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 org.eclipse.core.commands.AbstractHandler;
  16 import org.eclipse.core.commands.ExecutionEvent;
  17 import org.eclipse.core.commands.ExecutionException;
  18 import org.eclipse.core.resources.IFile;
  19 import org.eclipse.core.runtime.CoreException;
  20 import org.eclipse.jface.viewers.ISelection;
  21 import org.eclipse.jface.viewers.ISelectionProvider;
  22 import org.eclipse.jface.viewers.TreeSelection;
  23 import org.eclipse.linuxtools.internal.tmf.ui.Activator;
  24 import org.eclipse.linuxtools.tmf.core.event.ITmfEvent;
  25 import org.eclipse.linuxtools.tmf.core.exceptions.TmfTraceException;
  26 import org.eclipse.linuxtools.tmf.core.trace.ITmfTrace;
  27 import org.eclipse.linuxtools.tmf.ui.editors.TmfEditorInput;
  28 import org.eclipse.linuxtools.tmf.ui.editors.TmfEventsEditor;
  29 import org.eclipse.linuxtools.tmf.ui.project.model.TmfTraceElement;
  30 import org.eclipse.swt.widgets.Display;
  31 import org.eclipse.swt.widgets.MessageBox;
  32 import org.eclipse.ui.IEditorInput;
  33 import org.eclipse.ui.IEditorPart;
  34 import org.eclipse.ui.IReusableEditor;
  35 import org.eclipse.ui.IWorkbench;
  36 import org.eclipse.ui.IWorkbenchPage;
  37 import org.eclipse.ui.IWorkbenchPart;
  38 import org.eclipse.ui.IWorkbenchWindow;
  39 import org.eclipse.ui.PartInitException;
  40 import org.eclipse.ui.PlatformUI;
  41 import org.eclipse.ui.ide.IDE;
  42 import org.eclipse.ui.part.FileEditorInput;
  43
  44 /**
  45  * <b><u>OpenTraceHandler</u></b>
  46  * <p>
  47  * TODO: Add support for multiple trace selection
  48  */
  49 public class OpenTraceHandler extends AbstractHandler {
  50
  51     // ------------------------------------------------------------------------
  52     // Attributes
  53     // ------------------------------------------------------------------------
  54
  55     private TmfTraceElement fTrace = null;
  56
  57     // ------------------------------------------------------------------------
  58     // Validation
  59     // ------------------------------------------------------------------------
  60
  61     @Override
  62     public boolean isEnabled() {
  63
  64         // Check if we are closing down
  65         final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
  66         if (window == null) {
  67             return false;
  68         }
  69
  70         // Get the selection
  71         final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
  72         final IWorkbenchPart part = page.getActivePart();
  73         final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
  74         if (selectionProvider == null) {
  75             return false;
  76         }
  77         final ISelection selection = selectionProvider.getSelection();
  78
  79         // Make sure there is only one selection and that it is a trace
  80         fTrace = null;
  81         if (selection instanceof TreeSelection) {
  82             final TreeSelection sel = (TreeSelection) selection;
  83             // There should be only one item selected as per the plugin.xml
  84             final Object element = sel.getFirstElement();
  85             if (element instanceof TmfTraceElement) {
  86                 fTrace = (TmfTraceElement) element;
  87             }
  88         }
  89
  90         // We only enable opening from the Traces folder for now
  91         return (fTrace != null);
  92     }
  93
  94     // ------------------------------------------------------------------------
  95     // Execution
  96     // ------------------------------------------------------------------------
  97
  98     @Override
  99     public Object execute(final ExecutionEvent event) throws ExecutionException {
 100
 101         // Check if we are closing down
 102         final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
 103         if (window == null) {
 104             return null;
 105         }
 106
 107         // Check that the trace is valid
 108         if (fTrace == null) {
 109             return null;
 110         }
 111
 112         // If trace is under an experiment, use the original trace from the traces folder
 113         final TmfTraceElement traceElement = fTrace.getElementUnderTraceFolder();
 114
 115         Thread thread = new Thread() {
 116             @Override
 117             public void run() {
 118
 119                 final ITmfTrace trace = traceElement.instantiateTrace();
 120                 final ITmfEvent traceEvent = traceElement.instantiateEvent();
 121                 if ((trace == null) || (traceEvent == null)) {
 122                     displayErrorMsg(Messages.OpenTraceHandler_NoTraceType);
 123                     if (trace != null) {
 124                         trace.dispose();
 125                     }
 126                     return;
 127                 }
 128
 129                 // Get the editor_id from the extension point
 130                 String traceEditorId = traceElement.getEditorId();
 131                 final String editorId = (traceEditorId != null) ? traceEditorId : TmfEventsEditor.ID;
 132
 133                 try {
 134                     trace.initTrace(traceElement.getResource(), traceElement.getLocation().getPath(), traceEvent.getClass());
 135                 } catch (final TmfTraceException e) {
 136                     displayErrorMsg(Messages.OpenTraceHandler_InitError + "\n\n" + e); //$NON-NLS-1$
 137                     trace.dispose();
 138                     return;
 139                 }
 140
 141                 final IFile file;
 142                 try {
 143                     file = traceElement.getBookmarksFile();
 144                 } catch (final CoreException e) {
 145                     Activator.getDefault().logError("Error opening trace " + traceElement.getName(), e); //$NON-NLS-1$
 146                     displayErrorMsg(Messages.OpenTraceHandler_Error + "\n\n" + e.getMessage()); //$NON-NLS-1$
 147                     trace.dispose();
 148                     return;
 149                 }
 150
 151                 Display.getDefault().asyncExec(new Runnable() {
 152                     @Override
 153                     public void run() {
 154                         try {
 155                             final IEditorInput editorInput = new TmfEditorInput(file, trace);
 156                             final IWorkbench wb = PlatformUI.getWorkbench();
 157                             final IWorkbenchPage activePage = wb.getActiveWorkbenchWindow().getActivePage();
 158
 159                             final IEditorPart editor = activePage.findEditor(new FileEditorInput(file));
 160                             if ((editor != null) && (editor instanceof IReusableEditor)) {
 161                                 activePage.reuseEditor((IReusableEditor) editor, editorInput);
 162                                 activePage.activate(editor);
 163                             } else {
 164                                 activePage.openEditor(editorInput, editorId);
 165                                 IDE.setDefaultEditor(file, editorId);
 166                                 // editor should dispose the trace on close
 167                             }
 168                         } catch (final PartInitException e) {
 169                             displayErrorMsg(Messages.OpenTraceHandler_Error + "\n\n" + e.getMessage()); //$NON-NLS-1$
 170                             Activator.getDefault().logError("Error opening trace " + traceElement.getName(), e); //$NON-NLS-1$
 171                             trace.dispose();
 172                         }
 173                     }
 174                 });
 175
 176             }
 177         };
 178
 179         thread.start();
 180         return null;
 181     }
 182
 183     private static void displayErrorMsg(final String errorMsg) {
 184         Display.getDefault().asyncExec(new Runnable() {
 185             @Override
 186             public void run() {
 187                 final MessageBox mb = new MessageBox(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
 188                 mb.setText(Messages.OpenTraceHandler_Title);
 189                 mb.setMessage(errorMsg);
 190                 mb.open();
 191             }
 192         });
 193     }
 194
 195 }