private void GetDirectives(Controls.DotvvmBindableObject control)
{
var directives = (Dictionary <string, string>)control.GetValue(DotvvmView.DirectivesProperty);
// get type directive
string resourceTypeDirectiveValue;
directives.TryGetValue(ParserConstants.ResourceTypeDirective, out resourceTypeDirectiveValue);
ResourceTypeDirectiveValue = (resourceTypeDirectiveValue ?? "").Trim();
// get namespace directive
string resourceNamespaceDirectiveValue;
directives.TryGetValue(ParserConstants.ResourceNamespaceDirective, out resourceNamespaceDirectiveValue);
ResourceNamespaceDirectiveValue = (resourceNamespaceDirectiveValue ?? "").Trim();
}
/// <summary>
/// Evaluates the binding.
/// </summary>
public object Evaluate(Controls.DotvvmBindableObject control, DotvvmProperty property)
{
if (Delegate != null)
{
return(ExecDelegate(control, true));
}
if (!OriginalString.Contains("."))
{
throw new Exception("Invalid resource name! Use Namespace.ResourceType.ResourceKey!");
}
// parse expression
var expressionText = OriginalString.Trim();
var lastDotPosition = expressionText.LastIndexOf(".", StringComparison.Ordinal);
var resourceType = expressionText.Substring(0, lastDotPosition);
var resourceKey = expressionText.Substring(lastDotPosition + 1);
// find the resource manager
var resourceManager = cachedResourceManagers.GetOrAdd(resourceType, GetResourceManager);
// return the value
return(resourceManager.GetString(resourceKey));
}
/// <summary>
/// Evaluates the binding.
/// </summary>
public object Evaluate(Controls.DotvvmBindableObject control, DotvvmProperty property)
{
return(ExecDelegate(control, true));
}
/// <summary>
/// Evaluates the binding.
/// </summary>
public object Evaluate(Controls.DotvvmBindableObject control, DotvvmProperty property)
{
if (Delegate != null)
{
return(ExecDelegate(control, true));
}
// parse expression
string resourceType = "";
// check value
var expressionText = OriginalString?.Trim();
if (string.IsNullOrWhiteSpace(expressionText))
{
throw new Exception("Resource binding contains empty string.");
}
GetDirectives(control);
// check directives combination
if (!string.IsNullOrWhiteSpace(ResourceTypeDirectiveValue) && !string.IsNullOrWhiteSpace(ResourceNamespaceDirectiveValue))
{
throw new Exception("@resourceType and @resourceNamespace directives cannot be used in the same time!");
}
// check type directive
string resourceKey = "";
if (!string.IsNullOrWhiteSpace(ResourceTypeDirectiveValue))
{
if (!ResourceTypeDirectiveValue.Contains(","))
{
throw new Exception($"Assembly of resource type '{expressionText}' was not recognized. Specify make sure the directive value is in format: Assembly, Namespace.ResourceType");
}
if (!ResourceTypeDirectiveValue.Contains("."))
{
throw new Exception($"Resource {expressionText} was not found. Specify make sure the directive value is in format: Assembly, Namespace.ResourceType");
}
if (!expressionText.Contains("."))
{
resourceType = ResourceTypeDirectiveValue;
resourceKey = expressionText;
}
else
{
var lastDotPosition = expressionText.LastIndexOf(".", StringComparison.Ordinal);
resourceType = expressionText.Substring(0, lastDotPosition);
resourceKey = expressionText.Substring(lastDotPosition + 1);
}
}
else if (!string.IsNullOrWhiteSpace(ResourceNamespaceDirectiveValue))
{
if (ResourceNamespaceDirectiveValue.Contains(","))
{
throw new Exception($"@resourceNamespace {ResourceNamespaceDirectiveValue} contains unexpected charachter ','");
}
if (expressionText.Contains("."))
{
var lastDotPosition = expressionText.LastIndexOf(".", StringComparison.Ordinal);
resourceType = expressionText.Substring(0, lastDotPosition);
resourceKey = expressionText.Substring(lastDotPosition + 1);
}
else
{
throw new Exception($"Resource '{expressionText}' does not specify resource class or resource key. Make sure that format of expression is: OptionalNamespace.ResourceType.ResourceKey");
}
}
else
{
if (expressionText.Contains("."))
{
var lastDotPosition = expressionText.LastIndexOf(".", StringComparison.Ordinal);
resourceType = expressionText.Substring(0, lastDotPosition);
resourceKey = expressionText.Substring(lastDotPosition + 1);
}
else
{
throw new Exception($"Resource '{expressionText}' does not specify resource class or resource key. Make sure that format of expression is: Namespace.ResourceType.ResourceKey");
}
}
// find the resource manager
var resourceManager = cachedResourceManagers.GetOrAdd(resourceType, GetResourceManager);
if (resourceManager == null)
{
resourceManager = cachedResourceManagers.GetOrAdd(ResourceNamespaceDirectiveValue + "." + resourceType, GetResourceManager);
}
if (resourceManager == null)
{
throw new Exception($"The resource file '{resourceType}' was not found! Make sure that your resource file has Access Modifier set to Public or Internal.");
}
// return the value
var value = resourceManager.GetString(resourceKey);
if (value == null)
{
throw new Exception($"Resource '{expressionText}' was not found.");
}
return(value);
}
