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using System;
using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using WButton = System.Windows.Controls.Button;
using WImage = System.Windows.Controls.Image;
using WThickness = System.Windows.Thickness;
namespace Xamarin.Forms.Platform.WinPhone
{
public class ButtonRenderer : ViewRenderer<Button, WButton>
{
bool _fontApplied;
protected override void OnElementChanged(ElementChangedEventArgs<Button> e)
{
base.OnElementChanged(e);
var button = new WButton();
button.Click += HandleButtonClick;
SetNativeControl(button);
UpdateContent();
if (Element.BackgroundColor != Color.Default)
UpdateBackground();
if (Element.TextColor != Color.Default)
UpdateTextColor();
if (Element.BorderColor != Color.Default)
UpdateBorderColor();
if (Element.BorderWidth != 0)
UpdateBorderWidth();
UpdateFont();
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == Button.TextProperty.PropertyName || e.PropertyName == Button.ImageProperty.PropertyName)
UpdateContent();
else if (e.PropertyName == VisualElement.BackgroundColorProperty.PropertyName)
UpdateBackground();
else if (e.PropertyName == Button.TextColorProperty.PropertyName)
UpdateTextColor();
else if (e.PropertyName == Button.FontProperty.PropertyName)
UpdateFont();
else if (e.PropertyName == Button.BorderColorProperty.PropertyName)
UpdateBorderColor();
else if (e.PropertyName == Button.BorderWidthProperty.PropertyName)
UpdateBorderWidth();
}
void HandleButtonClick(object sender, RoutedEventArgs e)
{
Button buttonView = Element;
if (buttonView != null)
((IButtonController)buttonView).SendClicked();
}
void UpdateBackground()
{
Control.Background = Element.BackgroundColor != Color.Default ? Element.BackgroundColor.ToBrush() : (Brush)System.Windows.Application.Current.Resources["PhoneBackgroundBrush"];
}
void UpdateBorderColor()
{
Control.BorderBrush = Element.BorderColor != Color.Default ? Element.BorderColor.ToBrush() : (Brush)System.Windows.Application.Current.Resources["PhoneForegroundBrush"];
}
void UpdateBorderWidth()
{
Control.BorderThickness = Element.BorderWidth == 0d ? new WThickness(3) : new WThickness(Element.BorderWidth);
}
void UpdateContent()
{
if (Element.Image != null)
{
Control.Content = new StackPanel
{
Orientation = Orientation.Horizontal,
Children =
{
new WImage { Source = new BitmapImage(new Uri("/" + Element.Image.File, UriKind.Relative)), Width = 30, Height = 30, Margin = new WThickness(0, 0, 20, 0) },
new TextBlock { Text = Element.Text }
}
};
}
else
Control.Content = Element.Text;
}
void UpdateFont()
{
if (Control == null || Element == null)
return;
if (Element.Font == Font.Default && !_fontApplied)
return;
Font fontToApply = Element.Font == Font.Default ? Font.SystemFontOfSize(NamedSize.Medium) : Element.Font;
Control.ApplyFont(fontToApply);
_fontApplied = true;
}
void UpdateTextColor()
{
Control.Foreground = Element.TextColor != Color.Default ? Element.TextColor.ToBrush() : (Brush)System.Windows.Application.Current.Resources["PhoneForegroundBrush"];
}
}
}
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