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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 = blink::WebAXRoleRootWebArea;
empty_document.state =
1 << blink::WebAXStateReadonly;
return empty_document;
}
void BrowserAccessibilityManagerMac::NotifyAccessibilityEvent(
blink::WebAXEvent event_type,
BrowserAccessibility* node) {
if (!node->IsNative())
return;
// Refer to AXObjectCache.mm (webkit).
NSString* event_id = @"";
switch (event_type) {
case blink::WebAXEventActiveDescendantChanged:
if (node->role() == blink::WebAXRoleTree)
event_id = NSAccessibilitySelectedRowsChangedNotification;
else
event_id = NSAccessibilityFocusedUIElementChangedNotification;
break;
case blink::WebAXEventAlert:
// Not used on Mac.
return;
case blink::WebAXEventBlur:
// A no-op on Mac.
return;
case blink::WebAXEventCheckedStateChanged:
// Not used on Mac.
return;
case blink::WebAXEventChildrenChanged:
// TODO(dtseng): no clear equivalent on Mac.
return;
case blink::WebAXEventFocus:
event_id = NSAccessibilityFocusedUIElementChangedNotification;
break;
case blink::WebAXEventLayoutComplete:
event_id = @"AXLayoutComplete";
break;
case blink::WebAXEventLiveRegionChanged:
event_id = @"AXLiveRegionChanged";
break;
case blink::WebAXEventLoadComplete:
event_id = @"AXLoadComplete";
break;
case blink::WebAXEventMenuListValueChanged:
// Not used on Mac.
return;
case blink::WebAXEventShow:
// Not used on Mac.
return;
case blink::WebAXEventHide:
// Not used on Mac.
return;
case blink::WebAXEventRowCountChanged:
event_id = NSAccessibilityRowCountChangedNotification;
break;
case blink::WebAXEventRowCollapsed:
event_id = @"AXRowCollapsed";
break;
case blink::WebAXEventRowExpanded:
event_id = @"AXRowExpanded";
break;
case blink::WebAXEventScrolledToAnchor:
// Not used on Mac.
return;
case blink::WebAXEventSelectedChildrenChanged:
event_id = NSAccessibilitySelectedChildrenChangedNotification;
break;
case blink::WebAXEventSelectedTextChanged:
event_id = NSAccessibilitySelectedTextChangedNotification;
break;
case blink::WebAXEventTextInserted:
// Not used on Mac.
return;
case blink::WebAXEventTextRemoved:
// Not used on Mac.
return;
case blink::WebAXEventValueChanged:
event_id = NSAccessibilityValueChangedNotification;
break;
case blink::WebAXEventAriaAttributeChanged:
// Not used on Mac.
return;
case blink::WebAXEventAutocorrectionOccured:
// Not used on Mac.
return;
case blink::WebAXEventInvalidStatusChanged:
// Not used on Mac.
return;
case blink::WebAXEventLocationChanged:
// Not used on Mac.
return;
case blink::WebAXEventMenuListItemSelected:
// Not used on Mac.
return;
case blink::WebAXEventTextChanged:
// Not used on Mac.
return;
default:
LOG(WARNING) << "Unknown accessibility event: " << event_type;
return;
}
BrowserAccessibilityCocoa* native_node = node->ToBrowserAccessibilityCocoa();
DCHECK(native_node);
NSAccessibilityPostNotification(native_node, event_id);
}
} // namespace content
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