// 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 ui::AXTreeUpdate& initial_tree, BrowserAccessibilityDelegate* delegate, BrowserAccessibilityFactory* factory) { return new BrowserAccessibilityManagerMac( NULL, initial_tree, delegate, factory); } BrowserAccessibilityManagerMac::BrowserAccessibilityManagerMac( NSView* parent_view, const ui::AXTreeUpdate& initial_tree, BrowserAccessibilityDelegate* delegate, BrowserAccessibilityFactory* factory) : BrowserAccessibilityManager(initial_tree, delegate, factory), parent_view_(parent_view) { } // static ui::AXTreeUpdate BrowserAccessibilityManagerMac::GetEmptyDocument() { ui::AXNodeData empty_document; empty_document.id = 0; empty_document.role = ui::AX_ROLE_ROOT_WEB_AREA; empty_document.state = 1 << ui::AX_STATE_READ_ONLY; ui::AXTreeUpdate update; update.nodes.push_back(empty_document); return update; } void BrowserAccessibilityManagerMac::NotifyAccessibilityEvent( ui::AXEvent event_type, BrowserAccessibility* node) { if (!node->IsNative()) return; // Refer to AXObjectCache.mm (webkit). NSString* event_id = @""; switch (event_type) { case ui::AX_EVENT_ACTIVEDESCENDANTCHANGED: if (node->GetRole() == ui::AX_ROLE_TREE) event_id = NSAccessibilitySelectedRowsChangedNotification; else event_id = NSAccessibilityFocusedUIElementChangedNotification; break; case ui::AX_EVENT_ALERT: // Not used on Mac. return; case ui::AX_EVENT_BLUR: // A no-op on Mac. return; case ui::AX_EVENT_CHECKED_STATE_CHANGED: // Not used on Mac. return; case ui::AX_EVENT_CHILDREN_CHANGED: // TODO(dtseng): no clear equivalent on Mac. return; case ui::AX_EVENT_FOCUS: event_id = NSAccessibilityFocusedUIElementChangedNotification; break; case ui::AX_EVENT_LAYOUT_COMPLETE: event_id = @"AXLayoutComplete"; break; case ui::AX_EVENT_LIVE_REGION_CHANGED: event_id = @"AXLiveRegionChanged"; break; case ui::AX_EVENT_LOAD_COMPLETE: event_id = @"AXLoadComplete"; break; case ui::AX_EVENT_MENU_LIST_VALUE_CHANGED: // Not used on Mac. return; case ui::AX_EVENT_SHOW: // Not used on Mac. return; case ui::AX_EVENT_HIDE: // Not used on Mac. return; case ui::AX_EVENT_ROW_COUNT_CHANGED: event_id = NSAccessibilityRowCountChangedNotification; break; case ui::AX_EVENT_ROW_COLLAPSED: event_id = @"AXRowCollapsed"; break; case ui::AX_EVENT_ROW_EXPANDED: event_id = @"AXRowExpanded"; break; case ui::AX_EVENT_SCROLLED_TO_ANCHOR: // Not used on Mac. return; case ui::AX_EVENT_SELECTED_CHILDREN_CHANGED: event_id = NSAccessibilitySelectedChildrenChangedNotification; break; case ui::AX_EVENT_SELECTED_TEXT_CHANGED: event_id = NSAccessibilitySelectedTextChangedNotification; break; case ui::AX_EVENT_TEXT_INSERTED: // Not used on Mac. return; case ui::AX_EVENT_TEXT_REMOVED: // Not used on Mac. return; case ui::AX_EVENT_VALUE_CHANGED: event_id = NSAccessibilityValueChangedNotification; break; case ui::AX_EVENT_ARIA_ATTRIBUTE_CHANGED: // Not used on Mac. return; case ui::AX_EVENT_AUTOCORRECTION_OCCURED: // Not used on Mac. return; case ui::AX_EVENT_INVALID_STATUS_CHANGED: // Not used on Mac. return; case ui::AX_EVENT_LOCATION_CHANGED: // Not used on Mac. return; case ui::AX_EVENT_MENU_LIST_ITEM_SELECTED: // Not used on Mac. return; case ui::AX_EVENT_TEXT_CHANGED: // 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