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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_AX_ACTION_TARGET_H_
#define UI_ACCESSIBILITY_AX_ACTION_TARGET_H_
#include "ui/accessibility/ax_enums.mojom-forward.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/rect.h"
namespace ui {
struct AXActionData;
// AXActionTarget is an abstract interface that can be used to carry out
// accessibility actions on nodes from an AXTreeSource without knowing the
// concrete class of that AXTreeSource.
class AXActionTarget {
public:
virtual ~AXActionTarget() = default;
enum class Type { kNull, kBlink, kPdf };
virtual Type GetType() const = 0;
virtual bool PerformAction(const AXActionData& action_data) const = 0;
virtual gfx::Rect GetRelativeBounds() const = 0;
virtual gfx::Point GetScrollOffset() const = 0;
virtual gfx::Point MinimumScrollOffset() const = 0;
virtual gfx::Point MaximumScrollOffset() const = 0;
virtual void SetScrollOffset(const gfx::Point& point) const = 0;
virtual bool SetSelected(bool selected) const = 0;
virtual bool SetSelection(const AXActionTarget* anchor_object,
int anchor_offset,
const AXActionTarget* focus_object,
int focus_offset) const = 0;
// Make this object visible by scrolling as many nested scrollable views as
// needed.
virtual bool ScrollToMakeVisible() const = 0;
// Same, but if the whole object can't be made visible, try for this subrect,
// in local coordinates.
virtual bool ScrollToMakeVisibleWithSubFocus(
const gfx::Rect& rect,
ax::mojom::ScrollAlignment horizontal_scroll_alignment,
ax::mojom::ScrollAlignment vertical_scroll_alignment,
ax::mojom::ScrollBehavior scroll_behavior) const = 0;
protected:
AXActionTarget() = default;
};
} // namespace ui
#endif // UI_ACCESSIBILITY_AX_ACTION_TARGET_H_
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