bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/bookmarkexplorer/EditBookmarkAction.java

/************************************************************************
Copyright (c) 2002 IBM Corporation and others.
All rights reserved.   This program and the accompanying materials
are made available under the terms of the Common Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/cpl-v10.html

Contributors:
	IBM - Initial implementation
************************************************************************/

package org.eclipse.ui.views.bookmarkexplorer;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspaceRunnable;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.internal.WorkbenchPlugin;

/**
 * Opens a properties dialog allowing the user to edit the bookmark's description. 
 */
class EditBookmarkAction extends BookmarkAction {
	
	protected EditBookmarkAction(BookmarkNavigator view) {
		super(view, BookmarkMessages.getString("Properties.text")); //$NON-NLS-1$
		setEnabled(false);
	}

	private IMarker marker;

	public void run() {
		if (marker != null)
			editBookmark();
	}
	
	/**
	 * Sets marker to the current selection if the selection is an instance of 
	 * <code>org.eclipse.core.resources.IMarker<code> and the selected marker's 
	 * resource is an instance of <code>org.eclipse.core.resources.IFile<code>.
	 * Otherwise sets marker to null.
	 */
	public void selectionChanged(IStructuredSelection selection) {
		marker = null;
		setEnabled(false);
		
		if (selection.size() != 1)
			return;
			
		Object o = selection.getFirstElement(); 
		if (!(o instanceof IMarker))
			return;
			
		IMarker selectedMarker = (IMarker) o;
		IResource resource = selectedMarker.getResource();
		if (resource instanceof IFile) {
			marker = selectedMarker;
			setEnabled(true);
		}
	}
	
	private void editBookmark() {
		IFile file = (IFile) marker.getResource();
		
		try {
			file.getWorkspace().run(
				new IWorkspaceRunnable() {
					public void run(IProgressMonitor monitor) throws CoreException {
						BookmarkPropertiesDialog dialog = new BookmarkPropertiesDialog(getView().getSite().getShell());
						dialog.setMarker(marker);	
						dialog.open();
					}
				},
				null);
		} catch (CoreException e) {
			WorkbenchPlugin.log(null, e.getStatus()); // We don't care
		}
	}

}