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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/accessibility/browser_accessibility_manager_mac.h"
#import "base/logging.h"
#import "content/browser/accessibility/browser_accessibility_cocoa.h"
#include "content/common/accessibility_messages.h"
namespace content {
// static
BrowserAccessibilityManager* BrowserAccessibilityManager::Create(
const AccessibilityNodeData& src,
BrowserAccessibilityDelegate* delegate,
BrowserAccessibilityFactory* factory) {
return new BrowserAccessibilityManagerMac(NULL, src, delegate, factory);
}
BrowserAccessibilityManagerMac::BrowserAccessibilityManagerMac(
NSView* parent_view,
const AccessibilityNodeData& src,
BrowserAccessibilityDelegate* delegate,
BrowserAccessibilityFactory* factory)
: BrowserAccessibilityManager(src, delegate, factory),
parent_view_(parent_view) {
}
// static
AccessibilityNodeData BrowserAccessibilityManagerMac::GetEmptyDocument() {
AccessibilityNodeData empty_document;
empty_document.id = 0;
empty_document.role = AccessibilityNodeData::ROLE_ROOT_WEB_AREA;
empty_document.state =
1 << AccessibilityNodeData::STATE_READONLY;
return empty_document;
}
void BrowserAccessibilityManagerMac::NotifyAccessibilityEvent(
int type,
BrowserAccessibility* node) {
if (!node->IsNative())
return;
// Refer to AXObjectCache.mm (webkit).
NSString* event_id = @"";
switch (type) {
case AccessibilityNotificationActiveDescendantChanged:
if (node->role() == AccessibilityNodeData::ROLE_TREE)
event_id = NSAccessibilitySelectedRowsChangedNotification;
else
event_id = NSAccessibilityFocusedUIElementChangedNotification;
break;
case AccessibilityNotificationAlert:
// Not used on Mac.
return;
case AccessibilityNotificationBlur:
// A no-op on Mac.
return;
case AccessibilityNotificationCheckStateChanged:
// Not used on Mac.
return;
case AccessibilityNotificationChildrenChanged:
// TODO(dtseng): no clear equivalent on Mac.
return;
case AccessibilityNotificationFocusChanged:
event_id = NSAccessibilityFocusedUIElementChangedNotification;
break;
case AccessibilityNotificationLayoutComplete:
event_id = @"AXLayoutComplete";
break;
case AccessibilityNotificationLiveRegionChanged:
event_id = @"AXLiveRegionChanged";
break;
case AccessibilityNotificationLoadComplete:
event_id = @"AXLoadComplete";
break;
case AccessibilityNotificationMenuListValueChanged:
// Not used on Mac.
return;
case AccessibilityNotificationObjectShow:
// Not used on Mac.
return;
case AccessibilityNotificationObjectHide:
// Not used on Mac.
return;
case AccessibilityNotificationRowCountChanged:
event_id = NSAccessibilityRowCountChangedNotification;
break;
case AccessibilityNotificationRowCollapsed:
event_id = @"AXRowCollapsed";
break;
case AccessibilityNotificationRowExpanded:
event_id = @"AXRowExpanded";
break;
case AccessibilityNotificationScrolledToAnchor:
// Not used on Mac.
return;
case AccessibilityNotificationSelectedChildrenChanged:
event_id = NSAccessibilitySelectedChildrenChangedNotification;
break;
case AccessibilityNotificationSelectedTextChanged:
event_id = NSAccessibilitySelectedTextChangedNotification;
break;
case AccessibilityNotificationTextInserted:
// Not used on Mac.
return;
case AccessibilityNotificationTextRemoved:
// Not used on Mac.
return;
case AccessibilityNotificationValueChanged:
event_id = NSAccessibilityValueChangedNotification;
break;
}
BrowserAccessibilityCocoa* native_node = node->ToBrowserAccessibilityCocoa();
DCHECK(native_node);
NSAccessibilityPostNotification(native_node, event_id);
}
} // namespace content
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