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Assets/Mapbox/Examples/Scripts/ReverseGeocodeUserInput.cs

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+//-----------------------------------------------------------------------
+// <copyright file="ReverseGeocodeUserInput.cs" company="Mapbox">
+//     Copyright (c) 2016 Mapbox. All rights reserved.
+// </copyright>
+//-----------------------------------------------------------------------
+namespace Mapbox.Examples
+{
+    using Mapbox.Unity;
+    using System;
+    using UnityEngine;
+    using UnityEngine.UI;
+    using Mapbox.Geocoding;
+    using Mapbox.Utils;
+	using Mapbox.Unity.Utilities;
+
+    /// <summary>
+    /// Peforms a reverse geocoder request (search by latitude, longitude) whenever the InputField on *this*
+    /// gameObject is finished with an edit. 
+    /// Expects input in the form of "latitude, longitude"
+    /// </summary>
+    [RequireComponent(typeof(InputField))]
+	public class ReverseGeocodeUserInput : MonoBehaviour
+	{
+		InputField _inputField;
+
+		ReverseGeocodeResource _resource;
+
+		Geocoder _geocoder;
+
+		Vector2d _coordinate;
+
+		bool _hasResponse;
+		public bool HasResponse
+		{
+			get
+			{
+				return _hasResponse;
+			}
+		}
+
+		public ReverseGeocodeResponse Response { get; private set;}
+
+		public event EventHandler<EventArgs> OnGeocoderResponse;
+
+		void Awake()
+		{
+			_inputField = GetComponent<InputField>();
+			_inputField.onEndEdit.AddListener(HandleUserInput);
+			_resource = new ReverseGeocodeResource(_coordinate);
+		}
+
+		void Start()
+		{
+            _geocoder = MapboxAccess.Instance.Geocoder;
+		}
+
+		/// <summary>
+		/// An edit was made to the InputField.
+		/// Unity will send the string from _inputField.
+		/// Make geocoder query.
+		/// </summary>
+		/// <param name="searchString">Search string.</param>
+		void HandleUserInput(string searchString)
+		{
+			_hasResponse = false;
+			if (!string.IsNullOrEmpty(searchString))
+			{
+				_coordinate = Conversions.StringToLatLon(searchString);
+				_resource.Query = _coordinate;
+				_geocoder.Geocode(_resource, HandleGeocoderResponse);
+			}
+		}
+
+		/// <summary>
+		/// Handles the geocoder response by updating coordinates and notifying observers.
+		/// </summary>
+		/// <param name="res">Res.</param>
+		void HandleGeocoderResponse(ReverseGeocodeResponse res)
+		{
+			_hasResponse = true;
+			Response = res;
+			if (OnGeocoderResponse != null)
+			{
+				OnGeocoderResponse(this, EventArgs.Empty);
+			}
+		}
+	}
+}