public override object ProvideValue(IServiceProvider serviceProvider)
{
IProvideValueTarget Target = (IProvideValueTarget)serviceProvider.GetService(typeof(IProvideValueTarget));
if (Target.TargetObject is DependencyObject)
{
DependencyObject TargetObject = (DependencyObject)Target.TargetObject;
ITagValueSettingStore PropertyStore = PersistentPropertyExtension.TryGetPropertyStoreFromResources(TargetObject);
PropertyStoreAdapter StoreAdapter = PropertyStoreAdapter.GetInstanceFor(PropertyStore);
SettingValue Value = new SettingValue(StoreAdapter, this.Name, this.DefaultValue, TargetObject);
Binding SettingBinding = new Binding("Value");
SettingBinding.Mode = BindingMode.TwoWay;
SettingBinding.UpdateSourceTrigger = UpdateSourceTrigger.PropertyChanged;
SettingBinding.Source = Value;
return(SettingBinding.ProvideValue(serviceProvider));
}
else
{
return(this);
}
}
private static ITagValueSettingStore TryGetPropertyStoreFromResources(DependencyObject targetObject)
{
ITagValueSettingStore PropertyStore = null;
if (targetObject is FrameworkElement)
{
PropertyStore = ((FrameworkElement)targetObject).TryFindResource("PersistentProperties") as ITagValueSettingStore;
}
else if (targetObject is FrameworkContentElement)
{
PropertyStore = ((FrameworkContentElement)targetObject).TryFindResource("PersistentProperties") as ITagValueSettingStore;
}
return(PropertyStore);
}
public static PropertyStoreAdapter GetInstanceFor(ITagValueSettingStore tagValueSettingStore)
{
return(PropertyStoreAdapter.instances.GetObject(tagValueSettingStore ?? PropertyStoreAdapter.defaultStore));
}
private PropertyStoreAdapter(ITagValueSettingStore storage)
{
this.storage = storage;
this.properties = new ObjectCache <string, object, PropertyAdapter>((name, defaultValue) => new PropertyAdapter(name, this.storage, defaultValue));
}
public PropertyAdapter(string key, ITagValueSettingStore propertyStore, object defaultValue)
{
this.key = key;
this.propertyStore = propertyStore;
this.value = this.propertyStore.ContainsKey(key) ? this.propertyStore[key] : defaultValue;
}
