X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=bundles%2Forg.simantics.document.linking.ui%2Fsrc%2Forg%2Fsimantics%2Fdocument%2Flinking%2Fge%2FSourceObjectDropAction.java;fp=bundles%2Forg.simantics.document.linking.ui%2Fsrc%2Forg%2Fsimantics%2Fdocument%2Flinking%2Fge%2FSourceObjectDropAction.java;h=818447c43616a3c880260e843e27f7c433159a5f;hb=969bd23cab98a79ca9101af33334000879fb60c5;hp=0000000000000000000000000000000000000000;hpb=866dba5cd5a3929bbeae85991796acb212338a08;p=simantics%2Fplatform.git

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
index 000000000..818447c43
--- /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;
+
+import org.eclipse.jface.dialogs.MessageDialog;
+import org.eclipse.swt.widgets.Display;
+import org.simantics.db.ReadGraph;
+import org.simantics.db.Resource;
+import org.simantics.db.WriteGraph;
+import org.simantics.db.common.request.WriteRequest;
+import org.simantics.db.common.utils.NameUtils;
+import org.simantics.db.exception.DatabaseException;
+import org.simantics.db.layer0.adapter.DropActionFactory;
+import org.simantics.db.layer0.variable.Variable;
+import org.simantics.document.linking.ontology.DocumentLink;
+import org.simantics.document.linking.utils.SourceLinkUtil;
+import org.simantics.layer0.Layer0;
+import org.simantics.ui.SimanticsUI;
+import org.simantics.utils.ui.AdaptionUtils;
+
+public class SourceObjectDropAction implements DropActionFactory {
+	
+	
+	@Override
+	public Runnable create(ReadGraph g, Object target, Object source, int operation)
+			throws DatabaseException {
+		Variable t = (Variable)target;
+        Resource s = AdaptionUtils.adaptToSingle(source, Resource.class);
+        if (s == null) {
+        	Variable sv = AdaptionUtils.adaptToSingle(source, Variable.class);
+        	if (sv != null)
+        		s = sv.getRepresents(g);
+        }
+
+        if(t == null || s == null)
+            return null;
+        DocumentLink sl = DocumentLink.getInstance(g);
+        if (g.isInstanceOf(s, sl.Source)) {
+        	return null;
+        }
+		return getRunnable(t, s);
+	}
+	
+	private Runnable getRunnable(final Variable tv, final Resource s) {
+		return new Runnable() {
+			
+			@Override
+			public void run() {
+				SimanticsUI.getSession().asyncRequest(new WriteRequest() {
+					
+					@Override
+					public void perform(WriteGraph graph) throws DatabaseException {
+						Layer0 l0 = Layer0.getInstance(graph);
+						
+						Resource relation = tv.getPossiblePredicateResource(graph);
+						Resource instance; 
+						if (relation != null && graph.isInstanceOf(relation, l0.FunctionalRelation)) {
+							instance = tv.getParent(graph).getPossibleRepresents(graph);
+						} else {
+							instance = tv.getPossibleRepresents(graph);
+						}
+						if (instance == null)
+							return;
+						
+						try {
+							SourceLinkUtil.createDocumentLink(graph, instance, relation, s);
+						} catch (final DatabaseException e) {
+							String l = NameUtils.getSafeLabel(graph, s);
+							if (l.length() == 0)
+								l = NameUtils.getSafeName(graph, s);
+							final String label = l;
+							Display.getDefault().asyncExec(new Runnable() {
+								
+								@Override
+								public void run() {
+									String dialogMessage = "Cannot create document link to \"" + label +"\":" + e.getMessage();
+									MessageDialog dialog = new MessageDialog(Display.getCurrent().getActiveShell(), "Document Link", null, dialogMessage, MessageDialog.INFORMATION, new String[]{"OK"}, 0); 
+									dialog.open();
+								}
+							});
+						}
+					}
+				});
+				
+			}
+		};
+		
+	}
+	
+	
+	
+	
+}