MasterPageParser.cs :  » 2.6.4-mono-.net-core » System.Web » System » Web » UI » C# / CSharp Open Source

//
// System.Web.UI.MasterPageParser
//
// Authors:
//   Lluis Sanchez Gual (lluis@novell.com)
//
// (C) 2005-2010 Novell, Inc.
//

//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//

using System;
using System.Collections;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Web;
using System.Web.Compilation;
using System.Web.Hosting;
using System.Web.Util;

namespace System.Web.UI{
  internal sealed class MasterPageParser: UserControlParser
  {
    Type masterType;
    string masterTypeVirtualPath;
    List <string> contentPlaceHolderIds;
    string cacheEntryName;
    
    internal MasterPageParser (VirtualPath virtualPath, string inputFile, HttpContext context)
      : base (virtualPath, inputFile, context, "System.Web.UI.MasterPage")
    {
      this.cacheEntryName = String.Concat ("@@MasterPagePHIDS:", virtualPath, ":", inputFile);
      
      contentPlaceHolderIds = HttpRuntime.InternalCache.Get (this.cacheEntryName) as List <string>;
      LoadConfigDefaults ();
    }

    internal MasterPageParser (VirtualPath virtualPath, TextReader reader, HttpContext context)
      : this (virtualPath, null, reader, context)
    {
    }
    
    internal MasterPageParser (VirtualPath virtualPath, string inputFile, TextReader reader, HttpContext context)
      : base (virtualPath, inputFile, reader, context)
    {
      this.cacheEntryName = String.Concat ("@@MasterPagePHIDS:", virtualPath, ":", InputFile);
      
      contentPlaceHolderIds = HttpRuntime.InternalCache.Get (this.cacheEntryName) as List <string>;
      LoadConfigDefaults ();
    }
    
    public static MasterPage GetCompiledMasterInstance (string virtualPath, string inputFile, HttpContext context)
    {
      return BuildManager.CreateInstanceFromVirtualPath (virtualPath, typeof (MasterPage)) as MasterPage;
    }

    public static Type GetCompiledMasterType (string virtualPath, string inputFile, HttpContext context)
    {
      return BuildManager.GetCompiledType (virtualPath);
    }
    
    internal override void HandleOptions (object obj)
    {
      base.HandleOptions (obj);

      MasterPage mp = (MasterPage)obj;
      mp.MasterPageFile = MasterPageFile;
    }

    internal override void AddDirective (string directive, IDictionary atts)
    {
      if (String.Compare ("MasterType", directive, StringComparison.OrdinalIgnoreCase) == 0) {
        PageParserFilter pfilter = PageParserFilter;
        if (pfilter != null)
          pfilter.PreprocessDirective (directive.ToLowerInvariant (), atts);
        
        string type = GetString (atts, "TypeName", null);
        if (type != null) {
          masterType = LoadType (type);
          if (masterType == null)
            ThrowParseException ("Could not load type '" + type + "'.");
        } else {
          string path = GetString (atts, "VirtualPath", null);
          if (!String.IsNullOrEmpty (path)) {
            if (!HostingEnvironment.VirtualPathProvider.FileExists (path))
              ThrowParseFileNotFound (path);
            
            masterTypeVirtualPath = path;
            AddDependency (path);
          } else
            ThrowParseException ("The MasterType directive must have either a TypeName or a VirtualPath attribute.");
        }
        if (masterType != null)
          AddAssembly (masterType.Assembly, true);
      }
      else
        base.AddDirective (directive, atts);
    }

    internal void AddContentPlaceHolderId (string id)
    {
      if (contentPlaceHolderIds == null) {
        contentPlaceHolderIds = new List <string> (1);
        HttpRuntime.InternalCache.Insert (cacheEntryName, contentPlaceHolderIds);
      }
      
      contentPlaceHolderIds.Add (id);
    }
    
    internal Type MasterType {
      get {
        if (masterType == null && !String.IsNullOrEmpty (masterTypeVirtualPath))
          masterType = BuildManager.GetCompiledType (masterTypeVirtualPath);
        
        return masterType;
      }
    }

    internal override string DefaultBaseTypeName {
      get { return "System.Web.UI.MasterPage"; }
    }

    internal override string DefaultDirectiveName {
      get { return "master"; }
    }
  }
}