Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/ConnectionRequest.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/ConnectionRequest.java
new file mode 100644 (file)
index 0000000..2529e43
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/ConnectionRequest.java
@@ -0,0 +1,121 @@
+/*******************************************************************************\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 org.simantics.db.AsyncReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.primitiverequest.Adapter;\r
+import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;\r
+import org.simantics.db.procedure.AsyncProcedure;\r
+import org.simantics.db.procedure.Listener;\r
+import org.simantics.diagram.synchronization.ErrorHandler;\r
+import org.simantics.g2d.canvas.ICanvasContext;\r
+import org.simantics.g2d.diagram.IDiagram;\r
+import org.simantics.g2d.element.ElementClass;\r
+import org.simantics.g2d.element.IElement;\r
+\r
+/**\r
+ * @author Antti Villberg\r
+ */\r
+public class ConnectionRequest extends BaseRequest2<Resource, IElement> {\r
+\r
+    final IDiagram diagram;\r
+    final Listener<IElement> loadListener;\r
+    final ErrorHandler errorHandler;\r
+\r
+    public ConnectionRequest(ICanvasContext canvas, IDiagram diagram, Resource resource, ErrorHandler errorHandler, Listener<IElement> loadListener) {\r
+        super(canvas, resource);\r
+        this.diagram = diagram;\r
+        this.errorHandler = errorHandler;\r
+        this.loadListener = loadListener;\r
+    }\r
+\r
+    @Override\r
+    public void perform(AsyncReadGraph graph, final AsyncProcedure<IElement> procedure) {\r
+\r
+        graph.forHasStatement(data, new AsyncProcedure<Boolean>() {\r
+\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, Boolean result) {\r
+\r
+                if (!result) {\r
+                    procedure.execute(graph, null);\r
+                    return;\r
+                }\r
+\r
+                graph.asyncRequest(new Adapter<ElementFactory>(data, ElementFactory.class), new TransientCacheAsyncListener<ElementFactory>() {\r
+\r
+                    @Override\r
+                    public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                        errorHandler.error("Unexpected ElementFactory adaption failure", throwable);\r
+                        procedure.execute(graph, null);\r
+                    }\r
+\r
+                    @Override\r
+                    public void execute(AsyncReadGraph graph, final ElementFactory factory) {\r
+\r
+                        graph.asyncRequest(new GetElementClassRequest(factory, data, canvas, diagram), new TransientCacheAsyncListener<ElementClass>() {\r
+\r
+                            @Override\r
+                            public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                                errorHandler.error("Unexpected ElementClass creation failure", throwable);\r
+                                procedure.execute(graph, null);\r
+                            }\r
+\r
+                            @Override\r
+                            public void execute(AsyncReadGraph graph, final ElementClass ec) {\r
+\r
+                                graph.asyncRequest(new SpawnRequest(canvas, ec, data), new TransientCacheAsyncListener<IElement>() {\r
+\r
+                                    @Override\r
+                                    public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                                        errorHandler.error("Unexpected SpawnRequest failure", throwable);\r
+                                        procedure.execute(graph, null);\r
+                                    }\r
+\r
+                                    @Override\r
+                                    public void execute(AsyncReadGraph graph, IElement element) {\r
+\r
+                                        procedure.execute(graph, element);\r
+\r
+                                        if (loadListener != null) {\r
+                                            //System.out.println("LoadRequest[" + (loadCounter++) + "] for " + data + ": " + element);\r
+                                            graph.asyncRequest(new LoadRequest(canvas, diagram, factory, ec, data), loadListener);\r
+                                        } else {\r
+                                            //System.out.println("Spawn[" + (spawnCounter++) + "] for " + data + ": " + element);\r
+                                            factory.load(graph, canvas, diagram, data, element, new AsyncProcedure<IElement>() {\r
+                                                @Override\r
+                                                public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                                                    errorHandler.error("Unexpected ElementFactory.load failure", throwable);\r
+                                                }\r
+                                                @Override\r
+                                                public void execute(AsyncReadGraph graph, IElement result) {\r
+                                                    // Loading complete, don't care.\r
+                                                }\r
+                                            });\r
+                                        }\r
+                                    }\r
+                                });\r
+                            }\r
+                        });\r
+                    }\r
+                });\r
+            }\r
+        });\r
+    }\r
+\r
+}\r