INTEGRATION: CWS vcl07 (1.9.2); FILE ADDED

2003/04/08 14:28:51 obr 1.9.2.1: re-added accessibility workbench

1 files changed, 140 insertions, 0 deletions

diff --git a/toolkit/test/accessibility/NodeHandler.java b/toolkit/test/accessibility/NodeHandler.java
new file mode 100644
index 000000000000..0de70e62adaf
--- /dev/null
+++ b/toolkit/test/accessibility/NodeHandler.java
@@ -0,0 +1,140 @@
+import java.util.Vector;
+
+
+/**
+ * Map an arbitrary object into parts of a tree node.
+ */
+abstract class NodeHandler
+{
+    /** This vector is used as cache for the child objects.
+    */
+    protected Vector maChildList;
+
+
+    public abstract NodeHandler createHandler (
+        drafts.com.sun.star.accessibility.XAccessibleContext xContext);
+
+    public NodeHandler ()
+    {
+        maChildList = new Vector ();
+    }
+
+    /** Clear the cache of child objects.
+    */
+    public void clear ()
+    {
+        synchronized (maChildList)
+        {
+            maChildList = new Vector ();
+        }
+    }
+
+    /** This factory method creates an individual handler for the specified
+        object that may hold information to accelerate the access to its children.
+    */
+    //    public abstract NodeHandler createHandler (Object aObject);
+
+    /** return the number of children this object has */
+    public int getChildCount(Object aObject)
+    {
+        synchronized (maChildList)
+        {
+            return maChildList.size();
+        }
+    }
+
+    /**
+     * return a child object. Complex
+     * children have to be AccTreeNode instances.
+     * @see AccTreeNode
+     */
+    public AccessibleTreeNode getChild (AccessibleTreeNode aParent, int nIndex)
+    {
+        synchronized (maChildList)
+        {
+            AccessibleTreeNode aChild = (AccessibleTreeNode)maChildList.get(nIndex);
+            if (aChild == null)
+            {
+                aChild = createChild (aParent, nIndex);
+                if (aChild == null)
+                    aChild = new StringNode ("could not create child", aParent);
+                maChildList.setElementAt (aChild, nIndex);
+            }
+            return aChild;
+        }
+    }
+
+    public AccessibleTreeNode getChildNoCreate (AccessibleTreeNode aParent, int nIndex)
+    {
+        synchronized (maChildList)
+        {
+            return (AccessibleTreeNode)maChildList.get(nIndex);
+        }
+    }
+
+    /** Remove the specified child from the list of children.
+    */
+    public boolean removeChild (AccessibleTreeNode aNode, int nIndex)
+    {
+        try
+        {
+            synchronized (maChildList)
+            {
+                System.out.println ("    removing child at position " + nIndex + ": "
+                    + maChildList.elementAt (nIndex));
+                maChildList.remove (nIndex);
+            }
+        }
+        catch (Exception e)
+        {
+            return false;
+        }
+        return true;
+    }
+
+    public int indexOf (AccessibleTreeNode aNode)
+    {
+        synchronized (maChildList)
+        {
+            return maChildList.indexOf (aNode);
+        }
+    }
+
+    /** Create a child object for the specified data.  This method is called
+        usually from getChild and put there into the cache.
+    */
+    public abstract AccessibleTreeNode createChild (
+        AccessibleTreeNode aParent, int nIndex);
+
+    //
+    // The following methods support editing of children and actions.
+    // They have default implementations for no actions and read-only.
+    //
+
+    /** May this child be changed? */
+    public boolean isChildEditable (AccessibleTreeNode aNode, int nIndex)
+    {
+        return false;
+    }
+
+    /** change this child's value */
+    //    public void setChild(Object aObject, int nIndex) { }
+
+
+    /** get names of suported actions */
+    public String[] getActions (AccessibleTreeNode aNode)
+    {
+        return new String[] {};
+    }
+
+    /** perform action */
+    public void performAction (AccessibleTreeNode aNode, int nIndex)
+    {
+    }
+
+    /** Update all children.
+    */
+    public void update (AccessibleTreeNode aNode)
+    {
+    }
+}