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Chromium HTML Input 类型password 对应c++

article 2025/1/16 12:34:30

一、密码字段：

密码字段通过标签 <input type="password"> 来定义:

<form>
Password: <input type="password" name="pwd">
</form>

二、password 对应c++定义：

third_party\blink\renderer\core\html\forms\password_input_type.h

third_party\blink\renderer\core\html\forms\password_input_type.cc

namespace blink {

class KeyboardEvent;

class PasswordInputType final : public BaseTextInputType {
 public:
  explicit PasswordInputType(HTMLInputElement& element)
      : BaseTextInputType(Type::kPassword, element) {}

 private:
  void CountUsage() override;
  bool ShouldSaveAndRestoreFormControlState() const override;
  FormControlState SaveFormControlState() const override;
  void RestoreFormControlState(const FormControlState&) override;
  bool ShouldRespectListAttribute() override;

  bool NeedsContainer() const override;
  void CreateShadowSubtree() override;

  void UpdateView() override;
  void CapsLockStateMayHaveChanged() override;
  bool ShouldDrawCapsLockIndicator() const override;
  void UpdatePasswordRevealButton();
  void UpdateStrongPasswordLabel();
  void DidSetValueByUserEdit() override;
  void DidSetValue(const String&, bool value_changed) override;

  void ForwardEvent(Event& event) override;
  void HandleKeydownEvent(KeyboardEvent&) override;
  void HandleBeforeTextInsertedEvent(BeforeTextInsertedEvent&) override;

  void HandleBlurEvent() override;
  bool SupportsInputModeAttribute() const override;
  bool IsAutoDirectionalityFormAssociated() const override;

  bool should_draw_caps_lock_indicator_ = false;
  bool should_show_reveal_button_ = false;
};

template <>
struct DowncastTraits<PasswordInputType> {
  static bool AllowFrom(const InputType& type) {
    return type.IsPasswordInputType();
  }
};

}  // namespace blink