private PluginTree(PluginOptions options)
{
this.Options = options ?? throw new ArgumentNullException(nameof(options));
this.Root = new PluginTreeNode(this);
//创建插件加载器
this.Loader = new PluginLoader(new PluginResolver(this));
//侦听插件加载器的相关事件
this.Loader.Loaded += delegate(object sender, PluginLoadEventArgs args)
{
//设置插件树当前状态为“已初始化”
this.Status = PluginTreeStatus.Loaded;
};
this.Loader.Loading += delegate(object sender, PluginLoadEventArgs args)
{
//设置插件树当前状态为“已初始化”
this.Status = PluginTreeStatus.Loading;
//清空所有子节点
this.Root.Children.Clear();
};
AssemblyLoadContext.Default.Resolving += Default_Resolving;
}
public PluginLoadingEventArgs(string pluginFile, PluginOptions options) : base(options)
{
if (string.IsNullOrEmpty(pluginFile))
{
throw new ArgumentNullException(nameof(pluginFile));
}
this.PluginFile = pluginFile;
}
public static PluginTree Get(PluginOptions options)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
return(_instances.GetOrAdd(options, key => new PluginTree(key)));
}
public PluginLoadEventArgs(PluginOptions options)
{
this.Options = options ?? throw new ArgumentNullException(nameof(options));
}
public PluginLoadedEventArgs(Plugin plugin, PluginOptions options) : base(options)
{
this.Plugin = plugin ?? throw new ArgumentNullException(nameof(plugin));
}