internal void UpdateDataSourcePropertyValue(string propertyName)
{
if (!listenForViewModelChanges)
{
return;
}
if (String.IsNullOrEmpty(propertyName))
{
return;
}
var elements = xmlLayout.GetElementsForDataSource(propertyName, propertyName);
if (elements.Count > 0)
{
object value = MVVMUtilities.GetNestedMemberValue(typeof(T), propertyName, viewModel);
if (value is IObservableList)
{
elements.ForEach(e => e.SetListData((IObservableList)value));
}
else
{
elements.ForEach(e => e.SetValue(value != null ? value.ToString() : null, false));
}
}
}
/// <summary>
/// Set the value of a ViewModel field or property
/// </summary>
/// <param name="memberName"></param>
/// <param name="newValue"></param>
public void SetValue(string memberName, object newValue)
{
MVVMUtilities.SetNestedMemberValue(this.GetType(), memberName, this, newValue, controller.xmlLayout);
/*
* var memberInfo = GetType().GetMember(memberName).FirstOrDefault();
*
* if (memberInfo != null)
* {
* var valueBefore = GetValue(memberName);
*
* if (valueBefore != newValue)
* {
* var newValueType = newValue.GetType();
* var memberDataType = memberInfo.GetMemberDataType();
*
* if (newValueType == typeof(System.String) && newValueType != memberDataType)
* {
* memberInfo.SetMemberValue(this, ((string)newValue).ChangeToType(memberDataType, this.controller.xmlLayout));
* }
* else
* {
* memberInfo.SetMemberValue(this, newValue);
* }
* }
* }*/
}
public override void ViewModelMemberChanged(string memberName)
{
if (!listenForViewModelChanges)
{
return;
}
// if this member is inline, then a complete rebuild is necessary
if (xmlLayout.Xml.Contains("{" + memberName + "}"))
{
ViewModelUpdated();
return;
}
// otherwise, look for the element(s) using the data source string
var elements = xmlLayout.GetElementsForDataSource(memberName, memberName);
if (elements.Count > 0)
{
object value = MVVMUtilities.GetNestedMemberValue(typeof(T), memberName, viewModel);
if (value is IObservableList)
{
elements.ForEach(e => e.SetListData((IObservableList)value));
}
else
{
elements.ForEach(e => e.SetValue(value != null ? value.ToString() : null, false));
}
}
return;
}
/// <summary>
/// Get the value of a field or property
/// </summary>
/// <param name="memberName"></param>
/// <returns></returns>
public object GetValue(string memberName)
{
return(MVVMUtilities.GetNestedMemberValue(GetType(), memberName, this));
}
