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// 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 ASH_QUICK_INSERT_QUICK_INSERT_INSERT_MEDIA_REQUEST_H_
#define ASH_QUICK_INSERT_QUICK_INSERT_INSERT_MEDIA_REQUEST_H_
#include <optional>
#include <string>
#include <variant>
#include "ash/ash_export.h"
#include "ash/quick_insert/quick_insert_insert_media.h"
#include "ash/quick_insert/quick_insert_rich_media.h"
#include "base/functional/callback_forward.h"
#include "base/scoped_observation.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "ui/base/ime/input_method_observer.h"
namespace ui {
class InputMethod;
class TextInputClient;
} // namespace ui
namespace ash {
struct QuickInsertWebPasteTarget;
// Inserts rich media such as text and images into an input field.
class ASH_EXPORT QuickInsertInsertMediaRequest
: public ui::InputMethodObserver {
public:
enum class Result {
kSuccess,
// There was no compatible input field to insert in during the timeout.
kTimeout,
// The insertion failed because the input field was incompatible.
kUnsupported,
// The media was not found.
kNotFound,
};
using OnCompleteCallback = base::OnceCallback<void(Result)>;
// Creates a request to insert `data` in the next focused input field.
// If there's no focus change within `insert_timeout`, then this
// request is cancelled. If this request is destroyed before insertion could
// happen, the request is cancelled.
// If `on_complete_callback` is valid, it is called when the insert
// completed successfully, or when there is an error, such as no insertion
// happened before the timeout.
explicit QuickInsertInsertMediaRequest(
ui::InputMethod* input_method,
const QuickInsertRichMedia& media,
base::TimeDelta insert_timeout,
base::OnceCallback<std::optional<QuickInsertWebPasteTarget>()>
get_web_paste_target = {},
OnCompleteCallback on_complete_callback = {});
~QuickInsertInsertMediaRequest() override;
// ui::InputMethodObserver:
void OnFocus() override {}
void OnBlur() override {}
void OnCaretBoundsChanged(const ui::TextInputClient* client) override {}
void OnTextInputStateChanged(const ui::TextInputClient* client) override;
void OnInputMethodDestroyed(const ui::InputMethod* input_method) override;
private:
// Cancels the insertion if it's still pending.
// Does nothing if the insertion has already happened.
void CancelPendingInsert();
std::optional<QuickInsertRichMedia> media_to_insert_;
base::OnceCallback<std::optional<QuickInsertWebPasteTarget>()>
get_web_paste_target_;
base::ScopedObservation<ui::InputMethod, ui::InputMethodObserver>
observation_{this};
base::OneShotTimer insert_timeout_timer_;
// This is guaranteed to be non-null before the insertion is complete (even if
// a null callback is passed in the constructor), and null afterwards.
OnCompleteCallback on_complete_callback_;
};
} // namespace ash
#endif // ASH_QUICK_INSERT_QUICK_INSERT_INSERT_MEDIA_REQUEST_H_
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