Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.views.swt / src / org / simantics / views / swt / SWTViewLoaderProcess.java

diff --git a/bundles/org.simantics.views.swt/src/org/simantics/views/swt/SWTViewLoaderProcess.java b/bundles/org.simantics.views.swt/src/org/simantics/views/swt/SWTViewLoaderProcess.java
new file mode 100644 (file)
index 0000000..f5c4d83
--- /dev/null
+++ b/bundles/org.simantics.views.swt/src/org/simantics/views/swt/SWTViewLoaderProcess.java
@@ -0,0 +1,111 @@
+package org.simantics.views.swt;\r
+\r
+import org.eclipse.ui.IWorkbenchSite;\r
+import org.simantics.Simantics;\r
+import org.simantics.browsing.ui.common.ErrorLogger;\r
+import org.simantics.browsing.ui.graph.impl.GraphInputSources;\r
+import org.simantics.browsing.ui.graph.impl.InputSourceListener;\r
+import org.simantics.browsing.ui.graph.impl.ObservableInputSource;\r
+import org.simantics.browsing.ui.graph.impl.SessionContextInputSource;\r
+import org.simantics.browsing.ui.graph.impl.WorkbenchSessionContextInputSource;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.RequestProcessor;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.request.UniqueRead;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.db.layer0.variable.VariableRepository;\r
+import org.simantics.db.layer0.variable.Variables;\r
+import org.simantics.scenegraph.INode;\r
+import org.simantics.scenegraph.loader.ScenegraphLoaderProcess;\r
+import org.simantics.views.ontology.ViewsResources;\r
+import org.simantics.views.swt.client.base.SWTRoot;\r
+\r
+public class SWTViewLoaderProcess extends ScenegraphLoaderProcess {\r
+\r
+       final private ModelledView view;\r
+       final private IWorkbenchSite site;\r
+       \r
+       public static class ISL implements InputSourceListener {\r
+               \r
+               private SWTViewLoaderProcess process;\r
+               \r
+               ISL(SWTViewLoaderProcess process) {\r
+                       this.process = process;\r
+               }\r
+               \r
+               void dispose() {\r
+                       process = null;\r
+               }\r
+               \r
+        @Override\r
+        public void inputChanged(SessionContextInputSource source) {\r
+               if(process == null) return;\r
+            Object input = source.get( Simantics.getSessionContext() );\r
+            if (input != null)\r
+                process.view.inputChanged(source.getProvider(), input);\r
+            else\r
+                ErrorLogger.defaultLogWarning("input source " + source + " invalidly returned null", new Exception("for stack trace only"));\r
+        }\r
+       };\r
+       \r
+    ISL inputSourceListener = new ISL(this);\r
+       \r
+       public SWTViewLoaderProcess(ModelledView view, IWorkbenchSite site, String name) {\r
+               super(name);\r
+               this.view = view;\r
+               this.site = site;\r
+               this.root = new SWTRoot(site);\r
+       }\r
+\r
+       public SWTViewLoaderProcess(ModelledView view, IWorkbenchSite site) {\r
+               this(view, site, "<unnamed SWTViewLoaderProcess>");\r
+       }\r
+\r
+       @Override\r
+       public INode getRoot() {\r
+               return root;\r
+       }\r
+       \r
+       @Override\r
+       protected void initialize(RequestProcessor processor, final Variable configuration) throws DatabaseException {\r
+               \r
+               SessionContextInputSource inputSource = processor.sync(new UniqueRead<SessionContextInputSource>() {\r
+                       @Override\r
+                       public SessionContextInputSource perform(ReadGraph graph) throws DatabaseException {\r
+                               ViewsResources VIEW = ViewsResources.getInstance(graph);\r
+                               Resource represents = configuration.getRepresents(graph);\r
+                               Resource inputSource = graph.getPossibleObject(represents, VIEW.HasInputSource);\r
+                               if (inputSource == null)\r
+                                       return GraphInputSources.projectSource();\r
+                               return graph.adapt(inputSource, SessionContextInputSource.class);\r
+                       }\r
+               });\r
+\r
+        if(view != null)\r
+            view.setInputSource(inputSource);\r
+\r
+        if (inputSource instanceof ObservableInputSource)\r
+            ((ObservableInputSource) inputSource).setListener(inputSourceListener);\r
+\r
+        if (inputSource instanceof WorkbenchSessionContextInputSource)\r
+                       ((WorkbenchSessionContextInputSource) inputSource).init(site, view);\r
+\r
+       }\r
+       \r
+       @Override\r
+       public void dispose() {\r
+               \r
+               if (isDisposed())\r
+                       return;\r
+               \r
+               inputSourceListener.dispose();\r
+               for(String uri : registeredURIs) VariableRepository.unregister(uri);\r
+               SWTRoot r = (SWTRoot)root;\r
+               r.dispose();\r
+               \r
+               super.dispose();\r
+               \r
+       }\r
+\r
+}\r