Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.diagram / src / org / simantics / diagram / adapter / ElementFactoryUtil.java

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/ElementFactoryUtil.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/ElementFactoryUtil.java
new file mode 100644 (file)
index 0000000..c44d5df
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/ElementFactoryUtil.java
@@ -0,0 +1,120 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 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.diagram.adapter;\r
+\r
+import java.awt.geom.AffineTransform;\r
+\r
+import org.simantics.databoard.Bindings;\r
+import org.simantics.db.AsyncReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.procedure.adapter.AsyncProcedureAdapter;\r
+import org.simantics.db.procedure.AsyncProcedure;\r
+import org.simantics.diagram.stubs.G2DResource;\r
+import org.simantics.diagram.synchronization.ErrorHandler;\r
+import org.simantics.diagram.synchronization.ISynchronizationContext;\r
+import org.simantics.diagram.synchronization.SynchronizationHints;\r
+import org.simantics.diagram.synchronization.graph.DiagramGraphUtil;\r
+import org.simantics.diagram.synchronization.graph.GraphSynchronizationHints;\r
+import org.simantics.diagram.synchronization.graph.layer.GraphLayerManager;\r
+import org.simantics.g2d.diagram.DiagramHints;\r
+import org.simantics.g2d.diagram.IDiagram;\r
+import org.simantics.g2d.element.ElementUtils;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.layers.ILayersEditor;\r
+import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
+\r
+public class ElementFactoryUtil {\r
+\r
+    public static void readTransform(AsyncReadGraph graph, final Resource resource, final IElement e) {\r
+        readTransform(graph, resource, e, new AsyncProcedureAdapter<IElement>() {\r
+            @Override\r
+            public void exception(AsyncReadGraph graph, Throwable t) {\r
+                // Nowhere to log properly.\r
+                t.printStackTrace();\r
+            }\r
+        });\r
+    }\r
+\r
+    public static void readTransform(AsyncReadGraph graph, final Resource resource, final IElement e, final AsyncProcedure<IElement> procedure) {\r
+        G2DResource G2D = graph.getService(G2DResource.class);\r
+        graph.forPossibleRelatedValue(resource, G2D.HasTransform, Bindings.DOUBLE_ARRAY, new AsyncProcedure<double[]>() {\r
+            @Override\r
+            public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                procedure.exception(graph, throwable);\r
+            }\r
+\r
+            @Override\r
+            public void execute(AsyncReadGraph graph, double[] mat) {\r
+                mat = DiagramGraphUtil.validateAffineTransform(resource, mat);\r
+                AffineTransform tr = mat != null ? new AffineTransform(mat) : new AffineTransform();\r
+                ElementUtils.setTransform(e, tr);\r
+                procedure.execute(graph, e);\r
+            }\r
+        });\r
+    }\r
+\r
+    public static ISynchronizationContext getContext(IDiagram diagram) {\r
+        return diagram.getHint(SynchronizationHints.CONTEXT);\r
+    }\r
+\r
+    public static ISynchronizationContext getContextChecked(IDiagram diagram) {\r
+        ISynchronizationContext context = getContext(diagram);\r
+        if (context == null)\r
+            throw new IllegalStateException("diagram does not contain " + SynchronizationHints.CONTEXT + " hint");\r
+        return context;\r
+    }\r
+\r
+    public static ErrorHandler getErrorHandler(IDiagram diagram) {\r
+        ISynchronizationContext context = getContext(diagram);\r
+        if (context == null)\r
+            return null;\r
+        return context.get(SynchronizationHints.ERROR_HANDLER);\r
+    }\r
+\r
+    public static ErrorHandler getErrorHandlerChecked(IDiagram diagram) {\r
+        ISynchronizationContext context = getContextChecked(diagram);\r
+        ErrorHandler errorHandler = context.get(SynchronizationHints.ERROR_HANDLER);\r
+        if (errorHandler == null)\r
+            throw new IllegalStateException("synchronization context " + context + " does not contain " + SynchronizationHints.ERROR_HANDLER + " hint");\r
+        return errorHandler;\r
+    }\r
+\r
+    public static <T> T getContextHint(IDiagram diagram, Key key) {\r
+        ISynchronizationContext context = getContext(diagram);\r
+        if (context == null)\r
+            return null;\r
+        return context.get(key);\r
+    }\r
+\r
+    public static <T> T getContextHintChecked(IDiagram diagram, Key key) {\r
+        return getContextChecked(diagram).get(key);\r
+    }\r
+\r
+    public static void loadLayersForElement(AsyncReadGraph graph, IDiagram diagram, IElement e, Resource element,\r
+            AsyncProcedure<IElement> callback) {\r
+        final GraphLayerManager layerManager = getContextHint(diagram, GraphSynchronizationHints.GRAPH_LAYER_MANAGER);\r
+        if (layerManager != null)\r
+            loadLayersForElement(graph, layerManager, diagram, e, element, callback);\r
+        else\r
+            callback.execute(graph, e);\r
+    }\r
+\r
+    public static void loadLayersForElement(AsyncReadGraph graph, GraphLayerManager layerManager, IDiagram diagram, IElement e, Resource element,\r
+            AsyncProcedure<IElement> callback) {\r
+        final ILayersEditor layers = diagram.getHint(DiagramHints.KEY_LAYERS_EDITOR);\r
+        if (layers != null)\r
+            layerManager.loadLayersForElement(graph, layers, e, element, callback);\r
+        else\r
+            callback.execute(graph, e);\r
+    }\r
+\r
+}\r