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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_VIEWS_ACCESSIBILITY_VIEW_ACCESSIBILITY_UTILS_H_
#define UI_VIEWS_ACCESSIBILITY_VIEW_ACCESSIBILITY_UTILS_H_
#include <unordered_set>
#include "ui/accessibility/ax_enums.mojom-forward.h"
#include "ui/accessibility/ax_node_data.h"
#include "ui/views/view.h"
#include "ui/views/widget/widget.h"
namespace views {
class VIEWS_EXPORT ViewAccessibilityUtils {
public:
// Returns a focused child widget if the view has a child that should be
// treated as a special case. For example, if a tab modal dialog is visible
// and focused, this will return the dialog when called on the BrowserView.
// This helper function is used to treat such widgets as separate windows for
// accessibility. Returns nullptr if no such widget is present.
static Widget* GetFocusedChildWidgetForAccessibility(const View* view);
// Used by GetFocusedChildWidgetForAccessibility to determine if a Widget
// should be handled separately.
static bool IsFocusedChildWidget(Widget* widget, const View* focused_view);
// Copies the accessible attributes from `source` to `destination`. If
// attributes are set in both, the ones in source takes precedence.
static void Merge(const ui::AXNodeData& source, ui::AXNodeData& destination);
// Iterates through the attributes set in `a` and validates they are not in
// `b`. This function acts as a guardrail to prevent Views authors from
// setting attributes both in the cache before it gets fully initialized and
// during the initialization step, through the
// `View::OnAccessibilityInitializing` function.
static void ValidateAttributesNotSet(const ui::AXNodeData& new_data,
const ui::AXNodeData& existing_data);
};
} // namespace views
#endif // UI_VIEWS_ACCESSIBILITY_VIEW_ACCESSIBILITY_UTILS_H_
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