ユーザーが冷蔵庫の材料をリストに追加し、リストした材料に基づいて潜在的なレシピをすべて検索できるアプリケーションを構築しています。
次のような非常に単純なスキーマで設定された XML データを使用しています。
<items>
<item category="meat">chicken</item>
<item category="meat">beef</item>
<item category="vegetable">green beans</item>
</items>
私のアプリのスクロール リスト部分は、NetTuts チュートリアル ( http://active.tutsplus.com/tutorials/actionscript/create-a-smooth-rolling-scroller-with-as3/ )に基づいています。XML 属性 (つまり、上記の「category」属性) を使用して、リストをプログラムでフィルター処理できるようにしたいと考えています。
これが私の完全なドキュメント クラスです (すべてが重要である可能性があるため、どの関数を含めて除外するべきかわかりませんでした)。知っておくべき関数dataLoaded()は、XML データを解析して XML に入れる関数TextFieldとdataLoad()、URLLoader オブジェクトをインスタンス化して XML をロードする関数です。私の文書クラスの名前は RecipeMatcher で、そのコンストラクターも同じです。
変数と関数の目的について疑問符が多すぎないように、かなりうまくコメントしたと思います。
package
{
' Imports (All- Unsorted) '
import flash.display.MovieClip;
import flash.events.MouseEvent;
import flash.events.Event;
import flash.net.URLRequest;
import flash.net.URLLoader;
import flash.text.TextFormat;
import flash.text.TextField;
import flash.text.TextFieldAutoSize;
import flash.text.Font;
import flash.display.Shape;
import gs.*;
public class RecipeMatcher extends MovieClip
{
'Variable declaration'
// ------------------- //
'Main Structural elements'
private var _pad:MovieClip;
public var _addIngredient:MovieClip;
private var _container:MovieClip;
'Ingredient Wizard Structural Elements'
public var _ingredientWizard:MovieClip;
private var _CollapsePanelMeat:MovieClip;
private var _CollapsePanelVeg:MovieClip;
private var _CollapsePanelCarbs:MovieClip;
private var _CollapsePanelCuisine:MovieClip;
private var _CollapseMealType:MovieClip;
private var _CollapseOther:MovieClip;
'Data (XML) Elements'
public var loader:URLLoader;
public var data:XML;
public var items:XMLList;
'Positioning of xml data in container - ("Text")'
private var _item:Item;
private var _itemTextField:TextField;
private var _defaultFormat:TextFormat = new TextFormat();
private var _arialRounded:Font = new ArialRounded();
private var _textFieldXPosition:uint = 10;
private var _textFieldYPosition:uint = 13;
private var _textFieldWidth:uint = 540;
private var _textFieldPaddingLeft:uint = 20;
private var _textFieldHeight:uint = 150;
private var _itemPosition:uint = 49;
'newIngredientsWizard positioning'
private var _addNewIngredientsXPosition:uint = 322;
private var _addNewIngredientsYPosition:uint = 500;
'input mask - container'
private var _mask:Shape;
private var _maskWidth:uint = 580;
private var _maskHeight:uint = 540;
private var _paddingTop:uint = 220;
'background for container '
private var _background:Shape;
'scroll speed properties'
private var _maxSpeed:uint = 15;
private var _speed:Number;
'End of variable declarations'
//----------------------------------//
//---------Constructor Function---------//
public function RecipeMatcher()
{
'Constructor for the function RecipeMatcher '
_addIngredient = new addIngredient();
_ingredientWizard = new ingredientDialog();
_pad = new Pad();
addChild(_pad);
_ingredientWizard.visible = false;
_pad.x = stage.stageWidth / 2 - _pad.width / 2;
_pad.y = stage.stageHeight / 2 - _pad.height / 2;
'Event listener for add ingredient button inside of pad movieclip '
_pad.btn_add.addEventListener(MouseEvent.CLICK, addNewIngredient);
_container = new MovieClip();
addChild(_container);
dataLoad();
}
//-- BEGINNING OF LISTENER FUNCTIONS TO FOOD CATEGORY PAGES - PART OF INGREDIENT WIZARD --//
function displayMeat(event:MouseEvent):void {
_ingredientWizard.visible = false;
}
function displayVeg(event:MouseEvent):void {
_ingredientWizard.visible = false;
}
function displayCarbs(event:MouseEvent):void {
_ingredientWizard.visible = false;
}
function displayCuisine(event:MouseEvent):void {
_ingredientWizard.visible = false;
}
function displayMealType(event:MouseEvent):void {
_ingredientWizard.visible = false;
}
function displayOther(event:MouseEvent):void {
_ingredientWizard.visible = false;
}
//-- This function is the accompanying function for the event listener in the constructor that listens for clicks on the ingredient items --//
function itemclicked(event:MouseEvent):void {
_itemTextField = new TextField();
trace(_itemTextField.text);
}
//-- This function makes all of the elements of the scrolling list invisible, whilst the Add New Ingredients Wizard is displayed to the user //
function addNewIngredient(event:MouseEvent):void
{
_pad.visible = false;
_container.visible = false;
trace("screen wipe");
_ingredientWizard = new ingredientDialog();
addChild(_ingredientWizard);
_ingredientWizard.x = stage.stageWidth / 2 - _ingredientWizard.width / 2;
_ingredientWizard.y = stage.stageHeight / 2 - _ingredientWizard.height / 2;
_ingredientWizard.collapse_meat.btn_submit.addEventListener(MouseEvent.CLICK, displayMeat);
_ingredientWizard.collapse_veg.btn_submit.addEventListener(MouseEvent.CLICK, displayVeg);
_ingredientWizard.collapse_carbs.btn_submit.addEventListener(MouseEvent.CLICK, displayCarbs);
_ingredientWizard.collapse_cuisine.btn_submit.addEventListener(MouseEvent.CLICK, displayCuisine);
_ingredientWizard.collapse_mealtype.btn_submit.addEventListener(MouseEvent.CLICK, displayMealType);
_ingredientWizard.collapse_otherdietarypreferences.btn_submit.addEventListener(MouseEvent.CLICK, displayOther);
'Submit all ingredient choices button listener'
_ingredientWizard.btn_submit.addEventListener(MouseEvent.CLICK, submitIngredientChoices);
}
function submitIngredientChoices(event:MouseEvent):void {
trace("submitted ingredients");
}
private function dataLoad():void {
'instantiates URLLoader object'
loader = new URLLoader();
' listens to see if data has fully loaded'
loader.addEventListener(Event.COMPLETE, dataLoaded);
'loads local xml file with URLrequest method'
loader.load(new URLRequest("data.xml"));
}
private function dataLoaded(event:Event):void {
' this holds the loaded xml data '
data = new XML(event.target.data);
'items properties call - add other calls to master properties later on'
items = data.item;
' tracing name of all categories in xml doc'
trace(data.item.@category);
' parsing of each ingredient'
for (var i = 0; i < items.length(); i++) {
// instantiation of mcItem (the stage for each item)
_item = new Item();
// sets 'over' layer to invisible / transparent //
_item.item_btn_over.alpha = 0;
// creates the var itemTextField //
_itemTextField = new TextField();
// _itemTextField visual attributes //
_itemTextField.x = _textFieldXPosition + _textFieldPaddingLeft;
_itemTextField.y = _textFieldYPosition;
_itemTextField.selectable = true;
_itemTextField.wordWrap = true;
_itemTextField.width = _textFieldWidth;
_itemTextField.height = _textFieldHeight;
_itemTextField.embedFonts = true;
_defaultFormat.color = 0x111112;
_defaultFormat.font = _arialRounded.fontName;
_defaultFormat.size = 18;
_itemTextField.defaultTextFormat = _defaultFormat;
_itemTextField.text = items[i].toString();
//adds textfield to displaylist//
_item.addChild(_itemTextField);
//vertical positioning//
_item.y = i * _itemPosition;
_item.buttonMode = true;
_item.mouseChildren = false;
//adds items to container displaylist//
_container.addChild(_item);
_item.addEventListener(MouseEvent.CLICK, itemclicked);
}
' Input Mask'
_mask = new Shape();
_mask.graphics.beginFill(0xFF0000);
_mask.graphics.drawRect(0, 0, _maskWidth, _maskHeight);
_mask.graphics.endFill();
' Positioning of input mask'
// horizontal centering of input mask//
_mask.x = stage.stageWidth / 2 - _container.width / 2;
_mask.y = _paddingTop;
// adds the mask onto the stage//
addChild(_mask);
// assigns the above mask to the container //
_container.mask = _mask;
' Positioning of container with the mask'
// horizontal centering of container //
_container.x = stage.stageWidth / 2 - _container.width / 2;
// vertical position of container //
_container.y = _paddingTop;
'Container background stylings'
_background = new Shape();
_background.graphics.beginFill(0xFFFFFF);
_background.graphics.drawRect(0, 0, _container.width, _container.height);
_background.graphics.endFill();
_container.addChildAt(_background, 0);
'End of container background stylings'
_container.addEventListener(MouseEvent.MOUSE_OVER, movingOver);
_container.addEventListener(MouseEvent.MOUSE_OUT, movingOut);
}
'function: movingOver (MOUSE_OVER) EVENT '
private function movingOver (event:MouseEvent):void {
_container.removeEventListener(MouseEvent.MOUSE_OVER, movingOver);
addEventListener(Event.ENTER_FRAME, enterFrame);
if (event.target is Item)
TweenMax.to(Item(event.target).item_btn_over, .2, {alpha:1});
}
'function: movingOut (MOUSE_OUT) EVENT '
private function movingOut (event:MouseEvent):void {
removeEventListener(Event.ENTER_FRAME, enterFrame);
_container.addEventListener(MouseEvent.MOUSE_OVER, movingOver);
if (event.target is Item)
TweenMax.to(Item(event.target).item_btn_over, .2, {alpha:0});
}
'ENTER_FRAME listener function to gauge scrolling speed based on touch / mouse position + events'
function enterFrame(event:Event):void {
_speed = (_mask.height / 2 - _mask.mouseY) / (_mask.height / 2) * _maxSpeed;
_container.y += _speed;
if (_container.y >= _paddingTop) {
removeEventListener(Event.ENTER_FRAME, enterFrame);
_container.y = _paddingTop;
}
if (_container.y <= _mask.height - _container.height + _paddingTop) {
removeEventListener(Event.ENTER_FRAME, enterFrame);
_container.y = _mask.height - _container.height + _paddingTop;
}
}
}
}
回答者は、必要な機能を強調表示したら、私のコードを扱いやすいサイズに自由に編集してください。
編集: コードでわかるように、インターネットでこのコード スニペットを見つけることができましたが、カテゴリ内のすべてのアイテムではなく、実際のカテゴリ自体のみがリストされています。AS3 については、これ以上先に進むには十分ではありません。
' tracing name of all categories in xml doc'
trace(data.item.@category);