/// <summary>
/// Sets the property value of the instance.
/// </summary>
/// <param name="instance">The instance.</param>
/// <param name="memberName">The member name.</param>
/// <param name="value">The value.</param>
/// <returns><c>true</c> if the member was set successfully; otherwise <c>false</c>.</returns>
public virtual bool SetMemberValue <TValue>(object instance, string memberName, TValue value)
{
try
{
var modelEditor = instance as IModelEditor;
if (modelEditor != null && modelEditor.IsPropertyRegistered(memberName))
{
// Don't use SetValueFastbutUnsecure, change notifications must be possible
modelEditor.SetValue(memberName, value);
return(true);
}
if (instance is IPropertySerializable propertySerializable)
{
if (propertySerializable.SetPropertyValue(memberName, value))
{
return(true);
}
}
if (instance is IFieldSerializable fieldSerializable)
{
if (fieldSerializable.SetFieldValue(memberName, value))
{
return(true);
}
}
var modelType = instance.GetType();
IFastMemberInvoker fastMemberInvoker = null;
lock (_fastMemberInvokerCache)
{
if (!_fastMemberInvokerCache.TryGetValue(modelType, out fastMemberInvoker))
{
fastMemberInvoker = GetFastMemberInvoker(modelType);
_fastMemberInvokerCache[modelType] = fastMemberInvoker;
}
}
if (fastMemberInvoker.SetPropertyValue(instance, memberName, value))
{
return(true);
}
if (fastMemberInvoker.SetFieldValue(instance, memberName, value))
{
return(true);
}
Log.Warning($"Failed to set member '{instance.GetType().GetSafeFullName(false)}.{memberName}' because the member cannot be found on the model");
}
catch (Exception ex)
{
Log.Warning(ex, $"Failed to populate '{instance.GetType().GetSafeFullName(false)}.{memberName}', setting the member value threw an exception");
}
return(false);
}
/// <summary>
/// Initializes a new instance of the <see cref="AdvancedPropertyChangedEventArgs"/>"/> class.
/// </summary>
/// <param name="originalSender">The original sender.</param>
/// <param name="latestSender">The latest sender.</param>
/// <param name="propertyName">Name of the property.</param>
/// <param name="oldValue">The old value.</param>
/// <param name="newValue">The new value.</param>
/// <param name="isOldValueMeaningful">if set to <c>true</c>, the <paramref name="oldValue"/> has a meaningful value.</param>
/// <param name="isNewValueMeaningful">if set to <c>true</c>, the <paramref name="newValue"/> has a meaningful value.</param>
private AdvancedPropertyChangedEventArgs(object originalSender, object latestSender, string propertyName, object oldValue, object newValue,
bool isOldValueMeaningful, bool isNewValueMeaningful)
: base(propertyName)
{
OriginalSender = originalSender;
LatestSender = latestSender;
// Last resort to get the new value
if (!isNewValueMeaningful && !string.IsNullOrEmpty(propertyName))
{
var originalSenderType = originalSender?.GetType();
if (originalSenderType != null)
{
IFastMemberInvoker fastMemberInvoker = null;
lock (FastMemberInvokersCache)
{
if (!FastMemberInvokersCache.TryGetValue(originalSenderType, out fastMemberInvoker))
{
var fastMemberInvokerType = typeof(FastMemberInvoker <>).MakeGenericTypeEx(originalSenderType);
fastMemberInvoker = (IFastMemberInvoker)Activator.CreateInstance(fastMemberInvokerType);
FastMemberInvokersCache[originalSenderType] = fastMemberInvoker;
}
}
if (fastMemberInvoker.TryGetPropertyValue(originalSender, propertyName, out newValue))
{
isNewValueMeaningful = true;
}
}
}
OldValue = oldValue;
NewValue = newValue;
IsOldValueMeaningful = isOldValueMeaningful;
IsNewValueMeaningful = isNewValueMeaningful;
}
/// <summary>
/// Gets the property value of the instance.
/// </summary>
/// <typeparam name="TValue">The type of the value to retrieve.</typeparam>
/// <param name="instance">The instance.</param>
/// <param name="memberName">The member name.</param>
/// <param name="value">The member value to update.</param>
/// <returns><c>true</c> if the member was retrieved; otherwise <c>false</c>.</returns>
public virtual bool GetMemberValue <TValue>(object instance, string memberName, out TValue value)
{
try
{
var modelEditor = instance as IModelEditor;
if (modelEditor != null && modelEditor.IsPropertyRegistered(memberName))
{
value = modelEditor.GetValueFastButUnsecure <TValue>(memberName);
return(true);
}
if (instance is IPropertySerializable propertySerializable)
{
object objectValue = null;
if (propertySerializable.GetPropertyValue(memberName, ref objectValue))
{
value = (TValue)objectValue;
return(true);
}
}
if (instance is IFieldSerializable fieldSerializable)
{
object objectValue = null;
if (fieldSerializable.GetFieldValue(memberName, ref objectValue))
{
value = (TValue)objectValue;
return(true);
}
}
var modelType = instance.GetType();
IFastMemberInvoker fastMemberInvoker = null;
lock (_fastMemberInvokerCache)
{
if (!_fastMemberInvokerCache.TryGetValue(modelType, out fastMemberInvoker))
{
fastMemberInvoker = GetFastMemberInvoker(modelType);
_fastMemberInvokerCache[modelType] = fastMemberInvoker;
}
}
if (fastMemberInvoker.TryGetPropertyValue(instance, memberName, out value))
{
return(true);
}
if (fastMemberInvoker.TryGetFieldValue(instance, memberName, out value))
{
return(true);
}
return(false);
}
catch (Exception ex)
{
Log.Warning(ex, "Failed to get value of member '{0}.{1}', skipping item during serialization", instance.GetType().GetSafeFullName(false), memberName);
}
value = default;
return(false);
}
