opensim/OpenSim/Region/Framework/Interfaces/IRegionModuleBase.cs

/*
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 *       derived from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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using System;
using Mono.Addins;
using Nini.Config;
using OpenSim.Region.Framework.Scenes;

namespace OpenSim.Region.Framework.Interfaces
{
    public interface IRegionModuleBase
    {
        /// <value>
        /// The name of the module
        /// </value>
        string Name { get; }

        /// <summary>
        /// If this returns non-null, it is the type of an interface that
        /// this module intends to register.
        /// This will cause the loader to defer loading of this module
        /// until all other modules have been loaded. If no other module
        /// has registered the interface by then, this module will be
        /// activated, else it will remain inactive, letting the other module
        /// take over. This should return non-null ONLY in modules that are
        /// intended to be easily replacable, e.g. stub implementations
        /// that the developer expects to be replaced by third party provided
        /// modules.
        /// </summary>
        Type ReplacableInterface { get; }

        /// <summary>
        /// This is called to initialize the region module. For shared modules, this is called
        /// exactly once, after creating the single (shared) instance. For non-shared modules,
        /// this is called once on each instance, after the instace for the region has been created.
        /// </summary>
        /// <param name="source">
        /// A <see cref="IConfigSource"/>
        /// </param>
        void Initialise(IConfigSource source);

        /// <summary>
        /// This is the inverse to <see cref="Initialise"/>. After a Close(), this instance won't be usable anymore.
        /// </summary>
        void Close();

        /// <summary>
        /// This is called whenever a <see cref="Scene"/> is added. For shared modules, this can happen several times.
        /// For non-shared modules, this happens exactly once, after <see cref="Initialise"/> has been called.
        /// </summary>
        /// <param name="scene">
        /// A <see cref="Scene"/>
        /// </param>
        void AddRegion(Scene scene);

        /// <summary>
        /// This is called whenever a <see cref="Scene"/> is removed. For shared modules, this can happen several times.
        /// For non-shared modules, this happens exactly once, if the scene this instance is associated with is removed.
        /// </summary>
        /// <param name="scene">
        /// A <see cref="Scene"/>
        /// </param>
        void RemoveRegion(Scene scene);

        /// <summary>
        /// This will be called once for every scene loaded. In a shared module
        /// this will be multiple times in one instance, while a nonshared
        /// module instance will only be called once.
        /// This method is called after AddRegion has been called in all
        /// modules for that scene, providing an opportunity to request 
        /// another module's interface, or hook an event from another module.
        /// </summary>
        /// <param name="scene">
        /// A <see cref="Scene"/>
        /// </param>
        void RegionLoaded(Scene scene);
    }

}