1 files changed, 157 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.WinRT.Phone/SearchBox.xaml.cs b/Xamarin.Forms.Platform.WinRT.Phone/SearchBox.xaml.cs
new file mode 100644
index 00000000..4cc8ac1c
--- /dev/null
+++ b/Xamarin.Forms.Platform.WinRT.Phone/SearchBox.xaml.cs
@@ -0,0 +1,157 @@
+using System;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+
+namespace Xamarin.Forms.Platform.WinRT
+{
+	public class SearchBoxQuerySubmittedEventArgs
+		: EventArgs
+	{
+	}
+
+	public class SearchBoxQueryChangedEventArgs
+		: EventArgs
+	{
+		public SearchBoxQueryChangedEventArgs (string query)
+		{
+			QueryText = query;
+		}
+
+		public string QueryText
+		{
+			get;
+			private set;
+		}
+	}
+
+	public delegate void QueryChangedEventHandler (SearchBox search, SearchBoxQueryChangedEventArgs args);
+	public delegate void QuerySubmittedEventHandler (SearchBox search, SearchBoxQuerySubmittedEventArgs args);
+
+	public sealed partial class SearchBox
+	{
+		public SearchBox ()
+		{
+			InitializeComponent ();
+
+			IsEnabledChanged += OnIsEnabledChanged;
+		}
+
+		public event QuerySubmittedEventHandler QuerySubmitted;
+		public event QueryChangedEventHandler QueryChanged;
+
+		public static readonly DependencyProperty QueryTextProperty = DependencyProperty.Register (
+			"QueryText", typeof(string), typeof(SearchBox), new PropertyMetadata (null, OnQueryTextChanged));
+
+		public string QueryText
+		{
+			get { return (string)GetValue (QueryTextProperty); }
+			set { SetValue (QueryTextProperty, value); }
+		}
+
+		public static readonly DependencyProperty PlaceholderTextProperty = DependencyProperty.Register (
+			"PlaceholderText", typeof(string), typeof(SearchBox), new PropertyMetadata (null, OnPlaceholderChanged));
+
+		public string PlaceholderText
+		{
+			get { return (string)GetValue (PlaceholderTextProperty); }
+			set { SetValue (PlaceholderTextProperty, value); }
+		}
+
+		public static readonly DependencyProperty HorizontalTextAlignmentProperty = DependencyProperty.Register (
+			"HorizontalTextAlignment", typeof(string), typeof(SearchBox), new PropertyMetadata (null, OnAlignmentChanged));
+
+		public TextAlignment HorizontalTextAlignment
+		{
+			get { return (TextAlignment)GetValue (HorizontalTextAlignmentProperty); }
+			set { SetValue (HorizontalTextAlignmentProperty, value); }
+		}
+
+		protected override void OnApplyTemplate ()
+		{
+			base.OnApplyTemplate ();
+
+			GoToNormal ();
+
+			_searchTextBox = (TextBox)GetTemplateChild ("SearchTextBox");
+
+			((Windows.UI.Xaml.Controls.Button) GetTemplateChild ("SearchButton")).Click += OnSearchButtonClicked;
+
+			UpdatePlaceholder ();
+			UpdateAlignment ();
+		}
+
+		protected override void OnGotFocus (RoutedEventArgs e)
+		{
+			base.OnGotFocus (e);
+
+			VisualStateManager.GoToState (this, "Focused", true);
+		}
+
+		protected override void OnLostFocus (RoutedEventArgs e)
+		{
+			base.OnLostFocus (e);
+
+			GoToNormal ();
+		}
+
+		void OnSearchButtonClicked (object sender, RoutedEventArgs e)
+		{
+			var querySubmitted = QuerySubmitted;
+			if (querySubmitted != null)
+				querySubmitted (this, new SearchBoxQuerySubmittedEventArgs());
+		}
+
+		TextBox _searchTextBox;
+
+		void GoToNormal ()
+		{
+			VisualStateManager.GoToState (this, (IsEnabled) ? "Normal" : "Disabled", false);
+		}
+
+		void UpdatePlaceholder ()
+		{
+			if (_searchTextBox == null)
+				return;
+
+			_searchTextBox.PlaceholderText = PlaceholderText;
+		}
+
+		void OnIsEnabledChanged (object sender, DependencyPropertyChangedEventArgs e)
+		{
+			string state = "Normal";
+			if (!(bool) e.NewValue)
+				state = "Disabled";
+			else if (FocusState != FocusState.Unfocused)
+				state = "Focused";
+
+			VisualStateManager.GoToState (this, state, true);
+		}
+
+		static void OnQueryTextChanged (DependencyObject d, DependencyPropertyChangedEventArgs e)
+		{
+			var search = (SearchBox) d;
+			var changed = search.QueryChanged;
+			if (changed != null)
+				changed (search, new SearchBoxQueryChangedEventArgs ((string) e.NewValue));
+		}
+
+		static void OnPlaceholderChanged (DependencyObject d, DependencyPropertyChangedEventArgs e)
+		{
+			((SearchBox) d).UpdatePlaceholder ();
+		}
+
+		static void OnAlignmentChanged (DependencyObject d, DependencyPropertyChangedEventArgs e)
+		{
+			((SearchBox) d).UpdateAlignment ();
+		}
+
+		void UpdateAlignment ()
+		{
+			if (_searchTextBox == null) {
+				return;
+			}
+
+			_searchTextBox.TextAlignment = HorizontalTextAlignment.ToNativeTextAlignment();
+		}
+	}
+}