/// <summary>
/// Creates a new value change record.
/// </summary>
/// <param name="valueChange">The value change record to create.</param>
public void CreateValueChange(IValueChange valueChange)
{
this.context.CreateValueChange(
valueChange.Id,
valueChange.MappingEntityTransactionId,
valueChange.ValueName,
valueChange.PreviousValue,
valueChange.NewValue);
}
/// <summary>
/// Two way binding for datasource, graphicObj=>dataSource link, datasource value has priority
/// and will be set as init for source property (in emitDataSourceBindings func)
/// </summary>
/// <param name="orig">Graphic object instance, source of binding</param>
/// <param name="origMember">Origin member name</param>
/// <param name="dest">datasource instance, target of the binding</param>
/// <param name="destMember">Destination member name</param>
static void dataSourceReverseBinding(IValueChange orig, string origMember, object dest, string destMember)
{
Type tOrig = orig.GetType ();
Type tDest = dest.GetType ();
PropertyInfo piOrig = tOrig.GetProperty (origMember);
PropertyInfo piDest = tDest.GetProperty (destMember);
#region ValueChanged emit
DynamicMethod dm = new DynamicMethod ("dyn_valueChanged" + NewId,
typeof (void), CompilerServices.argsBoundValueChange, true);
ILGenerator il = dm.GetILGenerator (256);
System.Reflection.Emit.Label endMethod = il.DefineLabel ();
il.DeclareLocal (CompilerServices.TObject);
il.Emit (OpCodes.Nop);
//load value changed member name onto the stack
il.Emit (OpCodes.Ldarg_2);
il.Emit (OpCodes.Ldfld, CompilerServices.fiVCMbName);
//test if it's the expected one
il.Emit (OpCodes.Ldstr, origMember);
il.Emit (OpCodes.Ldc_I4_4);//StringComparison.Ordinal
il.Emit (OpCodes.Callvirt, CompilerServices.stringEquals);
il.Emit (OpCodes.Brfalse, endMethod);
//set destination member with valueChanged new value
//load destination ref
il.Emit (OpCodes.Ldarg_0);
//load new value onto the stack
il.Emit (OpCodes.Ldarg_2);
il.Emit (OpCodes.Ldfld, CompilerServices.fiVCNewValue);
CompilerServices.emitConvert (il, piOrig.PropertyType, piDest.PropertyType);
il.Emit (OpCodes.Callvirt, piDest.GetSetMethod ());
il.MarkLabel (endMethod);
il.Emit (OpCodes.Ret);
#endregion
orig.ValueChanged += (EventHandler<ValueChangeEventArgs>)dm.CreateDelegate (typeof(EventHandler<ValueChangeEventArgs>), dest);
}
/// <summary>
/// Creates a new value change record.
/// </summary>
/// <param name="valueChange">The value change record to create.</param>
public void CreateValueChange(IValueChange valueChange)
{
this.Invoke(
() => this.repository.CreateValueChange(valueChange),
nameof(this.repository.CreateValueChange));
}
