Files
Umbraco-CMS/src/Umbraco.Core/Events/IEventDispatcher.cs
2020-02-24 08:21:53 +01:00

99 lines
4.9 KiB
C#

using System;
using System.Collections.Generic;
namespace Umbraco.Core.Events
{
/// <summary>
/// Dispatches events from within a scope.
/// </summary>
/// <remarks>
/// <para>The name of the event is auto-magically discovered by matching the sender type, args type, and
/// eventHandler type. If the match is not unique, then the name parameter must be used to specify the
/// name in an explicit way.</para>
/// <para>What happens when an event is dispatched depends on the scope settings. It can be anything from
/// "trigger immediately" to "just ignore". Refer to the scope documentation for more details.</para>
/// </remarks>
public interface IEventDispatcher
{
// not sure about the Dispatch & DispatchCancelable signatures at all for now
// nor about the event name thing, etc - but let's keep it like this
/// <summary>
/// Dispatches a cancelable event.
/// </summary>
/// <param name="eventHandler">The event handler.</param>
/// <param name="sender">The object that raised the event.</param>
/// <param name="args">The event data.</param>
/// <param name="name">The optional name of the event.</param>
/// <returns>A value indicating whether the cancelable event was cancelled.</returns>
/// <remarks>See general remarks on the interface.</remarks>
bool DispatchCancelable(EventHandler eventHandler, object sender, CancellableEventArgs args, string name = null);
/// <summary>
/// Dispatches a cancelable event.
/// </summary>
/// <param name="eventHandler">The event handler.</param>
/// <param name="sender">The object that raised the event.</param>
/// <param name="args">The event data.</param>
/// <param name="name">The optional name of the event.</param>
/// <returns>A value indicating whether the cancelable event was cancelled.</returns>
/// <remarks>See general remarks on the interface.</remarks>
bool DispatchCancelable<TArgs>(EventHandler<TArgs> eventHandler, object sender, TArgs args, string name = null)
where TArgs : CancellableEventArgs;
/// <summary>
/// Dispatches a cancelable event.
/// </summary>
/// <param name="eventHandler">The event handler.</param>
/// <param name="sender">The object that raised the event.</param>
/// <param name="args">The event data.</param>
/// <param name="name">The optional name of the event.</param>
/// <returns>A value indicating whether the cancelable event was cancelled.</returns>
/// <remarks>See general remarks on the interface.</remarks>
bool DispatchCancelable<TSender, TArgs>(TypedEventHandler<TSender, TArgs> eventHandler, TSender sender, TArgs args, string name = null)
where TArgs : CancellableEventArgs;
/// <summary>
/// Dispatches an event.
/// </summary>
/// <param name="eventHandler">The event handler.</param>
/// <param name="sender">The object that raised the event.</param>
/// <param name="args">The event data.</param>
/// <param name="name">The optional name of the event.</param>
/// <remarks>See general remarks on the interface.</remarks>
void Dispatch(EventHandler eventHandler, object sender, EventArgs args, string name = null);
/// <summary>
/// Dispatches an event.
/// </summary>
/// <param name="eventHandler">The event handler.</param>
/// <param name="sender">The object that raised the event.</param>
/// <param name="args">The event data.</param>
/// <param name="name">The optional name of the event.</param>
/// <remarks>See general remarks on the interface.</remarks>
void Dispatch<TArgs>(EventHandler<TArgs> eventHandler, object sender, TArgs args, string name = null);
/// <summary>
/// Dispatches an event.
/// </summary>
/// <param name="eventHandler">The event handler.</param>
/// <param name="sender">The object that raised the event.</param>
/// <param name="args">The event data.</param>
/// <param name="name">The optional name of the event.</param>
/// <remarks>See general remarks on the interface.</remarks>
void Dispatch<TSender, TArgs>(TypedEventHandler<TSender, TArgs> eventHandler, TSender sender, TArgs args, string name = null);
/// <summary>
/// Notifies the dispatcher that the scope is exiting.
/// </summary>
/// <param name="completed">A value indicating whether the scope completed.</param>
void ScopeExit(bool completed);
/// <summary>
/// Gets the collected events.
/// </summary>
/// <returns>The collected events.</returns>
IEnumerable<IEventDefinition> GetEvents(EventDefinitionFilter filter);
}
}