Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.modeling.ui / src / org / simantics / modeling / ui / property / TypicalPropertyTester.java

diff --git a/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/property/TypicalPropertyTester.java b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/property/TypicalPropertyTester.java
new file mode 100644 (file)
index 0000000..06d6bda
--- /dev/null
+++ b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/property/TypicalPropertyTester.java
@@ -0,0 +1,122 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2012 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.modeling.ui.property;\r
+\r
+import org.eclipse.core.expressions.PropertyTester;\r
+import org.eclipse.ui.IEditorInput;\r
+import org.eclipse.ui.IEditorPart;\r
+import org.simantics.DatabaseJob;\r
+import org.simantics.Simantics;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.RequestProcessor;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.Session;\r
+import org.simantics.db.common.request.UniqueRead;\r
+import org.simantics.db.common.utils.RequestUtil;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.diagram.stubs.DiagramResource;\r
+import org.simantics.modeling.ModelingResources;\r
+import org.simantics.ui.SimanticsUI;\r
+import org.simantics.ui.workbench.IResourceEditorInput;\r
+import org.simantics.utils.ui.ErrorLogger;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class TypicalPropertyTester extends PropertyTester {\r
+\r
+\r
+    /**\r
+     * Tests if the received object is considered deletable.\r
+     */\r
+    private static final String IS_TYPICAL_MASTER_EDITOR = "isMasterEditor";\r
+\r
+    /**\r
+     * Tests if the received object is considered modifiable.\r
+     */\r
+    private static final String IS_TYPICAL_INSTANCE_EDITOR = "isInstanceEditor";\r
+\r
+    @Override\r
+    public boolean test(final Object receiver, final String property, final Object[] args, final Object expectedValue) {\r
+        //System.out.println("TEST: " + receiver + ", " + property + ", " + Arrays.toString(args) + ", " + expectedValue);\r
+\r
+        try {\r
+            Session session = Simantics.peekSession();\r
+            if (session == null)\r
+                return false;\r
+\r
+            if (!(receiver instanceof IEditorPart))\r
+                return false;\r
+            IEditorPart editor = (IEditorPart) receiver;\r
+            IEditorInput in = editor.getEditorInput();\r
+            if (!(in instanceof IResourceEditorInput))\r
+                return false;\r
+            IResourceEditorInput input = (IResourceEditorInput) in;\r
+            final Resource inputResource = input.getResource();\r
+\r
+            if (DatabaseJob.inProgress()) {\r
+                // See Apros issue #9115\r
+                // Return true because it is often possible that the database\r
+                // will be busy when these properties are tested. In such cases\r
+                // the handlers/menu contributions using these tests would\r
+                // become disabled unless we return true here. It is up to the\r
+                // handlers to also make sure that their input is valid.\r
+                return true;\r
+            }\r
+\r
+            if (IS_TYPICAL_MASTER_EDITOR.equals(property)) {\r
+                return isTypicalMasterEditor(session, inputResource);\r
+            } else if (IS_TYPICAL_INSTANCE_EDITOR.equals(property)) {\r
+                return isTypicalInstanceEditor(session, inputResource);\r
+            }\r
+        } catch (DatabaseException | InterruptedException e) {\r
+            ErrorLogger.defaultLogError(e);\r
+        }\r
+\r
+        return false;\r
+    }\r
+\r
+    public static boolean isTypicalMasterEditor(RequestProcessor processor, final Resource editorInputResource) throws DatabaseException, InterruptedException {\r
+        return RequestUtil.trySyncRequest(\r
+                Simantics.getSession(),\r
+                SimanticsUI.UI_THREAD_REQUEST_START_TIMEOUT,\r
+                SimanticsUI.UI_THREAD_REQUEST_EXECUTION_TIMEOUT,\r
+                false,\r
+                new UniqueRead<Boolean>() {\r
+            @Override\r
+            public Boolean perform(ReadGraph graph) throws DatabaseException {\r
+                ModelingResources MOD = ModelingResources.getInstance(graph);\r
+                Resource composite = graph.getPossibleObject(editorInputResource, MOD.DiagramToComposite);\r
+                return composite != null\r
+                        && graph.isInstanceOf(composite, MOD.MasterTypicalCompositeType);\r
+            }\r
+        });\r
+    }\r
+\r
+    public static boolean isTypicalInstanceEditor(RequestProcessor processor, final Resource editorInputResource) throws DatabaseException, InterruptedException {\r
+        return RequestUtil.trySyncRequest(\r
+                Simantics.getSession(),\r
+                SimanticsUI.UI_THREAD_REQUEST_START_TIMEOUT,\r
+                SimanticsUI.UI_THREAD_REQUEST_EXECUTION_TIMEOUT,\r
+                false,\r
+                new UniqueRead<Boolean>() {\r
+            @Override\r
+            public Boolean perform(ReadGraph graph) throws DatabaseException {\r
+                DiagramResource DIA = DiagramResource.getInstance(graph);\r
+                ModelingResources MOD = ModelingResources.getInstance(graph);\r
+                return graph.isInstanceOf(editorInputResource, DIA.Diagram)\r
+                        && graph.hasStatement(editorInputResource, MOD.HasDiagramSource);\r
+            }\r
+        });\r
+    }\r
+\r
+}\r