Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.modeling.ui / src / org / simantics / modeling / ui / ExpandNodeHandler.java

diff --git a/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/ExpandNodeHandler.java b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/ExpandNodeHandler.java
new file mode 100644 (file)
index 0000000..c5553a2
--- /dev/null
+++ b/bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/ExpandNodeHandler.java
@@ -0,0 +1,74 @@
+package org.simantics.modeling.ui;\r
+\r
+import java.util.Arrays;\r
+import java.util.Comparator;\r
+\r
+import org.simantics.browsing.ui.BuiltinKeys;\r
+import org.simantics.browsing.ui.GraphExplorer;\r
+import org.simantics.browsing.ui.NodeContext;\r
+import org.simantics.browsing.ui.PrimitiveQueryProcessor;\r
+import org.simantics.browsing.ui.common.processors.IsExpandedProcessor;\r
+import org.simantics.db.ReadGraph;\r
+import org.simantics.db.exception.DatabaseException;\r
+import org.simantics.db.layer0.SelectionHints;\r
+import org.simantics.ui.DoubleClickEvent;\r
+import org.simantics.ui.IDoubleClickAction;\r
+import org.simantics.ui.workbench.action.IWorkbenchActionHints;\r
+import org.simantics.ui.workbench.editor.EditorAdapter;\r
+import org.simantics.ui.workbench.editor.EditorRegistry;\r
+import org.simantics.utils.ui.ISelectionUtils;\r
+import org.simantics.utils.ui.action.IPriorityAction;\r
+import org.simantics.utils.ui.action.PriorityAction;\r
+\r
+/**\r
+ * @author Tuukka Lehtonen\r
+ */\r
+public class ExpandNodeHandler implements IDoubleClickAction {\r
+\r
+    @Override\r
+    public void doubleClickEvent(DoubleClickEvent e) throws DatabaseException {\r
+        ReadGraph g = e.getGraph();\r
+        final NodeContext node = ISelectionUtils.getSinglePossibleKey(e.getResource(), SelectionHints.KEY_MAIN, NodeContext.class);\r
+        if (node == null)\r
+            return;\r
+\r
+        Object widget = e.getHintContext().getHint(IWorkbenchActionHints.KEY_WIDGET);\r
+        if (!(widget instanceof GraphExplorer))\r
+            return;\r
+        final GraphExplorer explorer = (GraphExplorer) widget;\r
+\r
+        EditorAdapter[] editorAdapters = EditorRegistry.getInstance().getAdaptersFor(g, node);\r
+\r
+        Arrays.sort(editorAdapters, new Comparator<EditorAdapter>() {\r
+            @Override\r
+            public int compare(EditorAdapter o1, EditorAdapter o2) {\r
+                // Sort in descending priority order\r
+                return -(o1.getPriority() - o2.getPriority());\r
+            }\r
+        });\r
+\r
+        // If editor selection is unanimous, use the editor. Otherwise just expand/collapse the clicked node.\r
+        if (editorAdapters.length == 0) {\r
+            e.add(expandAction(explorer, node));\r
+            e.consume();\r
+        } else if (editorAdapters.length > 1 && editorAdapters[0].getPriority() == editorAdapters[1].getPriority()) {\r
+            e.add(expandAction(explorer, node));\r
+            e.consume();\r
+        }\r
+    }\r
+\r
+    private IPriorityAction expandAction(final GraphExplorer explorer, final NodeContext node) {\r
+        return new PriorityAction(100) {\r
+            @Override\r
+            public void run() {\r
+                PrimitiveQueryProcessor<?> pqp = explorer.getPrimitiveProcessor(BuiltinKeys.IS_EXPANDED);\r
+                if (pqp instanceof IsExpandedProcessor) {\r
+                    IsExpandedProcessor iep = (IsExpandedProcessor) pqp;\r
+                    boolean expanded = iep.getExpanded(node);\r
+                    iep.replaceExpanded(node, !expanded);\r
+                }\r
+            }\r
+        };\r
+    }\r
+\r
+}\r