public override object ProvideValue(IServiceProvider serviceProvider)
{
if (this.Key == null && this.KeyBinding == null)
throw new ArgumentException("Either Key or KeyBinding must be set");
if (this.Key != null && this.KeyBinding != null)
throw new ArgumentException("Either Key or KeyBinding must be set, but not both");
if (this.ValueBinding != null && this.ValueBindings != null)
throw new ArgumentException("ValueBinding and ValueBindings may not be set at the same time");
// If we've got no bindings, return a string. If we've got 1 binding, return it. If we've got 2 bindings,
// return a new MultiBinding.
// Unfortunately there's no nice way to generalise this...
if (this.KeyBinding == null && this.ValueBinding == null && this.ValueBindings == null)
{
// Just returning a string!
return String.Format(this.StringFormat ?? "{0}", Localizer.Translate(this.Key));
}
var converter = new LocalizeConverter();
converter.StringFormat = this.StringFormat;
// Single binding case
if (this.KeyBinding != null && this.ValueBinding == null && this.ValueBindings == null)
{
// Don't set the key, so it'll assume the binding is the key
converter.Converter = this.KeyBinding.Converter;
this.KeyBinding.Converter = converter;
return this.KeyBinding.ProvideValue(serviceProvider);
}
if (this.KeyBinding == null && this.ValueBinding != null && this.ValueBindings == null)
{
// Set the key, it'll interpret the binding as the value
converter.Key = this.Key;
converter.Converter = this.ValueBinding.Converter;
this.ValueBinding.Converter = converter;
return this.ValueBinding.ProvideValue(serviceProvider);
}
if (this.KeyBinding == null && this.ValueBinding == null && this.ValueBindings != null)
{
converter.Key = this.Key;
// No converter allowed here
this.ValueBindings.Converter = converter;
return this.ValueBindings.ProvideValue(serviceProvider);
}
MultiBinding multiBinding;
// OK, multibinding cases
// If this.ValueBindings is set, we'll hijack that
// Otherwise, we'll create our own
if (this.ValueBindings != null)
{
// Not setting converter.Converter - no support yet
multiBinding = this.ValueBindings;
}
else // this.ValueBinding != null, according to preconditions
{
multiBinding = new MultiBinding();
multiBinding.Bindings.Add(this.ValueBinding);
}
multiBinding.Converter = converter;
if (this.Key != null) // Can't hit this case if ValueBinding != null
converter.Key = this.Key;
else
multiBinding.Bindings.Insert(0, this.KeyBinding);
return multiBinding.ProvideValue(serviceProvider);
}
public override object ProvideValue(IServiceProvider serviceProvider)
{
if (this.Key == null && this.KeyBinding == null)
{
throw new ArgumentException("Either Key or KeyBinding must be set");
}
if (this.Key != null && this.KeyBinding != null)
{
throw new ArgumentException("Either Key or KeyBinding must be set, but not both");
}
if (this.ValueBinding != null && this.ValueBindings != null)
{
throw new ArgumentException("ValueBinding and ValueBindings may not be set at the same time");
}
// If we've got no bindings, return a string. If we've got 1 binding, return it. If we've got 2 bindings,
// return a new MultiBinding.
// Unfortunately there's no nice way to generalise this...
if (this.KeyBinding == null && this.ValueBinding == null && this.ValueBindings == null)
{
// Just returning a string!
return(String.Format(this.StringFormat ?? "{0}", Localizer.Translate(this.Key)));
}
var converter = new LocalizeConverter();
converter.StringFormat = this.StringFormat;
// Single binding case
if (this.KeyBinding != null && this.ValueBinding == null && this.ValueBindings == null)
{
// Don't set the key, so it'll assume the binding is the key
converter.Converter = this.KeyBinding.Converter;
this.KeyBinding.Converter = converter;
return(this.KeyBinding.ProvideValue(serviceProvider));
}
if (this.KeyBinding == null && this.ValueBinding != null && this.ValueBindings == null)
{
// Set the key, it'll interpret the binding as the value
converter.Key = this.Key;
converter.Converter = this.ValueBinding.Converter;
this.ValueBinding.Converter = converter;
return(this.ValueBinding.ProvideValue(serviceProvider));
}
if (this.KeyBinding == null && this.ValueBinding == null && this.ValueBindings != null)
{
converter.Key = this.Key;
// No converter allowed here
this.ValueBindings.Converter = converter;
return(this.ValueBindings.ProvideValue(serviceProvider));
}
MultiBinding multiBinding;
// OK, multibinding cases
// If this.ValueBindings is set, we'll hijack that
// Otherwise, we'll create our own
if (this.ValueBindings != null)
{
// Not setting converter.Converter - no support yet
multiBinding = this.ValueBindings;
}
else // this.ValueBinding != null, according to preconditions
{
multiBinding = new MultiBinding();
multiBinding.Bindings.Add(this.ValueBinding);
}
multiBinding.Converter = converter;
if (this.Key != null) // Can't hit this case if ValueBinding != null
{
converter.Key = this.Key;
}
else
{
multiBinding.Bindings.Insert(0, this.KeyBinding);
}
return(multiBinding.ProvideValue(serviceProvider));
}
