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/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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
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