/// <summary>
/// Attaches the specific event.
/// </summary>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="handlerName">
/// The handler name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
/// <returns>
/// The <see cref="Delegate"/>.
/// </returns>
private Delegate AttachEvent(string eventName, string handlerName, WeakEventFilterHandler filter = null)
{
if (this.targetType == null)
{
return(null);
}
this.eventFilter = filter;
this.HandlerName = handlerName;
EventInfo eventInfo = this.targetType.GetEvent(
eventName,
BindingFlags.Static | BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
if (eventInfo == null)
{
return(null); // No exception
}
ParameterExpression sender = Expression.Parameter(typeof(object), "sender");
ParameterExpression args = Expression.Parameter(typeof(EventArgs), "e");
Type eventHandlerType = eventInfo.EventHandlerType;
MethodCallExpression body = Expression.Call(Expression.Constant(this), handlerInfo, sender, args);
LambdaExpression lambda = Expression.Lambda(eventHandlerType, body, sender, args);
Delegate action = lambda.Compile();
MethodInfo addMethod = eventInfo.GetAddMethod(true);
addMethod.Invoke(this.BindTarget, new object[] { action });
return(action);
}
/// <summary>
/// Attaches the specific event.
/// </summary>
/// <param name="source">
/// The source.
/// </param>
/// <param name="sourceProperty">
/// The source property.
/// </param>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="handlerName">
/// The handler name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
public void AttachEvent(
object source,
string sourceProperty,
string eventName,
string handlerName,
WeakEventFilterHandler filter = null)
{
this.AttachEvent(new BindContext(source, sourceProperty), eventName, handlerName, filter);
}
/// <summary>
/// Attach event to bind source.
/// </summary>
/// <param name="target">
/// The target.
/// </param>
/// <param name="property">
/// The property.
/// </param>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
/// <returns>
/// The <see cref="WeakBinding"/>.
/// </returns>
public WeakBinding AttachSourceEvent(
object target,
string property,
string eventName,
WeakEventFilterHandler filter = null)
{
BindContext bindContext = this.GetBindContext(target, property);
return(this.AttachSourceEvent(bindContext, eventName, filter));
}
/// <summary>
/// Attaches the specific event.
/// </summary>
/// <param name="type">
/// The type.
/// </param>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="handlerName">
/// The handler name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
public void AttachEvent(Type type, string eventName, string handlerName, WeakEventFilterHandler filter = null)
{
this.DetachEvent();
this.EventName = eventName;
this.Data = null;
this.targetType = type;
this.eventAction = this.AttachEvent(eventName, handlerName, filter);
}
/// <summary>
/// Adds the convention.
/// </summary>
/// <param name="bindMode">
/// The bind mode.
/// </param>
/// <param name="targetMode">
/// The bind target.
/// </param>
/// <param name="eventName">
/// Name of the event.
/// </param>
/// <param name="eventFilter">
/// The event filter.
/// </param>
protected void AddConvention(
BindMode bindMode,
TargetMode targetMode,
string eventName,
WeakEventFilterHandler eventFilter = null)
{
if ((bindMode & this.bindMode) > 0)
{
this.AddConvention(targetMode, eventName, eventFilter);
}
}
/// <summary>
/// Adds the convention.
/// </summary>
/// <param name="targetMode">
/// The target mode.
/// </param>
/// <param name="eventName">
/// Name of the event.
/// </param>
/// <param name="eventFilter">
/// The event filter.
/// </param>
protected void AddConvention(TargetMode targetMode, string eventName, WeakEventFilterHandler eventFilter = null)
{
switch (targetMode)
{
case TargetMode.Target:
if (!this.TargetEvent.IsAttached)
{
this.AttachTargetEvent(eventName, eventFilter);
}
break;
case TargetMode.Source:
if (!this.SourceEvent.IsAttached)
{
this.AttachSourceEvent(eventName, eventFilter);
}
break;
}
}
/// <summary>
/// Attaches the specific event.
/// </summary>
/// <param name="context">
/// The source.
/// </param>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="handlerName">
/// The handler name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
public void AttachEvent(
BindContext context,
string eventName,
string handlerName,
WeakEventFilterHandler filter = null)
{
this.DetachEvent();
context.SourceChanged += this.OnSourceChanged;
this.EventName = eventName;
this.HandlerName = handlerName;
this.Data = context;
object value = this.Data.GetTarget();
if (value != null)
{
this.targetType = value.GetType();
this.eventTarget = new WeakReference(value);
this.eventAction = this.AttachEvent(eventName, handlerName, filter);
}
}
/// <summary>
/// Attaches the event to bind source.
/// </summary>
/// <param name="data">
/// The data.
/// </param>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
/// <returns>
/// The <see cref="WeakBinding"/>.
/// </returns>
internal WeakBinding AttachSourceEvent(BindContext data, string eventName, WeakEventFilterHandler filter = null)
{
this.SourceEvent.AttachEvent(data, eventName, SourceEventHandlerName, filter);
return(this);
}
/// <summary>
/// Attach event to bind source.
/// </summary>
/// <param name="type">
/// The type.
/// </param>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
/// <returns>
/// The <see cref="WeakBinding"/>.
/// </returns>
public WeakBinding AttachSourceEvent(Type type, string eventName, WeakEventFilterHandler filter = null)
{
this.SourceEvent.AttachEvent(type, eventName, SourceEventHandlerName, filter);
return(this);
}
/// <summary>
/// Attach event to bind source.
/// </summary>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
/// <returns>
/// The <see cref="WeakBinding"/>.
/// </returns>
public WeakBinding AttachSourceEvent(string eventName, WeakEventFilterHandler filter = null)
{
return(this.AttachSourceEvent(this.BindSource, eventName, filter));
}
/// <summary>
/// Attach event to bind target.
/// </summary>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
/// <returns>
/// The <see cref="WeakBinding"/>.
/// </returns>
public WeakBinding AttachTargetEvent(string eventName, WeakEventFilterHandler filter = null)
{
return(this.AttachTargetEvent(this.BindTarget, eventName, filter));
}
/// <summary>
/// Attaches the specific event.
/// </summary>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="handlerName">
/// The handler name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
/// <returns>
/// The <see cref="Delegate"/>.
/// </returns>
private Delegate AttachEvent(string eventName, string handlerName, WeakEventFilterHandler filter = null)
{
if (this.targetType == null)
{
return null;
}
this.eventFilter = filter;
this.HandlerName = handlerName;
EventInfo eventInfo = this.targetType.GetEvent(
eventName,
BindingFlags.Static | BindingFlags.Instance | BindingFlags.NonPublic | BindingFlags.Public);
if (eventInfo == null)
{
return null; // No exception
}
ParameterExpression sender = Expression.Parameter(typeof(object), "sender");
ParameterExpression args = Expression.Parameter(typeof(EventArgs), "e");
Type eventHandlerType = eventInfo.EventHandlerType;
MethodCallExpression body = Expression.Call(Expression.Constant(this), handlerInfo, sender, args);
LambdaExpression lambda = Expression.Lambda(eventHandlerType, body, sender, args);
Delegate action = lambda.Compile();
MethodInfo addMethod = eventInfo.GetAddMethod(true);
addMethod.Invoke(this.BindTarget, new object[] { action });
return action;
}
/// <summary>
/// Attaches the specific event.
/// </summary>
/// <param name="type">
/// The type.
/// </param>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="handlerName">
/// The handler name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
public void AttachEvent(Type type, string eventName, string handlerName, WeakEventFilterHandler filter = null)
{
this.DetachEvent();
this.EventName = eventName;
this.Data = null;
this.targetType = type;
this.eventAction = this.AttachEvent(eventName, handlerName, filter);
}
/// <summary>
/// Attaches the specific event.
/// </summary>
/// <param name="context">
/// The source.
/// </param>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="handlerName">
/// The handler name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
public void AttachEvent(
BindContext context,
string eventName,
string handlerName,
WeakEventFilterHandler filter = null)
{
this.DetachEvent();
context.SourceChanged += this.OnSourceChanged;
this.EventName = eventName;
this.HandlerName = handlerName;
this.Data = context;
object value = this.Data.GetTarget();
if (value != null)
{
this.targetType = value.GetType();
this.eventTarget = new WeakReference(value);
this.eventAction = this.AttachEvent(eventName, handlerName, filter);
}
}
/// <summary>
/// Attaches the specific event.
/// </summary>
/// <param name="source">
/// The source.
/// </param>
/// <param name="sourceProperty">
/// The source property.
/// </param>
/// <param name="eventName">
/// The event name.
/// </param>
/// <param name="handlerName">
/// The handler name.
/// </param>
/// <param name="filter">
/// The filter.
/// </param>
public void AttachEvent(
object source,
string sourceProperty,
string eventName,
string handlerName,
WeakEventFilterHandler filter = null)
{
this.AttachEvent(new BindContext(source, sourceProperty), eventName, handlerName, filter);
}
