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-rw-r--r--Xamarin.Forms.Platform.WP8/SearchBarRenderer.cs159
1 files changed, 159 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.WP8/SearchBarRenderer.cs b/Xamarin.Forms.Platform.WP8/SearchBarRenderer.cs
new file mode 100644
index 00000000..b27851a8
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+++ b/Xamarin.Forms.Platform.WP8/SearchBarRenderer.cs
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+´╗┐using System.ComponentModel;
+using System.Windows.Input;
+using System.Windows.Media;
+
+namespace Xamarin.Forms.Platform.WinPhone
+{
+ public class SearchBarRenderer : ViewRenderer<SearchBar, FormsPhoneTextBox>
+ {
+ const string DefaultPlaceholder = "Search";
+ Brush _defaultPlaceholderColorBrush;
+
+ Brush _defaultTextColorBrush;
+
+ bool _fontApplied;
+
+ protected override void OnElementChanged(ElementChangedEventArgs<SearchBar> e)
+ {
+ base.OnElementChanged(e);
+
+ var scope = new InputScope();
+ var name = new InputScopeName();
+ name.NameValue = InputScopeNameValue.Search;
+ scope.Names.Add(name);
+
+ var phoneTextBox = new FormsPhoneTextBox { InputScope = scope };
+
+ phoneTextBox.KeyUp += PhoneTextBoxOnKeyUp;
+
+ phoneTextBox.TextChanged += PhoneTextBoxOnTextChanged;
+
+ SetNativeControl(phoneTextBox);
+
+ UpdateText();
+ UpdatePlaceholder();
+ UpdateAlignment();
+ UpdateFont();
+ UpdatePlaceholderColor();
+ UpdateTextColor();
+ }
+
+ protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
+ {
+ base.OnElementPropertyChanged(sender, e);
+
+ if (e.PropertyName == SearchBar.TextProperty.PropertyName)
+ UpdateText();
+ else if (e.PropertyName == SearchBar.PlaceholderProperty.PropertyName)
+ UpdatePlaceholder();
+ else if (e.PropertyName == SearchBar.FontAttributesProperty.PropertyName)
+ UpdateFont();
+ else if (e.PropertyName == SearchBar.FontFamilyProperty.PropertyName)
+ UpdateFont();
+ else if (e.PropertyName == SearchBar.FontSizeProperty.PropertyName)
+ UpdateFont();
+ else if (e.PropertyName == SearchBar.HorizontalTextAlignmentProperty.PropertyName)
+ UpdateAlignment();
+ else if (e.PropertyName == SearchBar.PlaceholderColorProperty.PropertyName)
+ UpdatePlaceholderColor();
+ else if (e.PropertyName == SearchBar.TextColorProperty.PropertyName)
+ UpdateTextColor();
+ }
+
+ protected override void UpdateBackgroundColor()
+ {
+ Control.Background = Element.BackgroundColor == Color.Default ? (Brush)System.Windows.Application.Current.Resources["PhoneTextBoxBrush"] : Element.BackgroundColor.ToBrush();
+ }
+
+ void PhoneTextBoxOnKeyUp(object sender, KeyEventArgs keyEventArgs)
+ {
+ if (keyEventArgs.Key == Key.Enter)
+ Element.OnSearchButtonPressed();
+ }
+
+ void PhoneTextBoxOnTextChanged(object sender, System.Windows.Controls.TextChangedEventArgs textChangedEventArgs)
+ {
+ ((IElementController)Element).SetValueFromRenderer(SearchBar.TextProperty, Control.Text);
+ }
+
+ void UpdateAlignment()
+ {
+ Control.TextAlignment = Element.HorizontalTextAlignment.ToNativeTextAlignment();
+ }
+
+ void UpdateFont()
+ {
+ if (Control == null)
+ return;
+
+ SearchBar searchbar = Element;
+
+ if (searchbar == null)
+ return;
+
+ bool searchbarIsDefault = searchbar.FontFamily == null && searchbar.FontSize == Device.GetNamedSize(NamedSize.Default, typeof(SearchBar), true) && searchbar.FontAttributes == FontAttributes.None;
+
+ if (searchbarIsDefault && !_fontApplied)
+ return;
+
+ if (searchbarIsDefault)
+ {
+ Control.ClearValue(System.Windows.Controls.Control.FontStyleProperty);
+ Control.ClearValue(System.Windows.Controls.Control.FontSizeProperty);
+ Control.ClearValue(System.Windows.Controls.Control.FontFamilyProperty);
+ Control.ClearValue(System.Windows.Controls.Control.FontWeightProperty);
+ Control.ClearValue(System.Windows.Controls.Control.FontStretchProperty);
+ }
+ else
+ Control.ApplyFont(searchbar);
+
+ _fontApplied = true;
+ }
+
+ void UpdatePlaceholder()
+ {
+ Control.Hint = Element.Placeholder ?? DefaultPlaceholder;
+ }
+
+ void UpdatePlaceholderColor()
+ {
+ Color placeholderColor = Element.PlaceholderColor;
+
+ if (placeholderColor.IsDefault)
+ {
+ if (_defaultPlaceholderColorBrush == null)
+ return;
+
+ Control.PlaceholderForegroundBrush = _defaultPlaceholderColorBrush;
+ }
+
+ if (_defaultPlaceholderColorBrush == null)
+ _defaultPlaceholderColorBrush = Control.PlaceholderForegroundBrush;
+
+ Control.PlaceholderForegroundBrush = placeholderColor.ToBrush();
+ }
+
+ void UpdateText()
+ {
+ Control.Text = Element.Text ?? "";
+ }
+
+ void UpdateTextColor()
+ {
+ Color textColor = Element.TextColor;
+
+ if (textColor.IsDefault)
+ {
+ if (_defaultTextColorBrush == null)
+ return;
+
+ Control.Foreground = _defaultTextColorBrush;
+ }
+
+ if (_defaultTextColorBrush == null)
+ _defaultTextColorBrush = Control.Foreground;
+
+ Control.Foreground = textColor.ToBrush();
+ }
+ }
+} \ No newline at end of file