/*******************************************************************************
 * Copyright (c) 2000, 2003 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 Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.ui.views.bookmarkexplorer;

import java.util.Iterator;

import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.util.OpenStrategy;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.help.WorkbenchHelp;

/**
 * Action to open an editor on the selected bookmarks.
 */
class OpenBookmarkAction extends BookmarkAction {
	
	public OpenBookmarkAction(BookmarkNavigator view) {
		super(view, BookmarkMessages.getString("OpenBookmark.text")); //$NON-NLS-1$
		setToolTipText(BookmarkMessages.getString("OpenBookmark.toolTip")); //$NON-NLS-1$
		WorkbenchHelp.setHelp(this, IBookmarkHelpContextIds.OPEN_BOOKMARK_ACTION);
		setEnabled(false);
	}
	
	public void run() {
		IWorkbenchPage page = getView().getSite().getPage();
		for (Iterator i = getStructuredSelection().iterator(); i.hasNext();) {
			IMarker marker = (IMarker) i.next();
			try {
				page.openEditor(marker,OpenStrategy.activateOnOpen());
			} catch (PartInitException e) {
				// Open an error style dialog for PartInitException by
				// including any extra information from the nested
				// CoreException if present.
	
				// Check for a nested CoreException
				CoreException nestedException = null;
				IStatus status = e.getStatus();
				if (status != null && status.getException() instanceof CoreException)
					nestedException = (CoreException)status.getException();
	
				if (nestedException != null) {
					// Open an error dialog and include the extra
					// status information from the nested CoreException
					ErrorDialog.openError(
						getView().getShell(),
						BookmarkMessages.getString("OpenBookmark.errorTitle"), //$NON-NLS-1$
						e.getMessage(),
						nestedException.getStatus());
				} else {
					// Open a regular error dialog since there is no
					// extra information to display
					MessageDialog.openError(
						getView().getShell(),
						BookmarkMessages.getString("OpenBookmark.errorTitle"), //$NON-NLS-1$
						e.getMessage());
				}
			}
		}
	}
	
	public void selectionChanged(IStructuredSelection sel) {
		setEnabled(!sel.isEmpty());
	}
}