Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.document.linking.ui / src / org / simantics / document / linking / ge / SourceObjectDropAction.java

diff --git a/bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/ge/SourceObjectDropAction.java b/bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/ge/SourceObjectDropAction.java
new file mode 100644 (file)
index 0000000..818447c
--- /dev/null
+++ b/bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/ge/SourceObjectDropAction.java
@@ -0,0 +1,91 @@
+package org.simantics.document.linking.ge;\r
+\r
+import org.eclipse.jface.dialogs.MessageDialog;\r
+import org.eclipse.swt.widgets.Display;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.WriteGraph;\r
+import org.simantics.db.common.request.WriteRequest;\r
+import org.simantics.db.common.utils.NameUtils;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.adapter.DropActionFactory;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.document.linking.ontology.DocumentLink;\r
+import org.simantics.document.linking.utils.SourceLinkUtil;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.ui.SimanticsUI;\r
+import org.simantics.utils.ui.AdaptionUtils;\r
+\r
+public class SourceObjectDropAction implements DropActionFactory {\r
+       \r
+       \r
+       @Override\r
+       public Runnable create(ReadGraph g, Object target, Object source, int operation)\r
+                       throws DatabaseException {\r
+               Variable t = (Variable)target;\r
+        Resource s = AdaptionUtils.adaptToSingle(source, Resource.class);\r
+        if (s == null) {\r
+               Variable sv = AdaptionUtils.adaptToSingle(source, Variable.class);\r
+               if (sv != null)\r
+                       s = sv.getRepresents(g);\r
+        }\r
+\r
+        if(t == null || s == null)\r
+            return null;\r
+        DocumentLink sl = DocumentLink.getInstance(g);\r
+        if (g.isInstanceOf(s, sl.Source)) {\r
+               return null;\r
+        }\r
+               return getRunnable(t, s);\r
+       }\r
+       \r
+       private Runnable getRunnable(final Variable tv, final Resource s) {\r
+               return new Runnable() {\r
+                       \r
+                       @Override\r
+                       public void run() {\r
+                               SimanticsUI.getSession().asyncRequest(new WriteRequest() {\r
+                                       \r
+                                       @Override\r
+                                       public void perform(WriteGraph graph) throws DatabaseException {\r
+                                               Layer0 l0 = Layer0.getInstance(graph);\r
+                                               \r
+                                               Resource relation = tv.getPossiblePredicateResource(graph);\r
+                                               Resource instance; \r
+                                               if (relation != null && graph.isInstanceOf(relation, l0.FunctionalRelation)) {\r
+                                                       instance = tv.getParent(graph).getPossibleRepresents(graph);\r
+                                               } else {\r
+                                                       instance = tv.getPossibleRepresents(graph);\r
+                                               }\r
+                                               if (instance == null)\r
+                                                       return;\r
+                                               \r
+                                               try {\r
+                                                       SourceLinkUtil.createDocumentLink(graph, instance, relation, s);\r
+                                               } catch (final DatabaseException e) {\r
+                                                       String l = NameUtils.getSafeLabel(graph, s);\r
+                                                       if (l.length() == 0)\r
+                                                               l = NameUtils.getSafeName(graph, s);\r
+                                                       final String label = l;\r
+                                                       Display.getDefault().asyncExec(new Runnable() {\r
+                                                               \r
+                                                               @Override\r
+                                                               public void run() {\r
+                                                                       String dialogMessage = "Cannot create document link to \"" + label +"\":" + e.getMessage();\r
+                                                                       MessageDialog dialog = new MessageDialog(Display.getCurrent().getActiveShell(), "Document Link", null, dialogMessage, MessageDialog.INFORMATION, new String[]{"OK"}, 0); \r
+                                                                       dialog.open();\r
+                                                               }\r
+                                                       });\r
+                                               }\r
+                                       }\r
+                               });\r
+                               \r
+                       }\r
+               };\r
+               \r
+       }\r
+       \r
+       \r
+       \r
+       \r
+}\r