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// Copyright 2019 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/ax_active_popup.h"
namespace ui {
// Represents a global storage for the view accessibility for an
// autofill popup. It is a singleton wrapper around the ax unique id of the
// autofill popup. This singleton is used for communicating the live status of
// the autofill popup between web contents and views.
// The assumption here is that only one autofill popup can exist at a time.
static base::NoDestructor<base::Optional<int32_t>> g_active_popup_ax_unique_id;
base::Optional<int32_t> GetActivePopupAxUniqueId() {
return *g_active_popup_ax_unique_id;
}
void SetActivePopupAxUniqueId(base::Optional<int32_t> ax_unique_id) {
// When an instance of autofill popup hides, the caller of popup hide should
// make sure g_active_popup_ax_unique_id is cleared. The assumption is that
// there can only be one active autofill popup existing at a time. If on
// popup showing, we encounter g_active_popup_ax_unique_id is already set,
// this would indicate two autofill popups are showing at the same time or
// previous on popup hide call did not clear the variable, so we should fail
// DCHECK here.
DCHECK(!GetActivePopupAxUniqueId());
*g_active_popup_ax_unique_id = ax_unique_id;
}
void ClearActivePopupAxUniqueId() {
*g_active_popup_ax_unique_id = base::nullopt;
}
} // namespace ui
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