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

   1 /*******************************************************************************
   2  * Copyright (c) 2009, 2013 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         if (part == null) {
  74             return false;
  75         }
  76         final ISelectionProvider selectionProvider = part.getSite().getSelectionProvider();
  77         if (selectionProvider == null) {
  78             return false;
  79         }
  80         final ISelection selection = selectionProvider.getSelection();
  81
  82         // Make sure there is only one selection and that it is a trace
  83         fTrace = null;
  84         if (selection instanceof TreeSelection) {
  85             final TreeSelection sel = (TreeSelection) selection;
  86             // There should be only one item selected as per the plugin.xml
  87             final Object element = sel.getFirstElement();
  88             if (element instanceof TmfTraceElement) {
  89                 fTrace = (TmfTraceElement) element;
  90             }
  91         }
  92
  93         // We only enable opening from the Traces folder for now
  94         return (fTrace != null);
  95     }
  96
  97     // ------------------------------------------------------------------------
  98     // Execution
  99     // ------------------------------------------------------------------------
 100
 101     @Override
 102     public Object execute(final ExecutionEvent event) throws ExecutionException {
 103
 104         // Check if we are closing down
 105         final IWorkbenchWindow window = PlatformUI.getWorkbench().getActiveWorkbenchWindow();
 106         if (window == null) {
 107             return null;
 108         }
 109
 110         // Check that the trace is valid
 111         if (fTrace == null) {
 112             return null;
 113         }
 114
 115         // If trace is under an experiment, use the original trace from the traces folder
 116         final TmfTraceElement traceElement = fTrace.getElementUnderTraceFolder();
 117
 118         Thread thread = new Thread() {
 119             @Override
 120             public void run() {
 121
 122                 final ITmfTrace trace = traceElement.instantiateTrace();
 123                 final ITmfEvent traceEvent = traceElement.instantiateEvent();
 124                 if ((trace == null) || (traceEvent == null)) {
 125                     displayErrorMsg(Messages.OpenTraceHandler_NoTraceType);
 126                     if (trace != null) {
 127                         trace.dispose();
 128                     }
 129                     return;
 130                 }
 131
 132                 // Get the editor_id from the extension point
 133                 String traceEditorId = traceElement.getEditorId();
 134                 final String editorId = (traceEditorId != null) ? traceEditorId : TmfEventsEditor.ID;
 135
 136                 try {
 137                     trace.initTrace(traceElement.getResource(), traceElement.getLocation().getPath(), traceEvent.getClass());
 138                 } catch (final TmfTraceException e) {
 139                     displayErrorMsg(Messages.OpenTraceHandler_InitError + "\n\n" + e); //$NON-NLS-1$
 140                     trace.dispose();
 141                     return;
 142                 }
 143
 144                 final IFile file;
 145                 try {
 146                     file = traceElement.createBookmarksFile();
 147                 } catch (final CoreException e) {
 148                     Activator.getDefault().logError("Error opening trace " + traceElement.getName(), e); //$NON-NLS-1$
 149                     displayErrorMsg(Messages.OpenTraceHandler_Error + "\n\n" + e.getMessage()); //$NON-NLS-1$
 150                     trace.dispose();
 151                     return;
 152                 }
 153
 154                 Display.getDefault().asyncExec(new Runnable() {
 155                     @Override
 156                     public void run() {
 157                         try {
 158                             final IEditorInput editorInput = new TmfEditorInput(file, trace);
 159                             final IWorkbench wb = PlatformUI.getWorkbench();
 160                             final IWorkbenchPage activePage = wb.getActiveWorkbenchWindow().getActivePage();
 161
 162                             final IEditorPart editor = activePage.findEditor(new FileEditorInput(file));
 163                             if ((editor != null) && (editor instanceof IReusableEditor)) {
 164                                 activePage.reuseEditor((IReusableEditor) editor, editorInput);
 165                                 activePage.activate(editor);
 166                             } else {
 167                                 activePage.openEditor(editorInput, editorId);
 168                                 IDE.setDefaultEditor(file, editorId);
 169                                 // editor should dispose the trace on close
 170                             }
 171                         } catch (final PartInitException e) {
 172                             displayErrorMsg(Messages.OpenTraceHandler_Error + "\n\n" + e.getMessage()); //$NON-NLS-1$
 173                             Activator.getDefault().logError("Error opening trace " + traceElement.getName(), e); //$NON-NLS-1$
 174                             trace.dispose();
 175                         }
 176                     }
 177                 });
 178
 179             }
 180         };
 181
 182         thread.start();
 183         return null;
 184     }
 185
 186     private static void displayErrorMsg(final String errorMsg) {
 187         Display.getDefault().asyncExec(new Runnable() {
 188             @Override
 189             public void run() {
 190                 final MessageBox mb = new MessageBox(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());
 191                 mb.setText(Messages.OpenTraceHandler_Title);
 192                 mb.setMessage(errorMsg);
 193                 mb.open();
 194             }
 195         });
 196     }
 197
 198 }