org.eclipse.linuxtools.tmf.ui/src/org/eclipse/linuxtools/internal/tmf/ui/project/handlers/OpenTraceHandler.java

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2010, 2011 Ericsson
   3  *
   4  * All rights reserved. This program and the accompanying materials are
   5  * made available under the terms of the Eclipse Public License v1.0 which
   6  * accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *   Francois Chouinard - Initial API and implementation
  11  *******************************************************************************/
  12
  13 package org.eclipse.linuxtools.internal.tmf.ui.project.handlers;
  14
  15 import java.io.ByteArrayInputStream;
  16 import java.io.FileNotFoundException;
  17 import java.io.InputStream;
  18
  19 import org.eclipse.core.commands.AbstractHandler;
  20 import org.eclipse.core.commands.ExecutionEvent;
  21 import org.eclipse.core.commands.ExecutionException;
  22 import org.eclipse.core.resources.IFile;
  23 import org.eclipse.core.resources.IFolder;
  24 import org.eclipse.core.resources.IResource;
  25 import org.eclipse.core.runtime.CoreException;
  26 import org.eclipse.jface.viewers.ISelection;
  27 import org.eclipse.jface.viewers.ISelectionProvider;
  28 import org.eclipse.jface.viewers.TreeSelection;
  29 import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
  30 import org.eclipse.linuxtools.tmf.core.experiment.TmfExperiment;
  31 import org.eclipse.linuxtools.tmf.core.signal.TmfExperimentSelectedSignal;
  32 import org.eclipse.linuxtools.tmf.core.signal.TmfSignalManager;
  33 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  34 import org.eclipse.linuxtools.tmf.core.trace.TmfTrace;
  35 import org.eclipse.linuxtools.tmf.ui.editors.EventsViewEditor;
  36 import org.eclipse.linuxtools.tmf.ui.editors.TmfEditorInput;
  37 import org.eclipse.linuxtools.tmf.ui.project.model.TmfExperimentElement;
  38 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
  39 import org.eclipse.swt.widgets.MessageBox;
  40 import org.eclipse.ui.IEditorInput;
  41 import org.eclipse.ui.IEditorPart;
  42 import org.eclipse.ui.IReusableEditor;
  43 import org.eclipse.ui.IWorkbench;
  44 import org.eclipse.ui.IWorkbenchPage;
  45 import org.eclipse.ui.IWorkbenchPart;
  46 import org.eclipse.ui.IWorkbenchWindow;
  47 import org.eclipse.ui.PartInitException;
  48 import org.eclipse.ui.PlatformUI;
  49 import org.eclipse.ui.ide.IDE;
  50 import org.eclipse.ui.part.FileEditorInput;
  51
  52 /**
  53  * <b><u>OpenTraceHandler</u></b>
  54  * <p>
  55  * TODO: Add support for multiple trace selection
  56  */
  57 public class OpenTraceHandler extends AbstractHandler {
  58
  59     private static final String BOOKMARKS_HIDDEN_FILE = ".bookmarks"; //$NON-NLS-1$
  60
  61     // ------------------------------------------------------------------------
  62     // Attributes
  63     // ------------------------------------------------------------------------
  64
  65     private TmfTraceElement fTrace = null;
  66
  67     // ------------------------------------------------------------------------
  68     // Validation
  69     // ------------------------------------------------------------------------
  70
  71     @Override
  72     public boolean isEnabled() {
  73
  74         // Check if we are closing down
  75         final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  76         if (window == null)
  77             return false;
  78
  79         // Get the selection
  80         final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
  81         final IWorkbenchPart part = page.getActivePart();
  82         final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
  83         if (selectionProvider == null)
  84             return false;
  85         final ISelection selection = selectionProvider.getSelection();
  86
  87         // Make sure there is only one selection and that it is a trace
  88         fTrace = null;
  89         if (selection instanceof TreeSelection) {
  90             final TreeSelection sel = (TreeSelection) selection;
  91             // There should be only one item selected as per the plugin.xml
  92             final Object element = sel.getFirstElement();
  93             if (element instanceof TmfTraceElement)
  94                 fTrace = (TmfTraceElement) element;
  95         }
  96
  97         // We only enable opening from the Traces folder for now
  98         return (fTrace != null);
  99     }
 100
 101     // ------------------------------------------------------------------------
 102     // Execution
 103     // ------------------------------------------------------------------------
 104
 105     @Override
 106     @SuppressWarnings({ "rawtypes", "unchecked" })
 107     public Object execute(final ExecutionEvent event) throws ExecutionException {
 108
 109         // Check if we are closing down
 110         final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
 111         if (window == null)
 112             return null;
 113
 114         // Check that the trace is valid
 115         if (fTrace == null)
 116             return null;
 117
 118         // If trace is under an experiment, use the original trace from the traces folder
 119         if (fTrace.getParent() instanceof TmfExperimentElement)
 120             for (final TmfTraceElement trace : fTrace.getProject().getTracesFolder().getTraces())
 121                 if (trace.getName().equals(fTrace.getName())) {
 122                     fTrace = trace;
 123                     break;
 124                 }
 125
 126         final ITmfTrace trace = fTrace.instantiateTrace();
 127         final ITmfEvent traceEvent = fTrace.instantiateEvent();
 128         if ((trace == null) || (traceEvent == null)) {
 129             displayErrorMsg(Messages.OpenTraceHandler_NoTraceType);
 130             return null;
 131         }
 132
 133         // Get the editor_id from the extension point
 134         final String editorId = fTrace.getEditorId();
 135         final boolean usesEditor = (editorId != null) && (editorId.length() > 0);
 136
 137         try {
 138             trace.initTrace(fTrace.getResource(), fTrace.getLocation().getPath(), traceEvent.getClass());
 139         } catch (final FileNotFoundException e) {
 140             displayErrorMsg(Messages.OpenTraceHandler_NoTrace);
 141             return null;
 142         }
 143
 144         final IResource resource = fTrace.getResource();
 145         IFile file = null;
 146         if (resource instanceof IFile)
 147             file = (IFile) resource;
 148         else if (resource instanceof IFolder)
 149             try {
 150                 final IFile bookmarksFile = fTrace.getProject().getTracesFolder().getResource().getFile(BOOKMARKS_HIDDEN_FILE);
 151                 if (!bookmarksFile.exists()) {
 152                     final InputStream source = new ByteArrayInputStream(new byte[0]);
 153                     bookmarksFile.create(source, true, null);
 154                 }
 155                 bookmarksFile.setHidden(true);
 156
 157                 final IFolder folder = (IFolder) resource;
 158                 file = folder.getFile(fTrace.getName() + '_');
 159                 if (!file.exists())
 160                     file.createLink(bookmarksFile.getLocation(), IResource.REPLACE, null);
 161                 file.setHidden(true);
 162                 if (usesEditor)
 163                     file.setPersistentProperty(TmfTraceElement.TRACETYPE, fTrace.getTraceType());
 164                 else
 165                     file.setPersistentProperty(TmfTraceElement.TRACETYPE, TmfTrace.class.getCanonicalName());
 166             } catch (final CoreException e) {
 167                 e.printStackTrace();
 168             }
 169
 170         if (usesEditor)
 171             try {
 172                 final IEditorInput editorInput = new TmfEditorInput(file, trace);
 173                 final IWorkbench wb = PlatformUI.getWorkbench();
 174                 final IWorkbenchPage activePage = wb.getActiveWorkbenchWindow().getActivePage();
 175
 176                 final IEditorPart editor = activePage.findEditor(new FileEditorInput(file));
 177                 if ((editor != null) && (editor instanceof IReusableEditor)) {
 178                     activePage.reuseEditor((IReusableEditor) editor, editorInput);
 179                     activePage.activate(editor);
 180                 } else {
 181                     activePage.openEditor(editorInput, editorId);
 182                     if (resource instanceof IFile)
 183                         IDE.setDefaultEditor((IFile) resource, editorId);
 184                 }
 185             } catch (final PartInitException e) {
 186                 e.printStackTrace();
 187             }
 188         else {
 189             // Create the experiment
 190             final ITmfTrace[] traces = new ITmfTrace[] { trace };
 191             final TmfExperiment experiment = new TmfExperiment(traceEvent.getClass(), fTrace.getName(), traces, trace.getCacheSize());
 192             experiment.setBookmarksFile(file);
 193
 194             TmfExperiment.setCurrentExperiment(experiment);
 195             TmfSignalManager.dispatchSignal(new TmfExperimentSelectedSignal(this, experiment));
 196             IDE.setDefaultEditor(file, EventsViewEditor.ID);
 197         }
 198         return null;
 199     }
 200
 201     private void displayErrorMsg(final String errorMsg) {
 202         final MessageBox mb = new MessageBox(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
 203         mb.setText(Messages.OpenTraceHandler_Title);
 204         mb.setMessage(errorMsg);
 205         mb.open();
 206     }
 207
 208 }