/*******************************************************************************
 *  Copyright (c) 2005, 2009 IBM Corporation and others.
 *  All rights reserved. This program and the accompanying materials
 *  are made available under the terms of the Eclipse Public License v1.0
 *  which accompanies this distribution, and is available at
 *  http://www.eclipse.org/legal/epl-v10.html
 * 
 *  Contributors:
 *     IBM Corporation - initial API and implementation
 *     Bjorn Freeman-Benson - initial API and implementation
 *     Wind River Systems - adopted to use with DSF
 *******************************************************************************/
package org.eclipse.cdt.examples.dsf.pda.breakpoints;

import org.eclipse.cdt.examples.dsf.pda.PDAPlugin;
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.debug.core.model.IBreakpoint;
import org.eclipse.debug.core.model.LineBreakpoint;


/**
 * PDA line breakpoint
 * <p>
 * This class is identical to the corresponding in PDA debugger implemented in 
 * org.eclipse.debug.examples.
 * </p>
 */
public class PDALineBreakpoint extends LineBreakpoint {
	
	public static final String INSTALLED = "INSTALLED";
	
	/**
	 * Default constructor is required for the breakpoint manager
	 * to re-create persisted breakpoints. After instantiating a breakpoint,
	 * the <code>setMarker(...)</code> method is called to restore
	 * this breakpoint's attributes.
	 */
	public PDALineBreakpoint() {
	}
	
	/**
	 * Constructs a line breakpoint on the given resource at the given
	 * line number. The line number is 1-based (i.e. the first line of a
	 * file is line number 1). The PDA VM uses 0-based line numbers,
	 * so this line number translation is done at breakpoint install time.
	 * 
	 * @param resource file on which to set the breakpoint
	 * @param lineNumber 1-based line number of the breakpoint
	 * @throws CoreException if unable to create the breakpoint
	 */
	public PDALineBreakpoint(final IResource resource, final int lineNumber) throws CoreException {
		IWorkspaceRunnable runnable = new IWorkspaceRunnable() {
			public void run(IProgressMonitor monitor) throws CoreException {
				IMarker marker = resource.createMarker("org.eclipse.cdt.examples.dsf.pda.markerType.lineBreakpoint");
				setMarker(marker);
				marker.setAttribute(IBreakpoint.ENABLED, Boolean.TRUE);
				marker.setAttribute(IMarker.LINE_NUMBER, lineNumber);
				marker.setAttribute(IBreakpoint.ID, getModelIdentifier());
				marker.setAttribute(IMarker.MESSAGE, "Line Breakpoint: " + resource.getName() + " [line: " + lineNumber + "]");
			}
		};
		run(getMarkerRule(resource), runnable);
	}
	
	/* (non-Javadoc)
	 * @see org.eclipse.debug.core.model.IBreakpoint#getModelIdentifier()
	 */
	public String getModelIdentifier() {
		return PDAPlugin.ID_PDA_DEBUG_MODEL;
	}
	
	/**
	 * Returns whether this breakpoint is a run-to-line breakpoint
	 * 
	 * @return whether this breakpoint is a run-to-line breakpoint
	 */
	public boolean isRunToLineBreakpoint() {
		return false;
	}
	
	public void setInstalled(boolean installed) throws CoreException {
		setAttribute(INSTALLED, installed);
	}
    
	public boolean getInstalled() throws CoreException {
		return ensureMarker().getAttribute(INSTALLED, false);
	}
    
}