linktreeobject.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.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.internal.win32.OS;
import org.eclipse.swt.internal.win32.TCHAR;
import org.eclipse.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;

import au.com.swz.swttocom.example.win32explorer.shell.FolderItem;
import au.com.swz.swttocom.example.win32explorer.shell.impl.IShellLinkDual2Impl;
import au.com.swz.swttocom.swt.types.pointer.StringPointer;

public class LinkTreeObject extends AbstractTreeObject {
	private IShellLinkDual2Impl link;
	
	public LinkTreeObject(FolderItem folderItem, IShellLinkDual2Impl link, AbstractTreeObject parent) {
		super(folderItem, parent);
		this.link = link;
	}
	
	public String getText() {
		return getFolderItem().getName();
	}
	
	public Object[] getChildren() {
		return null;
	}

	public boolean hasChildren() {
		return false;
	}
	
	public Image getImage() {
		try {
			StringPointer iconPath = new StringPointer();
			int nIconIndex = link.getIconLocation(iconPath);
			TCHAR lpszFile = new TCHAR (0, iconPath.getValue(), true);
			int [] phiconSmall = new int[1], phiconLarge = null;
			OS.ExtractIconEx (lpszFile, nIconIndex, phiconLarge, phiconSmall, 1);
			if (phiconSmall [0] != 0) {
				return Image.win32_new (null, SWT.ICON, phiconSmall[0]);
			}
			String path = link.getPath();
			if (path != null) {
				Image image = Utils.getAssociatedImage(path);
				if (image != null) {
					return image;
				}
				FolderItem folderItem = link.getTarget();
				if (folderItem != null) {
					image = Utils.extractFileImage(folderItem.getPath(), 1);
					if (image != null) {
						return image;
					}
				}
			}
		} catch (Throwable e) {
			e.printStackTrace();
		}
		return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJ_FILE);
	}
}