DebugLineBreakpointAdapter.java

/*******************************************************************************
 * Copyright (c) 2004 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
 *     Bjorn Freeman-Benson - initial API and implementation
 *******************************************************************************/
package rhogenwizard.debugger.model;

import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.model.IBreakpoint;
import org.eclipse.debug.core.model.ILineBreakpoint;
import org.eclipse.debug.ui.actions.IToggleBreakpointsTarget;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.texteditor.ITextEditor;

import rhogenwizard.constants.DebugConstants;
import rhogenwizard.editors.RubyEditor;

/**
 * Adapter to create breakpoints in PDA files.
 */
public class DebugLineBreakpointAdapter implements IToggleBreakpointsTarget
{
	public void toggleLineBreakpoints(IWorkbenchPart part, ISelection selection) throws CoreException 
	{
		ITextEditor textEditor = getEditor(part);
	
		if (textEditor != null) 
		{
			IResource resource = (IResource) textEditor.getEditorInput().getAdapter(IResource.class);
			ITextSelection textSelection = (ITextSelection) selection;
			int lineNumber = textSelection.getStartLine();
			IBreakpoint[] breakpoints = DebugPlugin.getDefault().getBreakpointManager().getBreakpoints(DebugConstants.debugModelId);
		
			for (int i = 0; i < breakpoints.length; i++) 
			{
				IBreakpoint breakpoint = breakpoints[i];
				
				if (resource.equals(breakpoint.getMarker().getResource())) 
				{
					if (((ILineBreakpoint)breakpoint).getLineNumber() == (lineNumber + 1)) 
					{
						// remove
						breakpoint.delete();
						return;
					}
				}
			}
			
			// create line breakpoint (doc line numbers start at 0)
			DebugLineBreakpoint lineBreakpoint = new DebugLineBreakpoint(resource, lineNumber + 1);
			DebugPlugin.getDefault().getBreakpointManager().addBreakpoint(lineBreakpoint);
		}
	}

	public boolean canToggleLineBreakpoints(IWorkbenchPart part, ISelection selection)
	{
		return getEditor(part) != null;
	}
	
	/**
	 * Returns the editor being used to edit a PDA file, associated with the
	 * given part, or <code>null</code> if none.
	 *  
	 * @param part workbench part
	 * @return the editor being used to edit a PDA file, associated with the
	 * given part, or <code>null</code> if none
	 */
	private ITextEditor getEditor(IWorkbenchPart part) 
	{
		if (part instanceof RubyEditor) 
		{
			RubyEditor editorPart = (RubyEditor) part;
			IResource resource    = (IResource) editorPart.getEditorInput().getAdapter(IResource.class);
			
			if (resource != null) 
			{
				String extension = resource.getFileExtension();
				
				if (extension != null && extension.equals("rb")) 
				{
					return (ITextEditor) editorPart.getTextEditor();
				}
			}
		}
		
		return null;		
	}

	public void toggleMethodBreakpoints(IWorkbenchPart part, ISelection selection) throws CoreException
	{
	}

	public boolean canToggleMethodBreakpoints(IWorkbenchPart part, ISelection selection) 
	{
		return false;
	}

	public void toggleWatchpoints(IWorkbenchPart part, ISelection selection) throws CoreException 
	{
	}

	public boolean canToggleWatchpoints(IWorkbenchPart part, ISelection selection) 
	{
		return false;
	}
}