.mylyn.java.ui.views.MylarPackageExplorer;
import org.eclipse.mylyn.tasklist.MylarImages;
 
/**
 * @author Mik Kersten
 */
public class ToggleAutoManagerExplorerAction extends Action {
	
    public static final String PREF_ID = "org.eclipse.mylyn.ui.explorer.manage.isChecked";
    
    private MylarPackageExplorer explorer;
    
	public ToggleAutoManagerExplorerAction(MylarPackageExplorer explorer) {
		super();
        this.explorer = explorer;
		setText("DoI tree management"); //$NON-NLS-1$
		setImageDescriptor(MylarImages.AUTO_EXPAND);	
		setToolTipText("Degree of interest tree management"); 
		
		boolean checked= ContextCore.getPreferenceStore().getBoolean(PREF_ID); 
		valueChanged(checked, false);
	}
	
	public void run() {
		valueChanged(isChecked(), true);
	}
	
	private void valueChanged(final boolean on, boolean store) {
		setChecked(on);
		if (store) ContextCore.getPreferenceStore().setValue(PREF_ID, on); //$NON-NLS-1$
		autoExpand(on);
//        MonitorPlugin.log(this, getText() + " set to: " + on);
	}
	
	public void autoExpand(boolean on) {
	    explorer.getDoiFilter().setFilterUninterestingEnabled(on);
        explorer.setAutoExpandModeEnabled(on);
        explorer.getTreeViewer().refresh();
        if (on) explorer.getTreeViewer().expandAll();
	} 
}