toolkit/test/accessibility/GeometryEventHandler.java

   1 import com.sun.star.accessibility.XAccessible;
   2 import com.sun.star.accessibility.AccessibleEventObject;
   3 import com.sun.star.uno.UnoRuntime;
   4
   5 import java.io.PrintStream;
   6 import java.util.LinkedList;
   7
   8 class GeometryEventHandler
   9     extends EventHandler
  10 {
  11     public GeometryEventHandler (AccessibleEventObject aEvent, AccessibilityTreeModel aTreeModel)
  12     {
  13         super (aEvent, aTreeModel);
  14     }
  15
  16     public void PrintOldAndNew (PrintStream out)
  17     {
  18         out.println ("   children not relevant");
  19     }
  20
  21     public void Process ()
  22     {
  23         AccTreeNode aNode = maTreeModel.updateNode (mxEventSource,
  24             AccessibleComponentHandler.class,
  25             AccessibleExtendedComponentHandler.class);
  26
  27         // Update the graphical representation of aNode in the Canvas.
  28         Canvas aCanvas = maTreeModel.getCanvas();
  29         if (aCanvas != null)
  30         {
  31             // Iterate over all nodes in the sub-tree rooted in aNode.
  32             LinkedList aShapeQueue = new LinkedList();
  33             aShapeQueue.addLast (aNode);
  34             while (aShapeQueue.size() > 0)
  35             {
  36                 // Remove the first node from the queue and update its
  37                 // graphical representation.
  38                 AccTreeNode aShapeNode = (AccTreeNode) aShapeQueue.getFirst();
  39                 aShapeQueue.removeFirst();
  40                 aCanvas.updateNodeGeometry (aShapeNode);
  41
  42                 // Add the node's children to the queue.
  43                 int nChildCount = maTreeModel.getChildCount (aShapeNode);
  44                 for (int i=0; i<nChildCount; i++)
  45                 {
  46                     Object aTreeNode = maTreeModel.getChildNoCreate (aShapeNode, i);
  47                     if (aTreeNode instanceof AccTreeNode)
  48                         aShapeQueue.addLast (aTreeNode);
  49                 }
  50             }
  51             aCanvas.repaint ();
  52         }
  53     }
  54 }