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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.
#ifndef UI_ACCESSIBILITY_NULL_AX_ACTION_TARGET_H_
#define UI_ACCESSIBILITY_NULL_AX_ACTION_TARGET_H_
#include "ui/accessibility/ax_action_target.h"
#include "ui/accessibility/ax_export.h"
namespace ui {
// A do-nothing action target.
class AX_EXPORT NullAXActionTarget : public AXActionTarget {
public:
NullAXActionTarget() = default;
~NullAXActionTarget() override = default;
protected:
// AXActionTarget overrides.
Type GetType() const override;
bool PerformAction(const AXActionData& action_data) const override;
gfx::Rect GetRelativeBounds() const override;
gfx::Point GetScrollOffset() const override;
gfx::Point MinimumScrollOffset() const override;
gfx::Point MaximumScrollOffset() const override;
void SetScrollOffset(const gfx::Point& point) const override;
bool SetSelection(const AXActionTarget* anchor_object,
int anchor_offset,
const AXActionTarget* focus_object,
int focus_offset) const override;
bool ScrollToMakeVisible() const override;
bool ScrollToMakeVisibleWithSubFocus(
const gfx::Rect& rect,
ax::mojom::ScrollAlignment horizontal_scroll_alignment,
ax::mojom::ScrollAlignment vertical_scroll_alignment,
ax::mojom::ScrollBehavior scroll_behavior) const override;
};
} // namespace ui
#endif // UI_ACCESSIBILITY_NULL_AX_ACTION_TARGET_H_
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