Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.selectionview / src / org / simantics / selectionview / StandardSelectionProcessor.java

diff --git a/bundles/org.simantics.selectionview/src/org/simantics/selectionview/StandardSelectionProcessor.java b/bundles/org.simantics.selectionview/src/org/simantics/selectionview/StandardSelectionProcessor.java
new file mode 100644 (file)
index 0000000..7b5cdf9
--- /dev/null
+++ b/bundles/org.simantics.selectionview/src/org/simantics/selectionview/StandardSelectionProcessor.java
@@ -0,0 +1,155 @@
+package org.simantics.selectionview;\r
+\r
+import java.util.ArrayList;\r
+import java.util.Collection;\r
+import java.util.Collections;\r
+import java.util.HashSet;\r
+import java.util.Set;\r
+\r
+import org.simantics.Logger;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.Resource;\r
+import org.simantics.db.common.request.PossibleIndexRoot;\r
+import org.simantics.db.common.utils.Functions;\r
+import org.simantics.db.common.utils.NameUtils;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.SelectionHints;\r
+import org.simantics.db.layer0.adapter.Instances;\r
+import org.simantics.db.layer0.request.VariableIndexRoot;\r
+import org.simantics.db.layer0.variable.Variable;\r
+import org.simantics.db.layer0.variable.Variables;\r
+import org.simantics.layer0.Layer0;\r
+import org.simantics.ui.selection.WorkbenchSelectionUtils;\r
+import org.simantics.utils.ui.ISelectionUtils;\r
+\r
+public class StandardSelectionProcessor implements SelectionProcessor<Object, ReadGraph> {\r
+\r
+       private static Resource getIndexRoot(ReadGraph graph, Object selection) throws DatabaseException {\r
+               \r
+               Variable variable = WorkbenchSelectionUtils.getPossibleVariable(graph, selection);\r
+               if (variable != null) {\r
+                       return graph.sync(new VariableIndexRoot(variable));\r
+               }\r
+               \r
+               variable = ISelectionUtils.filterSingleSelection(selection, Variable.class);\r
+               if (variable != null) {\r
+                       return graph.sync(new VariableIndexRoot(variable));\r
+               }\r
+               \r
+               Resource indexRoot = ISelectionUtils.getSinglePossibleKey(selection, SelectionHints.KEY_MODEL, Resource.class, false);\r
+               if (indexRoot == null) {\r
+                       Resource r = ISelectionUtils.getSinglePossibleKey(selection, SelectionHints.KEY_MAIN, Resource.class);\r
+                       if (r != null)\r
+                           indexRoot = graph.sync(new PossibleIndexRoot(r));\r
+               }\r
+\r
+               return indexRoot != null && graph.isInstanceOf(indexRoot, Layer0.getInstance(graph).IndexRoot) ? indexRoot : null;\r
+       }\r
+\r
+       @Override\r
+       public Collection<?> process(Object selection, ReadGraph graph) {\r
+               return processStatic(selection, graph);\r
+       }\r
+       \r
+       public static Collection<?> processStatic(Object selection, ReadGraph graph) {\r
+               \r
+               try {\r
+                       \r
+                       SelectionViewResources SEL = SelectionViewResources.getInstance(graph);\r
+                       Instances contributionFinder = graph.adapt(SEL.TabContribution, Instances.class);\r
+                       Instances transformationFinder = graph.adapt(SEL.SelectionTransformation, Instances.class);\r
+                       \r
+                       ArrayList<TabContribution<?>> contributions = new ArrayList<TabContribution<?>>();\r
+                       \r
+                       Resource index = getIndexRoot(graph, selection);\r
+                       if(index != null) {\r
+                       \r
+                               for(Resource r : contributionFinder.find(graph, index)) {\r
+                                       TabContribution<?> contribution = graph.adapt(r, TabContribution.class);\r
+                                       contributions.add(contribution);\r
+                                       if(DebugPolicy.DEBUG) System.err.println("-contribution " + graph.getURI(r));\r
+                               }\r
+\r
+                               ArrayList<Resource> transforms = new ArrayList<Resource>();\r
+                               transforms.addAll(transformationFinder.find(graph, index));\r
+                               if(DebugPolicy.DEBUG) {\r
+                                       for(Resource r : transforms)\r
+                                               System.err.println("-transform " + NameUtils.getSafeLabel(graph, r));\r
+                               }\r
+                               \r
+                               HashSet<Object> inputs = new HashSet<Object>();\r
+                               HashSet<Object> newInputs = new HashSet<Object>();\r
+                               inputs.add(selection);\r
+                               boolean changed = true;\r
+                               while(changed) {\r
+                                       for(Resource tr : transforms) {\r
+                                               for(Object input : inputs) {\r
+                                                       try {\r
+                                                               Object newInput = Functions.exec(graph, tr, graph, input);\r
+                                                               if(newInput != null)\r
+                                                                       newInputs.add(newInput);\r
+                                                       } catch (DatabaseException e) {\r
+                                                       }\r
+                                               }\r
+                                       }\r
+                                       changed = inputs.addAll(newInputs);\r
+                                       newInputs.clear();\r
+                               }\r
+                               \r
+\r
+                               if(DebugPolicy.DEBUG) {\r
+                                       for(Object o : inputs)\r
+                                               System.err.println("-input " + inputName(graph, o));\r
+                               }\r
+\r
+                               Set<ComparableTabContributor> result = new HashSet<ComparableTabContributor>();\r
+                               for(TabContribution c : contributions) {\r
+                                       for(Object input : inputs) {\r
+                                               try {\r
+                                                       if(DebugPolicy.DEBUG) {\r
+                                                               System.err.println("contribution: " + c);\r
+                                                               System.err.println("->input: " + input);\r
+                                                               System.err.println("->input name: " + inputName(graph, input));\r
+                                                       }\r
+                                                       if (c.accept(graph, input))\r
+                                                               c.contribute(graph, input, result);\r
+                                               } catch (ClassCastException e) {\r
+                                                       Logger.defaultLogError(e);\r
+                                               } catch (Exception e) {\r
+                                                       Logger.defaultLogError(e);\r
+                                               }\r
+                                       }\r
+                               }\r
+                               \r
+                               if(DebugPolicy.DEBUG) {\r
+                                       System.err.println("result: " + result);\r
+                               }\r
+                               \r
+                               return result;\r
+                       \r
+                       }\r
+                       \r
+               \r
+               } catch (DatabaseException e) {\r
+                       \r
+                       e.printStackTrace();\r
+                       \r
+               }\r
+        \r
+               return Collections.emptyList();\r
+               \r
+       }\r
+       \r
+       private static String inputName(ReadGraph graph, Object o) throws DatabaseException {\r
+               if(o instanceof Resource) {\r
+                       return "Resource: " + NameUtils.getURIOrSafeNameInternal(graph, (Resource)o);\r
+               } else if(o instanceof Variable) {\r
+                       return "Variable: " + ((Variable)o).getURI(graph) + " " + NameUtils.getSafeLabel(graph, (Resource)((Variable)o).getPossiblePropertyValue(graph, Variables.TYPE));\r
+        } else if(o instanceof SelectionInput) {\r
+            return "SelectionInput: " + o.toString();\r
+               } else {\r
+                       return "Object(" + o.getClass().getSimpleName() + "): " + o.toString();\r
+               }\r
+       }\r
+\r
+}\r