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Diffstat (limited to 'accessibility/workben/org/openoffice/accessibility/awb/tree/DynamicAccessibilityNode.java')
-rw-r--r-- | accessibility/workben/org/openoffice/accessibility/awb/tree/DynamicAccessibilityNode.java | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/accessibility/workben/org/openoffice/accessibility/awb/tree/DynamicAccessibilityNode.java b/accessibility/workben/org/openoffice/accessibility/awb/tree/DynamicAccessibilityNode.java new file mode 100644 index 000000000000..ff6f5ddd45ea --- /dev/null +++ b/accessibility/workben/org/openoffice/accessibility/awb/tree/DynamicAccessibilityNode.java @@ -0,0 +1,126 @@ +/************************************************************************* + * + * $RCSfile: DynamicAccessibilityNode.java,v $ + * + * $Revision: 1.1 $ + * + * last change: $Author: obr $ $Date: 2003/09/19 09:21:40 $ + * + * The Contents of this file are made available subject to the terms of + * either of the following licenses + * + * - GNU Lesser General Public License Version 2.1 + * - Sun Industry Standards Source License Version 1.1 + * + * Sun Microsystems Inc., October, 2000 + * + * GNU Lesser General Public License Version 2.1 + * ============================================= + * Copyright 2000 by Sun Microsystems, Inc. + * 901 San Antonio Road, Palo Alto, CA 94303, USA + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software Foundation. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * + * Sun Industry Standards Source License Version 1.1 + * ================================================= + * The contents of this file are subject to the Sun Industry Standards + * Source License Version 1.1 (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.openoffice.org/license.html. + * + * Software provided under this License is provided on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, + * WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS, + * MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING. + * See the License for the specific provisions governing your rights and + * obligations concerning the Software. + * + * The Initial Developer of the Original Code is: Sun Microsystems, Inc. + * + * Copyright: 2000 by Sun Microsystems, Inc. + * + * All Rights Reserved. + * + * Contributor(s): _______________________________________ + * + * + ************************************************************************/ + +package org.openoffice.accessibility.awb.tree; + +import com.sun.star.uno.UnoRuntime; +import com.sun.star.accessibility.XAccessible; +import com.sun.star.accessibility.XAccessibleContext; + +/* + * This class is dynamic in the way that it does not contain any children + * until the node is going to be expanded. It also releases all children + * as soon as the node is collapsed again. + */ +class DynamicAccessibilityNode extends AccessibilityNode { + + public DynamicAccessibilityNode(AccessibilityModel treeModel) { + super(treeModel); + } + + // Populates the child list. Called by AccessibilityMode.treeWillExpand(). + protected void populate() { + try { + XAccessibleContext xAC = getAccessibleContext(); + if (xAC != null) { + int n = xAC.getAccessibleChildCount(); + for (int i=0; i<n; i++) { + XAccessible xAccessible = xAC.getAccessibleChild(i); + AccessibilityNode node = treeModel.findNode(xAccessible); + if (node == null) { + node = treeModel.createNode(xAccessible); + } + if (node != null) { + // NOTE: do not send any tree notifications here ! + add(node); + } + } + } + } catch (com.sun.star.lang.IndexOutOfBoundsException e) { + // This should never happen since we previously checked the child + // count. + // FIXME: error message + } catch (com.sun.star.uno.RuntimeException e) { + // FIXME: error message + } + } + + // Clears the child list. Called by AccessibilityModel.treeCollapsed(). + protected void clear() { + removeAllChildren(); + } + + /* This is called whenever the node is painted, no matter if collapsed + * or expanded. Making this a "life" value seems to be appropriate. + */ + public boolean isLeaf() { + try { + XAccessibleContext xAC = getAccessibleContext(); + if (xAC != null) { + return xAC.getAccessibleChildCount() == 0; + } + return true; + } catch (com.sun.star.uno.RuntimeException e) { + return true; + } + } + +} |