| private GetInvokee ( Type componentClass, object component ) : object | ||
| componentClass | Type | |
| component | object | |
| return | object | |
public override void SetValue(object component, object value)
{
DesignerTransaction tran = CreateTransaction(component, "Set Property '" + Name + "'");
object propertyHolder = MemberDescriptor.GetInvokee(_componentType, component);
object old = GetValue(propertyHolder);
try {
GetPropertyInfo().SetValue(propertyHolder, value, null);
EndTransaction(component, tran, old, value, true);
} catch {
EndTransaction(component, tran, old, value, false);
throw;
}
}
public override bool CanResetValue(object component)
{
component = MemberDescriptor.GetInvokee(_componentType, component);
DefaultValueAttribute attrib = ((DefaultValueAttribute)Attributes[typeof(DefaultValueAttribute)]);
if (attrib != null)
{
object current = GetValue(component);
if (attrib.Value == null || current == null)
{
if (attrib.Value != current)
{
return(true);
}
if (attrib.Value == null && current == null)
{
return(false);
}
}
return(!attrib.Value.Equals(current));
}
else
{
#if NET_2_0
if (!_member.CanWrite)
{
return(false);
}
#endif
MethodInfo mi = FindPropertyMethod(component, "ShouldPersist");
if (mi != null)
{
return((bool)mi.Invoke(component, null));
}
mi = FindPropertyMethod(component, "ShouldSerialize");
if (mi != null && !((bool)mi.Invoke(component, null)))
{
return(false);
}
mi = FindPropertyMethod(component, "Reset");
return(mi != null);
}
}
public override void SetValue(object component, object value)
{
System.ComponentModel.Design.DesignerTransaction tran = this.CreateTransaction(component, "Set Property '" + this.Name + "'");
object invokee = MemberDescriptor.GetInvokee(this._componentType, component);
object value2 = this.GetValue(invokee);
try
{
this.InitAccessors();
this.setter.SetValue(invokee, value, null);
this.EndTransaction(component, tran, value2, value, true);
}
catch
{
this.EndTransaction(component, tran, value2, value, false);
throw;
}
}
public override void SetValue(object component, object value)
{
DesignerTransaction tran = CreateTransaction(component, "Set Property '" + Name + "'");
object invokee = MemberDescriptor.GetInvokee(_componentType, component);
object value2 = GetValue(invokee);
try
{
InitAccessors();
setter.SetValue(invokee, value, null);
EndTransaction(component, tran, value2, value, commit: true);
}
catch
{
EndTransaction(component, tran, value2, value, commit: false);
throw;
IL_0064 :;
}
}
public override bool CanResetValue(object component)
{
component = MemberDescriptor.GetInvokee(_componentType, component);
DefaultValueAttribute defaultValueAttribute = (DefaultValueAttribute)Attributes[typeof(DefaultValueAttribute)];
if (defaultValueAttribute != null)
{
object value = GetValue(component);
if (defaultValueAttribute.Value == null || value == null)
{
if (defaultValueAttribute.Value != value)
{
return(true);
}
if (defaultValueAttribute.Value == null && value == null)
{
return(false);
}
}
return(!defaultValueAttribute.Value.Equals(value));
}
if (!_member.CanWrite)
{
return(false);
}
MethodInfo methodInfo = FindPropertyMethod(component, "ShouldPersist");
if (methodInfo != null)
{
return((bool)methodInfo.Invoke(component, null));
}
methodInfo = FindPropertyMethod(component, "ShouldSerialize");
if (methodInfo != null && !(bool)methodInfo.Invoke(component, null))
{
return(false);
}
methodInfo = FindPropertyMethod(component, "Reset");
return(methodInfo != null);
}
public override bool ShouldSerializeValue(object component)
{
component = MemberDescriptor.GetInvokee(_componentType, component);
if (IsReadOnly)
{
MethodInfo mi = FindPropertyMethod(component, "ShouldSerialize");
if (mi != null)
{
return((bool)mi.Invoke(component, null));
}
return(Attributes.Contains(DesignerSerializationVisibilityAttribute.Content));
}
DefaultValueAttribute attrib = ((DefaultValueAttribute)Attributes[typeof(DefaultValueAttribute)]);
if (attrib != null)
{
object current = GetValue(component);
if (attrib.Value == null || current == null)
{
return(attrib.Value != current);
}
return(!attrib.Value.Equals(current));
}
else
{
MethodInfo mi = FindPropertyMethod(component, "ShouldSerialize");
if (mi != null)
{
return((bool)mi.Invoke(component, null));
}
// MSDN: If this method cannot find a DefaultValueAttribute or a ShouldSerializeMyProperty method,
// it cannot create optimizations and it returns true.
return(true);
}
}
public override void ResetValue(object component)
{
object invokee = MemberDescriptor.GetInvokee(_componentType, component);
DefaultValueAttribute defaultValueAttribute = (DefaultValueAttribute)Attributes[typeof(DefaultValueAttribute)];
if (defaultValueAttribute != null)
{
SetValue(invokee, defaultValueAttribute.Value);
}
DesignerTransaction tran = CreateTransaction(component, "Reset Property '" + Name + "'");
object value = GetValue(invokee);
try
{
FindPropertyMethod(invokee, "Reset")?.Invoke(invokee, null);
EndTransaction(component, tran, value, GetValue(invokee), commit: true);
}
catch
{
EndTransaction(component, tran, value, GetValue(invokee), commit: false);
throw;
IL_00a9 :;
}
}
public override object GetValue(object component)
{
component = MemberDescriptor.GetInvokee(_componentType, component);
InitAccessors();
return(getter.GetValue(component, null));
}
public override object GetValue(object component)
{
component = MemberDescriptor.GetInvokee(_componentType, component);
return(GetPropertyInfo().GetValue(component, null));
}