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import com.sun.star.accessibility.*;
import java.util.Vector;
import tools.NameProvider;
/** This singleton class creates nodes for given accessible objects.
*/
class NodeFactory
{
public synchronized static NodeFactory Instance ()
{
if (maInstance == null)
{
maInstance = new NodeFactory();
}
return maInstance;
}
private NodeFactory ()
{
mbVerbose = false;
maContextHandler = new AccessibleContextHandler();
maTextHandler = new AccessibleTextHandler();
maEditableTextHandler = new AccessibleEditableTextHandler();
maComponentHandler = new AccessibleComponentHandler();
maExtendedComponentHandler = new AccessibleExtendedComponentHandler();
maActionHandler = new AccessibleActionHandler();
maImageHandler = new AccessibleImageHandler();
maTableHandler = new AccessibleTableHandler();
maCellHandler = new AccessibleCellHandler();
maHypertextHandler = new AccessibleHypertextHandler();
maHyperlinkHandler = new AccessibleHyperlinkHandler();
maSelectionHandler = new AccessibleSelectionHandler();
maRelationHandler = new AccessibleRelationHandler();
maTreeHandler = new AccessibleTreeHandler();
maUNOHandler = new AccessibleUNOHandler();
}
/** add default handlers based on the supported interfaces */
private void addDefaultHandlers (AccTreeNode aNode, XAccessibleContext xContext)
{
if (false)
{
// Slow but complete version: try each handler type separately.
aNode.addHandler (maContextHandler.createHandler (xContext));
aNode.addHandler (maTextHandler.createHandler (xContext));
aNode.addHandler (maEditableTextHandler.createHandler (xContext));
aNode.addHandler (maComponentHandler.createHandler (xContext));
aNode.addHandler (maExtendedComponentHandler.createHandler (xContext));
aNode.addHandler (maActionHandler.createHandler (xContext));
aNode.addHandler (maImageHandler.createHandler (xContext));
aNode.addHandler (maTableHandler.createHandler (xContext));
aNode.addHandler (maCellHandler.createHandler (xContext));
aNode.addHandler (maHypertextHandler.createHandler (xContext));
aNode.addHandler (maHyperlinkHandler.createHandler (xContext));
aNode.addHandler (maSelectionHandler.createHandler (xContext));
aNode.addHandler (maRelationHandler.createHandler (xContext));
aNode.addHandler (maUNOHandler.createHandler (xContext));
aNode.addHandler (maTreeHandler.createHandler (xContext));
}
else
{
// Exploit dependencies between interfaces.
NodeHandler aHandler;
aNode.addHandler (maContextHandler.createHandler (xContext));
aHandler = maTextHandler.createHandler (xContext);
if (aHandler != null)
{
aNode.addHandler (aHandler);
aNode.addHandler (maEditableTextHandler.createHandler (xContext));
aNode.addHandler (maHypertextHandler.createHandler (xContext));
aNode.addHandler (maHyperlinkHandler.createHandler (xContext));
}
aHandler = maComponentHandler.createHandler (xContext);
if (aHandler != null)
{
aNode.addHandler (aHandler);
aNode.addHandler (maExtendedComponentHandler.createHandler (xContext));
}
aNode.addHandler (maActionHandler.createHandler (xContext));
aNode.addHandler (maImageHandler.createHandler (xContext));
aNode.addHandler (maTableHandler.createHandler (xContext));
aNode.addHandler (maRelationHandler.createHandler (xContext));
aNode.addHandler (maCellHandler.createHandler (xContext));
aNode.addHandler (maSelectionHandler.createHandler (xContext));
aNode.addHandler (maUNOHandler.createHandler (xContext));
aNode.addHandler (maTreeHandler.createHandler (xContext));
}
}
/** create a node with the default handlers */
public AccTreeNode createDefaultNode (XAccessible xAccessible, AccessibleTreeNode aParent)
{
// default: aObject + aDisplay
String sDisplay;
// if we are accessible, we use the context + name instead
XAccessibleContext xContext = null;
if (xAccessible != null)
xContext = xAccessible.getAccessibleContext();
if (xContext != null)
{
sDisplay = xContext.getAccessibleName();
if (sDisplay.length()==0)
{
sDisplay = "<no name> Role: "
+ NameProvider.getRoleName (
xContext.getAccessibleRole());
}
}
else
sDisplay = new String ("not accessible");
// create node, and add default handlers
AccTreeNode aNode = new AccTreeNode (xAccessible, xContext, sDisplay, aParent);
addDefaultHandlers (aNode, xContext);
if (aNode == null)
System.out.println ("createDefaultNode == null");
return aNode;
}
private static NodeFactory maInstance = null;
private boolean mbVerbose;
// default handlers
private NodeHandler maContextHandler = new AccessibleContextHandler();
private NodeHandler maTextHandler = new AccessibleTextHandler();
private NodeHandler maEditableTextHandler = new AccessibleEditableTextHandler();
private NodeHandler maComponentHandler = new AccessibleComponentHandler();
private NodeHandler maExtendedComponentHandler = new AccessibleExtendedComponentHandler();
private NodeHandler maActionHandler = new AccessibleActionHandler();
private NodeHandler maImageHandler = new AccessibleImageHandler();
private NodeHandler maTableHandler = new AccessibleTableHandler();
private NodeHandler maCellHandler = new AccessibleCellHandler();
private NodeHandler maHypertextHandler = new AccessibleHypertextHandler();
private NodeHandler maHyperlinkHandler = new AccessibleHyperlinkHandler();
private NodeHandler maSelectionHandler = new AccessibleSelectionHandler();
private NodeHandler maRelationHandler = new AccessibleRelationHandler();
private NodeHandler maTreeHandler = new AccessibleTreeHandler();
private NodeHandler maUNOHandler = new AccessibleUNOHandler();
}
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