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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 CHROME_BROWSER_UI_VIEWS_AUTOFILL_POPUP_POPUP_SEARCH_BAR_VIEW_H_
#define CHROME_BROWSER_UI_VIEWS_AUTOFILL_POPUP_POPUP_SEARCH_BAR_VIEW_H_
#include <string>
#include <string_view>
#include "base/functional/callback.h"
#include "base/memory/raw_ref.h"
#include "base/timer/timer.h"
#include "ui/base/interaction/element_identifier.h"
#include "ui/gfx/geometry/point.h"
#include "ui/views/controls/textfield/textfield_controller.h"
#include "ui/views/focus/focus_manager.h"
#include "ui/views/view.h"
namespace views {
class Button;
class Textfield;
} // namespace views
namespace autofill {
// This view enables users to filter popup suggestions. It contains
// the necessary elements for user input (text field, controls) and offers
// an API that allows the hosting popup to retrieve search queries and receive
// input event notifications.
class PopupSearchBarView : public views::View,
public views::FocusChangeListener,
public views::TextfieldController {
METADATA_HEADER(PopupSearchBarView, views::View)
public:
using OnInputChangedCallback =
base::RepeatingCallback<void(const std::u16string&)>;
class Delegate {
public:
// Called when text in the textfield changes. Calls are throttled with
// a delay of kInputChangeCallbackDelay to avoid excessive triggering.
virtual void SearchBarOnInputChanged(std::u16string_view text) = 0;
// Called when the controls (textfield and clear button) lose focus.
virtual void SearchBarOnFocusLost() = 0;
// Keyboard events from the textfield are passed to this method first.
// The delegate returns `true` if the event was handled, this suppresses
// the default behaviour in the textfield. As an example, the LEFT/RIGHT
// arrow keys handled will not change the position of the text cursor.
virtual bool SearchBarHandleKeyPressed(const ui::KeyEvent& event) = 0;
protected:
virtual ~Delegate() = default;
};
DECLARE_CLASS_ELEMENT_IDENTIFIER_VALUE(kInputField);
// The delay between the textfield text change and triggering
// the `OnInputChangedCallback`, used to throttle fast user input.
static constexpr base::TimeDelta kInputChangeCallbackDelay =
base::Milliseconds(250);
PopupSearchBarView(const std::u16string& placeholder, Delegate& delegate);
PopupSearchBarView(const PopupSearchBarView&) = delete;
PopupSearchBarView& operator=(const PopupSearchBarView&) = delete;
~PopupSearchBarView() override;
// views::View:
void AddedToWidget() override;
void RemovedFromWidget() override;
// views::FocusChangeListener:
void OnDidChangeFocus(View* focused_before, View* focused_now) override;
// views::TextfieldController:
bool HandleKeyEvent(views::Textfield* sender,
const ui::KeyEvent& key_event) override;
// Focuses on the input field.
void Focus();
void SetInputTextForTesting(const std::u16string& text);
gfx::Point GetClearButtonScreenCenterPointForTesting() const;
// TODO(crbug.com/325246516): Add methods to support communication with its
// hosting poopup view.
private:
void OnInputChanged();
void OnClearPressed();
const raw_ref<Delegate> delegate_;
raw_ptr<views::Textfield> input_ = nullptr;
raw_ptr<views::Button> clear_ = nullptr;
base::CallbackListSubscription input_changed_subscription_;
base::OneShotTimer input_change_notification_timer_;
};
} // namespace autofill
#endif // CHROME_BROWSER_UI_VIEWS_AUTOFILL_POPUP_POPUP_SEARCH_BAR_VIEW_H_
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