bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/modelBrowser/handlers/DeleteNodeHandler.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.modeling.ui.modelBrowser.handlers;\r
  13 \r
  14 import java.lang.reflect.InvocationTargetException;\r
  15 import java.util.Set;\r
  16 \r
  17 import org.eclipse.core.commands.AbstractHandler;\r
  18 import org.eclipse.core.commands.ExecutionEvent;\r
  19 import org.eclipse.core.commands.ExecutionException;\r
  20 import org.eclipse.core.runtime.IProgressMonitor;\r
  21 import org.eclipse.core.runtime.IStatus;\r
  22 import org.eclipse.core.runtime.Status;\r
  23 import org.eclipse.jface.dialogs.ProgressMonitorDialog;\r
  24 import org.eclipse.jface.operation.IRunnableWithProgress;\r
  25 import org.eclipse.jface.viewers.ISelection;\r
  26 import org.eclipse.swt.widgets.Shell;\r
  27 import org.eclipse.ui.handlers.HandlerUtil;\r
  28 import org.simantics.browsing.ui.NodeContext;\r
  29 import org.simantics.browsing.ui.common.node.DeleteException;\r
  30 import org.simantics.browsing.ui.common.node.IDeletable;\r
  31 import org.simantics.browsing.ui.common.node.IDeletableNode;\r
  32 import org.simantics.db.Resource;\r
  33 import org.simantics.db.WriteGraph;\r
  34 import org.simantics.db.common.request.WriteRequest;\r
  35 import org.simantics.db.exception.DatabaseException;\r
  36 import org.simantics.db.layer0.exception.CannotRemoveException;\r
  37 import org.simantics.db.layer0.util.RemoverUtil;\r
  38 import org.simantics.modeling.ui.Activator;\r
  39 import org.simantics.modeling.ui.modelBrowser.model.INode;\r
  40 import org.simantics.modeling.ui.modelBrowser.model.INode2;\r
  41 import org.simantics.ui.SimanticsUI;\r
  42 import org.simantics.utils.logging.TimeLogger;\r
  43 import org.simantics.utils.ui.ErrorLogger;\r
  44 import org.simantics.utils.ui.ISelectionUtils;\r
  45 import org.simantics.utils.ui.dialogs.ShowMessage;\r
  46 \r
  47 /**\r
  48  * @author Tuukka Lehtonen\r
  49  */\r
  50 public class DeleteNodeHandler extends AbstractHandler {\r
  51 \r
  52     @Override\r
  53     public Object execute(ExecutionEvent event) throws ExecutionException {\r
  54         TimeLogger.resetTimeAndLog(getClass(), "execute");\r
  55         \r
  56         Shell shell = HandlerUtil.getActiveShellChecked(event);\r
  57         ISelection sel = HandlerUtil.getCurrentSelection(event);\r
  58         Set<NodeContext> ctxs = ISelectionUtils.filterSetSelection(sel, NodeContext.class);\r
  59         if (ctxs.isEmpty())\r
  60             return null;\r
  61 \r
  62         if (ctxs.size() == 1 && handleLegacyDelete(ctxs.iterator().next())) {\r
  63             return null;\r
  64         }\r
  65 \r
  66         // If all selected nodes are IDeletableNodes, delete them.\r
  67         final Set<IDeletableNode> deletableNodes = ISelectionUtils.filterSetSelection(ctxs, IDeletableNode.class);\r
  68         if (!deletableNodes.isEmpty()) {\r
  69             // Only delete if all selected nodes are IDeletableNodes\r
  70             if (deletableNodes.size() == ctxs.size()) {\r
  71                 inJob(shell, new IRunnableWithProgress() {\r
  72                     @Override\r
  73                     public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {\r
  74                         monitor.beginTask("Delete selected nodes", IProgressMonitor.UNKNOWN);\r
  75                         try {\r
  76                             for (IDeletableNode deletableNode : deletableNodes) {\r
  77                                 deletableNode.delete();\r
  78                             }\r
  79                         } catch (DeleteException e) {\r
  80                             throw new InvocationTargetException(e);\r
  81                         }\r
  82                     }\r
  83                 });\r
  84             }\r
  85         } else {\r
  86             final Set<Resource> rs = ISelectionUtils.filterSetSelection(ctxs, Resource.class);\r
  87             if (rs.size() == ctxs.size()) {\r
  88                 inJob(shell, new IRunnableWithProgress() {\r
  89                     @Override\r
  90                     public void run(IProgressMonitor monitor) throws InvocationTargetException, InterruptedException {\r
  91                         monitor.beginTask("Delete selected nodes", IProgressMonitor.UNKNOWN);\r
  92                         try {\r
  93                             RemoverUtil.tryCollectionRemover(rs);\r
  94                         } catch (CannotRemoveException e) {\r
  95                                 ShowMessage.showInformation("Delete Selection Was Denied", e.getLocalizedMessage());\r
  96                         } catch (DatabaseException e) {\r
  97                             throw new InvocationTargetException(e);\r
  98                         }\r
  99                     }\r
 100                 });\r
 101             }\r
 102         }\r
 103 \r
 104         TimeLogger.log("Node deleted");\r
 105         return null;\r
 106     }\r
 107 \r
 108     private void inJob(Shell shell, final IRunnableWithProgress runnable) {\r
 109         ProgressMonitorDialog dialog = new ProgressMonitorDialog(shell);\r
 110         try {\r
 111             dialog.run(true, false, runnable);\r
 112         } catch (InvocationTargetException e) {\r
 113             Activator.getDefault().getLog().log( new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Delete failed, see exception for details.", e.getCause()) );\r
 114         } catch (InterruptedException e) {\r
 115             Activator.getDefault().getLog().log( new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Delete failed, see exception for details.", e.getCause()) );\r
 116         }\r
 117 //        Job job = new Job("Delete selection") {\r
 118 //            @Override\r
 119 //            protected IStatus run(IProgressMonitor monitor) {\r
 120 //                monitor.beginTask("Delete selected nodes", IProgressMonitor.UNKNOWN);\r
 121 //                try {\r
 122 //                    runnable.run(monitor);\r
 123 //                    return Status.OK_STATUS;\r
 124 //                } catch (InvocationTargetException e) {\r
 125 //                    return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Delete failed, see exception for details.", e.getCause());\r
 126 //                } catch (Exception e) {\r
 127 //                    return new Status(IStatus.ERROR, Activator.PLUGIN_ID, "Delete failed, see exception for details.", e);\r
 128 //                } finally {\r
 129 //                    monitor.done();\r
 130 //                }\r
 131 //            }\r
 132 //        };\r
 133 //        job.setUser(true);\r
 134 //        job.setRule(new ObjectIdentitySchedulingRule(schedulingObject));\r
 135 //        job.schedule();\r
 136     }\r
 137 \r
 138
 139     /**\r
 140      * @param ctx\r
 141      * @return\r
 142      */\r
 143     private boolean handleLegacyDelete(NodeContext ctx) {\r
 144         if (ctx.getAdapter(IDeletable.class) == null) {\r
 145             return false;\r
 146         }\r
 147 \r
 148         final INode node = (INode) ctx.getAdapter(INode.class);\r
 149         if (node != null) {\r
 150             SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
 151                 @Override\r
 152                 public void perform(WriteGraph graph) throws DatabaseException {\r
 153                     node.handleDelete(graph);\r
 154                 }\r
 155             });\r
 156             return true;\r
 157         }\r
 158 \r
 159         INode2 node2 = (INode2) ctx.getAdapter(INode2.class);\r
 160         if (node2 != null) {\r
 161             try {\r
 162                 node2.handleDelete();\r
 163             } catch (DeleteException e) {\r
 164                 ShowMessage.showError("Delete failed", e.getMessage());\r
 165                 ErrorLogger.defaultLogError(e);\r
 166             }\r
 167             return true;\r
 168         }\r
 169 \r
 170         // Could not handle with legacy logic.\r
 171         return false;\r
 172     }\r
 173 \r
 174 }\r