Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/EdgeRequest.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/EdgeRequest.java
new file mode 100644 (file)
index 0000000..bcc4243
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/adapter/EdgeRequest.java
@@ -0,0 +1,122 @@
+/*******************************************************************************\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.common.procedure.adapter.ListenerSupport;\r
+import org.simantics.db.common.procedure.adapter.TransientCacheAsyncListener;\r
+import org.simantics.db.procedure.AsyncProcedure;\r
+import org.simantics.diagram.content.EdgeResource;\r
+import org.simantics.diagram.stubs.DiagramResource;\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.ElementHints;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.impl.Element;\r
+\r
+/**\r
+ * @author Antti Villberg\r
+ */\r
+public class EdgeRequest extends BaseRequest2<EdgeResource, IElement> {\r
+\r
+    final ErrorHandler errorHandler;\r
+    final ListenerSupport listenerSupport;\r
+    final IDiagram diagram;\r
+    final ConnectionSegmentAdapter adapter;\r
+\r
+    public EdgeRequest(ICanvasContext canvas, ErrorHandler errorHandler, ListenerSupport listenerSupport, IDiagram diagram, ConnectionSegmentAdapter adapter, EdgeResource resource) {\r
+        super(canvas, resource);\r
+\r
+        assert(adapter != null);\r
+\r
+        this.errorHandler = errorHandler;\r
+        this.listenerSupport = listenerSupport;\r
+        this.diagram = diagram;\r
+        this.adapter = adapter;\r
+    }\r
+\r
+    @Override\r
+    public void perform(AsyncReadGraph graph, final AsyncProcedure<IElement> procedure) {\r
+//        final ITask task = ThreadLogger.getInstance().begin("NodeRequest2 " + data.getResourceId());\r
+        final DiagramResource dr = graph.getService(DiagramResource.class);\r
+\r
+        graph.forHasStatement(data.first(), 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
+                if (!result) {\r
+                    procedure.execute(graph, null);\r
+                    return;\r
+                }\r
+\r
+                graph.asyncRequest(new ConnectionInfoRequest(dr, data), new TransientCacheAsyncListener<ConnectionInfo>() {\r
+\r
+                    @Override\r
+                    public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                        errorHandler.error("ConnectionInfoRequest failure", throwable);\r
+                    }\r
+\r
+                    @Override\r
+                    public void execute(AsyncReadGraph graph, final ConnectionInfo info) {\r
+                        adapter.getClass(graph, data, info, listenerSupport, canvas, diagram, new AsyncProcedure<ElementClass>() {\r
+                            @Override\r
+                            public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                                errorHandler.error("ConnectionSegmentAdapter(" + adapter + ").getClass failure", throwable);\r
+                            }\r
+\r
+                            @Override\r
+                            public void execute(AsyncReadGraph graph, final ElementClass clazz) {\r
+                                if (clazz == null) {\r
+                                    procedure.execute(graph, null);\r
+                                    return;\r
+                                }\r
+\r
+//                                final ITask task = ThreadLogger.getInstance().begin("SpawnEdge");\r
+                                graph.asyncRequest(new SpawnEdgeRequest(canvas, clazz, data), new AsyncProcedure<IElement>() {\r
+                                    @Override\r
+                                    public void exception(AsyncReadGraph graph, Throwable throwable) {\r
+                                        errorHandler.error("SpawnEdgeRequest failure", throwable);\r
+                                    }\r
+\r
+                                    @Override\r
+                                    public void execute(AsyncReadGraph graph, IElement element) {\r
+//                                        task.finish();\r
+                                        // Tell the procedure to use this element\r
+                                        procedure.execute(graph, element);\r
+\r
+                                        // Create a separate element for\r
+                                        // loading the edge which\r
+                                        // will then be updated into\r
+                                        // element by the listener in\r
+                                        // the connection segment adapter.\r
+                                        IElement loadingElement = Element.spawnNew(clazz);\r
+                                        loadingElement.setHint(ElementHints.KEY_OBJECT, data);\r
+\r
+                                        adapter.load(graph, data, info, listenerSupport, canvas, diagram, loadingElement);\r
+                                    }\r
+                                });\r
+                            }\r
+                        });\r
+                    }\r
+                });\r
+            }\r
+        });\r
+    }\r
+\r
+}\r