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// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_ACCESSIBILITY_AX_EVENT_INTENT_H_
#define UI_ACCESSIBILITY_AX_EVENT_INTENT_H_
#include <string>
#include "ui/accessibility/ax_base_export.h"
#include "ui/accessibility/ax_enums.mojom.h"
namespace ui {
// Describes what caused an accessibility event to be raised. For example, a
// character could have been typed, a word replaced, or a line deleted. Or, the
// selection could have been extended to the beginning of the previous word, or
// it could have been moved to the end of the next line.
struct AX_BASE_EXPORT AXEventIntent final {
// Constructs an empty event intent.
AXEventIntent();
// Constructs an event intent which contains only a command without any other
// arguments. This is used e.g. by the selection changed event when the
// current selection is cleared.
explicit AXEventIntent(ax::mojom::Command command);
// Constructs an editing event intent; which is primarily attached to a text
// changed or a text attributes changed event. Note that for such intents both
// the "text_boundary" and "move_direction" members are set to "kNone".
AXEventIntent(ax::mojom::Command command,
ax::mojom::InputEventType input_event_type);
// Constructs a selection event intent; which is attached to a selection
// changed event. Note that for such intents the "input_event_type" member is
// set to "kNone".
AXEventIntent(ax::mojom::Command command,
ax::mojom::TextBoundary text_boundary,
ax::mojom::MoveDirection move_direction);
virtual ~AXEventIntent();
AXEventIntent(const AXEventIntent& intent);
AXEventIntent& operator=(const AXEventIntent& intent);
friend AX_BASE_EXPORT bool operator==(const AXEventIntent& a,
const AXEventIntent& b);
friend AX_BASE_EXPORT bool operator!=(const AXEventIntent& a,
const AXEventIntent& b);
ax::mojom::Command command = ax::mojom::Command::kNone;
ax::mojom::InputEventType input_event_type = ax::mojom::InputEventType::kNone;
// TODO(nektar): Split TextBoundary into TextUnit and TextBoundary.
ax::mojom::TextBoundary text_boundary = ax::mojom::TextBoundary::kNone;
ax::mojom::MoveDirection move_direction = ax::mojom::MoveDirection::kNone;
// Returns a string representation of this data, for debugging.
std::string ToString() const;
};
} // namespace ui
#endif // UI_ACCESSIBILITY_AX_EVENT_INTENT_H_
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