public void SetSourceValue(object value)
{
if (BlockSetSourceValue)
{
return;
}
SourceValue = value;
if (SourcePropertyName == null || !PropertyInfo.CanWrite)
{
return;
}
if (ValidatesOnExceptions)
{
Control.Validation.Clear();
}
try {
if (PropertyInfo.PropertyType == typeof(MVVMBinding))
{
MVVMBinding binding = PropertyInfo.GetValue(Instance, null) as MVVMBinding;
if (binding != null)
{
binding.SetTargetValue(value);
}
return;
}
PropertyInfo.SetValue(Instance, MVVMAPI.ChangeType(value, PropertyInfo.PropertyType), null);
} catch (Exception exception) {
if (ValidatesOnExceptions)
{
Control.Validation.Add(new MVVMValidationError(exception.GetBaseException().Message, exception));
}
}
}
protected void SetBinding(
ref MVVMBinding binding, MVVMBinding value,
MVVMFunc <object> getTargetValue = null, Action <object> setTargetValue = null,
bool isInteractive = false, bool isText = false,
bool isDataContext = false, MVVMAction unbind = null, [CallerMemberName] string propertyName = null
)
{
if (!isDataContext && binding != null)
{
Bindings.Remove(binding);
}
binding = value;
if (binding == null)
{
return;
}
binding.Control = this;
if (propertyName == null)
{
propertyName = MVVMAPI.GetCallerMemberName();
}
binding.TargetPropertyName = propertyName;
binding.IsDataContext = isDataContext;
binding.OnGetTargetValue = getTargetValue;
binding.OnSetTargetValue = setTargetValue;
binding.OnUnbind = unbind;
binding.DefaultMode = isInteractive ? MVVMBindingMode.TwoWay : MVVMBindingMode.OneWay;
binding.DefaultUpdateSourceTrigger = isText ? MVVMUpdateSourceTrigger.LostFocus : MVVMUpdateSourceTrigger.PropertyChanged;
if (!isDataContext)
{
Bindings.Add(binding);
}
}
internal protected void OnChanged(MVVMBinding binding, MVVMOnChangedType onChangedType = MVVMOnChangedType.PropertyChanged)
{
if (binding == null || binding.BlockOnChanged > 0 || binding.IsTrigger)
{
return;
}
switch (binding.GetMode())
{
case MVVMBindingMode.TwoWay:
case MVVMBindingMode.OneWayToSource:
switch (binding.GetUpdateSourceTrigger())
{
case MVVMUpdateSourceTrigger.PropertyChanged:
if (onChangedType == MVVMOnChangedType.PropertyChanged)
{
binding.OneWaySetSourceValue();
}
break;
case MVVMUpdateSourceTrigger.LostFocus:
if (onChangedType == MVVMOnChangedType.LostFocus)
{
binding.OneWaySetSourceValue();
}
break;
}
break;
}
this.RaisePropertyChanged(binding.TargetPropertyName);
}
public MVVMSetter(MVVMBinding property, object value)
{
Type = MVVMSetterType.Value;
Property = property;
Value = value;
Property.IsTrigger = true;
}
protected MVVMBinding GetBinding(ref MVVMBinding binding, Action <MVVMBinding> setBinding)
{
if (binding == null)
{
setBinding(new MVVMBinding(string.Empty));
}
return(binding);
}
public MVVMSetter(MVVMBinding property, MVVMBinding value)
{
Type = MVVMSetterType.Binding;
Property = property;
BindingValue = value;
Property.IsTrigger = true;
BindingValue.IsTrigger = true;
}
public MVVMTrigger(MVVMBinding property, Predicate <object> predicate)
{
Type = MVVMTriggerType.Predicate;
Property = property;
Predicate = predicate;
Property.IsTrigger = true;
Property.OnSetTargetValue = OnSetTargetValue;
}
public MVVMTrigger(MVVMBinding property, object value)
{
Type = MVVMTriggerType.Value;
Property = property;
Value = value;
Property.IsTrigger = true;
Property.OnSetTargetValue = OnSetTargetValue;
}
public MVVMTrigger(MVVMBinding property, MVVMBinding bindingValue)
{
Type = MVVMTriggerType.Binding;
Property = property;
BindingValue = bindingValue;
Property.IsTrigger = true;
BindingValue.IsTrigger = true;
Property.OnSetTargetValue = OnSetTargetValue;
}
protected void OnCommand(MVVMBinding command, MVVMBinding parameter)
{
if (command == null)
{
return;
}
IMVVMCommand relayCommand = command.GetTargetValue <IMVVMCommand> ();
if (relayCommand == null)
{
return;
}
object value = parameter == null ? null : parameter.GetTargetValue();
if (relayCommand.CanExecute(value))
{
relayCommand.Execute(value);
}
}
public MVVMTrigger(MVVMBinding binding, object value)
{
Binding = binding;
Value = value;
Binding.IsTrigger = true;
Binding.OnSetTargetValue = targetValue => {
if (Equals(targetValue, Value))
{
foreach (MVVMSetter setter in Setters)
{
setter.Apply();
}
}
else
{
foreach (MVVMSetter setter in Setters)
{
setter.Restore();
}
}
};
}
protected override void OnSetText(MVVMBinding text)
{
text.DefaultMode = MVVMBindingMode.TwoWay;
text.DefaultUpdateSourceTrigger = MVVMUpdateSourceTrigger.PropertyChanged;
}
public MVVMSetter(string property, MVVMBinding value) : this(new MVVMBinding(new MVVMRelativeSource(), property), value)
{
}
public MVVMTrigger(string property, MVVMBinding bindingValue) : this(new MVVMBinding(new MVVMRelativeSource(), property), bindingValue)
{
}
protected virtual void OnSetText(MVVMBinding text)
{
}
protected override void OnSetText(MVVMBinding text)
{
text.DefaultMode = MVVMBindingMode.TwoWay;
}
