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using System;
using Windows.UI.Text;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
#if WINDOWS_UWP
namespace Xamarin.Forms.Platform.UWP
#else
namespace Xamarin.Forms.Platform.WinRT
#endif
{
internal sealed class WindowsResourcesProvider : ISystemResourcesProvider
{
public IResourceDictionary GetSystemResources()
{
Windows.UI.Xaml.ResourceDictionary windowsResources = Windows.UI.Xaml.Application.Current.Resources;
var resources = new ResourceDictionary();
resources[Device.Styles.TitleStyleKey] = GetStyle("HeaderTextBlockStyle");
resources[Device.Styles.SubtitleStyleKey] = GetStyle("SubheaderTextBlockStyle");
resources[Device.Styles.BodyStyleKey] = GetStyle("BodyTextBlockStyle");
resources[Device.Styles.CaptionStyleKey] = GetStyle("CaptionTextBlockStyle");
#if WINDOWS_UWP
resources[Device.Styles.ListItemTextStyleKey] = GetStyle("BaseTextBlockStyle");
#else
resources[Device.Styles.ListItemTextStyleKey] = GetStyle("TitleTextBlockStyle");
#endif
resources[Device.Styles.ListItemDetailTextStyleKey] = GetStyle("BodyTextBlockStyle");
return resources;
}
Style GetStyle(object nativeKey)
{
var style = (Windows.UI.Xaml.Style)Windows.UI.Xaml.Application.Current.Resources[nativeKey];
var formsStyle = new Style(typeof(Label));
foreach (SetterBase b in style.Setters)
{
var setter = b as Windows.UI.Xaml.Setter;
if (setter == null)
continue;
// TODO: Need to implement a stealth pass-through for things we don't support
try
{
if (setter.Property == TextBlock.FontSizeProperty)
formsStyle.Setters.Add(Label.FontSizeProperty, setter.Value);
else if (setter.Property == TextBlock.FontFamilyProperty)
formsStyle.Setters.Add(Label.FontFamilyProperty, setter.Value);
else if (setter.Property == TextBlock.FontWeightProperty)
formsStyle.Setters.Add(Label.FontAttributesProperty, ToAttributes(Convert.ToUInt16(setter.Value)));
else if (setter.Property == TextBlock.TextWrappingProperty)
formsStyle.Setters.Add(Label.LineBreakModeProperty, ToLineBreakMode((TextWrapping)setter.Value));
}
catch (NotImplementedException)
{
// see https://bugzilla.xamarin.com/show_bug.cgi?id=33135
// WinRT implementation of Windows.UI.Xaml.Setter.get_Value is not implemented.
}
}
return formsStyle;
}
static FontAttributes ToAttributes(ushort uweight)
{
if (uweight == FontWeights.Bold.Weight || uweight == FontWeights.SemiBold.Weight || uweight == FontWeights.ExtraBold.Weight)
return FontAttributes.Bold;
return FontAttributes.None;
}
static LineBreakMode ToLineBreakMode(TextWrapping value)
{
switch (value)
{
case TextWrapping.Wrap:
return LineBreakMode.CharacterWrap;
case TextWrapping.WrapWholeWords:
return LineBreakMode.WordWrap;
default:
case TextWrapping.NoWrap:
return LineBreakMode.NoWrap;
}
}
}
}
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