/// <summary>
/// Converts the string representation of a <see cref="SourcedAssetID"/> to an object instance.
/// A return value indicates whether the conversion succeeded.
/// </summary>
/// <param name="manifests">The content manifest registry that contains the currently-loaded content manifests.</param>
/// <param name="s">The string to convert.</param>
/// <param name="v">The converted value.</param>
/// <returns><see langword="true"/> if the conversion succeeded; otherwise, <see langword="false"/>.</returns>
public static Boolean TryParse(ContentManifestRegistry manifests, String s, out SourcedAssetID v)
{
Contract.Require(manifests, nameof(manifests));
Contract.Require(s, nameof(s));
return(TryParseInternal(manifests, s, out v));
}
/// <summary>
/// Converts the string representation of an asset identifier to an instance of the <see cref="SourcedAssetID"/> structure.
/// </summary>
/// <param name="manifests">The content manifest registry that contains the currently-loaded content manifests.</param>
/// <param name="s">A string containing the asset identifier to convert.</param>
/// <param name="value">An instance of the <see cref="SourcedAssetID"/> structure that is equivalent to the specified string.</param>
/// <returns><see langword="true"/> if the string was successfully parsed; otherwise, <see langword="false"/>.</returns>
private static Boolean TryParseInternal(ContentManifestRegistry manifests, String s, out SourcedAssetID value)
{
var parts = s.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (parts.Length > 2)
{
throw new FormatException();
}
// Parse the asset identifier
var assetID = default(AssetID);
var assetIDParsed = false;
if (manifests == null)
{
assetIDParsed = AssetID.TryParse(parts[0], out assetID);
}
else
{
assetIDParsed = AssetID.TryParse(manifests, parts[0], out assetID);
}
if (!assetIDParsed)
{
value = default(SourcedAssetID);
return(false);
}
// Parse the asset source
AssetSource assetSource = AssetSource.Global;
if (parts.Length == 2)
{
if (!Enum.TryParse(parts[1], true, out assetSource))
{
value = default(SourcedAssetID);
return(false);
}
}
value = new SourcedAssetID(assetID, assetSource);
return(true);
}
/// <summary>
/// Loads a dictionary of JSON resource definitions specified by the given asset identifier.
/// </summary>
private T LoadJsonResource <T>(SourcedAssetID id)
{
if (!id.AssetID.IsValid)
{
return(default(T));
}
var definition = view.LoadResource <JObject>(id);
if (definition == null)
{
return(default(T));
}
var settings = new UltravioletJsonSerializerSettings()
{
TypeNameHandling = TypeNameHandling.Auto
};
var serializer = JsonSerializer.CreateDefault(settings);
var resource = definition.ToObject <T>(serializer);
return(resource);
}
/// <summary>
/// Occurs when the value of the <see cref="TextShaders"/> dependency property changes.
/// </summary>
private static void HandleTextShadersChanged(DependencyObject dobj, SourcedAssetID oldValue, SourcedAssetID newValue)
{
var resources = (PresentationFoundationViewResources)dobj;
resources.ReloadTextShaders();
}
/// <inheritdoc/>
public Boolean Equals(SourcedAssetID other)
{
return
(this.assetID.Equals(other.assetID) &&
this.assetSource == other.assetSource);
}
/// <summary>
/// Converts the string representation of a <see cref="SourcedAssetID"/> to an object instance.
/// A return value indicates whether the conversion succeeded.
/// </summary>
/// <param name="s">The string to convert.</param>
/// <param name="style">A set of <see cref="NumberStyles"/> values indicating which elements are present in <paramref name="s"/>.</param>
/// <param name="provider">A format provider that provides culture-specific formatting information.</param>
/// <param name="v">The converted value.</param>
/// <returns><see langword="true"/> if the conversion succeeded; otherwise, <see langword="false"/>.</returns>
public static Boolean TryParse(String s, NumberStyles style, IFormatProvider provider, out SourcedAssetID v)
{
Contract.Require(s, nameof(s));
return(TryParseInternal(null, s, out v));
}
/// <summary>
/// Converts the string representation of a <see cref="SourcedAssetID"/> to an object instance.
/// A return value indicates whether the conversion succeeded.
/// </summary>
/// <param name="s">The string to convert.</param>
/// <param name="v">The converted value.</param>
/// <returns><see langword="true"/> if the conversion succeeded; otherwise, <see langword="false"/>.</returns>
public static Boolean TryParse(String s, out SourcedAssetID v)
{
return(TryParse(s, NumberStyles.Number, NumberFormatInfo.CurrentInfo, out v));
}
