/******************************************************************************
* Copyright (c) 2010-2013, Linagora
*
* 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:
* Linagora - initial API and implementation
*******************************************************************************/
package com.ebmwebsourcing.petals.common.internal.commands;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.jface.window.IShellProvider;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.actions.DeleteResourceAction;
import com.ebmwebsourcing.petals.common.internal.provisional.utils.PetalsConstants;
import com.ebmwebsourcing.petals.common.internal.provisional.utils.PlatformUtils;
/**
* @author Vincent Zurczak - EBM WebSourcing
*/
public class PetalsDeleteHandler extends AbstractHandler {
private final DeleteResourceAction deleteAction;
private final List<IResource> resourcesToDelete = new ArrayList<IResource> ();
/**
* Constructor.
*/
public PetalsDeleteHandler() {
final Shell shell = new Shell( Display.getDefault());
this.deleteAction = new DeleteResourceAction( new IShellProvider() {
@Override
public Shell getShell() {
return shell;
}
});
}
/* (non-Javadoc)
* @see org.eclipse.core.commands.IHandler
* #execute(org.eclipse.core.commands.ExecutionEvent)
*/
@Override
public Object execute( ExecutionEvent event ) throws ExecutionException {
this.deleteAction.selectionChanged( new StructuredSelection( this.resourcesToDelete ));
this.deleteAction.run();
return null;
}
/*
* (non-Javadoc)
* @see org.eclipse.core.commands.AbstractHandler
* #setEnabled(java.lang.Object)
*/
@Override
public void setEnabled( Object evaluationContext ) {
this.resourcesToDelete.clear();
// Check the target view
IWorkbenchPart part = null;
try {
part = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getActivePart();
} catch( Exception e ) {
// nothing
}
if( part == null ||
! PetalsConstants.PETALS_PROJECT_EXPLORER_VIEW_ID.equals( part.getSite().getId())) {
super.setBaseEnabled( false );
return;
}
// Check the selection
ISelection s = null;
try {
s = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().getSelection();
} catch( Exception e1 ) {
// nothing
}
if( s == null || s.isEmpty() || !( s instanceof IStructuredSelection )) {
super.setBaseEnabled( false );
return;
}
// The selection must either contain only project, or non-projects
boolean haveProject = false;
boolean haveOthers = false;
for( Iterator<?> it=((IStructuredSelection) s).iterator(); it.hasNext(); ) {
Object o = it.next();
IResource res = (IResource) PlatformUtils.getAdapter( o, IResource.class );
if( res != null ) {
this.resourcesToDelete.add( res );
if( res instanceof IProject )
haveProject = true;
else
haveOthers = true;
}
}
super.setBaseEnabled( haveOthers != haveProject );
}
}