win32explorerview.java

SWT开发的Java调用COM的工具集

/*
 * Copyright (c) 2007 Software Wizards Pty Ltd, Victoria, Australia.
 * mailto:[e-mail]. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted. See the GNU General Public License
 * for more details.
 *
 * Redistribution of the SWTtoCOM software is not permitted as part of any
 * commercial product. Licensing terms for such distribution may be
 * obtained from the copyright holder.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
package au.com.swz.swttocom.example.win32explorer.views;

import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.action.IToolBarManager;
import org.eclipse.jface.action.MenuManager;
import org.eclipse.jface.action.Separator;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.internal.ole.win32.COM;
import org.eclipse.swt.ole.win32.Variant;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.part.DrillDownAdapter;
import org.eclipse.ui.part.ViewPart;

import au.com.swz.swttocom.example.win32explorer.shell.FolderItem;
import au.com.swz.swttocom.example.win32explorer.shell.FolderItemVerb;
import au.com.swz.swttocom.example.win32explorer.shell.FolderItemVerbs;
import au.com.swz.swttocom.example.win32explorer.shell.Shell;
import au.com.swz.swttocom.example.win32explorer.shell.enums.ShellSpecialFolderConstants;


public class Win32ExplorerView extends ViewPart {
	private TreeViewer viewer;
	private Shell win32Shell;
	private DrillDownAdapter drillDownAdapter;
	private VerbToolbarAction[] toolbarActions;

	class ViewLabelProvider extends LabelProvider {

		public String getText(Object obj) {
			if (obj instanceof AbstractTreeObject) {
				return ((AbstractTreeObject)obj).getText();
			}
			return obj.toString();
		}
		public Image getImage(Object obj) {
			if (obj instanceof AbstractTreeObject) {
				return ((AbstractTreeObject)obj).getImage();
			}
			return null;
		}
	}

	/**
	 * The constructor.
	 */
	public Win32ExplorerView() {
		win32Shell = Shell.create(COM.CLSCTX_INPROC_SERVER|COM.CLSCTX_LOCAL_SERVER);
	}

	/**
	 * This is a callback that will allow us
	 * to create the viewer and initialize it.
	 */
	public void createPartControl(Composite parent) {
		viewer = new TreeViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL);
		drillDownAdapter = new DrillDownAdapter(viewer);
		viewer.setContentProvider(new ViewContentProvider());
		viewer.addSelectionChangedListener(new ISelectionChangedListener() {
		    public void selectionChanged(SelectionChangedEvent event) {
		    	enableToolbarActions();
		    }
		});
		viewer.setLabelProvider(new ViewLabelProvider());
		makeActions();
		hookContextMenu();
		contributeToActionBars();
	}

	private void hookContextMenu() {
		MenuManager menuMgr = new MenuManager("#PopupMenu");
		menuMgr.setRemoveAllWhenShown(true);
		menuMgr.addMenuListener(new VerbPopupMenu(viewer, drillDownAdapter));
		Menu menu = menuMgr.createContextMenu(viewer.getControl());
		viewer.getControl().setMenu(menu);
		getSite().registerContextMenu(menuMgr, viewer);
	}

	private void contributeToActionBars() {
		IActionBars bars = getViewSite().getActionBars();
		fillLocalPullDown(bars.getMenuManager());
		fillLocalToolBar(bars.getToolBarManager());
	}

	private void fillLocalPullDown(IMenuManager manager) {
		manager.add(new NamespaceSelectionAction(viewer, "Desktop", 34, win32Shell, ShellSpecialFolderConstants.ssfDESKTOP));
		manager.add(new NamespaceSelectionAction(viewer, "All Programs", 36, win32Shell, ShellSpecialFolderConstants.ssfPROGRAMS));
		manager.add(new NamespaceSelectionAction(viewer, "Control Panel", 57, win32Shell, ShellSpecialFolderConstants.ssfCONTROLS));
		manager.add(new NamespaceSelectionAction(viewer, "Printers", 16, win32Shell, ShellSpecialFolderConstants.ssfPRINTERS));
		manager.add(new NamespaceSelectionAction(viewer, "My Documents", 126, win32Shell, ShellSpecialFolderConstants.ssfPERSONAL));
		manager.add(new NamespaceSelectionAction(viewer, "Favourites", 208, win32Shell, ShellSpecialFolderConstants.ssfFAVORITES));
		manager.add(new NamespaceSelectionAction(viewer, "Recent File List", 213, win32Shell, ShellSpecialFolderConstants.ssfRECENT));
		manager.add(new NamespaceSelectionAction(viewer, "Recycle Bin", 145, win32Shell, ShellSpecialFolderConstants.ssfBITBUCKET));
		manager.add(new NamespaceSelectionAction(viewer, "My Computer", 17, win32Shell, ShellSpecialFolderConstants.ssfDRIVES));
		manager.add(new NamespaceSelectionAction(viewer, "Network Neighborhood", 18, win32Shell, ShellSpecialFolderConstants.ssfNETWORK));
		manager.add(new NamespaceSelectionAction(viewer, "Fonts", 38, win32Shell, ShellSpecialFolderConstants.ssfFONTS));
		manager.add(new NamespaceSelectionAction(viewer, "History", 146, win32Shell, ShellSpecialFolderConstants.ssfHISTORY));
		manager.add(new NamespaceSelectionAction(viewer, "Program Files", 19, win32Shell, ShellSpecialFolderConstants.ssfPROGRAMFILES));
		manager.add(new NamespaceSelectionAction(viewer, "My Pictures", 127, win32Shell, ShellSpecialFolderConstants.ssfMYPICTURES));
	}

	private void fillLocalToolBar(IToolBarManager manager) {
		for (int i=0; i<toolbarActions.length; i++ ) {
			manager.add(toolbarActions[i]);
		}
		manager.add(new Separator());
		drillDownAdapter.addNavigationActions(manager);
	}

	private void enableToolbarActions() {
		for (int i=0; i<toolbarActions.length; i++ ) {
			toolbarActions[i].reset();
		}
		ISelection selection = viewer.getSelection();
		Object obj = ((IStructuredSelection)selection).getFirstElement();
		if (obj instanceof AbstractTreeObject) {
			FolderItem folderItem = ((AbstractTreeObject)obj).getFolderItem();
			FolderItemVerbs verbs = folderItem.verbs();
			if (verbs != null) {
				int verbCount = verbs.getCount();
				for (int i=0; i<verbCount; i++ ) {
					FolderItemVerb verb = verbs.item(new Variant(i));
					String name = verb.getName();
					for (int x=0; x<toolbarActions.length; x++ ) {
						toolbarActions[x].setFolderItemVerb(name, verb);
					}
				}
			}
		}
		for (int i=0; i<toolbarActions.length; i++ ) {
			toolbarActions[i].determineEnabled();
		}
	}
	
	private void makeActions() {
		toolbarActions = new VerbToolbarAction[6];
		toolbarActions[0] = new VerbToolbarAction("&Open", 4);
		toolbarActions[1] = new VerbToolbarAction("&Print", 16);
		toolbarActions[2] = new VerbToolbarAction("Cu&t", ISharedImages.IMG_TOOL_CUT);
		toolbarActions[3] = new VerbToolbarAction("&Copy", ISharedImages.IMG_TOOL_COPY);
		toolbarActions[4] = new VerbToolbarAction("&Delete", ISharedImages.IMG_TOOL_DELETE);
		toolbarActions[5] = new VerbToolbarAction("P&roperties", 227);
	}

	/**
	 * Passing the focus request to the viewer's control.
	 */
	public void setFocus() {
		viewer.getControl().setFocus();
	}
}