/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #import <Cocoa/Cocoa.h> #include "Platform.h" #include "ProxyAccessible.h" #include "DocAccessibleParent.h" #include "mozTableAccessible.h" #include "nsAppShell.h" namespace mozilla { namespace a11y { // Mac a11y whitelisting static bool sA11yShouldBeEnabled = false; bool ShouldA11yBeEnabled() { EPlatformDisabledState disabledState = PlatformDisabledState(); return (disabledState == ePlatformIsForceEnabled) || ((disabledState == ePlatformIsEnabled) && sA11yShouldBeEnabled); } void PlatformInit() { } void PlatformShutdown() { } void ProxyCreated(ProxyAccessible* aProxy, uint32_t) { // Pass in dummy state for now as retrieving proxy state requires IPC. // Note that we can use ProxyAccessible::IsTable* functions here because they // do not use IPC calls but that might change after bug 1210477. Class type; if (aProxy->IsTable()) type = [mozTableAccessible class]; else if (aProxy->IsTableRow()) type = [mozTableRowAccessible class]; else if (aProxy->IsTableCell()) type = [mozTableCellAccessible class]; else type = GetTypeFromRole(aProxy->Role()); uintptr_t accWrap = reinterpret_cast<uintptr_t>(aProxy) | IS_PROXY; mozAccessible* mozWrapper = [[type alloc] initWithAccessible:accWrap]; aProxy->SetWrapper(reinterpret_cast<uintptr_t>(mozWrapper)); mozAccessible* nativeParent = nullptr; if (aProxy->IsDoc() && aProxy->AsDoc()->IsTopLevel()) { // If proxy is top level, the parent we need to invalidate the children of // will be a non-remote accessible. Accessible* outerDoc = aProxy->OuterDocOfRemoteBrowser(); if (outerDoc) { nativeParent = GetNativeFromGeckoAccessible(outerDoc); } } else { // Non-top level proxies need proxy parents' children invalidated. ProxyAccessible* parent = aProxy->Parent(); nativeParent = GetNativeFromProxy(parent); NS_ASSERTION(parent, "a non-top-level proxy is missing a parent?"); } if (nativeParent) { [nativeParent invalidateChildren]; } } void ProxyDestroyed(ProxyAccessible* aProxy) { mozAccessible* nativeParent = nil; if (aProxy->IsDoc() && aProxy->AsDoc()->IsTopLevel()) { // Invalidate native parent in parent process's children on proxy destruction Accessible* outerDoc = aProxy->OuterDocOfRemoteBrowser(); if (outerDoc) { nativeParent = GetNativeFromGeckoAccessible(outerDoc); } } else { if (!aProxy->Document()->IsShutdown()) { // Only do if the document has not been shut down, else parent will return // garbage since we don't shut down children from top down. ProxyAccessible* parent = aProxy->Parent(); // Invalidate proxy parent's children. if (parent) { nativeParent = GetNativeFromProxy(parent); } } } mozAccessible* wrapper = GetNativeFromProxy(aProxy); [wrapper expire]; [wrapper release]; aProxy->SetWrapper(0); if (nativeParent) { [nativeParent invalidateChildren]; } } void ProxyEvent(ProxyAccessible* aProxy, uint32_t aEventType) { // ignore everything but focus-changed, value-changed, caret and selection // events for now. if (aEventType != nsIAccessibleEvent::EVENT_FOCUS && aEventType != nsIAccessibleEvent::EVENT_VALUE_CHANGE && aEventType != nsIAccessibleEvent::EVENT_TEXT_VALUE_CHANGE && aEventType != nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED && aEventType != nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED) return; mozAccessible* wrapper = GetNativeFromProxy(aProxy); if (wrapper) FireNativeEvent(wrapper, aEventType); } void ProxyStateChangeEvent(ProxyAccessible* aProxy, uint64_t, bool) { // mac doesn't care about state change events } void ProxyCaretMoveEvent(ProxyAccessible* aTarget, int32_t aOffset) { mozAccessible* wrapper = GetNativeFromProxy(aTarget); if (wrapper) [wrapper selectedTextDidChange]; } void ProxyTextChangeEvent(ProxyAccessible*, const nsString&, int32_t, uint32_t, bool, bool) { } void ProxyShowHideEvent(ProxyAccessible*, ProxyAccessible*, bool, bool) { } void ProxySelectionEvent(ProxyAccessible*, ProxyAccessible*, uint32_t) { } } // namespace a11y } // namespace mozilla @interface GeckoNSApplication(a11y) -(void)accessibilitySetValue:(id)value forAttribute:(NSString*)attribute; @end @implementation GeckoNSApplication(a11y) -(void)accessibilitySetValue:(id)value forAttribute:(NSString*)attribute { if ([attribute isEqualToString:@"AXEnhancedUserInterface"]) mozilla::a11y::sA11yShouldBeEnabled = ([value intValue] == 1); return [super accessibilitySetValue:value forAttribute:attribute]; } @end