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-rw-r--r--Xamarin.Forms.Platform.UAP/SearchBarRenderer.cs208
1 files changed, 208 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.UAP/SearchBarRenderer.cs b/Xamarin.Forms.Platform.UAP/SearchBarRenderer.cs
new file mode 100644
index 00000000..6ec13e1b
--- /dev/null
+++ b/Xamarin.Forms.Platform.UAP/SearchBarRenderer.cs
@@ -0,0 +1,208 @@
+´╗┐using System.ComponentModel;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Media;
+
+namespace Xamarin.Forms.Platform.UWP
+{
+ public class SearchBarRenderer : ViewRenderer<SearchBar, AutoSuggestBox>
+ {
+ Brush _defaultPlaceholderColorBrush;
+ Brush _defaultPlaceholderColorFocusBrush;
+ Brush _defaultTextColorBrush;
+ Brush _defaultTextColorFocusBrush;
+
+ bool _fontApplied;
+
+ FormsTextBox _queryTextBox;
+
+ protected override void OnElementChanged(ElementChangedEventArgs<SearchBar> e)
+ {
+ if (e.NewElement != null)
+ {
+ if (Control == null)
+ {
+ SetNativeControl(new AutoSuggestBox { QueryIcon = new SymbolIcon(Symbol.Find) });
+ Control.QuerySubmitted += OnQuerySubmitted;
+ Control.TextChanged += OnTextChanged;
+ Control.Loaded += OnControlLoaded;
+ }
+
+ UpdateText();
+ UpdatePlaceholder();
+ UpdateCancelButtonColor();
+ UpdateAlignment();
+ UpdateFont();
+ UpdateTextColor();
+ UpdatePlaceholderColor();
+ }
+
+ base.OnElementChanged(e);
+ }
+
+ 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.CancelButtonColorProperty.PropertyName)
+ UpdateCancelButtonColor();
+ else if (e.PropertyName == SearchBar.HorizontalTextAlignmentProperty.PropertyName)
+ UpdateAlignment();
+ 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.TextColorProperty.PropertyName)
+ UpdateTextColor();
+ else if (e.PropertyName == SearchBar.PlaceholderColorProperty.PropertyName)
+ UpdatePlaceholderColor();
+ }
+
+ void OnControlLoaded(object sender, RoutedEventArgs routedEventArgs)
+ {
+ _queryTextBox = Control.GetFirstDescendant<FormsTextBox>();
+
+ UpdateAlignment();
+ UpdateTextColor();
+ UpdatePlaceholderColor();
+ }
+
+ void OnQuerySubmitted(AutoSuggestBox sender, AutoSuggestBoxQuerySubmittedEventArgs e)
+ {
+ Element.OnSearchButtonPressed();
+ }
+
+ void OnTextChanged(AutoSuggestBox sender, AutoSuggestBoxTextChangedEventArgs e)
+ {
+ if (e.Reason == AutoSuggestionBoxTextChangeReason.ProgrammaticChange)
+ return;
+
+ ((IElementController)Element).SetValueFromRenderer(SearchBar.TextProperty, sender.Text);
+ }
+
+ void UpdateAlignment()
+ {
+ if (_queryTextBox == null)
+ return;
+
+ _queryTextBox.TextAlignment = Element.HorizontalTextAlignment.ToNativeTextAlignment();
+ }
+
+ void UpdateCancelButtonColor()
+ {
+ var foregroundBrush = Windows.UI.Xaml.Application.Current.Resources["FormsCancelForegroundBrush"] as SolidColorBrush;
+ var backgroundBrush = Windows.UI.Xaml.Application.Current.Resources["FormsCancelBackgroundBrush"] as SolidColorBrush;
+
+ Color cancelColor = Element.CancelButtonColor;
+
+ if (cancelColor.IsDefault)
+ {
+ backgroundBrush.Color = (Windows.UI.Xaml.Application.Current.Resources["TextBoxButtonBackgroundThemeBrush"] as SolidColorBrush).Color;
+ foregroundBrush.Color = (Windows.UI.Xaml.Application.Current.Resources["SystemControlBackgroundChromeBlackMediumBrush"] as SolidColorBrush).Color;
+ }
+ else
+ {
+ Windows.UI.Color newColor = cancelColor.ToWindowsColor();
+ backgroundBrush.Color = newColor;
+ foregroundBrush.Color = newColor.GetIdealForegroundForBackgroundColor();
+ }
+ }
+
+ 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(Windows.UI.Xaml.Controls.Control.FontStyleProperty);
+ Control.ClearValue(Windows.UI.Xaml.Controls.Control.FontSizeProperty);
+ Control.ClearValue(Windows.UI.Xaml.Controls.Control.FontFamilyProperty);
+ Control.ClearValue(Windows.UI.Xaml.Controls.Control.FontWeightProperty);
+ Control.ClearValue(Windows.UI.Xaml.Controls.Control.FontStretchProperty);
+ }
+ else
+ Control.ApplyFont(searchBar);
+
+ _fontApplied = true;
+ }
+
+ void UpdatePlaceholder()
+ {
+ Control.PlaceholderText = Element.Placeholder ?? string.Empty;
+ }
+
+ void UpdatePlaceholderColor()
+ {
+ if (_queryTextBox == null)
+ return;
+
+ Color placeholderColor = Element.PlaceholderColor;
+
+ if (placeholderColor.IsDefault)
+ {
+ if (_defaultPlaceholderColorBrush == null)
+ return;
+
+ _queryTextBox.PlaceholderForegroundBrush = _defaultPlaceholderColorBrush;
+ _queryTextBox.PlaceholderForegroundBrush = _defaultPlaceholderColorFocusBrush;
+ }
+
+ if (_defaultPlaceholderColorBrush == null)
+ {
+ _defaultPlaceholderColorBrush = _queryTextBox.PlaceholderForegroundBrush;
+ _defaultPlaceholderColorFocusBrush = _queryTextBox.PlaceholderForegroundFocusBrush;
+ }
+
+ _queryTextBox.PlaceholderForegroundBrush = placeholderColor.ToBrush();
+ _queryTextBox.PlaceholderForegroundFocusBrush = placeholderColor.ToBrush();
+ }
+
+ void UpdateText()
+ {
+ Control.Text = Element.Text ?? string.Empty;
+ }
+
+ void UpdateTextColor()
+ {
+ if (_queryTextBox == null)
+ return;
+
+ Color textColor = Element.TextColor;
+
+ if (textColor.IsDefault)
+ {
+ if (_defaultTextColorBrush == null)
+ return;
+
+ _queryTextBox.Foreground = _defaultTextColorBrush;
+ _queryTextBox.ForegroundFocusBrush = _defaultTextColorFocusBrush;
+ }
+
+ if (_defaultTextColorBrush == null)
+ {
+ _defaultTextColorBrush = _queryTextBox.Foreground;
+ _defaultTextColorFocusBrush = _queryTextBox.ForegroundFocusBrush;
+ }
+
+ _queryTextBox.Foreground = textColor.ToBrush();
+ _queryTextBox.ForegroundFocusBrush = textColor.ToBrush();
+ }
+ }
+} \ No newline at end of file