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/*******************************************************************************
* Copyright (c) 2004, 2007 QNX Software Systems 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:
* QNX Software Systems - Initial API and implementation
* Anton Leherbauer (Wind River Systems) - bug 183291
*******************************************************************************/
package org.eclipse.cdt.debug.internal.ui.actions;
import org.eclipse.cdt.debug.internal.ui.ICDebugHelpContextIds;
import org.eclipse.cdt.debug.internal.ui.IInternalCDebugUIConstants;
import org.eclipse.cdt.debug.internal.ui.views.disassembly.DisassemblyView;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IAdapterManager;
import org.eclipse.core.runtime.Platform;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.ui.actions.IToggleBreakpointsTarget;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.TextSelection;
import org.eclipse.jface.text.source.IVerticalRulerInfo;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.texteditor.IDocumentProvider;
import org.eclipse.ui.texteditor.ITextEditor;
public class ToggleBreakpointRulerAction extends Action {
static class EmptySelection implements ISelection {
public boolean isEmpty() {
return true;
}
}
private IVerticalRulerInfo fRuler;
private IWorkbenchPart fTargetPart;
private IToggleBreakpointsTarget fTargetAdapter;
private static final ISelection EMPTY_SELECTION = new EmptySelection();
/**
* Constructor for ToggleBreakpointRulerAction.
*
* @param ruler
* @param editor
*/
public ToggleBreakpointRulerAction( IWorkbenchPart part, IVerticalRulerInfo ruler ) {
super( ActionMessages.getString( "ToggleBreakpointRulerAction.Toggle_Breakpoint_1" ) ); //$NON-NLS-1$
fRuler = ruler;
setTargetPart( part );
part.getSite().getWorkbenchWindow().getWorkbench().getHelpSystem().setHelp( this, ICDebugHelpContextIds.TOGGLE_BREAKPOINT_ACTION );
setId( IInternalCDebugUIConstants.ACTION_TOGGLE_BREAKPOINT );
}
/**
* Disposes this action
*/
public void dispose() {
setTargetPart( null );
fRuler = null;
}
/**
* @see Action#run()
*/
public void run() {
try {
fTargetAdapter.toggleLineBreakpoints( getTargetPart(), getTargetSelection() );
}
catch( CoreException e ) {
ErrorDialog.openError( getTargetPart().getSite().getShell(),
ActionMessages.getString( "ToggleBreakpointRulerAction.Error_1" ), //$NON-NLS-1$
ActionMessages.getString( "ToggleBreakpointRulerAction.Operation_failed_1" ), //$NON-NLS-1$
e.getStatus() );
}
}
/**
* Returns this action's vertical ruler info.
*
* @return this action's vertical ruler
*/
protected IVerticalRulerInfo getVerticalRulerInfo() {
return fRuler;
}
private IWorkbenchPart getTargetPart() {
return this.fTargetPart;
}
private void setTargetPart( IWorkbenchPart targetPart ) {
this.fTargetPart = targetPart;
if (fTargetPart != null) {
IResource resource = (IResource) fTargetPart.getAdapter(IResource.class);
if (resource == null && fTargetPart instanceof IEditorPart) {
resource = (IResource) ((IEditorPart)fTargetPart).getEditorInput().getAdapter(IResource.class);
}
if (resource != null) {
fTargetAdapter = getAdapter(resource);
}
if (fTargetAdapter == null) {
fTargetAdapter = getAdapter(fTargetPart);
}
}
if (fTargetAdapter == null) {
fTargetAdapter = new ToggleBreakpointAdapter();
}
}
private IToggleBreakpointsTarget getAdapter(IAdaptable adaptable) {
IToggleBreakpointsTarget adapter= (IToggleBreakpointsTarget)adaptable.getAdapter(IToggleBreakpointsTarget.class);
if (adapter == null) {
IAdapterManager adapterManager= Platform.getAdapterManager();
if (adapterManager.hasAdapter(adaptable, IToggleBreakpointsTarget.class.getName())) {
adapter= (IToggleBreakpointsTarget)adapterManager.loadAdapter(adaptable, IToggleBreakpointsTarget.class.getName());
}
}
return adapter;
}
/**
* Returns the current selection in the active part, possibly
* and empty selection, but never <code>null</code>.
*
* @return the selection in the active part, possibly empty
*/
private ISelection getTargetSelection() {
IDocument doc = getDocument();
if ( doc != null ) {
int line = getVerticalRulerInfo().getLineOfLastMouseButtonActivity();
try {
IRegion region = doc.getLineInformation( line );
return new TextSelection( doc, region.getOffset(), region.getLength() );
}
catch( BadLocationException e ) {
DebugPlugin.log( e );
}
}
return EMPTY_SELECTION;
}
private IDocument getDocument() {
IWorkbenchPart targetPart = getTargetPart();
if ( targetPart instanceof ITextEditor ) {
ITextEditor textEditor = (ITextEditor)targetPart;
IDocumentProvider provider = textEditor.getDocumentProvider();
if ( provider != null )
return provider.getDocument( textEditor.getEditorInput() );
}
else if ( targetPart instanceof DisassemblyView ) {
DisassemblyView dv = (DisassemblyView)targetPart;
IDocumentProvider provider = dv.getDocumentProvider();
if ( provider != null )
return provider.getDocument( dv.getInput() );
}
return null;
}
}
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