/// <summary>
/// Returns the value of the property or field with the specified <paramref name="name"/>.
/// </summary>
/// <param name="obj">The object.</param>
/// <param name="name">The name of the property or field whose value is to be returned.</param>
/// <param name="index">Optional index values for indexed properties. This value should be <c>null</c> for non-indexed properties.</param>
public static object GetValue(this IPairable obj, string name, object[] index)
{
if (obj == null)
{
return(null);
}
var type = obj.GetType();
var property = Device.Reflector.GetProperty(type, name);
if (property != null)
{
return(property.GetValue(obj, index));
}
var field = Device.Reflector.GetField(type, name);
if (field != null)
{
return(field.GetValue(obj));
}
var pairable = obj as IPairable;
if (pairable == null || pairable.Pair == null)
{
return(null);
}
obj = pairable.Pair;
type = obj.GetType();
property = Device.Reflector.GetProperty(type, name);
if (property != null)
{
return(property.GetValue(obj, index));
}
field = Device.Reflector.GetField(type, name);
if (field != null)
{
return(field.GetValue(obj));
}
return(null);
}
internal static bool RaiseEvent(this IPairable obj, string eventName, EventArgs args)
{
var type = obj.GetType();
var evt = type.GetEvent(eventName, BindingFlags.Instance | BindingFlags.Public);
if (evt != null)
{
var attribute = evt.GetCustomAttributes <EventDelegateAttribute>().FirstOrDefault();
if (attribute != null)
{
eventName = attribute.DelegateName;
}
FieldInfo info = null;
do
{
info = type.GetField(eventName, BindingFlags.Instance | BindingFlags.NonPublic);
type = type.BaseType;
}while (info == null && type != null);
if (info != null)
{
var del = info.GetValue(obj) as MulticastDelegate;
if (del != null)
{
var invocationList = del.GetInvocationList();
foreach (var method in invocationList)
{
method.Method.Invoke(method.Target, new object[] { obj.Pair ?? obj, EventArgs.Empty });
}
return(true);
}
}
}
return(false);
}
/// <summary>
/// Attempts to raise the event with the specified name and <see cref="EventArgs"/> on the current instance.
/// </summary>
/// <param name="obj">The current object.</param>
/// <param name="eventName">The name of the event to be raised.</param>
/// <param name="args">The <see cref="EventArgs"/> instance containing the event data.</param>
/// <returns><c>true</c> if the event is successfully raised, otherwise <c>false</c>.</returns>
public static bool RaiseEvent(this IPairable obj, string eventName, EventArgs args)
{
if (obj == null)
{
return(false);
}
var type = obj.GetType();
var evt = Device.Reflector.GetEvent(type, eventName);
if (evt == null)
{
return(false);
}
var attribute = evt.GetCustomAttributes(typeof(EventDelegateAttribute), true).FirstOrDefault() as EventDelegateAttribute;
if (attribute != null)
{
eventName = attribute.DelegateName;
}
FieldInfo info;
do
{
info = Device.Reflector.GetField(type, eventName);
type = Device.Reflector.GetBaseType(type);
}while (info == null && type != null);
if (info == null && obj.Pair != null)
{
obj = obj.Pair;
type = obj.GetType();
evt = Device.Reflector.GetEvent(type, eventName);
if (evt == null)
{
return(false);
}
attribute = evt.GetCustomAttributes(typeof(EventDelegateAttribute), true).FirstOrDefault() as EventDelegateAttribute;
if (attribute != null)
{
eventName = attribute.DelegateName;
}
do
{
info = Device.Reflector.GetField(type, eventName);
type = Device.Reflector.GetBaseType(type);
}while (info == null && type != null);
}
if (info == null)
{
return(false);
}
var del = info.GetValue(obj) as MulticastDelegate;
if (del == null)
{
return(false);
}
var invocationList = del.GetInvocationList();
foreach (var method in invocationList)
{
method.Raise(obj, args);
}
return(true);
}
/// <summary>
/// Sets the value of the property or field with the specified <paramref name="name"/> when running on one of the specified <see cref="MobileTarget"/>s.
/// </summary>
/// <param name="obj">The object.</param>
/// <param name="name">The name of the property or field whose value is to be set.</param>
/// <param name="value">The value to set to the property or field.</param>
/// <param name="index">Optional index values for indexed properties. This value should be <c>null</c> for non-indexed properties.</param>
/// <param name="converter">An optional converter to use on the value prior to setting the property or field.</param>
/// <param name="targets">The targets on which the code must be running for the value to be set.</param>
public static void SetValue(this IPairable obj, string name, object value, object[] index, IValueConverter converter, MobileTarget targets)
{
if (obj == null || !targets.HasFlag(iApp.Factory.Target))
{
return;
}
var type = obj.GetType();
try
{
var property = Device.Reflector.GetProperty(type, name);
if (property != null)
{
if (converter != null)
{
value = converter.Convert(value, property.PropertyType, null);
}
else
{
value = Binding.GetConvertedValue(value, property.PropertyType);
}
property.SetValue(obj, value, index);
return;
}
var field = Device.Reflector.GetField(type, name);
if (field != null)
{
if (converter != null)
{
value = converter.Convert(value, field.FieldType, null);
}
else
{
value = Binding.GetConvertedValue(value, field.FieldType);
}
field.SetValue(obj, value);
return;
}
if (obj != null && obj.Pair != null)
{
type = obj.Pair.GetType();
property = Device.Reflector.GetProperty(type, name);
if (property != null)
{
if (converter != null)
{
value = converter.Convert(value, property.PropertyType, null);
}
else
{
value = Binding.GetConvertedValue(value, property.PropertyType);
}
property.SetValue(obj.Pair, value, index);
return;
}
field = Device.Reflector.GetField(type, name);
if (field != null)
{
if (converter != null)
{
value = converter.Convert(value, field.FieldType, null);
}
else
{
value = Binding.GetConvertedValue(value, field.FieldType);
}
field.SetValue(obj.Pair, value);
}
}
}
catch (Exception e)
{
iApp.Log.Warn("Unable to set value of member on {0}.", e, obj.ToString());
}
}
