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/*******************************************************************************
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* Copyright (c) 2009, 2010, 2011 Ericsson
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* All rights reserved. This program and the accompanying materials are
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* made available under the terms of the Eclipse Public License v1.0 which
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* accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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* Francois Chouinard - Initial API and implementation
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*******************************************************************************/
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package org.eclipse.linuxtools.internal.tmf.ui.project.handlers;
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import java.io.ByteArrayInputStream;
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import java.io.InputStream;
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import org.eclipse.core.commands.AbstractHandler;
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import org.eclipse.core.commands.ExecutionEvent;
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import org.eclipse.core.commands.ExecutionException;
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import org.eclipse.core.resources.IFile;
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import org.eclipse.core.resources.IFolder;
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import org.eclipse.core.resources.IResource;
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import org.eclipse.core.runtime.CoreException;
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import org.eclipse.jface.viewers.ISelection;
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import org.eclipse.jface.viewers.ISelectionProvider;
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import org.eclipse.jface.viewers.TreeSelection;
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import org.eclipse.linuxtools.internal.tmf.ui.Activator;
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import org.eclipse.linuxtools.tmf.core.TmfCommonConstants;
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import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
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import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException;
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import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentSelectedSignal;
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import org.eclipse.linuxtools.tmf.core.signal.TmfSignalManager;
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import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
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import org.eclipse.linuxtools.tmf.core.trace.TmfExperiment;
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import org.eclipse.linuxtools.tmf.core.trace.TmfTrace;
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import org.eclipse.linuxtools.tmf.ui.editors.EventsViewEditor;
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import org.eclipse.linuxtools.tmf.ui.editors.TmfEditorInput;
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import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
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import org.eclipse.swt.widgets.MessageBox;
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import org.eclipse.ui.IEditorInput;
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import org.eclipse.ui.IEditorPart;
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import org.eclipse.ui.IReusableEditor;
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import org.eclipse.ui.IWorkbench;
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import org.eclipse.ui.IWorkbenchPage;
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import org.eclipse.ui.IWorkbenchPart;
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import org.eclipse.ui.IWorkbenchWindow;
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import org.eclipse.ui.PartInitException;
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import org.eclipse.ui.PlatformUI;
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import org.eclipse.ui.ide.IDE;
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import org.eclipse.ui.part.FileEditorInput;
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* <b><u>OpenTraceHandler</u></b>
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* TODO: Add support for multiple trace selection
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public class OpenTraceHandler extends AbstractHandler {
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private static final String BOOKMARKS_HIDDEN_FILE = ".bookmarks"; //$NON-NLS-1$
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// ------------------------------------------------------------------------
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// ------------------------------------------------------------------------
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private TmfTraceElement fTrace = null;
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// ------------------------------------------------------------------------
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// ------------------------------------------------------------------------
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public boolean isEnabled() {
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// Check if we are closing down
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final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
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final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
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final IWorkbenchPart part = page.getActivePart();
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final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
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if (selectionProvider == null)
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final ISelection selection = selectionProvider.getSelection();
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// Make sure there is only one selection and that it is a trace
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if (selection instanceof TreeSelection) {
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final TreeSelection sel = (TreeSelection) selection;
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// There should be only one item selected as per the plugin.xml
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final Object element = sel.getFirstElement();
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if (element instanceof TmfTraceElement)
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fTrace = (TmfTraceElement) element;
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// We only enable opening from the Traces folder for now
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return (fTrace != null);
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// ------------------------------------------------------------------------
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// ------------------------------------------------------------------------
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@SuppressWarnings({ "rawtypes", "unchecked" })
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public Object execute(final ExecutionEvent event) throws ExecutionException {
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// Check if we are closing down
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final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
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// Check that the trace is valid
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// If trace is under an experiment, use the original trace from the traces folder
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fTrace = fTrace.getElementUnderTraceFolder();
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final ITmfTrace trace = fTrace.instantiateTrace();
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final ITmfEvent traceEvent = fTrace.instantiateEvent();
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if ((trace == null) || (traceEvent == null)) {
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displayErrorMsg(Messages.OpenTraceHandler_NoTraceType);
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// Get the editor_id from the extension point
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final String editorId = fTrace.getEditorId();
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final boolean usesEditor = (editorId != null) && (editorId.length() > 0);
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trace.initTrace(fTrace.getResource(), fTrace.getLocation().getPath(), traceEvent.getClass());
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} catch (final TmfTraceException e) {
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displayErrorMsg(Messages.OpenTraceHandler_NoTrace + "\n\n" + e); //$NON-NLS-1$
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final IResource resource = fTrace.getResource();
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if (resource instanceof IFile)
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file = (IFile) resource;
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else if (resource instanceof IFolder)
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final IFile bookmarksFile = fTrace.getProject().getTracesFolder().getResource().getFile(BOOKMARKS_HIDDEN_FILE);
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if (!bookmarksFile.exists()) {
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final InputStream source = new ByteArrayInputStream(new byte[0]);
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bookmarksFile.create(source, true, null);
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bookmarksFile.setHidden(true);
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final IFolder folder = (IFolder) resource;
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file = folder.getFile(fTrace.getName() + '_');
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file.createLink(bookmarksFile.getLocation(), IResource.REPLACE, null);
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file.setHidden(true);
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file.setPersistentProperty(TmfCommonConstants.TRACETYPE, fTrace.getTraceType());
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file.setPersistentProperty(TmfCommonConstants.TRACETYPE, TmfTrace.class.getCanonicalName());
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} catch (final CoreException e) {
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Activator.getDefault().logError("Error opening trace " + fTrace.getName(), e); //$NON-NLS-1$
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final IEditorInput editorInput = new TmfEditorInput(file, trace);
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final IWorkbench wb = PlatformUI.getWorkbench();
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final IWorkbenchPage activePage = wb.getActiveWorkbenchWindow().getActivePage();
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final IEditorPart editor = activePage.findEditor(new FileEditorInput(file));
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if ((editor != null) && (editor instanceof IReusableEditor)) {
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activePage.reuseEditor((IReusableEditor) editor, editorInput);
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activePage.activate(editor);
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activePage.openEditor(editorInput, editorId);
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if (resource instanceof IFile)
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IDE.setDefaultEditor((IFile) resource, editorId);
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} catch (final PartInitException e) {
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Activator.getDefault().logError("Error opening trace " + fTrace.getName(), e); //$NON-NLS-1$
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// Create the experiment
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final ITmfTrace[] traces = new ITmfTrace[] { trace };
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final TmfExperiment experiment = new TmfExperiment(traceEvent.getClass(), fTrace.getName(), traces, trace.getCacheSize());
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experiment.setBookmarksFile(file);
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TmfExperiment.setCurrentExperiment(experiment);
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TmfSignalManager.dispatchSignal(new TmfExperimentSelectedSignal(this, experiment));
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IDE.setDefaultEditor(file, EventsViewEditor.ID);
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private void displayErrorMsg(final String errorMsg) {
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final MessageBox mb = new MessageBox(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
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mb.setText(Messages.OpenTraceHandler_Title);
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mb.setMessage(errorMsg);