/**
    * Copyright 2010 The Kuali Foundation Licensed under the
    * Educational Community License, Version 2.0 (the "License"); you may
    * not use this file except in compliance with the License. You may
    * obtain a copy of the License at
    *
    * http://www.osedu.org/licenses/ECL-2.0
    *
    * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an "AS IS"
   * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
   * or implied. See the License for the specific language governing
   * permissions and limitations under the License.
   */
  
  package org.kuali.student.common.ui.client.widgets.menus.impl;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.kuali.student.common.ui.client.mvc.Callback;
  import org.kuali.student.common.ui.client.widgets.menus.KSMenuItemData;
  
  import com.google.gwt.user.client.ui.Composite;
  import com.google.gwt.user.client.ui.FlowPanel;
  import com.google.gwt.user.client.ui.HTMLPanel;
  
  public class KSBlockMenuImpl extends Composite{
  	private FlowPanel layout = new FlowPanel();
  	private FlowPanel container = new FlowPanel();
  	private List<KSListMenuImpl> menus = new ArrayList<KSListMenuImpl>();
  	private List<KSMenuItemData> data;
  
  	public KSBlockMenuImpl(){
  		//layout.setStyleName("KS-Block-Menu");
  		layout.setStyleName("ks-page-sub-navigation");
  		container.add(layout);
  		layout.add(new HTMLPanel("<div class=\"clear\">&nbsp;</div>"));
  		this.initWidget(container);
  	}
  
  	public void addMenu(KSListMenuImpl menu){
  		menu.setStyleName("ks-page-sub-navigation-menu");
  		layout.insert(menu, layout.getWidgetCount() -1);
  		menus.add(menu);
  		menu.addGlobalMenuItemSelectCallback(new Callback<KSMenuItemData>(){
  
  			@Override
  			public void exec(KSMenuItemData result) {
  				for(int i=0; i < KSBlockMenuImpl.this.menus.size(); i++){
  					KSBlockMenuImpl.this.menus.get(i).clearSelected();
  				}
  				
  			}
  		});
  
  	}
  
  	public void setMenus(List<KSListMenuImpl> menus){
  		for(KSListMenuImpl menu: menus){
  			this.addMenu(menu);
  		}
  	}
  
  	/**
  	 * Use the top level menu items of a list of KSMenuItemData to generate separate menus in a block
  	 * layout
  	 * @param data
  	 */
  	public void setTopLevelItems(List<KSMenuItemData> data){
  		this.data = data;
  		refresh();
  	}
  	
  	public void refresh(){
  		layout.clear();
  		menus.clear();
  		layout.add(new HTMLPanel("<div class=\"clear\">&nbsp;</div>"));
  		for(KSMenuItemData item: data){
  			List<KSMenuItemData> list = new ArrayList<KSMenuItemData>();
  			list.add(item);
  			KSListMenuImpl menu = new KSListMenuImpl();
  			menu.setItems(list);
  			this.addMenu(menu);
  		}
  	}
  	
  }