| /************************************************************** |
| * |
| * 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 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * |
| *************************************************************/ |
| |
| import com.sun.star.accessibility.XAccessible; |
| import com.sun.star.accessibility.XAccessibleContext; |
| import com.sun.star.uno.UnoRuntime; |
| import com.sun.star.lang.IndexOutOfBoundsException; |
| |
| |
| /** |
| * Map the tree of accessibility objects into their |
| * AccessibilityTreeModel counterparts. |
| */ |
| class AccessibleTreeHandler |
| extends NodeHandler |
| { |
| protected XAccessibleContext mxContext; |
| |
| public NodeHandler createHandler (XAccessibleContext xContext) |
| { |
| if (xContext != null) |
| return new AccessibleTreeHandler (xContext); |
| else |
| return null; |
| } |
| |
| public AccessibleTreeHandler () |
| { |
| super(); |
| mxContext = null; |
| } |
| |
| public AccessibleTreeHandler (XAccessibleContext xContext) |
| { |
| super(); |
| mxContext = xContext; |
| if (mxContext != null) |
| // Add one to the number of children to include the string node |
| // that tells you how many children there are. |
| synchronized (maChildList) |
| { |
| maChildList.setSize (1 + mxContext.getAccessibleChildCount()); |
| } |
| } |
| |
| public AccessibleTreeNode createChild (AccessibleTreeNode aParent, int nIndex) |
| { |
| AccessibleTreeNode aChild = null; |
| if (mxContext != null) |
| { |
| if (nIndex == 0) |
| aChild = new StringNode ("Child count: " + mxContext.getAccessibleChildCount(), |
| aParent); |
| else |
| { |
| // Lower index to skip the string node. |
| nIndex -= 1; |
| try |
| { |
| XAccessible xChild = mxContext.getAccessibleChild (nIndex); |
| aChild = NodeFactory.Instance().createDefaultNode ( |
| xChild, aParent); |
| } |
| catch( IndexOutOfBoundsException e ) |
| { |
| aChild = new StringNode ("ERROR: no child with index " + nIndex, aParent); |
| } |
| } |
| } |
| else |
| aChild = new StringNode ("XAccessibleContext interface not supported", aParent); |
| return aChild; |
| } |
| |
| /** Try to add the specified accessible child into the lists of |
| children. The insertion position is determined from the |
| getIndexInParent method of the child. |
| */ |
| public AccessibleTreeNode addAccessibleChild (AccessibleTreeNode aParent, XAccessible xChild) |
| { |
| AccessibleTreeNode aChild = null; |
| |
| if (xChild != null) |
| { |
| XAccessibleContext xContext = xChild.getAccessibleContext(); |
| if (xContext != null) |
| { |
| int nIndex = xContext.getAccessibleIndexInParent() + 1; |
| synchronized (maChildList) |
| { |
| if ((nIndex >= 0) || (nIndex <= maChildList.size())) |
| { |
| aChild = NodeFactory.Instance().createDefaultNode (xChild, aParent); |
| maChildList.insertElementAt (aChild, nIndex); |
| } |
| } |
| } |
| } |
| return aChild; |
| } |
| |
| |
| /** Update only the child count node. Trust on other ways to update the |
| accessible children. |
| */ |
| public void update (AccessibleTreeNode aNode) |
| { |
| synchronized (maChildList) |
| { |
| maChildList.setElementAt (null, 0); |
| } |
| } |
| } |