bundles/org.simantics.ui/src/org/simantics/ui/workbench/handler/e4/SessionRedoHandler.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007- VTT Technical Research Centre of Finland.\r
   3  * All rights reserved. This program and the accompanying materials\r
   4  * are made available under the terms of the Eclipse Public License v1.0\r
   5  * which accompanies this distribution, and is available at\r
   6  * http://www.eclipse.org/legal/epl-v10.html\r
   7  *\r
   8  * Contributors:\r
   9  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  10  *******************************************************************************/\r
  11 package org.simantics.ui.workbench.handler.e4;\r
  12 \r
  13 import java.lang.reflect.InvocationTargetException;\r
  14 import java.util.List;\r
  15 import java.util.concurrent.atomic.AtomicReference;\r
  16 \r
  17 import org.eclipse.core.commands.ExecutionException;\r
  18 import org.eclipse.core.runtime.IProgressMonitor;\r
  19 import org.eclipse.e4.core.contexts.Active;\r
  20 import org.eclipse.e4.core.di.annotations.CanExecute;\r
  21 import org.eclipse.e4.core.di.annotations.Execute;\r
  22 import org.eclipse.e4.ui.model.application.ui.basic.MPart;\r
  23 import org.eclipse.jface.action.IStatusLineManager;\r
  24 import org.eclipse.jface.dialogs.ProgressMonitorDialog;\r
  25 import org.eclipse.jface.operation.IRunnableWithProgress;\r
  26 import org.eclipse.swt.widgets.Shell;\r
  27 import org.eclipse.ui.IWorkbenchPart;\r
  28 import org.eclipse.ui.PlatformUI;\r
  29 import org.simantics.Simantics;\r
  30 import org.simantics.db.ChangeSetIdentifier;\r
  31 import org.simantics.db.Operation;\r
  32 import org.simantics.db.Session;\r
  33 import org.simantics.db.exception.DatabaseException;\r
  34 import org.simantics.db.exception.NoHistoryException;\r
  35 import org.simantics.db.service.ManagementSupport;\r
  36 import org.simantics.db.service.UndoRedoSupport;\r
  37 import org.simantics.utils.ui.workbench.WorkbenchUtils;\r
  38 \r
  39 /**\r
  40  * @author Kalle Kondelin\r
  41  */\r
  42 public class SessionRedoHandler {\r
  43 \r
  44     private final boolean DEBUG = false;\r
  45 \r
  46     @CanExecute\r
  47     public boolean canExecute() {\r
  48         return UndoRedoTester.canRedo();\r
  49     }\r
  50     \r
  51     @Execute\r
  52     public void execute(@Active MPart activePart) throws ExecutionException {\r
  53         if (DEBUG)\r
  54             System.out.println("--\nRedo handler called.");\r
  55 \r
  56         if (activePart == null)\r
  57             return;\r
  58         final Session session = Simantics.peekSession();\r
  59         if (session == null)\r
  60             return;\r
  61 \r
  62         try {\r
  63             final AtomicReference<String> msg = new AtomicReference<String>();\r
  64             IRunnableWithProgress redo = new IRunnableWithProgress() {\r
  65                 @Override\r
  66                 public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {\r
  67                     try {\r
  68                         monitor.beginTask("Redo", IProgressMonitor.UNKNOWN);\r
  69                         msg.set( redo( session ) );\r
  70                     } catch (NoHistoryException e) {\r
  71                         msg.set("Nothing to redo.");\r
  72                     } catch (DatabaseException e) {\r
  73                         throw new InvocationTargetException(e);\r
  74                     } finally {\r
  75                         monitor.done();\r
  76                     }\r
  77                 }\r
  78             };\r
  79 \r
  80             // busyCursorWhile does not work because locking the session for undo\r
  81             // will also lock the UI completely.\r
  82             //PlatformUI.getWorkbench().getProgressService().busyCursorWhile(undo);\r
  83             Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();\r
  84             new ProgressMonitorDialog(shell).run(true, false, redo);\r
  85             \r
  86             //\r
  87             // TODO Not the Eclipse 4 way of using IStatusLineManager!\r
  88             // See:\r
  89             // https://bugs.eclipse.org/bugs/show_bug.cgi?id=332499\r
  90             // https://www.eclipse.org/forums/index.php?t=msg&th=367379&goto=941232&#msg_941232\r
  91             //\r
  92             IWorkbenchPart part = WorkbenchUtils.getActiveWorkbenchPart();\r
  93             IStatusLineManager manager = WorkbenchUtils.getStatusLine(part);\r
  94             manager.setMessage(msg.get());\r
  95 //            actionBars.getStatusLineManager().setMessage( msg.get() );\r
  96         } catch (InvocationTargetException e1) {\r
  97             throw new ExecutionException("Redo failed, database failure.", e1.getTargetException());\r
  98         } catch (InterruptedException e1) {\r
  99             throw new ExecutionException("Redo failed, interrupted.", e1);\r
 100         }\r
 101         return;\r
 102     }\r
 103 \r
 104     private String redo(Session session) throws DatabaseException {\r
 105         UndoRedoSupport support = session.getService(UndoRedoSupport.class);\r
 106         List<Operation> ops = support.redo(session, 1);\r
 107         if(ops.isEmpty())\r
 108             return "Nothing to redo.";\r
 109         \r
 110         Operation mainOperation = ops.get(0);\r
 111         \r
 112         String msg = null;\r
 113         long csId = mainOperation.getCSId();\r
 114 \r
 115         ManagementSupport management = session.getService(ManagementSupport.class);\r
 116         for(ChangeSetIdentifier id : management.getChangeSetIdentifiers(csId, csId))\r
 117             if(msg == null)\r
 118                 msg = "Redid: " + SessionUndoHandler.getComment(session, id);\r
 119 \r
 120         if (DEBUG)\r
 121             System.out.println(msg);\r
 122         return msg;\r
 123     }\r
 124 \r
 125 }\r