package feathers.examples
{
    import feathers.controls.Button;
    import feathers.controls.List;
    import feathers.controls.Scroller;
    import feathers.core.FeathersControl;
    import feathers.data.ListCollection;
    import feathers.examples.BlogListItemRenderer;
    import feathers.layout.VerticalLayout;

    import flash.display.BitmapData;
    import flash.events.IOErrorEvent;
    import flash.events.SecurityErrorEvent;
    import flash.geom.Matrix;
    import flash.net.URLLoader;
    import flash.net.URLLoaderDataFormat;
    import flash.net.URLRequest;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;
    import flash.text.TextFormat;
    import flash.xml.XMLDocument;

    import starling.display.Sprite;
    import starling.events.Event;
    import starling.textures.Texture;

    /**
     * A very basic example to create a Button with Feathers.
     */
    public class Main extends Sprite
    {
        private var _list:List;

        public function Main()
        {
            //we'll initialize things after we've been added to the stage
            this.addEventListener(Event.ADDED_TO_STAGE, addedToStageHandler);
        }

        protected function addedToStageHandler(event:Event):void
        {
            this.removeEventListener(Event.ADDED_TO_STAGE, addedToStageHandler);

            // make list control
            _list = new List();
            _list.width = 300;
            _list.height = 768;

            // properties
            _list.itemRendererProperties.horizontalAlign = Button.HORIZONTAL_ALIGN_LEFT;
            _list.itemRendererProperties.verticalAlign = Button.VERTICAL_ALIGN_MIDDLE;
            var vl:VerticalLayout = new VerticalLayout();
            vl.hasVariableItemDimensions = true;
            _list.layout = vl;
            _list.scrollerProperties.snapScrollPositionsToPixels = true;
            _list.scrollerProperties.verticalScrollPolicy = Scroller.SCROLL_POLICY_ON;

            // cell renderer
            _list.itemRendererType = BlogListItemRenderer;

            // add list to display
            addChild(_list);

            // get Blog data
            var xmlLoader:URLLoader = new URLLoader();
            xmlLoader.dataFormat = URLLoaderDataFormat.TEXT;
            xmlLoader.addEventListener(flash.events.Event.COMPLETE, _handleXMLLoaded, false, 0, true);
            xmlLoader.addEventListener(IOErrorEvent.IO_ERROR, _handleXMLError, false, 0, true);
            xmlLoader.addEventListener(IOErrorEvent.NETWORK_ERROR, _handleXMLError, false, 0, true);
            xmlLoader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, _handleXMLError, false, 0, true);

            // cnn blog feed for testing
            xmlLoader.load(new URLRequest('http://politicalticker.blogs.cnn.com/feed/'));
        }

        private function _handleXMLLoaded(e:flash.events.Event):void
        {
            if (e.type != Event.COMPLETE) {  return; }

            // get data in list form
            var dataList:XMLList = XMLList(XML(e.target.data).channel.item);

            // data for collection
            var dataProvided:Array = new Array();

            // get only 10 items
            for (var feedIndex:int = 0; feedIndex < 10; feedIndex++)
            {
                // populate an object to add to array
                var currentData:Object = new Object();

                // container used to draw() into BitmapData
                var container:flash.display.Sprite = new flash.display.Sprite();

                // Blog title
                var tt:TextField = new TextField();
                container.addChild(tt);
                tt.autoSize = TextFieldAutoSize.LEFT;
                tt.multiline = true;
                tt.wordWrap = true;
                tt.text = String(new XMLDocument(dataList[feedIndex].title.text()).firstChild.nodeValue);
                tt.width = 250;
                tt.y = 5;
                tt.x = 10;
                tt.setTextFormat(new TextFormat("Arial",15,0x333333));

                // Blog date
                var dt:TextField = new TextField();
                container.addChild(dt);
                dt.autoSize = TextFieldAutoSize.LEFT;
                dt.wordWrap = true;
                var feedDateStr:String = dataList[feedIndex].pubDate.text();
                feedDateStr = feedDateStr.replace(/\,/g, "");
                var feedDate:Date = new Date(feedDateStr);
                dt.text = String(feedDate.toDateString());
                dt.width = 250;
                dt.y = int(tt.y + tt.height);
                dt.x = 10;
                dt.setTextFormat(new TextFormat("Arial",13,0x999999,false,true));

                // Blog description
                var st:TextField = new TextField();
                container.addChild(st);
                st.autoSize = TextFieldAutoSize.LEFT;
                st.multiline = true;
                st.wordWrap = true;
                st.text = String(new XMLDocument(dataList[feedIndex].description.text()).firstChild.nodeValue).substr(0,120);
                if (String(new XMLDocument(dataList[feedIndex].description.text()).firstChild.nodeValue).length > 120)
                {
                    st.appendText(" [..]");
                }
                st.width = 250;
                st.y = int(dt.y + dt.height);
                st.x = 10;
                st.setTextFormat(new TextFormat("Arial",13,0x333333));

                // generate a simple white square background
                var cellBG:flash.display.Sprite = new flash.display.Sprite();
                cellBG.graphics.beginFill(0xf5f5f5,1);
                cellBG.graphics.drawRect(0,0,300,int(st.y + st.height + 10));
                cellBG.graphics.endFill();
                container.addChildAt(cellBG,0); // add under text

                // pre-create Texture of this text for reference
                var bmd:BitmapData = new BitmapData(300,container.height,false,0xFFFFFF);
                bmd.draw(container);
                currentData.texture = Texture.fromBitmapData(bmd);

                currentData.url = dataList[feedIndex].link.text();

                dataProvided.push(currentData);

                // cleaning up
                bmd.dispose();
                while (container.numChildren > 0) { container.removeChildAt(0); }
                container = null;
                tt = null;
                dt = null;
                st = null;
                bmd = null;
            }

            _list.dataProvider = new ListCollection(dataProvided);
            _list.selectedIndex = 0;
        }

        private function _handleXMLError(e:Event):void
        {
            trace("Blog._handleXMLError() -Error loading XML [" + e.target + "]: " + e.type + " (" + e.toString() + ")");

        }
    }
}