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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
import com.sun.star.accessibility.*;
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 ()
{
}
/** 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 = "not accessible";
// create node, and add default handlers
AccTreeNode aNode = new AccTreeNode (xContext, sDisplay, aParent);
addDefaultHandlers (aNode, xContext);
return aNode;
}
private static NodeFactory maInstance = null;
// default handlers
private final NodeHandler maContextHandler = new AccessibleContextHandler();
private final NodeHandler maTextHandler = new AccessibleTextHandler();
private final NodeHandler maEditableTextHandler = new AccessibleEditableTextHandler();
private final NodeHandler maComponentHandler = new AccessibleComponentHandler();
private final NodeHandler maExtendedComponentHandler = new AccessibleExtendedComponentHandler();
private final NodeHandler maActionHandler = new AccessibleActionHandler();
private final NodeHandler maImageHandler = new AccessibleImageHandler();
private final NodeHandler maTableHandler = new AccessibleTableHandler();
private final NodeHandler maCellHandler = new AccessibleCellHandler();
private final NodeHandler maHypertextHandler = new AccessibleHypertextHandler();
private final NodeHandler maHyperlinkHandler = new AccessibleHyperlinkHandler();
private final NodeHandler maSelectionHandler = new AccessibleSelectionHandler();
private final NodeHandler maRelationHandler = new AccessibleRelationHandler();
private final NodeHandler maTreeHandler = new AccessibleTreeHandler();
private final NodeHandler maUNOHandler = new AccessibleUNOHandler();
}
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