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// Copyright 2014 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 "ui/accessibility/platform/ax_platform_node.h"
#include "base/debug/crash_logging.h"
#include "base/lazy_instance.h"
#include "build/build_config.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/accessibility/platform/ax_platform_node_delegate.h"
#include "ui/base/buildflags.h"
namespace ui {
// static
base::LazyInstance<base::ObserverList<AXModeObserver>::Unchecked>::Leaky
AXPlatformNode::ax_mode_observers_ = LAZY_INSTANCE_INITIALIZER;
// static
base::LazyInstance<AXPlatformNode::NativeWindowHandlerCallback>::Leaky
AXPlatformNode::native_window_handler_ = LAZY_INSTANCE_INITIALIZER;
// static
AXMode AXPlatformNode::ax_mode_;
// static
gfx::NativeViewAccessible AXPlatformNode::popup_focus_override_ = nullptr;
// static
AXPlatformNode* AXPlatformNode::FromNativeWindow(
gfx::NativeWindow native_window) {
if (native_window_handler_.Get())
return native_window_handler_.Get().Run(native_window);
return nullptr;
}
#if !BUILDFLAG_INTERNAL_HAS_NATIVE_ACCESSIBILITY()
// static
AXPlatformNode* AXPlatformNode::FromNativeViewAccessible(
gfx::NativeViewAccessible accessible) {
return nullptr;
}
#endif // !BUILDFLAG_INTERNAL_HAS_NATIVE_ACCESSIBILITY()
// static
void AXPlatformNode::RegisterNativeWindowHandler(
AXPlatformNode::NativeWindowHandlerCallback handler) {
native_window_handler_.Get() = handler;
}
AXPlatformNode::AXPlatformNode() {}
AXPlatformNode::~AXPlatformNode() {
}
void AXPlatformNode::Destroy() {
}
int32_t AXPlatformNode::GetUniqueId() const {
DCHECK(GetDelegate()) << "|GetUniqueId| must be called after |Init|.";
return GetDelegate() ? GetDelegate()->GetUniqueId().Get() : -1;
}
void AXPlatformNode::SetIsPrimaryWebContentsForWindow(bool is_primary) {
is_primary_web_contents_for_window_ = is_primary;
}
bool AXPlatformNode::IsPrimaryWebContentsForWindow() const {
return is_primary_web_contents_for_window_;
}
std::string AXPlatformNode::ToString() {
return GetDelegate() ? GetDelegate()->ToString() : "No delegate";
}
std::string AXPlatformNode::SubtreeToString() {
return GetDelegate() ? GetDelegate()->SubtreeToString() : "No delegate";
}
std::ostream& operator<<(std::ostream& stream, AXPlatformNode& node) {
return stream << node.ToString();
}
// static
void AXPlatformNode::AddAXModeObserver(AXModeObserver* observer) {
ax_mode_observers_.Get().AddObserver(observer);
}
// static
void AXPlatformNode::RemoveAXModeObserver(AXModeObserver* observer) {
ax_mode_observers_.Get().RemoveObserver(observer);
}
// static
void AXPlatformNode::NotifyAddAXModeFlags(AXMode mode_flags) {
// Note: this is only called on Windows.
AXMode new_ax_mode(ax_mode_);
new_ax_mode |= mode_flags;
if (new_ax_mode == ax_mode_)
return; // No change.
ax_mode_ = new_ax_mode;
for (auto& observer : ax_mode_observers_.Get())
observer.OnAXModeAdded(mode_flags);
}
// static
void AXPlatformNode::SetPopupFocusOverride(
gfx::NativeViewAccessible popup_focus_override) {
popup_focus_override_ = popup_focus_override;
}
// static
gfx::NativeViewAccessible AXPlatformNode::GetPopupFocusOverride() {
return popup_focus_override_;
}
} // namespace ui