logicalview.java

eclise rcp 项目,是非常好的学习源码

/*******************************************************************************
 * Copyright (c) 2007 Siemens AG
 * 
 * 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:
 *    Kai T鰀ter - initial API and implementation
 *******************************************************************************/

package com.siemens.ct.mp3m.ui.views.logical;

import org.eclipse.jface.viewers.DoubleClickEvent;
import org.eclipse.jface.viewers.IDoubleClickListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Tree;
import org.eclipse.swt.widgets.TreeColumn;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.part.ViewPart;

import com.siemens.ct.mp3m.model.logical.Artists;
import com.siemens.ct.mp3m.model.logical.ILogicalModelListener;
import com.siemens.ct.mp3m.model.logical.Song;
import com.siemens.ct.mp3m.ui.views.EditorFactory;
import com.siemens.ct.mp3m.ui.views.PathEditorInput;

/**
 * The logical view: Artists, Albums, Tracks + Titles
 * 
 * @author Kai Toedter
 * @author $LastChangedBy: toedter_k $
 * @version $LastChangedDate: $
 * @version $LastChangedRevision: $
 */
public class LogicalView extends ViewPart implements ILogicalModelListener {
	public static final String ID = "com.siemens.ct.mp3m.ui.views.logical.LogicalView"; //$NON-NLS-1$

	// The TableTreeViewer
	TreeViewer treeViewer;

	/**
	 * Creates the main window's contents
	 * 
	 * @param parent
	 *            the main window
	 * 
	 * @return Control
	 */
	@SuppressWarnings("deprecation")
	protected Control createContents(Composite parent) {
		// Create the table viewer to display the Artists
		treeViewer = new TreeViewer(parent, SWT.FULL_SELECTION);
		treeViewer.getTree().setLayoutData(new GridData(GridData.FILL_BOTH));

		// Set the content and label providers
		treeViewer.setContentProvider(new ArtistTreeContentProvider(this));
		treeViewer.setLabelProvider(new ArtistTreeLabelProvider());
		treeViewer.setInput(Artists.getArtists());

		String[] columnTitles = { Messages.getString("LogicalView.Artist_Album_Song"),
				Messages.getString("LogicalView.Track"), Messages.getString("LogicalView.Duration") };
		Tree tree1 = treeViewer.getTree();
		for (int i = 0; i < columnTitles.length; i++) {
			TreeColumn treeColumn = new TreeColumn(tree1, SWT.NONE);
			treeColumn.setText(columnTitles[i]);
		}
		tree1.setSortColumn(tree1.getColumn(0));
		int columnCount = tree1.getColumnCount();
		for (int i = 0; i < columnCount; i++) {
			TreeColumn treeColumn = tree1.getColumn(i);
			treeColumn.pack();
		}
		tree1.setHeaderVisible(true);
		tree1.setLinesVisible(true);
		// Set up the table
		/*
		 * Table table = ttv.getTree().getTable(); new TableColumn(table,
		 * SWT.RIGHT).setText(Messages
		 * .getString("LogicalView.Artist_Album_Song")); //$NON-NLS-1$ new
		 * TableColumn(table,
		 * SWT.LEFT).setText(Messages.getString("LogicalView.Track"));
		 * //$NON-NLS-1$ new TableColumn(table,
		 * SWT.LEFT).setText(Messages.getString("LogicalView.Duration"));
		 * //$NON-NLS-1$
		 *  // Expand everything ttv.expandAll();
		 *  // Pack the columns for (int i = 0, n = table.getColumnCount(); i <
		 * n; i++) { table.getColumn(i).pack(); }
		 *  // Turn on the header and the lines table.setHeaderVisible(true);
		 * table.setLinesVisible(true);
		 */
		return treeViewer.getTree();
	}

	// @Override
	public void createPartControl(Composite parent) {
		createContents(parent);
		Mp3DoubleclickListener listener = new Mp3DoubleclickListener(this);
		treeViewer.addDoubleClickListener(listener);
		Artists.addModelChangeListener(this);
		// getSite().getKeyBindingService().setScopes(new
		// String[]{"com.siemens.ct.mp3manager.mp3ManagerContext"});
		// //$NON-NLS-1$
	}

	// @Override
	public void setFocus() {
		treeViewer.getControl().setFocus();
	}

	class Mp3DoubleclickListener implements IDoubleClickListener {
		private final LogicalView view;

		/**
		 * @param view
		 *            the logical view
		 */
		Mp3DoubleclickListener(LogicalView view) {
			this.view = view;
		}

		public void doubleClick(DoubleClickEvent event) {
			IStructuredSelection selection = (IStructuredSelection) event.getSelection();
			if (selection.getFirstElement() instanceof Song) {
				Song title = ((Song) selection.getFirstElement());
				final String fullPath = title.getFile();
				if (fullPath != null) {
					PathEditorInput pathEditorInput = new PathEditorInput(fullPath);
					try {
						this.view.getViewSite().getWorkbenchWindow().getActivePage().openEditor(
								pathEditorInput, EditorFactory.getDefaultMp3EditorId());
					} catch (PartInitException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					}
				}
			}
		}
	}

	/*
	 * (non-Javadoc)
	 * 
	 * @see com.siemens.ct.mp3m.model.logical.ILogicalModelListener#modelChanged()
	 */
	public void modelChanged() {
		treeViewer.setInput(Artists.getArtists());
		treeViewer.refresh();
	}
}