org.eclipse.tracecompass.rcp.ui/src/org/eclipse/linuxtools/internal/tracing/rcp/ui/Application.java

   1 /**********************************************************************
   2  * Copyright (c) 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  *   Bernd Hufmann - Initial API and implementation
  11  **********************************************************************/
  12 package org.eclipse.linuxtools.internal.tracing.rcp.ui;
  13
  14 import java.io.File;
  15 import java.net.URL;
  16 import java.text.MessageFormat;
  17
  18 import org.eclipse.core.runtime.Platform;
  19 import org.eclipse.equinox.app.IApplication;
  20 import org.eclipse.equinox.app.IApplicationContext;
  21 import org.eclipse.jface.dialogs.MessageDialog;
  22 import org.eclipse.linuxtools.internal.tracing.rcp.ui.messages.Messages;
  23 import org.eclipse.osgi.service.datalocation.Location;
  24 import org.eclipse.swt.widgets.Display;
  25 import org.eclipse.ui.IWorkbench;
  26 import org.eclipse.ui.PlatformUI;
  27
  28 /**
  29  * This class controls all aspects of the application's execution
  30  * @author Bernd Hufmann
  31  */
  32 public class Application implements IApplication {
  33
  34     private Location fInstanceLoc = null;
  35
  36     @Override
  37     public Object start(IApplicationContext context) throws Exception {
  38         Display display = PlatformUI.createDisplay();
  39         try {
  40             // fetch the Location that we will be modifying
  41             fInstanceLoc = Platform.getInstanceLocation();
  42
  43             // -data @noDefault in <applName>.ini allows us to set the workspace here.
  44             // If the user wants to change the location then he has to change
  45             // @noDefault to a specific location or remove -data @noDefault for
  46             // default location
  47             if (!fInstanceLoc.allowsDefault() && !fInstanceLoc.isSet()) {
  48                 File workspaceRoot = new File(TracingRcpPlugin.getWorkspaceRoot());
  49
  50                 if (!workspaceRoot.exists()) {
  51                     MessageDialog.openError(display.getActiveShell(),
  52                             Messages.Application_WorkspaceCreationError,
  53                             MessageFormat.format(Messages.Application_WorkspaceRootNotExistError, new Object[] { TracingRcpPlugin.getWorkspaceRoot() }));
  54                     return IApplication.EXIT_OK;
  55                 }
  56
  57                 if (!workspaceRoot.canWrite()) {
  58                     MessageDialog.openError(display.getActiveShell(),
  59                             Messages.Application_WorkspaceCreationError,
  60                             MessageFormat.format(Messages.Application_WorkspaceRootPermissionError, new Object[] { TracingRcpPlugin.getWorkspaceRoot() }));
  61                     return IApplication.EXIT_OK;
  62                 }
  63
  64                 String workspace = TracingRcpPlugin.getWorkspaceRoot() + File.separator + TracingRcpPlugin.WORKSPACE_NAME;
  65                 // set location to workspace
  66                 fInstanceLoc.set(new URL("file", null, workspace), false); //$NON-NLS-1$
  67             }
  68
  69             if (!fInstanceLoc.lock()) {
  70                 MessageDialog.openError(display.getActiveShell(),
  71                         Messages.Application_WorkspaceCreationError,
  72                         MessageFormat.format(Messages.Application_WorkspaceInUseError, new Object[] { fInstanceLoc.getURL().getPath() }));
  73                 return IApplication.EXIT_OK;
  74             }
  75
  76             int returnCode = PlatformUI.createAndRunWorkbench(display, new ApplicationWorkbenchAdvisor());
  77             if (returnCode == PlatformUI.RETURN_RESTART) {
  78                 return IApplication.EXIT_RESTART;
  79             }
  80             return IApplication.EXIT_OK;
  81         } finally {
  82             display.dispose();
  83         }
  84     }
  85
  86     @Override
  87     public void stop() {
  88         if (!PlatformUI.isWorkbenchRunning()) {
  89             return;
  90         }
  91         final IWorkbench workbench = PlatformUI.getWorkbench();
  92         final Display display = workbench.getDisplay();
  93         fInstanceLoc.release();
  94         display.syncExec(new Runnable() {
  95             @Override
  96             public void run() {
  97                 if (!display.isDisposed()) {
  98                     workbench.close();
  99                 }
 100             }
 101         });
 102     }
 103 }