toolkit/test/accessibility/NodeFactory.java

   1 /*
   2  * This file is part of the LibreOffice project.
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  *
   8  * This file incorporates work covered by the following license notice:
   9  *
  10  *   Licensed to the Apache Software Foundation (ASF) under one or more
  11  *   contributor license agreements. See the NOTICE file distributed
  12  *   with this work for additional information regarding copyright
  13  *   ownership. The ASF licenses this file to you under the Apache
  14  *   License, Version 2.0 (the "License"); you may not use this file
  15  *   except in compliance with the License. You may obtain a copy of
  16  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  17  */
  18
  19 import com.sun.star.accessibility.*;
  20 import tools.NameProvider;
  21
  22 /** This singleton class creates nodes for given accessible objects.
  23 */
  24 class NodeFactory
  25 {
  26     public synchronized static NodeFactory Instance ()
  27     {
  28         if (maInstance == null)
  29         {
  30             maInstance = new NodeFactory();
  31         }
  32         return maInstance;
  33     }
  34
  35     private NodeFactory ()
  36     {
  37     }
  38
  39
  40     /** add default handlers based on the supported interfaces */
  41     private void addDefaultHandlers (AccTreeNode aNode, XAccessibleContext xContext)
  42     {
  43         if (false)
  44         {
  45             // Slow but complete version: try each handler type separately.
  46             aNode.addHandler (maContextHandler.createHandler (xContext));
  47             aNode.addHandler (maTextHandler.createHandler (xContext));
  48             aNode.addHandler (maEditableTextHandler.createHandler (xContext));
  49             aNode.addHandler (maComponentHandler.createHandler (xContext));
  50             aNode.addHandler (maExtendedComponentHandler.createHandler (xContext));
  51             aNode.addHandler (maActionHandler.createHandler (xContext));
  52             aNode.addHandler (maImageHandler.createHandler (xContext));
  53             aNode.addHandler (maTableHandler.createHandler (xContext));
  54             aNode.addHandler (maCellHandler.createHandler (xContext));
  55             aNode.addHandler (maHypertextHandler.createHandler (xContext));
  56             aNode.addHandler (maHyperlinkHandler.createHandler (xContext));
  57             aNode.addHandler (maSelectionHandler.createHandler (xContext));
  58             aNode.addHandler (maRelationHandler.createHandler (xContext));
  59             aNode.addHandler (maUNOHandler.createHandler (xContext));
  60             aNode.addHandler (maTreeHandler.createHandler (xContext));
  61         }
  62         else
  63         {
  64             // Exploit dependencies between interfaces.
  65             NodeHandler aHandler;
  66             aNode.addHandler (maContextHandler.createHandler (xContext));
  67
  68             aHandler = maTextHandler.createHandler (xContext);
  69             if (aHandler != null)
  70             {
  71                 aNode.addHandler (aHandler);
  72                 aNode.addHandler (maEditableTextHandler.createHandler (xContext));
  73                 aNode.addHandler (maHypertextHandler.createHandler (xContext));
  74                 aNode.addHandler (maHyperlinkHandler.createHandler (xContext));
  75             }
  76             aHandler = maComponentHandler.createHandler (xContext);
  77             if (aHandler != null)
  78             {
  79                 aNode.addHandler (aHandler);
  80                 aNode.addHandler (maExtendedComponentHandler.createHandler (xContext));
  81             }
  82             aNode.addHandler (maActionHandler.createHandler (xContext));
  83             aNode.addHandler (maImageHandler.createHandler (xContext));
  84             aNode.addHandler (maTableHandler.createHandler (xContext));
  85             aNode.addHandler (maRelationHandler.createHandler (xContext));
  86             aNode.addHandler (maCellHandler.createHandler (xContext));
  87             aNode.addHandler (maSelectionHandler.createHandler (xContext));
  88             aNode.addHandler (maUNOHandler.createHandler (xContext));
  89             aNode.addHandler (maTreeHandler.createHandler (xContext));
  90         }
  91     }
  92
  93     /** create a node with the default handlers */
  94     public AccTreeNode createDefaultNode (XAccessible xAccessible, AccessibleTreeNode aParent)
  95     {
  96         // default: aObject + aDisplay
  97         String sDisplay;
  98
  99         // if we are accessible, we use the context + name instead
 100         XAccessibleContext xContext = null;
 101         if (xAccessible != null)
 102             xContext = xAccessible.getAccessibleContext();
 103         if (xContext != null)
 104         {
 105             sDisplay = xContext.getAccessibleName();
 106             if (sDisplay.length()==0)
 107             {
 108                 sDisplay = "<no name> Role: "
 109                     + NameProvider.getRoleName (
 110                         xContext.getAccessibleRole());
 111             }
 112         }
 113         else
 114             sDisplay = "not accessible";
 115
 116
 117         // create node, and add default handlers
 118         AccTreeNode aNode = new AccTreeNode (xContext, sDisplay, aParent);
 119         addDefaultHandlers (aNode, xContext);
 120
 121         return aNode;
 122     }
 123
 124     private static NodeFactory maInstance = null;
 125
 126     // default handlers
 127     private final NodeHandler maContextHandler = new AccessibleContextHandler();
 128     private final NodeHandler maTextHandler = new AccessibleTextHandler();
 129     private final NodeHandler maEditableTextHandler = new AccessibleEditableTextHandler();
 130     private final NodeHandler maComponentHandler = new AccessibleComponentHandler();
 131     private final NodeHandler maExtendedComponentHandler = new AccessibleExtendedComponentHandler();
 132     private final NodeHandler maActionHandler = new AccessibleActionHandler();
 133     private final NodeHandler maImageHandler = new AccessibleImageHandler();
 134     private final NodeHandler maTableHandler = new AccessibleTableHandler();
 135     private final NodeHandler maCellHandler = new AccessibleCellHandler();
 136     private final NodeHandler maHypertextHandler = new AccessibleHypertextHandler();
 137     private final NodeHandler maHyperlinkHandler = new AccessibleHyperlinkHandler();
 138     private final NodeHandler maSelectionHandler = new AccessibleSelectionHandler();
 139     private final NodeHandler maRelationHandler = new AccessibleRelationHandler();
 140     private final NodeHandler maTreeHandler = new AccessibleTreeHandler();
 141     private final NodeHandler maUNOHandler = new AccessibleUNOHandler();
 142 }