/// <summary>
/// 创建页面视图
/// </summary>
/// <param name="controllerContext">控制器上下文</param>
/// <param name="viewPath">视图路径</param>
/// <param name="masterPath">母板路径</param>
/// <exception cref="System.NotSupportedException">当 masterPath 参数不为空，且当前创建的视图不支持母板时引发</exception>
/// <returns>页面视图对象</returns>
protected override IView CreateView(ControllerContext controllerContext, string viewPath, string masterPath)
{
var view = CreateViewCore(controllerContext, viewPath, false);
if (string.IsNullOrEmpty(masterPath))
{
var directory = VirtualPathUtility.GetDirectory(viewPath);
if (MvcEnvironment.Configuration.FallbackDefaultMaster)
{
masterPath = ViewHandlerProvider.FallbackSearch(VirtualPathProvider, directory, "_master.html");
}
else
{
masterPath = VirtualPathUtility.Combine(directory, "_master.html");
}
if (VirtualPathProvider.FileExists(masterPath))
{
var contentView = view as IContentView;
if (contentView != null)
{
contentView.InitializeMaster(CreateMaster(controllerContext, masterPath));
return(contentView);
}
}
return(view);
}
else
{
var contentView = view as IContentView;
if (contentView == null)
{
throw new InvalidOperationException("视图不支持母板");
}
contentView.InitializeMaster(CreateMaster(controllerContext, masterPath));
return(contentView);
}
}
/// <summary>
/// 获取视图处理程序
/// </summary>
/// <returns>视图处理程序</returns>
protected virtual IViewHandler GetHandler(string virtualPath)
{
var cacheKey = handlerPathCachePrefix + virtualPath;
var cacheItem = HttpRuntime.Cache.Get(cacheKey);
if (cacheItem == null)
{
var handlerPath = ViewHandlerProvider.GetHandlerPath(Scope);
cacheItem = new HandlerPathCacheItem()
{
HandlerPath = handlerPath
};
HttpRuntime.Cache.Insert(cacheKey, cacheItem, ScopeCacheDependency);
}
return(ViewHandlerProvider.GetViewHandler(virtualPath));
}
protected override IViewHandler GetHandler(string virtualPath)
{
return(ViewHandlerProvider.GetMasterViewHandler(virtualPath));
}
/// <summary>
/// 获取视图处理程序
/// </summary>
/// <returns>视图处理程序</returns>
protected virtual IViewHandler GetHandler(string virtualPath)
{
return(ViewHandlerProvider.GetViewHandler(virtualPath));
}