custom_alert_view.rb

module ADR
  class CustomAlertView
    include Accessibility

    def event_text
      @event_text
    end

    def initialize(control_creator)
      @modal_container = UIView.alloc.initWithFrame(UIScreen.mainScreen.bounds)
      @modal_container.backgroundColor = UIColor.blackColor.colorWithAlphaComponent(0.5)

      mx, my, mw, mh = [modal_left, modal_top, modal_width, modal_height]
      @main_container = UIView.alloc.initWithFrame(CGRectMake(mx, my, mw, mh))
      @main_container.backgroundColor = UIColor.whiteColor
      @main_container.layer.borderColor = UIColor.blackColor
      @main_container.layer.borderWidth = 1.0
      @modal_container.addSubview @main_container
      @event_title = control_creator.label(10, 10, modal_width - 20, 40, text: "", font_size: 20)
      @event_title.textColor = UIColor.blackColor
      @event_title.textAlignment = UITextAlignmentCenter
      @event_text = control_creator.label(10, 50, modal_width - 20, 150)
      @event_text.textColor = UIColor.blackColor
      @event_text.text = ""
      @event_text.textAlignment = UITextAlignmentCenter
      @main_container.addSubview(@event_title)
      @main_container.addSubview(@event_text)

      @buttons = []

      @control_creator = control_creator
    end

    def modal_left
      (device_width - modal_width) / 2
    end

    def modal_top
      (device_height - modal_height) / 2
    end

    def modal_bottom
      modal_top + modal_height
    end

    def device_width
      UIScreen.mainScreen.bounds.size.width
    end

    def device_height
      UIScreen.mainScreen.bounds.size.height
    end

    def modal_height
      460
    end

    def modal_width
      300
    end

    def initWithTitle(title, opts = { })
      @title = title
      @message = opts[:message]
      @delegate = opts[:delegate]
      @cancel_button_title = opts[:cancelButtonTitle]
      @other_button_titles = opts[:otherButtonTitles] || []
      @a11y = opts[:a11y]
      @parent = opts[:parent]
    end

    def button_height
      40
    end

    def button_padding
      5
    end

    def from_bottom(index)
      index += 1
      (modal_bottom) - (button_padding * index) - (button_height * index)
    end

    def selected(index)
      @delegate.alertView(self, clickedButtonAtIndex: index)
      @modal_container.fade_out(0.1)
      BubbleWrap::App.run_after(0.3) {
        UIAccessibilityPostNotification(UIAccessibilityScreenChangedNotification, @a11y) if accessibility_enabled?
        @modal_container.removeFromSuperview
      }
    end

    def add_button(index, text)
      button = @control_creator.game_button(text)
      button.geometry modal_left + 10, from_bottom(index), modal_width - 20, button_height
      button.setTitleColor(UIColor.blackColor, forState: UIControlStateNormal)
      button.setTitleColor(bluish, forState: UIControlStateHighlighted)

      button.when(UIControlEventTouchUpInside) do
        selected(text)
      end

      @buttons << button
      @modal_container.addSubview(button)
    end

    def show
      @buttons.each { |b| b.removeFromSuperview }
      @buttons.clear

      @event_text.text = @message
      @event_title.text = @title
      @modal_container.hide
      @parent.addSubview(@modal_container)
      @parent.bringSubviewToFront(@modal_container)

      cancel_button_added = false

      if @cancel_button_title
        add_button(0, @cancel_button_title)
        cancel_button_added = true
      end

      offset = 0
      offset = 1 if cancel_button_added

      @other_button_titles.reverse.each_with_index do |v, i|
        add_button(i + offset, v)
      end

      @modal_container.fade_in(0.1)

      BubbleWrap::App.run_after(0.5) {
        if accessibility_enabled?
          control_notification = @event_text
          if(@event_title.text != "")
            control_notification = @event_title
          end
          UIAccessibilityPostNotification(UIAccessibilityScreenChangedNotification, control_notification)
        end
      }
    end

    def label x, y, width, height, options = { }
      UILabel.alloc.initWithFrame(CGRectMake(x, y, width, height))
    end

    def bluish
      return UIColor.colorWithRed(0.0/255.0,
                                  green: 96.0/255.0,
                                  blue: 255.0/255.0,
                                  alpha: 1)
    end
  end
end