content: /*******************************************************************************
   * 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:
   *     IBM Corporation - initial API and implementation
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.ui.packageview;
  
  import org.eclipse.jface.action.Action;
  import org.eclipse.jface.action.IAction;
  import org.eclipse.jface.action.IMenuManager;
  import org.eclipse.jface.action.MenuManager;
  import org.eclipse.jface.action.Separator;
  import org.eclipse.ui.IActionBars;
  import org.eclipse.ui.PlatformUI;
  import org.eclipse.ui.actions.ActionGroup;
  import org.eclipse.wst.jsdt.internal.ui.IJavaHelpContextIds;
  import org.eclipse.wst.jsdt.internal.ui.JavaPluginImages;
  
  /**
   * Adds view menus to switch between flat and hierarchical layout.
   * 
   * 
   */
  class LayoutActionGroup extends ActionGroup {
  
  	public static final String VIEWMENU_LAYOUT_GROUP= "layout"; //$NON-NLS-1$
  	
  	private IAction fFlatLayoutAction;
  	private IAction fHierarchicalLayoutAction;
  	private IAction fShowLibrariesNode;
  	
  	LayoutActionGroup(PackageExplorerPart packageExplorer) {
  		fFlatLayoutAction= new LayoutAction(packageExplorer, true);
  		fHierarchicalLayoutAction= new LayoutAction(packageExplorer, false);
  		fShowLibrariesNode= new ShowLibrariesNodeAction(packageExplorer);
  	}
  
  	/* (non-Javadoc)
  	 * @see ActionGroup#fillActionBars(IActionBars)
  	 */
  	public void fillActionBars(IActionBars actionBars) {
  		super.fillActionBars(actionBars);
  		contributeToViewMenu(actionBars.getMenuManager());
  	}
  	
  	private void contributeToViewMenu(IMenuManager viewMenu) {
  		viewMenu.add(new Separator(VIEWMENU_LAYOUT_GROUP));
  
  		// Create layout sub menu
  		
  		IMenuManager layoutSubMenu= new MenuManager(PackagesMessages.LayoutActionGroup_label);
  		layoutSubMenu.add(fFlatLayoutAction);
  		layoutSubMenu.add(fHierarchicalLayoutAction);
  		
  		viewMenu.add(layoutSubMenu);
  		viewMenu.add(fShowLibrariesNode);
  	}
  }
  
  class LayoutAction extends Action implements IAction {
  
  	private boolean fIsFlatLayout;
  	private PackageExplorerPart fPackageExplorer;
  
  	public LayoutAction(PackageExplorerPart packageExplorer, boolean flat) {
  		super("", AS_RADIO_BUTTON); //$NON-NLS-1$
  
  		fIsFlatLayout= flat;
  		fPackageExplorer= packageExplorer;
  		if (fIsFlatLayout) {
  			setText(PackagesMessages.LayoutActionGroup_flatLayoutAction_label); 
  			JavaPluginImages.setLocalImageDescriptors(this, "flatLayout.gif"); //$NON-NLS-1$
  			PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.LAYOUT_FLAT_ACTION);
  		} else {
  			setText(PackagesMessages.LayoutActionGroup_hierarchicalLayoutAction_label);	  
  			JavaPluginImages.setLocalImageDescriptors(this, "hierarchicalLayout.gif"); //$NON-NLS-1$
  			PlatformUI.getWorkbench().getHelpSystem().setHelp(this, IJavaHelpContextIds.LAYOUT_HIERARCHICAL_ACTION);
  		}
  		setChecked(packageExplorer.isFlatLayout() == fIsFlatLayout);
  	}
  
  	/*
  	 * @see org.eclipse.jface.action.IAction#run()
  	 */
  	public void run() {
  		if (fPackageExplorer.isFlatLayout() != fIsFlatLayout)
  			fPackageExplorer.setFlatLayout(fIsFlatLayout);
  	}
  }
  
  class ShowLibrariesNodeAction extends Action implements IAction {
  
  	private PackageExplorerPart fPackageExplorer;
  
  	public ShowLibrariesNodeAction(PackageExplorerPart packageExplorer) {
  		super(PackagesMessages.LayoutActionGroup_show_libraries_in_group, AS_CHECK_BOX);
  		fPackageExplorer= packageExplorer;
  		setChecked(packageExplorer.isLibrariesNodeShown());
  	}
  
  	/*
  	 * @see org.eclipse.jface.action.IAction#run()
  	 */
  	public void run() {
  		fPackageExplorer.setShowLibrariesNode(isChecked());
  	}
  }
  