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// Copyright 2019 The Chromium Authors
// 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 {
namespace {
std::optional<AXNodeID>& GetActivePopupAXUniqueIdInstance() {
// Keeps track of the unique ID that can be used to retrieve the
// `ViewAccessibility` object that is handling the accessibility for the
// currently active 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 std::optional<AXNodeID> active_popup_ax_unique_id;
return active_popup_ax_unique_id;
}
} // namespace
std::optional<AXNodeID> GetActivePopupAxUniqueId() {
return GetActivePopupAXUniqueIdInstance();
}
void SetActivePopupAxUniqueId(std::optional<AXNodeID> ax_unique_id) {
// When an instance of autofill popup hides, the caller of popup hide should
// make sure 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 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
// via DCHECK here.
DCHECK(!GetActivePopupAXUniqueIdInstance());
GetActivePopupAXUniqueIdInstance() = ax_unique_id;
}
void ClearActivePopupAxUniqueId() {
GetActivePopupAXUniqueIdInstance() = std::nullopt;
}
} // namespace ui
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