/*******************************************************************************
* Copyright (c) 2004, 2014 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
* Alvaro Sanchez-Leon (Ericsson) - preserve selection changes (needed by Bug 235747)
*******************************************************************************/
package org.eclipse.cdt.debug.internal.ui.actions;
import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.MultiStatus;
import org.eclipse.debug.core.DebugEvent;
import org.eclipse.debug.core.DebugException;
import org.eclipse.debug.core.DebugPlugin;
import org.eclipse.debug.core.IDebugEventSetListener;
import org.eclipse.debug.ui.DebugUITools;
import org.eclipse.debug.ui.IDebugUIConstants;
import org.eclipse.debug.ui.IDebugView;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.INullSelectionListener;
import org.eclipse.ui.ISelectionListener;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.actions.ActionDelegate;
/**
* The superclass for action delegates of views different than the Debug view and
* driven by the selection in the Debug view.
*/
public abstract class AbstractViewActionDelegate extends ActionDelegate implements IViewActionDelegate, ISelectionListener, INullSelectionListener, IDebugEventSetListener {
private IAction fAction;
private IDebugView fView;
private IStructuredSelection fSelection = StructuredSelection.EMPTY;
/* (non-Javadoc)
* @see org.eclipse.ui.IViewActionDelegate#init(org.eclipse.ui.IViewPart)
*/
@Override
public void init( IViewPart view ) {
setView( view );
DebugPlugin.getDefault().addDebugEventListener( this );
IWorkbenchWindow window = getWindow();
if ( window != null ) {
window.getSelectionService().addSelectionListener( IDebugUIConstants.ID_DEBUG_VIEW, this );
}
IAdaptable context = DebugUITools.getDebugContext();
IStructuredSelection ss = ( context != null ) ? new StructuredSelection( context ) : StructuredSelection.EMPTY;
selectionChanged( (IWorkbenchPart)null, ss );
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate2#dispose()
*/
@Override
public void dispose() {
IWorkbenchWindow window = getWindow();
if ( window != null ) {
window.getSelectionService().removeSelectionListener( IDebugUIConstants.ID_DEBUG_VIEW, this );
}
DebugPlugin.getDefault().removeDebugEventListener( this );
super.dispose();
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate2#init(org.eclipse.jface.action.IAction)
*/
@Override
public void init( IAction action ) {
setAction( action );
action.setEnabled( false );
super.init( action );
}
protected IDebugView getView() {
return fView;
}
private void setView( IViewPart view ) {
fView = (view instanceof IDebugView) ? (IDebugView)view : null;
}
/* (non-Javadoc)
* @see org.eclipse.ui.IActionDelegate#run(org.eclipse.jface.action.IAction)
*/
@Override
public void run( IAction action ) {
final MultiStatus ms = new MultiStatus( CDebugUIPlugin.getUniqueIdentifier(), DebugException.REQUEST_FAILED, "", null ); //$NON-NLS-1$
BusyIndicator.showWhile( Display.getCurrent(), new Runnable() {
@Override
public void run() {
try {
doAction();
}
catch( DebugException e ) {
ms.merge( e.getStatus() );
}
}
} );
if ( !ms.isOK() ) {
IWorkbenchWindow window = CDebugUIPlugin.getActiveWorkbenchWindow();
if ( window != null ) {
CDebugUIPlugin.errorDialog( getErrorDialogMessage(), ms.getChildren()[0] );
}
else {
CDebugUIPlugin.log( ms );
}
}
}
protected IAction getAction() {
return fAction;
}
private void setAction( IAction action ) {
fAction = action;
}
private IWorkbenchWindow getWindow() {
if ( getView() != null ) {
return getView().getViewSite().getWorkbenchWindow();
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.ui.ISelectionListener#selectionChanged(org.eclipse.ui.IWorkbenchPart, org.eclipse.jface.viewers.ISelection)
*/
@Override
public void selectionChanged( IWorkbenchPart part, ISelection selection ) {
setSelection( selection );
update();
}
protected IStructuredSelection getSelection() {
return fSelection;
}
protected void setSelection( ISelection selection ) {
fSelection = (selection instanceof IStructuredSelection) ? (IStructuredSelection)selection : StructuredSelection.EMPTY;
}
/* (non-Javadoc)
* @see org.eclipse.debug.core.IDebugEventSetListener#handleDebugEvents(org.eclipse.debug.core.DebugEvent[])
*/
@Override
public void handleDebugEvents( final DebugEvent[] events ) {
if ( getWindow() == null || getAction() == null ) {
return;
}
Shell shell = getWindow().getShell();
if ( shell == null || shell.isDisposed() ) {
return;
}
Runnable r = new Runnable() {
@Override
public void run() {
for( int i = 0; i < events.length; i++ ) {
if ( events[i].getSource() != null ) {
doHandleDebugEvent( events[i] );
}
}
}
};
shell.getDisplay().asyncExec( r );
}
/* (non-Javadoc)
* @see org.eclipse.ui.actions.ActionDelegate#selectionChanged(org.eclipse.jface.action.IAction, org.eclipse.jface.viewers.ISelection)
*/
@Override
public void selectionChanged( IAction action, ISelection selection ) {
setSelection( selection );
update();
}
protected abstract String getErrorDialogTitle();
protected abstract String getErrorDialogMessage();
protected abstract void doAction() throws DebugException;
protected abstract void update();
protected abstract void doHandleDebugEvent( DebugEvent event );
}