Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.graphfile / src / org / simantics / graphfile / adapters / SystemResourcePasteHandler.java

diff --git a/bundles/org.simantics.graphfile/src/org/simantics/graphfile/adapters/SystemResourcePasteHandler.java b/bundles/org.simantics.graphfile/src/org/simantics/graphfile/adapters/SystemResourcePasteHandler.java
new file mode 100644 (file)
index 0000000..83e4558
--- /dev/null
+++ b/bundles/org.simantics.graphfile/src/org/simantics/graphfile/adapters/SystemResourcePasteHandler.java
@@ -0,0 +1,134 @@
+/*******************************************************************************\r
+ * Copyright (c) 2013 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.graphfile.adapters;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+import java.util.HashSet;\r
+import java.util.Set;\r
+\r
+import org.simantics.Simantics;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.adapter.PasteHandlerAdapter;\r
+import org.simantics.db.layer0.util.ClipboardUtils;\r
+import org.simantics.db.layer0.util.PasteEventHandler;\r
+import org.simantics.db.layer0.util.RemoverUtil;\r
+import org.simantics.db.layer0.util.SimanticsClipboard;\r
+import org.simantics.db.layer0.util.SimanticsClipboard.Representation;\r
+import org.simantics.db.layer0.util.SimanticsKeys;\r
+import org.simantics.graph.db.IImportAdvisor;\r
+import org.simantics.graph.db.TransferableGraphException;\r
+import org.simantics.graph.db.TransferableGraphs;\r
+import org.simantics.graph.representation.TransferableGraph1;\r
+\r
+public class SystemResourcePasteHandler  extends PasteHandlerAdapter  \r
+\r
+{\r
+       private Resource resource;\r
+\r
+    public SystemResourcePasteHandler(Resource resource) {\r
+        this.resource = resource;\r
+    }\r
+\r
+    public static void defaultExecute(TransferableGraph1 tg, Resource resource, IImportAdvisor advisor) throws DatabaseException, TransferableGraphException {\r
+        TransferableGraphs.importGraph1(Simantics.getSession(), tg, advisor);\r
+    }\r
+\r
+    public static void defaultExecute(WriteGraph graph, TransferableGraph1 tg, Resource resource, IImportAdvisor advisor) throws DatabaseException {\r
+        TransferableGraphs.importGraph1(graph, tg, advisor);\r
+    }\r
+\r
+    public void execute(WriteGraph graph, TransferableGraph1 tg, Resource resource, IImportAdvisor advisor) throws DatabaseException {\r
+       defaultExecute(graph, tg, resource, advisor);\r
+    }\r
+\r
+    /**\r
+     * Override this in your inherited class if post processing is done.\r
+     */\r
+    public void onPasteBegin(WriteGraph graph) throws DatabaseException {\r
+    }\r
+\r
+    /**\r
+     * Override this in your inherited class if post processing is done\r
+     * advisor.getTarget() returns an object under which data is copied\r
+     * advisor.getRoot() returns the object which have been pasted.\r
+     * @param representations TODO\r
+     */\r
+    public void onPaste(WriteGraph graph, SystemResourcePasteImportAdvisor advisor, Set<Representation> representations) throws DatabaseException {\r
+       advisor.attachRoot(graph);\r
+    }\r
+\r
+    /**\r
+     * Override this in your inherited class if post processing is done.\r
+     */\r
+    public void onPasteEnd(WriteGraph graph) throws DatabaseException{\r
+    }\r
+\r
+    public Collection<Resource> pasteObject(WriteGraph graph, Set<Representation> object) throws DatabaseException {\r
+       Collection<Resource> result = new ArrayList<Resource>();\r
+        TransferableGraph1 tg = ClipboardUtils.accept(graph, object, SimanticsKeys.KEY_TRANSFERABLE_GRAPH);\r
+        if (tg != null) {\r
+           SystemResourcePasteImportAdvisor advisor = new SystemResourcePasteImportAdvisor(graph, resource); \r
+            execute(graph, tg, resource, advisor);\r
+            result.add(advisor.getRoot());\r
+            try {\r
+                onPaste(graph, advisor, object);\r
+            } catch (Throwable e) {\r
+            }\r
+        }\r
+        return result;\r
+    }\r
+\r
+    @Override\r
+    public Collection<Resource> pasteFromClipboard(WriteGraph graph, SimanticsClipboard clipboard, PasteEventHandler handler) throws DatabaseException {\r
+       \r
+       Collection<Resource> result = new ArrayList<Resource>();\r
+       \r
+        try {\r
+            onPasteBegin(graph);\r
+        } catch (Throwable e) {\r
+        }\r
+\r
+        final Set<Resource> cuts = new HashSet<Resource>();\r
+        for(Set<Representation> object : clipboard.getContents()) {\r
+            result.addAll(pasteObject(graph, object));\r
+            Collection<Resource> cut = ClipboardUtils.accept(object, SimanticsKeys.KEY_CUT_RESOURCES);\r
+            if (cut != null)\r
+                cuts.addAll(cut);\r
+        }\r
+\r
+        try {\r
+            onPasteEnd(graph);\r
+        } catch (Throwable e) {\r
+        }\r
+\r
+        if(!cuts.isEmpty()) {\r
+               for (Resource cut : cuts)\r
+                       RemoverUtil.remove(graph, cut);\r
+        }\r
+        \r
+        return result;\r
+        \r
+    }\r
+\r
+    @SuppressWarnings("rawtypes")\r
+    @Override\r
+    public Object getAdapter(Class adapter) {\r
+        if(Resource.class == adapter) return resource;\r
+        return null;\r
+    }\r
+\r
+       \r
+\r
+}\r