1 files changed, 92 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
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index 000000000000..a982ad71c4d5
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+++ b/accessibility/workben/org/openoffice/accessibility/awb/tree/DynamicAccessibilityNode.java
@@ -0,0 +1,92 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+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;
+        }
+    }
+
+}