chromium/content/browser/accessibility/scoped_mode_collection.h

// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_ACCESSIBILITY_SCOPED_MODE_COLLECTION_H_
#define CONTENT_BROWSER_ACCESSIBILITY_SCOPED_MODE_COLLECTION_H_

#include <list>
#include <memory>

#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "content/common/content_export.h"
#include "ui/accessibility/ax_mode.h"

namespace content {

class ScopedAccessibilityMode;

// A collection of ScopedAccessibilityMode instances. The collection maintains
// an always up-to-date view of the union of all contained scopers, accessible
// via `accessibility_mode()`. Any change to this value (via calls to `Add()` to
// add a new item to the collection or via destruction of a scoper belonging to
// the collection) results in running the callback provided at construction. It
// is permissible for the collection to be destroyed while scopers minted from
// it remain alive.
class CONTENT_EXPORT ScopedModeCollection { … };

}  // namespace content

#endif  // CONTENT_BROWSER_ACCESSIBILITY_SCOPED_MODE_COLLECTION_H_