110 строки
3.2 KiB
C#
110 строки
3.2 KiB
C#
using System.ComponentModel;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Media;
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namespace Xamarin.Forms.Platform.WinPhone
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{
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public class EditorRenderer : ViewRenderer<Editor, TextBox>
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{
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bool _fontApplied;
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IEditorController ElementController => Element;
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protected override void OnElementChanged(ElementChangedEventArgs<Editor> e)
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{
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base.OnElementChanged(e);
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var textBox = new TextBox { VerticalScrollBarVisibility = ScrollBarVisibility.Visible, TextWrapping = TextWrapping.Wrap, AcceptsReturn = true };
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SetNativeControl(textBox);
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UpdateText();
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UpdateInputScope();
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UpdateTextColor();
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Control.LostFocus += (sender, args) => ElementController.SendCompleted();
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textBox.TextChanged += TextBoxOnTextChanged;
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}
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protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
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{
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base.OnElementPropertyChanged(sender, e);
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if (e.PropertyName == Editor.TextProperty.PropertyName)
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UpdateText();
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else if (e.PropertyName == InputView.KeyboardProperty.PropertyName)
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UpdateInputScope();
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else if (e.PropertyName == Editor.TextColorProperty.PropertyName)
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UpdateTextColor();
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else if (e.PropertyName == Editor.FontAttributesProperty.PropertyName)
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UpdateFont();
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else if (e.PropertyName == Editor.FontFamilyProperty.PropertyName)
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UpdateFont();
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else if (e.PropertyName == Editor.FontSizeProperty.PropertyName)
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UpdateFont();
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}
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protected override void UpdateBackgroundColor()
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{
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Control.Background = Element.BackgroundColor == Color.Default ? (Brush)System.Windows.Application.Current.Resources["PhoneTextBoxBrush"] : Element.BackgroundColor.ToBrush();
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}
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void TextBoxOnTextChanged(object sender, System.Windows.Controls.TextChangedEventArgs textChangedEventArgs)
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{
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((IElementController)Element).SetValueFromRenderer(Editor.TextProperty, Control.Text);
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}
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void UpdateFont()
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{
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if (Control == null)
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return;
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Editor editor = Element;
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bool editorIsDefault = editor.FontFamily == null && editor.FontSize == Device.GetNamedSize(NamedSize.Default, typeof(Editor), true) && editor.FontAttributes == FontAttributes.None;
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if (editor == null || (editorIsDefault && !_fontApplied))
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return;
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if (editorIsDefault)
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{
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Control.ClearValue(System.Windows.Controls.Control.FontStyleProperty);
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Control.ClearValue(System.Windows.Controls.Control.FontSizeProperty);
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Control.ClearValue(System.Windows.Controls.Control.FontFamilyProperty);
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Control.ClearValue(System.Windows.Controls.Control.FontWeightProperty);
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Control.ClearValue(System.Windows.Controls.Control.FontStretchProperty);
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}
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else
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Control.ApplyFont(editor);
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_fontApplied = true;
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}
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void UpdateInputScope()
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{
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Control.InputScope = Element.Keyboard.ToInputScope();
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}
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void UpdateText()
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{
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string newText = Element.Text ?? "";
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if (Control.Text == newText)
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return;
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Control.Text = newText;
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Control.SelectionStart = Control.Text.Length;
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}
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void UpdateTextColor()
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{
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Color textColor = Element.TextColor;
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if (textColor.IsDefault || !Element.IsEnabled)
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Control.ClearValue(System.Windows.Controls.Control.ForegroundProperty);
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else
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Control.Foreground = textColor.ToBrush();
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}
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}
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} |