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.uno.UnoRuntime;
20 import com.sun.star.accessibility.XAccessibleContext;
21 import com.sun.star.lang.XServiceInfo;
22 import com.sun.star.lang.XTypeProvider;
23 import com.sun.star.uno.Type;
24 
25 
26 /** This handler displays lower level UNO information.  These are the
27     supported services, interfaces, and the implementation name.
28 */
29 class AccessibleUNOHandler
30     extends NodeHandler
31 {
32     @Override
createHandler(XAccessibleContext xContext)33     public NodeHandler createHandler (XAccessibleContext xContext)
34     {
35         if (xContext == null)
36             return null;
37         else
38         {
39             AccessibleUNOHandler h = new AccessibleUNOHandler();
40             h.maChildList.setSize (3);
41             return h;
42         }
43     }
44 
GetServiceInfo(AccessibleTreeNode aNode)45     private XServiceInfo GetServiceInfo (AccessibleTreeNode aNode)
46     {
47         XServiceInfo xServiceInfo = null;
48         if (aNode instanceof AccTreeNode)
49             xServiceInfo = UnoRuntime.queryInterface(
50                 XServiceInfo.class, ((AccTreeNode)aNode).getContext());
51         return xServiceInfo;
52     }
GetTypeProvider(AccessibleTreeNode aNode)53     private XTypeProvider GetTypeProvider (AccessibleTreeNode aNode)
54     {
55         XTypeProvider xTypeProvider = null;
56         if (aNode instanceof AccTreeNode)
57             xTypeProvider = UnoRuntime.queryInterface(
58                 XTypeProvider.class, ((AccTreeNode)aNode).getContext());
59         return xTypeProvider;
60     }
61 
62     @Override
createChild(AccessibleTreeNode aParent, int nIndex)63     public AccessibleTreeNode createChild (AccessibleTreeNode aParent,
64                                            int nIndex)
65     {
66         AccessibleTreeNode aChild = null;
67         XServiceInfo xServiceInfo;
68         switch (nIndex)
69         {
70             case 0 : // Implementation name.
71                 xServiceInfo = GetServiceInfo (aParent);
72                 aChild = new StringNode ("Implementation name: " +
73                     (xServiceInfo!=null ? xServiceInfo.getImplementationName()
74                         : "<XServiceInfo not supported>"),
75                     aParent);
76                 break;
77             case 1 :
78                 xServiceInfo = GetServiceInfo (aParent);
79                 if (xServiceInfo == null)
80                     aChild = new StringNode (
81                         "Supported services: <XServiceInfo not supported>",
82                         aParent);
83                 else
84                     aChild = CreateServiceTree (aParent, xServiceInfo);
85                 break;
86             case 2 :
87                 XTypeProvider xTypeProvider = GetTypeProvider (aParent);
88                 if (xTypeProvider == null)
89                     aChild = new StringNode (
90                         "Supported interfaces: <XTypeProvider not supported>",
91                         aParent);
92                 else
93                     aChild = CreateInterfaceTree (aParent, xTypeProvider);
94                 break;
95         }
96 
97         return aChild;
98     }
99 
100 
CreateServiceTree(AccessibleTreeNode aParent, XServiceInfo xServiceInfo)101     private AccessibleTreeNode CreateServiceTree (AccessibleTreeNode aParent,
102         XServiceInfo xServiceInfo)
103     {
104         String[] aServiceNames = xServiceInfo.getSupportedServiceNames();
105         VectorNode aNode = new VectorNode ("Supported Services", aParent);
106 
107         int nCount = aServiceNames.length;
108         for (int i=0; i<nCount; i++)
109             aNode.addChild (new StringNode (aServiceNames[i], aParent));
110 
111         return aNode;
112     }
113 
CreateInterfaceTree(AccessibleTreeNode aParent, XTypeProvider xTypeProvider)114     private AccessibleTreeNode CreateInterfaceTree (AccessibleTreeNode aParent,
115         XTypeProvider xTypeProvider)
116     {
117         Type[] aTypes = xTypeProvider.getTypes();
118         VectorNode aNode = new VectorNode ("Supported Interfaces", aParent);
119 
120         int nCount = aTypes.length;
121         for (int i=0; i<nCount; i++)
122             aNode.addChild (new StringNode (aTypes[i].getTypeName(), aParent));
123 
124         return aNode;
125     }
126 }
127