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/*******************************************************************************
* Copyright (c) 2009, 2013 Ericsson, École Polytechnique de Montréal
*
* 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:
* Francois Chouinard - Initial API and implementation
* Patrick Tasse - Close editors to release resources
* Geneviève Bastien - Moved the delete code to element model's classes
*******************************************************************************/
package org.eclipse.linuxtools.internal.tmf.ui.project.handlers;
import java.util.Iterator;
import java.util.LinkedList;
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.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.ISelectionProvider;
import org.eclipse.jface.viewers.TreeSelection;
import org.eclipse.linuxtools.internal.tmf.ui.Activator;
import org.eclipse.linuxtools.tmf.ui.project.model.ITmfProjectModelElement;
import org.eclipse.linuxtools.tmf.ui.project.model.TmfExperimentElement;
import org.eclipse.linuxtools.tmf.ui.project.model.TmfExperimentFolder;
import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceFolder;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
/**
* <b><u>DeleteTraceHandler</u></b>
* <p>
*/
public class DeleteTraceHandler extends AbstractHandler {
private TreeSelection fSelection = null;
// ------------------------------------------------------------------------
// Validation
// ------------------------------------------------------------------------
@Override
public boolean isEnabled() {
// Check if we are closing down
IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
if (window == null) {
return false;
}
// Get the selection
IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
IWorkbenchPart part = page.getActivePart();
if (part == null) {
return false;
}
ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
if (selectionProvider == null) {
return false;
}
ISelection selection = selectionProvider.getSelection();
// Make sure selection contains only traces
fSelection = null;
if (selection instanceof TreeSelection) {
fSelection = (TreeSelection) selection;
Iterator<Object> iterator = fSelection.iterator();
while (iterator.hasNext()) {
Object element = iterator.next();
if (!(element instanceof TmfTraceElement)) {
return false;
}
}
}
// If we get here, either nothing is selected or everything is a trace
return !selection.isEmpty();
}
// ------------------------------------------------------------------------
// Execution
// ------------------------------------------------------------------------
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
// Check if we are closing down
IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
if (window == null) {
return null;
}
// Confirm the operation
Shell shell = window.getShell();
MessageBox confirmOperation = new MessageBox(shell, SWT.ICON_QUESTION | SWT.CANCEL | SWT.OK);
confirmOperation.setText(Messages.DeleteDialog_Title);
confirmOperation.setMessage(Messages.DeleteTraceHandler_Message);
if (confirmOperation.open() != SWT.OK) {
return null;
}
Iterator<Object> iterator = fSelection.iterator();
while (iterator.hasNext()) {
Object element = iterator.next();
if (element instanceof TmfTraceElement) {
final TmfTraceElement trace = (TmfTraceElement) element;
IResource resource = trace.getResource();
try {
// Close the trace if open
trace.closeEditors();
IPath path = resource.getLocation();
if (path != null && (trace.getParent() instanceof TmfTraceFolder)) {
TmfExperimentFolder experimentFolder = trace.getProject().getExperimentsFolder();
// Propagate the removal to traces
for (ITmfProjectModelElement experiment : experimentFolder.getChildren()) {
List<ITmfProjectModelElement> toRemove = new LinkedList<ITmfProjectModelElement>();
for (ITmfProjectModelElement child : experiment.getChildren()) {
if (child.getName().equals(trace.getName())) {
toRemove.add(child);
}
}
for (ITmfProjectModelElement child : toRemove) {
((TmfExperimentElement) experiment).removeTrace((TmfTraceElement) child);
}
}
// Delete supplementary files
trace.deleteSupplementaryFolder();
}
// Finally, delete the trace
resource.delete(true, new NullProgressMonitor());
// Refresh the project
trace.getProject().refresh();
} catch (final CoreException e) {
Display.getDefault().asyncExec(new Runnable() {
@Override
public void run() {
final MessageBox mb = new MessageBox(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
mb.setText(Messages.DeleteTraceHandler_Error + ' ' + trace.getName());
mb.setMessage(e.getMessage());
mb.open();
}
});
Activator.getDefault().logError("Error deleting trace: " + trace.getName(), e); //$NON-NLS-1$
}
}
}
return null;
}
}
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