addmusicfolderhandler.java

eclise rcp 项目,是非常好的学习源码

package com.siemens.ct.mp3m.handlers;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.handlers.HandlerUtil;

import com.siemens.ct.mp3m.ModelInitializer;
import com.siemens.ct.mp3m.model.physical.MusicFolders;

/**
 * A handler to add music folders
 * 
 * @see org.eclipse.core.commands.IHandler
 * @see org.eclipse.core.commands.AbstractHandler
 */
public class AddMusicFolderHandler extends AbstractHandler {

	public AddMusicFolderHandler() {
		// System.out.println("AddMusicFolderHandler.AddMusicFolderHandler()");
	}

	public Object execute(ExecutionEvent event) throws ExecutionException {
		IWorkbenchWindow window = HandlerUtil.getActiveWorkbenchWindowChecked(event);
		DirectoryDialog d = new DirectoryDialog(window.getShell());

		String folder = d.open();
		if (folder != null) {
			MusicFolders.addMusicFolder(folder);
			ModelInitializer.createTree();
		}

		return null;
	}
}