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/*******************************************************************************
* Copyright (c) 2009, 2010, 2011 Ericsson
*
* 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
*******************************************************************************/
package org.eclipse.linuxtools.internal.tmf.ui.project.handlers;
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.IFile;
import org.eclipse.core.runtime.CoreException;
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.core.event.ITmfEvent;
import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException;
import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
import org.eclipse.linuxtools.tmf.core.trace.TmfExperiment;
import org.eclipse.linuxtools.tmf.ui.editors.TmfEditorInput;
import org.eclipse.linuxtools.tmf.ui.editors.TmfEventsEditor;
import org.eclipse.linuxtools.tmf.ui.project.model.TmfExperimentElement;
import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.MessageBox;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IReusableEditor;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.IDE;
import org.eclipse.ui.part.FileEditorInput;
/**
* <b><u>OpenExperimentHandler</u></b>
* <p>
*/
public class OpenExperimentHandler extends AbstractHandler {
private TmfExperimentElement fExperiment = null;
// ------------------------------------------------------------------------
// Validation
// ------------------------------------------------------------------------
@Override
public boolean isEnabled() {
// Check if we are closing down
final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
if (window == null) {
return false;
}
// Get the selection
final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
final IWorkbenchPart part = page.getActivePart();
if (part == null) {
return false;
}
final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
if (selectionProvider == null) {
return false;
}
final ISelection selection = selectionProvider.getSelection();
// Make sure there is only one selection and that it is an experiment
fExperiment = null;
if (selection instanceof TreeSelection) {
final TreeSelection sel = (TreeSelection) selection;
// There should be only one item selected as per the plugin.xml
final Object element = sel.getFirstElement();
if (element instanceof TmfExperimentElement) {
fExperiment = (TmfExperimentElement) element;
}
}
// We only enable opening from the Traces folder for now
return (fExperiment != null);
}
// ------------------------------------------------------------------------
// Execution
// ------------------------------------------------------------------------
@Override
public Object execute(final ExecutionEvent event) throws ExecutionException {
// Check if we are closing down
final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
if (window == null) {
return false;
}
final TmfExperimentElement experimentElement = fExperiment;
Thread thread = new Thread() {
@Override
public void run() {
final IFile file;
try {
file = experimentElement.createBookmarksFile();
} catch (final CoreException e) {
Activator.getDefault().logError("Error opening experiment " + experimentElement.getName(), e); //$NON-NLS-1$
displayErrorMsg(Messages.OpenExperimentHandler_Error + "\n\n" + e.getMessage()); //$NON-NLS-1$
return;
}
/* Unlike traces, there is no instanceExperiment, so we call this function
* here alone. Maybe it would be better to do this on experiment's element
* constructor?
*/
experimentElement.refreshSupplementaryFolder();
// Instantiate the experiment's traces
final List<TmfTraceElement> traceEntries = experimentElement.getTraces();
final int nbTraces = traceEntries.size();
int cacheSize = Integer.MAX_VALUE;
String commonEditorId = null;
final ITmfTrace[] traces = new ITmfTrace[nbTraces];
for (int i = 0; i < nbTraces; i++) {
TmfTraceElement element = traceEntries.get(i);
// Since trace is under an experiment, use the original trace from the traces folder
element = element.getElementUnderTraceFolder();
final ITmfTrace trace = element.instantiateTrace();
final ITmfEvent traceEvent = element.instantiateEvent();
if ((trace == null) || (traceEvent == null)) {
displayErrorMsg(Messages.OpenExperimentHandler_NoTraceType);
for (int j = 0; j < i; j++) {
traces[j].dispose();
}
if (trace != null) {
trace.dispose();
}
return;
}
try {
trace.initTrace(element.getResource(), element.getLocation().getPath(), traceEvent.getClass());
} catch (final TmfTraceException e) {
displayErrorMsg(Messages.OpenTraceHandler_InitError + "\n\n" + e); //$NON-NLS-1$
for (int j = 0; j < i; j++) {
traces[j].dispose();
}
trace.dispose();
return;
}
cacheSize = Math.min(cacheSize, trace.getCacheSize());
// If all traces use the same editorId, use it, otherwise use the default
final String editorId = element.getEditorId();
if (commonEditorId == null) {
commonEditorId = (editorId != null) ? editorId : TmfEventsEditor.ID;
} else if (!commonEditorId.equals(editorId)) {
commonEditorId = TmfEventsEditor.ID;
}
traces[i] = trace;
}
// Create the experiment
final TmfExperiment experiment = new TmfExperiment(ITmfEvent.class, experimentElement.getName(), traces, cacheSize, experimentElement.getResource());
experiment.setBookmarksFile(file);
final String editorId = commonEditorId;
Display.getDefault().asyncExec(new Runnable() {
@Override
public void run() {
try {
final IEditorInput editorInput = new TmfEditorInput(file, experiment);
final IWorkbench wb = PlatformUI.getWorkbench();
final IWorkbenchPage activePage = wb.getActiveWorkbenchWindow().getActivePage();
final IEditorPart editor = activePage.findEditor(new FileEditorInput(file));
if ((editor != null) && (editor instanceof IReusableEditor)) {
activePage.reuseEditor((IReusableEditor) editor, editorInput);
activePage.activate(editor);
} else {
activePage.openEditor(editorInput, editorId);
}
IDE.setDefaultEditor(file, editorId);
// editor should dispose the experiment on close
} catch (final CoreException e) {
Activator.getDefault().logError("Error opening experiment " + experimentElement.getName(), e); //$NON-NLS-1$
displayErrorMsg(Messages.OpenExperimentHandler_Error + "\n\n" + e.getMessage()); //$NON-NLS-1$
experiment.dispose();
return;
}
}
});
}
};
thread.start();
return null;
}
private static void displayErrorMsg(final String errorMsg) {
Display.getDefault().asyncExec(new Runnable() {
@Override
public void run() {
final MessageBox mb = new MessageBox(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
mb.setText(Messages.OpenExperimentHandler_Title);
mb.setMessage(errorMsg);
mb.open();
}
});
}
}
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