Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.diagram / src / org / simantics / diagram / query / ElementClassQuery.java

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/query/ElementClassQuery.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/query/ElementClassQuery.java
new file mode 100644 (file)
index 0000000..009f6d5
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/query/ElementClassQuery.java
@@ -0,0 +1,65 @@
+/*******************************************************************************\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.query;\r
+\r
+import org.simantics.db.AsyncReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.request.ResourceAsyncRead;\r
+import org.simantics.db.procedure.AsyncProcedure;\r
+import org.simantics.diagram.adapter.ElementFactory;\r
+import org.simantics.g2d.canvas.impl.DisposedCanvasContext;\r
+import org.simantics.g2d.diagram.IDiagram;\r
+import org.simantics.g2d.element.ElementClass;\r
+import org.simantics.utils.datastructures.hints.IHintObservable;\r
+\r
+public class ElementClassQuery extends ResourceAsyncRead<ElementClass> {\r
+\r
+    /**\r
+     * External hints for loading an element class.\r
+     */\r
+    IHintObservable hints;\r
+\r
+    public ElementClassQuery(Resource resource, IHintObservable hints) {\r
+        super(resource);\r
+        this.hints = hints;\r
+    }\r
+\r
+    @Override\r
+    public void perform(AsyncReadGraph graph, AsyncProcedure<ElementClass> procedure) {\r
+        graph.forAdapted(resource , ElementFactory.class, createElementClass(procedure));\r
+    }\r
+\r
+    private AsyncProcedure<ElementFactory> createElementClass(final AsyncProcedure<ElementClass> parent) {\r
+        return new AsyncProcedure<ElementFactory>() {\r
+            @Override\r
+            public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                parent.exception(graph, throwable);\r
+            }\r
+\r
+            @Override\r
+            public void execute(AsyncReadGraph graph, ElementFactory factory) {\r
+                // TODO: remove (IDiagram) cast\r
+                factory.create(graph, DisposedCanvasContext.INSTANCE, (IDiagram) hints, resource, new AsyncProcedure<ElementClass>() {\r
+                    @Override\r
+                    public void execute(AsyncReadGraph graph, ElementClass result) {\r
+                        parent.execute(graph, result);\r
+                    }\r
+                    @Override\r
+                    public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                        parent.exception(graph, throwable);\r
+                    }\r
+                });\r
+            }\r
+        };\r
+    }\r
+\r
+}\r