bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/property/TypicalPropertyTester.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2012 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.property;\r
  13 \r
  14 import org.eclipse.core.expressions.PropertyTester;\r
  15 import org.eclipse.ui.IEditorInput;\r
  16 import org.eclipse.ui.IEditorPart;\r
  17 import org.simantics.DatabaseJob;\r
  18 import org.simantics.Simantics;\r
  19 import org.simantics.db.ReadGraph;\r
  20 import org.simantics.db.RequestProcessor;\r
  21 import org.simantics.db.Resource;\r
  22 import org.simantics.db.Session;\r
  23 import org.simantics.db.common.request.UniqueRead;\r
  24 import org.simantics.db.common.utils.RequestUtil;\r
  25 import org.simantics.db.exception.DatabaseException;\r
  26 import org.simantics.diagram.stubs.DiagramResource;\r
  27 import org.simantics.modeling.ModelingResources;\r
  28 import org.simantics.ui.SimanticsUI;\r
  29 import org.simantics.ui.workbench.IResourceEditorInput;\r
  30 import org.simantics.utils.ui.ErrorLogger;\r
  31 \r
  32 /**\r
  33  * @author Tuukka Lehtonen\r
  34  */\r
  35 public class TypicalPropertyTester extends PropertyTester {\r
  36 \r
  37 \r
  38     /**\r
  39      * Tests if the received object is considered deletable.\r
  40      */\r
  41     private static final String IS_TYPICAL_MASTER_EDITOR = "isMasterEditor";\r
  42 \r
  43     /**\r
  44      * Tests if the received object is considered modifiable.\r
  45      */\r
  46     private static final String IS_TYPICAL_INSTANCE_EDITOR = "isInstanceEditor";\r
  47 \r
  48     @Override\r
  49     public boolean test(final Object receiver, final String property, final Object[] args, final Object expectedValue) {\r
  50         //System.out.println("TEST: " + receiver + ", " + property + ", " + Arrays.toString(args) + ", " + expectedValue);\r
  51 \r
  52         try {\r
  53             Session session = Simantics.peekSession();\r
  54             if (session == null)\r
  55                 return false;\r
  56 \r
  57             if (!(receiver instanceof IEditorPart))\r
  58                 return false;\r
  59             IEditorPart editor = (IEditorPart) receiver;\r
  60             IEditorInput in = editor.getEditorInput();\r
  61             if (!(in instanceof IResourceEditorInput))\r
  62                 return false;\r
  63             IResourceEditorInput input = (IResourceEditorInput) in;\r
  64             final Resource inputResource = input.getResource();\r
  65 \r
  66             if (DatabaseJob.inProgress()) {\r
  67                 // See Apros issue #9115\r
  68                 // Return true because it is often possible that the database\r
  69                 // will be busy when these properties are tested. In such cases\r
  70                 // the handlers/menu contributions using these tests would\r
  71                 // become disabled unless we return true here. It is up to the\r
  72                 // handlers to also make sure that their input is valid.\r
  73                 return true;\r
  74             }\r
  75 \r
  76             if (IS_TYPICAL_MASTER_EDITOR.equals(property)) {\r
  77                 return isTypicalMasterEditor(session, inputResource);\r
  78             } else if (IS_TYPICAL_INSTANCE_EDITOR.equals(property)) {\r
  79                 return isTypicalInstanceEditor(session, inputResource);\r
  80             }\r
  81         } catch (DatabaseException | InterruptedException e) {\r
  82             ErrorLogger.defaultLogError(e);\r
  83         }\r
  84 \r
  85         return false;\r
  86     }\r
  87 \r
  88     public static boolean isTypicalMasterEditor(RequestProcessor processor, final Resource editorInputResource) throws DatabaseException, InterruptedException {\r
  89         return RequestUtil.trySyncRequest(\r
  90                 Simantics.getSession(),\r
  91                 SimanticsUI.UI_THREAD_REQUEST_START_TIMEOUT,\r
  92                 SimanticsUI.UI_THREAD_REQUEST_EXECUTION_TIMEOUT,\r
  93                 false,\r
  94                 new UniqueRead<Boolean>() {\r
  95             @Override\r
  96             public Boolean perform(ReadGraph graph) throws DatabaseException {\r
  97                 ModelingResources MOD = ModelingResources.getInstance(graph);\r
  98                 Resource composite = graph.getPossibleObject(editorInputResource, MOD.DiagramToComposite);\r
  99                 return composite != null\r
 100                         && graph.isInstanceOf(composite, MOD.MasterTypicalCompositeType);\r
 101             }\r
 102         });\r
 103     }\r
 104 \r
 105     public static boolean isTypicalInstanceEditor(RequestProcessor processor, final Resource editorInputResource) throws DatabaseException, InterruptedException {\r
 106         return RequestUtil.trySyncRequest(\r
 107                 Simantics.getSession(),\r
 108                 SimanticsUI.UI_THREAD_REQUEST_START_TIMEOUT,\r
 109                 SimanticsUI.UI_THREAD_REQUEST_EXECUTION_TIMEOUT,\r
 110                 false,\r
 111                 new UniqueRead<Boolean>() {\r
 112             @Override\r
 113             public Boolean perform(ReadGraph graph) throws DatabaseException {\r
 114                 DiagramResource DIA = DiagramResource.getInstance(graph);\r
 115                 ModelingResources MOD = ModelingResources.getInstance(graph);\r
 116                 return graph.isInstanceOf(editorInputResource, DIA.Diagram)\r
 117                         && graph.hasStatement(editorInputResource, MOD.HasDiagramSource);\r
 118             }\r
 119         });\r
 120     }\r
 121 \r
 122 }\r