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Viewing changes to lttng/org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/internal/tmf/ui/project/handlers/OpenExperimentHandler.java

  • Committer: Package Import Robot
  • Author(s): Jakub Adam
  • Date: 2012-06-29 12:07:30 UTC
  • Revision ID: package-import@ubuntu.com-20120629120730-bfri1xys1i71dpn6
Tags: upstream-1.0.0
Import upstream version 1.0.0

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lttng/org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/internal/tmf/ui/project/handlers/OpenExperimentHandler.java
 
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/*******************************************************************************
 
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 * Copyright (c) 2009, 2010, 2011 Ericsson
 
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 *
 
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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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 *
 
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 * Contributors:
 
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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 java.util.List;
 
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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.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.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.event.TmfTimeRange;
 
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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.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.editors.TmfEventsEditor;
 
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import org.eclipse.linuxtools.tmf.ui.project.model.TmfExperimentElement;
 
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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.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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/**
 
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 * <b><u>OpenExperimentHandler</u></b>
 
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 * <p>
 
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 */
 
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public class OpenExperimentHandler extends AbstractHandler {
 
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    private static final String BOOKMARKS_HIDDEN_FILE = ".bookmarks"; //$NON-NLS-1$
 
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    private TmfExperimentElement fExperiment = null;
 
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    // ------------------------------------------------------------------------
 
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    // Validation
 
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    // ------------------------------------------------------------------------
 
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    @Override
 
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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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        if (window == null)
 
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            return false;
 
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        // Get the selection
 
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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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            return false;
 
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        final ISelection selection = selectionProvider.getSelection();
 
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        // Make sure there is only one selection and that it is an experiment
 
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        fExperiment = null;
 
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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 TmfExperimentElement)
 
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                fExperiment = (TmfExperimentElement) element;
 
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        }
 
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        // We only enable opening from the Traces folder for now
 
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        return (fExperiment != null);
 
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    }
 
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    // ------------------------------------------------------------------------
 
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    // Execution
 
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    // ------------------------------------------------------------------------
 
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    @SuppressWarnings({ "rawtypes", "unchecked" })
 
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    @Override
 
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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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        if (window == null)
 
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            return false;
 
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        try {
 
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            final IFile bookmarksFile = fExperiment.getProject().getExperimentsFolder().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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            }
 
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            bookmarksFile.setHidden(true);
 
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            final IFile file = fExperiment.getResource().getFile(fExperiment.getName() + '_');
 
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            if (!file.exists()) {
 
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                file.createLink(bookmarksFile.getLocation(), IResource.REPLACE, null);
 
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            }
 
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            file.setHidden(true);
 
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            file.setPersistentProperty(TmfCommonConstants.TRACETYPE, TmfExperiment.class.getCanonicalName());
 
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            // Instantiate the experiment's traces
 
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            final List<TmfTraceElement> traceEntries = fExperiment.getTraces();
 
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            final int nbTraces = traceEntries.size();
 
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            int cacheSize = Integer.MAX_VALUE;
 
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            boolean useEditor = true;
 
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            String experimentEditorId = null;
 
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            final ITmfTrace<?>[] traces = new ITmfTrace[nbTraces];
 
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            for (int i = 0; i < nbTraces; i++) {
 
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                TmfTraceElement element = traceEntries.get(i);
 
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                // Since trace is under an experiment, use the original trace from the traces folder
 
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                element = element.getElementUnderTraceFolder();
 
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                final ITmfTrace trace = element.instantiateTrace();
 
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                final ITmfEvent traceEvent = element.instantiateEvent();
 
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                if ((trace == null) || (traceEvent == null)) {
 
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                    displayErrorMsg(Messages.OpenExperimentHandler_NoTraceType);
 
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                    for (int j = 0; j < i; j++) {
 
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                        traces[j].dispose();
 
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                    }
 
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                    return null;
 
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                }
 
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                try {
 
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                    trace.initTrace(element.getResource(), element.getLocation().getPath(), traceEvent.getClass());
 
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                } catch (final TmfTraceException e) {
 
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                    displayErrorMsg(""); //$NON-NLS-1$
 
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                }
 
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                cacheSize = Math.min(cacheSize, trace.getCacheSize());
 
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                final String editorId = element.getEditorId();
 
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                if (editorId == null) {
 
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                    useEditor = false;
 
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                    experimentEditorId = null;
 
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                } else if (useEditor) {
 
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                    if (experimentEditorId == null) {
 
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                        experimentEditorId = editorId;
 
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                    } else if (!editorId.equals(experimentEditorId)) {
 
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                        useEditor = false;
 
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                    }
 
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                }
 
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                traces[i] = trace;
 
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            }
 
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            // Create the experiment
 
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            TmfExperiment experiment;
 
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            if (useEditor) {
 
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                experiment = new TmfExperiment(ITmfEvent.class, fExperiment.getName(), traces, cacheSize) {
 
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                    @Override
 
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                    public void initTrace(IResource resource, String path, Class type) {
 
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                        super.initTrace(resource, path, type);
 
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                        getIndexer().buildIndex(getNbEvents(), TmfTimeRange.ETERNITY, false);
 
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                    }
 
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                };
 
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            } else {
 
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                experiment = new TmfExperiment(ITmfEvent.class, fExperiment.getName(), traces, cacheSize);
 
179
            }
 
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            experiment.setBookmarksFile(file);
 
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            if (useEditor) {
 
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                final IEditorInput editorInput = new TmfEditorInput(file, experiment);
 
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                final IWorkbench wb = PlatformUI.getWorkbench();
 
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                final IWorkbenchPage activePage = wb.getActiveWorkbenchWindow().getActivePage();
 
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                final String editorId = TmfEventsEditor.ID;
 
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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);
 
192
                } else {
 
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                    activePage.openEditor(editorInput, editorId);
 
194
                }
 
195
                experiment.initTrace(null, null, null);
 
196
                IDE.setDefaultEditor(file, editorId);
 
197
                // editor should dispose the experiment on close
 
198
            } else {
 
199
                TmfExperiment.setCurrentExperiment(experiment);
 
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                TmfSignalManager.dispatchSignal(new TmfExperimentSelectedSignal(this, experiment));
 
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                IDE.setDefaultEditor(file, EventsViewEditor.ID);
 
202
            }
 
203
        } catch (final CoreException e) {
 
204
            displayErrorMsg(e.getMessage());
 
205
        }
 
206
 
 
207
        return null;
 
208
    }
 
209
 
 
210
    private void displayErrorMsg(final String errorMsg) {
 
211
        final MessageBox mb = new MessageBox(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
 
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        mb.setText(Messages.OpenExperimentHandler_Title);
 
213
        mb.setMessage(errorMsg);
 
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        mb.open();
 
215
    }
 
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}