foldertreeobject.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.swt.graphics.Image;
import org.eclipse.swt.ole.win32.Variant;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;

import au.com.swz.swttocom.example.win32explorer.shell.Folder;
import au.com.swz.swttocom.example.win32explorer.shell.FolderItem;
import au.com.swz.swttocom.example.win32explorer.shell.FolderItems;
import au.com.swz.swttocom.example.win32explorer.shell.impl.IShellLinkDual2Impl;

public class FolderTreeObject extends AbstractTreeObject {
	private Folder folder;
	
	public FolderTreeObject(FolderItem folderItem, Folder folder, AbstractTreeObject parent) {
		super(folderItem, parent);
		this.folder = folder;
	}
	
	public String getText() {
		return folder.getTitle();
	}
	
	public Object[] getChildren() {
		try {
			FolderItems items = folder.items();
			int itemCount = items.getCount();
			Object[] children = new Object[itemCount];
			for (int i=0; i<itemCount; i++ ) {
				FolderItem folderItem = items.item(new Variant(i));
				if (folderItem.getIsFolder()) {
					Folder folder = (Folder) folderItem.getGetFolder();
					children[i] = new FolderTreeObject(folderItem, folder, this);
				} else if (folderItem.getIsLink()) {
					IShellLinkDual2Impl link = (IShellLinkDual2Impl) folderItem.getGetLink();
					children[i] = new LinkTreeObject(folderItem, link, this);
				} else {
					children[i] = new FolderItemTreeObject(folderItem, this);
				}
			}
			return children;
		} catch (Exception e) {
			e.printStackTrace();
			return new Object[0];
		}
	}

	public boolean hasChildren() {
		return (folder.items().getCount() > 0);
	}
	
	public Image getImage() {
		return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FOLDER);
	}
}