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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_WEBAUTHN_PIN_TEXTFIELD_H_
#define CHROME_BROWSER_UI_VIEWS_WEBAUTHN_PIN_TEXTFIELD_H_
#include <memory>
#include <string>
#include <vector>
#include "ui/base/metadata/metadata_header_macros.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/render_text.h"
#include "ui/views/controls/textfield/textfield.h"
#include "ui/views/view.h"
namespace ui {
struct AXNodeData;
} // namespace ui
// Implements textfield for entering a PIN number with custom drawing logic for
// displaying each digit in a separate cell.
class PinTextfield : public views::Textfield {
METADATA_HEADER(PinTextfield, views::View)
public:
explicit PinTextfield(int pin_digits_count);
~PinTextfield() override;
// Appends a digit to the next free pin cell. Does nothing if all pin digits
// are already typed. Returns true if a digit was appended.
bool AppendDigit(std::u16string digit);
// Removes a digit from the last cell. Does nothing if no digits are typed.
// Returns true if a digit was removed.
bool RemoveDigit();
// Returns currently typed pin.
std::u16string GetPin();
void SetPin(const std::u16string& pin);
void SetObscured(bool obscured);
void SetDisabled(bool disabled);
// views::View:
void OnPaint(gfx::Canvas* canvas) override;
gfx::Size CalculatePreferredSize(
const views::SizeBounds& available_size) const override;
void OnThemeChanged() override;
protected:
// views::Textfield:
void UpdateAccessibleTextSelection() override;
private:
// Returns true for the first empty cell or the last cell when the full pin is
// typed (when the whole view has focus).
bool HasCellFocus(int cell) const;
// Updates the current selection and notifies that it changed along with the
// pin value.
void UpdateAccessibilityAfterPinChange();
void UpdatePinAccessibleValue();
// Updates text color based on the current state of `disabled_`.
void UpdateTextColor();
// Render text for each of the pin cells.
std::vector<std::unique_ptr<gfx::RenderText>> render_texts_;
// Amount of pin cells.
const int pin_digits_count_;
// Amount of digits that are currently typed.
int digits_typed_count_ = 0;
// Whether entering pin is currently disabled.
bool disabled_ = false;
// Whether the pin characters are currently obscured.
bool obscured_ = true;
};
#endif // CHROME_BROWSER_UI_VIEWS_WEBAUTHN_PIN_TEXTFIELD_H_
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