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21 
22 import com.sun.star.uno.UnoRuntime;
23 import com.sun.star.accessibility.XAccessible;
24 import com.sun.star.accessibility.XAccessibleContext;
25 import com.sun.star.accessibility.AccessibleRelation;
26 import com.sun.star.accessibility.XAccessibleRelationSet;
27 import com.sun.star.accessibility.AccessibleRelationType;
28 import com.sun.star.lang.XServiceInfo;
29 import com.sun.star.lang.XTypeProvider;
30 import com.sun.star.uno.Type;
31 
32 
33 /** This handler displays lower level UNO information.  These are the
34     supported services, interfaces, and the implementation name.
35 */
36 class AccessibleUNOHandler
37     extends NodeHandler
38 {
createHandler(XAccessibleContext xContext)39     public NodeHandler createHandler (XAccessibleContext xContext)
40     {
41         if (xContext == null)
42             return null;
43         else
44             return new AccessibleUNOHandler (xContext);
45     }
46 
AccessibleUNOHandler()47     public AccessibleUNOHandler()
48     {
49     }
50 
AccessibleUNOHandler(XAccessibleContext xContext)51     public AccessibleUNOHandler (XAccessibleContext xContext)
52     {
53         maChildList.setSize (3);
54     }
55 
GetServiceInfo(AccessibleTreeNode aNode)56     private XServiceInfo GetServiceInfo (AccessibleTreeNode aNode)
57     {
58         XServiceInfo xServiceInfo = null;
59         if (aNode instanceof AccTreeNode)
60             xServiceInfo = (XServiceInfo)UnoRuntime.queryInterface(
61                 XServiceInfo.class, ((AccTreeNode)aNode).getContext());
62         return xServiceInfo;
63     }
GetTypeProvider(AccessibleTreeNode aNode)64     private XTypeProvider GetTypeProvider (AccessibleTreeNode aNode)
65     {
66         XTypeProvider xTypeProvider = null;
67         if (aNode instanceof AccTreeNode)
68             xTypeProvider = (XTypeProvider)UnoRuntime.queryInterface(
69                 XTypeProvider.class, ((AccTreeNode)aNode).getContext());
70         return xTypeProvider;
71     }
72 
createChild(AccessibleTreeNode aParent, int nIndex)73     public AccessibleTreeNode createChild (AccessibleTreeNode aParent,
74                                            int nIndex)
75     {
76         AccessibleTreeNode aChild = null;
77         XServiceInfo xServiceInfo;
78         switch (nIndex)
79         {
80             case 0 : // Implemenation name.
81                 xServiceInfo = GetServiceInfo (aParent);
82                 aChild = new StringNode ("Implementation name: " +
83                     (xServiceInfo!=null ? xServiceInfo.getImplementationName()
84                         : "<XServiceInfo not supported>"),
85                     aParent);
86                 break;
87             case 1 :
88                 xServiceInfo = GetServiceInfo (aParent);
89                 if (xServiceInfo == null)
90                     aChild = new StringNode (
91                         "Supported services: <XServiceInfo not supported>",
92                         aParent);
93                 else
94                     aChild = CreateServiceTree (aParent, xServiceInfo);
95                 break;
96             case 2 :
97                 XTypeProvider xTypeProvider = GetTypeProvider (aParent);
98                 if (xTypeProvider == null)
99                     aChild = new StringNode (
100                         "Supported interfaces: <XTypeProvider not supported>",
101                         aParent);
102                 else
103                     aChild = CreateInterfaceTree (aParent, xTypeProvider);
104                 break;
105         }
106 
107         return aChild;
108     }
109 
110 
CreateServiceTree(AccessibleTreeNode aParent, XServiceInfo xServiceInfo)111     private AccessibleTreeNode CreateServiceTree (AccessibleTreeNode aParent,
112         XServiceInfo xServiceInfo)
113     {
114         String[] aServiceNames = xServiceInfo.getSupportedServiceNames();
115         VectorNode aNode = new VectorNode ("Supported Services", aParent);
116 
117         int nCount = aServiceNames.length;
118         for (int i=0; i<nCount; i++)
119             aNode.addChild (new StringNode (aServiceNames[i], aParent));
120 
121         return aNode;
122     }
123 
CreateInterfaceTree(AccessibleTreeNode aParent, XTypeProvider xTypeProvider)124     private AccessibleTreeNode CreateInterfaceTree (AccessibleTreeNode aParent,
125         XTypeProvider xTypeProvider)
126     {
127         Type[] aTypes = xTypeProvider.getTypes();
128         VectorNode aNode = new VectorNode ("Supported Interfaces", aParent);
129 
130         int nCount = aTypes.length;
131         for (int i=0; i<nCount; i++)
132             aNode.addChild (new StringNode (aTypes[i].getTypeName(), aParent));
133 
134         return aNode;
135     }
136 }
137