filesystemview.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.physical;

import java.util.List;

import org.eclipse.core.runtime.IAdapterFactory;
import org.eclipse.core.runtime.Platform;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.Separator;
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.widgets.Composite;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.IWorkbenchActionConstants;
import org.eclipse.ui.model.BaseWorkbenchContentProvider;
import org.eclipse.ui.model.WorkbenchLabelProvider;
import org.eclipse.ui.part.ViewPart;

import com.siemens.ct.mp3m.model.physical.Mp3File;
import com.siemens.ct.mp3m.model.physical.MusicFolders;
import com.siemens.ct.mp3m.model.physical.MusicFoldersChangeListener;
import com.siemens.ct.mp3m.ui.views.AdapterFactory;
import com.siemens.ct.mp3m.ui.views.EditorFactory;
import com.siemens.ct.mp3m.ui.views.PathEditorInput;
import com.siemens.ct.mp3m.utilities.LogUtil;

public class FileSystemView extends ViewPart {

    public static final String ID = "com.siemens.ct.mp3m.ui.views.physical.FileSystemView";

    private TreeViewer treeViewer;

    private IAdapterFactory adapterFactory = new AdapterFactory();

    public FileSystemView() {
        super();
    }

    public void createPartControl(Composite parent) {
        treeViewer = new TreeViewer(parent, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL);
        getSite().setSelectionProvider(treeViewer);
        Platform.getAdapterManager().registerAdapters(adapterFactory, Mp3File.class);
        treeViewer.setLabelProvider(new WorkbenchLabelProvider());
        treeViewer.setContentProvider(new BaseWorkbenchContentProvider());
        treeViewer.setInput(MusicFolders.getRoot());

        // Create a context menu and register it with the Workbench
        MenuManager menuManager = new MenuManager("FileSystemPopup");
        menuManager.add(new Separator(IWorkbenchActionConstants.MB_ADDITIONS));
        Menu menu = menuManager.createContextMenu(treeViewer.getControl());
        treeViewer.getControl().setMenu(menu);
        getSite().registerContextMenu(menuManager, treeViewer);

        Mp3DoubleclickListener listener = new Mp3DoubleclickListener();
        treeViewer.addDoubleClickListener(listener);

        MusicFolders.addChangeListener(new MusicFoldersChangeListener() {
            public void musicFoldersChanged(List<String> folders) {
                treeViewer.refresh();
            }
        });

    }

    public void dispose() {
        Platform.getAdapterManager().unregisterAdapters(adapterFactory);
        super.dispose();
    }

    public void setFocus() {
        treeViewer.getControl().setFocus();
    }

    class Mp3DoubleclickListener implements IDoubleClickListener {
        public void doubleClick(DoubleClickEvent event) {
            IStructuredSelection selection = (IStructuredSelection) event.getSelection();
            Mp3File source = ((Mp3File) selection.getFirstElement());
            final String fullPath = source.getFullPath();
            if (fullPath != null) {
                PathEditorInput pathEditorInput = new PathEditorInput(fullPath);
                String editorId = EditorFactory.getDefaultMp3EditorId();
                try {
                    getViewSite().getWorkbenchWindow().getActivePage().openEditor(pathEditorInput,
                            editorId);
                } catch (Exception e) {
                    LogUtil.logError("com.siemens.ct.mp3m.ui.views.physical",
                            "cannot open editor with id: " + editorId);
                }
            }
        }
    }

}