alertControllerViewController.py

"""
  note: Storyboard 未定義
"""
import ctypes
from enum import IntEnum, auto

from pyrubicon.objc.api import ObjCClass, ObjCInstance, Block
from pyrubicon.objc.api import objc_method, objc_property
from pyrubicon.objc.runtime import send_super, objc_id

from rbedge.enumerations import (
  UITableViewStyle,
  UIAlertControllerStyle,
  UIAlertActionStyle,
)

from rbedge.globalVariables import UITextFieldTextDidChangeNotification

from rbedge.functions import NSStringFromClass

from rbedge import pdbr

from pyLocalizedString import localizedString

UIViewController = ObjCClass('UIViewController')
NSLayoutConstraint = ObjCClass('NSLayoutConstraint')

UITableView = ObjCClass('UITableView')
UITableViewCell = ObjCClass('UITableViewCell')

UIAlertController = ObjCClass('UIAlertController')
UIAlertAction = ObjCClass('UIAlertAction')
NSNotificationCenter = ObjCClass('NSNotificationCenter')
NSOperationQueue = ObjCClass('NSOperationQueue')

UITextField = ObjCClass('UITextField')  # todo: 型確認


class AlertStyleTest(IntEnum):
  showSimpleAlert = 0
  showOkayCancelAlert = auto()
  showOtherAlert = auto()
  showTextEntryAlert = auto()
  showSecureTextEntryAlert = auto()

  @property
  def title(self):
    custom_names = {
      self.showSimpleAlert: 'Simple',
      self.showOkayCancelAlert: 'OK / Cancel',
      self.showOtherAlert: 'Three Buttons',
      self.showTextEntryAlert: 'Text Entry',
      self.showSecureTextEntryAlert: 'Secure Text Entry',
    }
    return custom_names.get(self, 'none')


class ActionSheetStyleTest(IntEnum):
  showOkayCancelActionSheet = 0
  howOtherActionSheet = auto()

  @property
  def title(self):
    custom_names = {
      self.showOkayCancelActionSheet: 'Confirm / Cancel',
      self.howOtherActionSheet: 'Destructive',
    }
    return custom_names.get(self, 'none')


class StyleSections(IntEnum):
  alertStyleSection = 0
  actionStyleSection = auto()

  @property
  def _data(self):
    custom_datas = {
      self.alertStyleSection: {
        'title': 'Alert Style',
        'items': AlertStyleTest,
      },
      self.actionStyleSection: {
        'title': 'Action Sheet Style',
        'items': ActionSheetStyleTest,
      },
    }
    return custom_datas.get(self, 'none')

  @property
  def items(self):
    return self._data['items']

  @property
  def title(self):
    return self._data['title']


class AlertControllerViewController(UIViewController):

  textDidChangeObserver: NSNotificationCenter = objc_property()
  secureTextAlertAction: UIAlertAction = objc_property()
  cell_identifier: str = objc_property()

  @objc_method
  def dealloc(self):
    # xxx: 呼ばない-> `send_super(__class__, self, 'dealloc')`
    print(f'- {NSStringFromClass(__class__)}: dealloc')

  @objc_method
  def viewDidLoad(self):
    send_super(__class__, self, 'viewDidLoad')

    # --- Navigation
    self.navigationItem.title = localizedString('AlertControllersTitle')
    # --- Table set
    self.cell_identifier = 'customCell'
    tableView = UITableView.alloc().initWithFrame_style_(
      self.view.bounds, UITableViewStyle.grouped)
    tableView.registerClass_forCellReuseIdentifier_(UITableViewCell,
                                                    self.cell_identifier)
    tableView.delegate = self
    tableView.dataSource = self

    # --- Layout
    self.view.addSubview_(tableView)
    tableView.translatesAutoresizingMaskIntoConstraints = False
    # areaLayoutGuide = self.view.safeAreaLayoutGuide
    areaLayoutGuide = self.view
    NSLayoutConstraint.activateConstraints_([
      tableView.centerXAnchor.constraintEqualToAnchor_(
        areaLayoutGuide.centerXAnchor),
      tableView.centerYAnchor.constraintEqualToAnchor_(
        areaLayoutGuide.centerYAnchor),
      tableView.widthAnchor.constraintEqualToAnchor_multiplier_(
        areaLayoutGuide.widthAnchor, 1.0),
      tableView.heightAnchor.constraintEqualToAnchor_multiplier_(
        areaLayoutGuide.heightAnchor, 1.0),
    ])

  @objc_method
  def viewWillAppear_(self, animated: bool):
    send_super(__class__,
               self,
               'viewWillAppear:',
               animated,
               argtypes=[
                 ctypes.c_bool,
               ])
    # print('viewWillAppear')

  @objc_method
  def viewDidAppear_(self, animated: bool):
    send_super(__class__,
               self,
               'viewDidAppear:',
               animated,
               argtypes=[
                 ctypes.c_bool,
               ])
    # print('viewDidAppear')

  @objc_method
  def viewWillDisappear_(self, animated: bool):
    send_super(__class__,
               self,
               'viewWillDisappear:',
               animated,
               argtypes=[
                 ctypes.c_bool,
               ])
    # print('viewWillDisappear')

  @objc_method
  def viewDidDisappear_(self, animated: bool):
    send_super(__class__,
               self,
               'viewDidDisappear:',
               animated,
               argtypes=[
                 ctypes.c_bool,
               ])
    # print('viewDidDisappear')

  @objc_method
  def didReceiveMemoryWarning(self):
    send_super(__class__, self, 'didReceiveMemoryWarning')
    print(f'{__class__}: didReceiveMemoryWarning')

  # MARK: - UIAlertControllerStyleAlert Style Alerts
  # Show an alert with an "OK" button.
  @objc_method
  def showSimpleAlert(self):
    title = localizedString('A Short Title is Best')
    message = localizedString(
      'A message needs to be a short, complete sentence.')
    cancelButtonTitle = localizedString('OK')

    alertController = UIAlertController.alertControllerWithTitle_message_preferredStyle_(
      title, message, UIAlertControllerStyle.alert)

    # Create the action.
    cancelAction = UIAlertAction.actionWithTitle_style_handler_(
      cancelButtonTitle, UIAlertActionStyle.cancel,
      Block(lambda: print("The simple alert's cancel action occurred."), None))

    # Add the action.
    alertController.addAction_(cancelAction)

    self.presentViewController(alertController, animated=True, completion=None)

  # Show an alert with an "OK" and "Cancel" button.
  @objc_method
  def showOkayCancelAlert(self):
    title = localizedString('A Short Title is Best')
    message = localizedString(
      'A message needs to be a short, complete sentence.')
    cancelButtonTitle = localizedString('Cancel')
    otherButtonTitle = localizedString('OK')

    alertController = UIAlertController.alertControllerWithTitle_message_preferredStyle_(
      title, message, UIAlertControllerStyle.alert)

    # Create the action.
    cancelAction = UIAlertAction.actionWithTitle_style_handler_(
      cancelButtonTitle, UIAlertActionStyle.cancel,
      Block(lambda: print("The 'OK/Cancel' alert's cancel action occurred."),
            None))
    otherAction = UIAlertAction.actionWithTitle_style_handler_(
      otherButtonTitle, UIAlertActionStyle.default,
      Block(lambda: print("The 'OK/Cancel' alert's other action occurred."),
            None))

    # Add the action.
    alertController.addAction_(cancelAction)
    alertController.addAction_(otherAction)

    self.presentViewController(alertController, animated=True, completion=None)

  # Show an alert with two custom buttons.
  @objc_method
  def showOtherAlert(self):
    title = localizedString('A Short Title is Best')
    message = localizedString(
      'A message needs to be a short, complete sentence.')
    cancelButtonTitle = localizedString('Cancel')
    otherButtonTitleOne = localizedString('Choice One')
    otherButtonTitleTwo = localizedString('Choice Two')

    alertController = UIAlertController.alertControllerWithTitle_message_preferredStyle_(
      title, message, UIAlertControllerStyle.alert)

    # Create the action.
    cancelAction = UIAlertAction.actionWithTitle_style_handler_(
      cancelButtonTitle, UIAlertActionStyle.cancel,
      Block(lambda: print("The 'Other' alert's cancel action occurred."),
            None))
    otherButtonOneAction = UIAlertAction.actionWithTitle_style_handler_(
      otherButtonTitleOne, UIAlertActionStyle.default,
      Block(
        lambda: print("The 'Other' alert's other button one action occurred."),
        None))
    otherButtonTwoAction = UIAlertAction.actionWithTitle_style_handler_(
      otherButtonTitleTwo, UIAlertActionStyle.default,
      Block(
        lambda: print("The 'Other' alert's other button two action occurred."),
        None))

    # Add the action.
    alertController.addAction_(cancelAction)
    alertController.addAction_(otherButtonOneAction)
    alertController.addAction_(otherButtonTwoAction)

    self.presentViewController(alertController, animated=True, completion=None)

  # Show a text entry alert with two custom buttons.
  @objc_method
  def showTextEntryAlert(self):
    title = localizedString('A Short Title is Best')
    message = localizedString(
      'A message needs to be a short, complete sentence.')

    alertController = UIAlertController.alertControllerWithTitle_message_preferredStyle_(
      title, message, UIAlertControllerStyle.alert)

    # Add the text field for text entry.
    @Block
    def configurationHandler(textField: objc_id) -> None:
      # If you need to customize the text field, you can do so here.
      pass

    alertController.addTextFieldWithConfigurationHandler_(configurationHandler)

    # Create the actions.
    cancelButtonTitle = localizedString('Cancel')
    cancelAction = UIAlertAction.actionWithTitle_style_handler_(
      cancelButtonTitle, UIAlertActionStyle.cancel,
      Block(lambda: print("The 'Text Entry' alert's cancel action occurred."),
            None))

    otherButtonTitle = localizedString('OK')
    otherAction = UIAlertAction.actionWithTitle_style_handler_(
      otherButtonTitle, UIAlertActionStyle.default,
      Block(lambda: print("The 'Text Entry' alert's other action occurred."),
            None))

    # Add the action.
    alertController.addAction_(cancelAction)
    alertController.addAction_(otherAction)

    self.presentViewController(alertController, animated=True, completion=None)

  # Show a secure text entry alert with two custom buttons.
  @objc_method
  def showSecureTextEntryAlert(self):
    title = localizedString('A Short Title is Best')
    message = localizedString(
      'A message needs to be a short, complete sentence.')
    cancelButtonTitle = localizedString('Cancel')
    otherButtonTitle = localizedString('OK')

    alertController = UIAlertController.alertControllerWithTitle_message_preferredStyle_(
      title, message, UIAlertControllerStyle.alert)

    @Block
    def configurationHandler(_textField: objc_id) -> None:
      textField = ObjCInstance(_textField)
      if (observer := self.textDidChangeObserver) is not None:
        NSNotificationCenter.defaultCenter.removeObserver_(observer)

      @Block
      def usingBlock(_notification: objc_id) -> None:
        notification = ObjCInstance(_notification)
        if (textField := notification.object).isKindOfClass_(UITextField):

          # Enforce a minimum length of >= 5 characters for secure text alerts.
          # セキュア テキスト アラートの最小長は 5 文字以上にする必要があります。
          if (alertAction := self.secureTextAlertAction):
            if (text := textField.text):
              alertAction.setEnabled_(text.length >= 5)
            else:
              alertAction.setEnabled_(False)

      # Listen for changes to the text field's text so that we can toggle the current action's enabled property based on whether the user has entered a sufficiently secure entry.
      # ユーザーが十分に安全なエントリを入力したかどうかに基づいて、現在のアクションの有効なプロパティを切り替えることができるように、テキスト フィールドのテキストへの変更をリッスンします。

      self.textDidChangeObserver = NSNotificationCenter.defaultCenter.addObserverForName(
        UITextFieldTextDidChangeNotification,
        object=textField,
        queue=NSOperationQueue.mainQueue,
        usingBlock=usingBlock)
      textField.setSecureTextEntry_(True)

    # Add the text field for the secure text entry.
    alertController.addTextFieldWithConfigurationHandler_(configurationHandler)
    # Create the actions.
    cancelAction = UIAlertAction.actionWithTitle_style_handler_(
      cancelButtonTitle, UIAlertActionStyle.cancel,
      Block(
        lambda: print("The 'Secure Text Entry' alert's cancel action occurred."
                      ), None))
    otherAction = UIAlertAction.actionWithTitle_style_handler_(
      otherButtonTitle, UIAlertActionStyle.default,
      Block(
        lambda: print("The 'Secure Text Entry' alert's other action occurred."
                      ), None))
    # The text field initially has no text in the text field, so we'll disable it for now. It will be re-enabled when the first character is typed.
    # テキストフィールドには最初はテキストがないため、ここでは無効にします。最初の文字が入力されると再び有効になります。
    otherAction.setEnabled_(False)

    # Hold onto the secure text alert action to toggle the enabled / disabled state when the text changed.
    # セキュア テキスト アラート アクションを押し続けると、テキストが変更されたときに有効/無効状態が切り替わります。
    self.secureTextAlertAction = otherAction

    # Add the actions.
    alertController.addAction_(cancelAction)
    alertController.addAction_(otherAction)

    self.presentViewController(alertController, animated=True, completion=None)

  # MARK: - UIAlertControllerStyleActionSheet Style Alerts
  # Show a dialog with an "OK" and "Cancel" button.
  @objc_method
  def showOkayCancelActionSheet_(self, selectedIndexPath):
    message = localizedString(
      'A message needs to be a short, complete sentence.')
    cancelButtonTitle = localizedString('Cancel')
    destructiveButtonTitle = localizedString('Confirm')

    alertController = UIAlertController.alertControllerWithTitle_message_preferredStyle_(
      None, message, UIAlertControllerStyle.actionSheet)

    # Create the actions.
    cancelAction = UIAlertAction.actionWithTitle_style_handler_(
      cancelButtonTitle, UIAlertActionStyle.cancel,
      Block(
        lambda: print(
          "The 'OK/Cancel' alert action sheet's cancel action occurred."),
        None))
    destructiveAction = UIAlertAction.actionWithTitle_style_handler_(
      destructiveButtonTitle, UIAlertActionStyle.default,
      Block(
        lambda: print(
          "The 'Confirm' alert action sheet's destructive action occurred."),
        None))

    # Add the actions.
    alertController.addAction_(cancelAction)
    alertController.addAction_(destructiveAction)

    # Configure the alert controller's popover presentation controller if it has one.
    # アラート コントローラーのポップオーバー プレゼンテーション コントローラーがある場合は、それを構成します。
    if (popoverPresentationController :=
        alertController.popoverPresentationController()) is not None:
      print('# popovers あり')
      print('\t- wip')
      print(popoverPresentationController)
      # Note for popovers the Cancel button is hidden automatically.
      # ポップオーバーの場合、「キャンセル」ボタンは自動的に非表示になることに注意してください。
      # wip: popovers の出る条件が不明なため、ペンディング
    self.presentViewController(alertController, animated=True, completion=None)

  # Show a dialog with two custom buttons.
  @objc_method
  def showOtherActionSheet_(self, selectedIndexPath):
    message = localizedString(
      'A message needs to be a short, complete sentence.')
    destructiveButtonTitle = localizedString('Destructive Choice')
    otherButtonTitle = localizedString('Safe Choice')

    alertController = UIAlertController.alertControllerWithTitle_message_preferredStyle_(
      None, message, UIAlertControllerStyle.actionSheet)

    # Create the actions.
    destructiveAction = UIAlertAction.actionWithTitle_style_handler_(
      destructiveButtonTitle, UIAlertActionStyle.destructive,
      Block(
        lambda: print(
          "The 'Other' alert action sheet's destructive action occurred."),
        None))
    otherAction = UIAlertAction.actionWithTitle_style_handler_(
      otherButtonTitle, UIAlertActionStyle.default,
      Block(
        lambda: print("The 'Other' alert action sheet's other action occurred."
                      ), None))

    # Add the actions.
    alertController.addAction_(destructiveAction)
    alertController.addAction_(otherAction)

    # Configure the alert controller's popover presentation controller if it has one.
    if (popoverPresentationController :=
        alertController.popoverPresentationController()) is not None:
      print('# popovers あり')
      print('\t- wip')
      print(popoverPresentationController)
      # Note for popovers the Cancel button is hidden automatically.
      # wip: popovers の出る条件が不明なため、ペンディング
    self.presentViewController(alertController, animated=True, completion=None)

  # --- UITableViewDelegate
  @objc_method
  def tableView_didSelectRowAtIndexPath_(self, tableView, indexPath):
    if (section := indexPath.section) == StyleSections.alertStyleSection:
      if (row := indexPath.row) == AlertStyleTest.showSimpleAlert:
        self.showSimpleAlert()
      elif row == AlertStyleTest.showOkayCancelAlert:
        self.showOkayCancelAlert()
      elif row == AlertStyleTest.showOtherAlert:
        self.showOtherAlert()
      elif row == AlertStyleTest.showTextEntryAlert:
        self.showTextEntryAlert()
      elif row == AlertStyleTest.showSecureTextEntryAlert:
        self.showSecureTextEntryAlert()

    elif section == StyleSections.actionStyleSection:
      if (row :=
          indexPath.row) == ActionSheetStyleTest.showOkayCancelActionSheet:
        self.showOkayCancelActionSheet_(indexPath)
      elif row == ActionSheetStyleTest.howOtherActionSheet:
        self.showOtherActionSheet_(indexPath)

    tableView.deselectRowAtIndexPath_animated_(indexPath, True)

  # --- UITableViewDataSource
  @objc_method
  def numberOfSectionsInTableView_(self, tableView) -> int:
    return len(StyleSections)

  @objc_method
  def tableView_titleForHeaderInSection_(self, tableView,
                                         section: int) -> objc_id:
    return StyleSections(section).title

  @objc_method
  def tableView_numberOfRowsInSection_(self, tableView, section: int) -> int:
    return len(StyleSections(section).items)

  @objc_method
  def tableView_cellForRowAtIndexPath_(self, tableView, indexPath) -> objc_id:
    cell = tableView.dequeueReusableCellWithIdentifier_forIndexPath_(
      self.cell_identifier, indexPath)

    contentConfiguration = cell.defaultContentConfiguration()
    contentConfiguration.text = StyleSections(indexPath.section).items(
      indexPath.row).title

    cell.contentConfiguration = contentConfiguration
    return cell


if __name__ == '__main__':
  from rbedge.app import App
  from rbedge.enumerations import UIModalPresentationStyle

  main_vc = AlertControllerViewController.new()
  _title = NSStringFromClass(AlertControllerViewController)
  main_vc.navigationItem.title = _title

  #presentation_style = UIModalPresentationStyle.fullScreen
  presentation_style = UIModalPresentationStyle.pageSheet

  app = App(main_vc, presentation_style)
  app.present()