lighttroupe/luz

class GuiListPopup < GuiBox
    easy_accessor :item_aspect_ratio

    pipe :get_value, :list
    pipe :set_value, :list

    callback :selected

    def initialize(pointer)
        super()
        @pointer = pointer
        create!
    end

    def set_objects(objects)
        @objects = objects
        @objects.each { |object|
            object.on_clicked {
                @objects.each { |o2| o2.animate(:opacity => 0.2) unless object == o2 }        # FX: all but the selected item disappears
                selected_notify(object)
                exit!
            }
        }

        unless @list
            # HACK to build the list once we have item_aspect_ratio available (after new.set)
            self << (@list = (GuiList.new(@objects).set(:scale_x => 0.95, :scale_y => 0.7, :scroll_wrap => true, :spacing_y => -1.0, :item_aspect_ratio => item_aspect_ratio)))
        end

        # Pointer takes responsibility for this window, and it auto-closes when pointer clicks away
        @pointer.capture_object!(self) { |click_object|        # callback is for a click
            if @objects.include?(click_object)
                selected_notify(click_object)
                false        # drop capture, user has selected...
            elsif @contents.include?(click_object)
                true        # user is working with the popup... keep the capture
            else
                @pointer.uncapture_object!
                exit!
                false
            end
        }

        self
    end

private

    def create!
        self << GuiObject.new.set(:background_image => $engine.load_image('images/list-popup-background.png'))
        self << @up_button = GuiButton.new.set(:background_image => $engine.load_image('images/buttons/scroll-up.png'), :background_image_hover => $engine.load_image('images/buttons/scroll-up-hover.png'),:background_image_click => $engine.load_image('images/buttons/scroll-up-click.png'), :offset_y => 0.4, :scale_y => 0.06)
        self << @down_button = GuiButton.new.set(:background_image => $engine.load_image('images/buttons/scroll-up.png'), :background_image_hover => $engine.load_image('images/buttons/scroll-up-hover.png'),:background_image_click => $engine.load_image('images/buttons/scroll-up-click.png'), :offset_y => -0.4, :scale_y => -0.06)
        #@list.scroll_to(self.get_value)
        @up_button.on_holding { |pointer| @list.scroll_by(pointer, -0.1) }
        @down_button.on_holding { |pointer| @list.scroll_by(pointer, 0.1) }
    end
end