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path: root/Xamarin.Forms.Platform.WinRT/EditorRenderer.cs
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Diffstat (limited to 'Xamarin.Forms.Platform.WinRT/EditorRenderer.cs')
-rw-r--r--Xamarin.Forms.Platform.WinRT/EditorRenderer.cs155
1 files changed, 155 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.WinRT/EditorRenderer.cs b/Xamarin.Forms.Platform.WinRT/EditorRenderer.cs
new file mode 100644
index 00000000..d6236871
--- /dev/null
+++ b/Xamarin.Forms.Platform.WinRT/EditorRenderer.cs
@@ -0,0 +1,155 @@
+´╗┐using System.ComponentModel;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+
+#if WINDOWS_UWP
+
+namespace Xamarin.Forms.Platform.UWP
+#else
+
+namespace Xamarin.Forms.Platform.WinRT
+#endif
+{
+ public class EditorRenderer : ViewRenderer<Editor, TextBox>
+ {
+ bool _fontApplied;
+
+ protected override void OnElementChanged(ElementChangedEventArgs<Editor> e)
+ {
+ if (e.NewElement != null)
+ {
+ if (Control == null)
+ {
+ var textBox = new TextBox { AcceptsReturn = true, TextWrapping = TextWrapping.Wrap };
+
+ textBox.TextChanged += OnNativeTextChanged;
+ textBox.LostFocus += OnLostFocus;
+
+ SetNativeControl(textBox);
+ }
+
+ UpdateText();
+ UpdateInputScope();
+ UpdateTextColor();
+ UpdateFont();
+ }
+
+ base.OnElementChanged(e);
+ }
+
+ protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
+ {
+ if (e.PropertyName == Editor.TextColorProperty.PropertyName)
+ {
+ UpdateTextColor();
+ }
+ else if (e.PropertyName == Editor.FontAttributesProperty.PropertyName)
+ {
+ UpdateFont();
+ }
+ else if (e.PropertyName == Editor.FontFamilyProperty.PropertyName)
+ {
+ UpdateFont();
+ }
+ else if (e.PropertyName == Editor.FontSizeProperty.PropertyName)
+ {
+ UpdateFont();
+ }
+ else if (e.PropertyName == Editor.TextProperty.PropertyName)
+ {
+ UpdateText();
+ }
+
+ base.OnElementPropertyChanged(sender, e);
+ }
+
+ void OnLostFocus(object sender, RoutedEventArgs e)
+ {
+ Element?.SendCompleted();
+ }
+
+ void OnNativeTextChanged(object sender, Windows.UI.Xaml.Controls.TextChangedEventArgs args)
+ {
+ Element?.SetValueCore(Editor.TextProperty, Control.Text);
+ }
+
+ void UpdateFont()
+ {
+ if (Control == null)
+ return;
+
+ Editor editor = Element;
+
+ if (editor == null)
+ return;
+
+ bool editorIsDefault = editor.FontFamily == null && editor.FontSize == Device.GetNamedSize(NamedSize.Default, typeof(Editor), true) && editor.FontAttributes == FontAttributes.None;
+
+ if (editorIsDefault && !_fontApplied)
+ return;
+
+ if (editorIsDefault)
+ {
+ // ReSharper disable AccessToStaticMemberViaDerivedType
+ // Resharper wants to simplify 'TextBox' to 'Control', but then it'll conflict with the property 'Control'
+ Control.ClearValue(TextBox.FontStyleProperty);
+ Control.ClearValue(TextBox.FontSizeProperty);
+ Control.ClearValue(TextBox.FontFamilyProperty);
+ Control.ClearValue(TextBox.FontWeightProperty);
+ Control.ClearValue(TextBox.FontStretchProperty);
+ // ReSharper restore AccessToStaticMemberViaDerivedType
+ }
+ else
+ {
+ Control.ApplyFont(editor);
+ }
+
+ _fontApplied = true;
+ }
+
+ void UpdateInputScope()
+ {
+ var custom = Element.Keyboard as CustomKeyboard;
+ if (custom != null)
+ {
+ Control.IsTextPredictionEnabled = (custom.Flags & KeyboardFlags.Suggestions) != 0;
+ Control.IsSpellCheckEnabled = (custom.Flags & KeyboardFlags.Spellcheck) != 0;
+ }
+ else
+ {
+ Control.ClearValue(TextBox.IsTextPredictionEnabledProperty);
+ Control.ClearValue(TextBox.IsSpellCheckEnabledProperty);
+ }
+
+ Control.InputScope = Element.Keyboard.ToInputScope();
+ }
+
+ void UpdateText()
+ {
+ string newText = Element.Text ?? "";
+
+ if (Control.Text == newText)
+ {
+ return;
+ }
+
+ Control.Text = newText;
+ Control.SelectionStart = Control.Text.Length;
+ }
+
+ void UpdateTextColor()
+ {
+ Color textColor = Element.TextColor;
+
+ if (textColor.IsDefault || !Element.IsEnabled)
+ {
+ // ReSharper disable once AccessToStaticMemberViaDerivedType
+ Control.ClearValue(TextBox.ForegroundProperty);
+ }
+ else
+ {
+ Control.Foreground = textColor.ToBrush();
+ }
+ }
+ }
+} \ No newline at end of file