Migrated source code from Simantics SVN

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

diff --git a/bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/ge/ObjectChildRule.java b/bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/ge/ObjectChildRule.java
new file mode 100644 (file)
index 0000000..76e3fe1
--- /dev/null
+++ b/bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/ge/ObjectChildRule.java
@@ -0,0 +1,110 @@
+package org.simantics.document.linking.ge;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.variable.StandardGraphChildVariable;\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
+\r
+/**\r
+ * A rule for browsing document links of an object. Properties are not included.\r
+ * \r
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>\r
+ *\r
+ */\r
+public class ObjectChildRule implements org.simantics.browsing.ui.model.children.ChildRule{\r
+       \r
+       private boolean showOnlyCheckable = false;\r
+       \r
+       @Override\r
+       public boolean isCompatible(Class<?> contentType) {\r
+               return contentType.equals(Resource.class) || contentType.equals(Variable.class);\r
+       }\r
+       \r
+       public void setShowOnlyCheckable(boolean showOnlyCheckable) {\r
+               this.showOnlyCheckable = showOnlyCheckable;\r
+       }\r
+       \r
+       @Override\r
+       public Collection<?> getChildren(ReadGraph graph, Object obj)\r
+                       throws DatabaseException {\r
+\r
+               ArrayList<Variable> children = new ArrayList<Variable>();\r
+               \r
+\r
+               Resource resource = null;\r
+               Variable variable = null;\r
+               if (obj instanceof Resource) {\r
+                       resource = (Resource)obj;\r
+                       try {\r
+                               variable = graph.adapt(resource, Variable.class);\r
+                       } catch (Throwable t) {\r
+                               return children;\r
+                       }\r
+                       children.add(new StandardGraphChildVariable(variable, null, resource));\r
+                       return children;\r
+               } else {\r
+                       variable = (Variable)obj;\r
+                       resource = variable.getPossibleRepresents(graph);\r
+               }\r
+               \r
+       \r
+               DocumentLink sl = DocumentLink.getInstance(graph);\r
+               if (graph.isInstanceOf(resource, sl.Source))\r
+                       return children;\r
+               \r
+               \r
+               //find sources declared on parentResource using consernsRelation\r
+               Variable parentVariable = variable.getParent(graph);\r
+               Resource parentRes = null;\r
+               Resource relation = null;\r
+               if (parentVariable != null) {\r
+                       parentRes = parentVariable.getPossibleRepresents(graph);\r
+                       relation = variable.getPossiblePredicateResource(graph);\r
+               }\r
+               \r
+               if (parentRes != null && relation != null) {\r
+                       Collection<Resource> sources = graph.getObjects(parentRes, sl.hasSource);\r
+                       for (Resource source : sources) {\r
+                               Resource rel = graph.getPossibleObject(source, sl.consernsRelation);\r
+                               if (rel != null && rel.equals(relation)) {\r
+                                       if (showOnlyCheckable && \r
+                                               (SourceLinkUtil.isValidSource(graph, source) &&\r
+                                                SourceLinkUtil.isUpToDateSource(graph, source)))\r
+                                               continue;\r
+                                       children.add(new StandardGraphChildVariable(variable, null, source));\r
+                               }\r
+                       }\r
+               }\r
+               //find sources declared on this resource, ie. sources that do not have consernsRelation.\r
+               Collection<Resource> sources = graph.getObjects(resource, sl.hasSource);\r
+               for (Resource source : sources) {\r
+                       Resource rel = graph.getPossibleObject(source, sl.consernsRelation);\r
+                       if (rel == null) {\r
+                               if (showOnlyCheckable && \r
+                                  (SourceLinkUtil.isValidSource(graph, source) &&\r
+                                   SourceLinkUtil.isUpToDateSource(graph, source)))\r
+                                       continue;\r
+                               children.add(new StandardGraphChildVariable(variable, null, source));\r
+                       }\r
+               }\r
+               while (children.remove(variable)) {\r
+                       \r
+               }\r
+               \r
+\r
+               return children;\r
+       }\r
+       \r
+       @Override\r
+       public Collection<?> getParents(ReadGraph graph, Object child)\r
+                       throws DatabaseException {\r
+               return new ArrayList<Resource>();\r
+       }\r
+\r
+}\r