WebCore/accessibility/mac/AXObjectCacheMac.mm
changeset 0 4f2f89ce4247
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/accessibility/mac/AXObjectCacheMac.mm	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2003, 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#import "config.h"
+#import "AXObjectCache.h"
+
+#if HAVE(ACCESSIBILITY)
+
+#import "AccessibilityObject.h"
+#import "AccessibilityObjectWrapper.h"
+#import "RenderObject.h"
+#import "WebCoreViewFactory.h"
+
+#import <wtf/PassRefPtr.h>
+
+#ifndef NSAccessibilityLiveRegionChangedNotification
+#define NSAccessibilityLiveRegionChangedNotification @"AXLiveRegionChanged"
+#endif
+
+// The simple Cocoa calls in this file don't throw exceptions.
+
+namespace WebCore {
+
+void AXObjectCache::detachWrapper(AccessibilityObject* obj)
+{
+    [obj->wrapper() detach];
+    [obj->wrapper() release];
+    obj->setWrapper(0);
+}
+
+void AXObjectCache::attachWrapper(AccessibilityObject* obj)
+{
+    obj->setWrapper([[AccessibilityObjectWrapper alloc] initWithAccessibilityObject:obj]);
+}
+
+void AXObjectCache::postPlatformNotification(AccessibilityObject* obj, AXNotification notification)
+{
+    if (!obj)
+        return;
+    
+    // Some notifications are unique to Safari and do not have NSAccessibility equivalents.
+    String macNotification;
+    switch (notification) {
+        case AXActiveDescendantChanged:
+            // An active descendant change for trees means a selected rows change.
+            if (obj->isTree())
+                macNotification = NSAccessibilitySelectedRowsChangedNotification;
+            else
+                macNotification = NSAccessibilityFocusedUIElementChangedNotification;                
+            break;
+        case AXFocusedUIElementChanged:
+            macNotification = NSAccessibilityFocusedUIElementChangedNotification;
+            break;
+        case AXLayoutComplete:
+            macNotification = "AXLayoutComplete";
+            break;
+        case AXLoadComplete:
+            macNotification = "AXLoadComplete";
+            break;
+        case AXSelectedChildrenChanged:
+            macNotification = NSAccessibilitySelectedChildrenChangedNotification;
+            break;
+        case AXSelectedTextChanged:
+            macNotification = NSAccessibilitySelectedTextChangedNotification;
+            break;
+        case AXValueChanged:
+            macNotification = NSAccessibilityValueChangedNotification;
+            break;
+        case AXLiveRegionChanged:
+            macNotification = NSAccessibilityLiveRegionChangedNotification;
+            break;
+        case AXRowCountChanged:
+            macNotification = NSAccessibilityRowCountChangedNotification;
+            break;
+#if !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD)
+        case AXRowExpanded:
+            macNotification = NSAccessibilityRowExpandedNotification;
+            break;
+        case AXRowCollapsed:
+            macNotification = NSAccessibilityRowCollapsedNotification;
+            break;
+#endif
+            // Does not exist on Mac.
+        case AXCheckedStateChanged:
+        default:
+            return;
+    }
+    
+    NSAccessibilityPostNotification(obj->wrapper(), macNotification);
+    
+    // Used by DRT to know when notifications are posted.
+    [obj->wrapper() accessibilityPostedNotification:macNotification];
+}
+
+void AXObjectCache::handleFocusedUIElementChanged(RenderObject*, RenderObject*)
+{
+    [[WebCoreViewFactory sharedFactory] accessibilityHandleFocusChanged];
+}
+
+void AXObjectCache::handleScrolledToAnchor(const Node*)
+{
+}
+
+}
+
+#endif // HAVE(ACCESSIBILITY)