SuggestText

gistfile1.cs

using System;
using System.Collections.Generic;
using UnityEngine;
using UniRx;
using UnityEngine.UI;
using System.Linq;
using System.Xml.Linq;
namespace UniRxSamples
{
    public class SuggestText : MonoBehaviour
    {
        [SerializeField]
        private InputField _inputField;
        [SerializeField]
        private Text _text;

        private readonly string _apiUrlFormat 
            = "http://www.google.com/complete/search?hl=ja&output=toolbar&q={0}";

        private void Start()
        {
            _inputField
                .onValueChange
                .AsObservable()
                .Throttle(TimeSpan.FromMilliseconds(200))
                .SelectMany(word => ObservableWWW.Get(string.Format(_apiUrlFormat, WWW.EscapeURL(word))))
                .Select(XMLResultToStrings)
                .Where(suggests => suggests.Any())
                .Subscribe(suggestResults =>
                {
                    //結果を改行区切りで表示
                    _text.text = suggestResults.Aggregate((s, n) => s + n + System.Environment.NewLine);
                });
        }

        /// <summary>
        /// GoogleSuggestAPIのXMLからSuggest文字列のシーケンスに変換する
        /// </summary>
        /// <param name="xmlString">対象のXML文字列</param>
        /// <returns>Suggest結果の文字列シーケンス</returns>
        private IEnumerable<string> XMLResultToStrings(string xmlString)
        {
            var xml = XDocument.Parse(xmlString);
            return xml
                    .Descendants("CompleteSuggestion")
                    .Elements(XName.Get("suggestion"))
                    .Attributes("data")
                    .Select(x => x.Value);
        } 
    }
}