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Viewing changes to src/addins/AspNetAddIn/MonoDevelop.Html/HtmlSchemaService.cs

  • Committer: Bazaar Package Importer
  • Author(s): Jo Shields
  • Date: 2009-02-18 08:40:51 UTC
  • mfrom: (1.2.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20090218084051-gh8m6ukvokbwj7cf
Tags: 1.9.2+dfsg-1ubuntu1
https://launchpad.net/bugs/330519
* Merge from Debian Experimental (LP: #330519), remaining Ubuntu changes:
  + debian/control:
    - Update for Gnome# 2.24
    - Add libmono-cairo1.0-cil to build-deps to fool pkg-config check

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src/addins/AspNetAddIn/MonoDevelop.Html/HtmlSchemaService.cs
 
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// 
 
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// HtmlSchemaService.cs
 
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// 
 
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// Author:
 
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//   Michael Hutchinson <mhutchinson@novell.com>
 
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// 
 
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// Copyright (C) 2008 Novell, Inc (http://www.novell.com)
 
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// 
 
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// Permission is hereby granted, free of charge, to any person obtaining
 
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// a copy of this software and associated documentation files (the
 
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// "Software"), to deal in the Software without restriction, including
 
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// without limitation the rights to use, copy, modify, merge, publish,
 
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// distribute, sublicense, and/or sell copies of the Software, and to
 
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// permit persons to whom the Software is furnished to do so, subject to
 
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// the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be
 
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// included in all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
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//
 
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using System;
 
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using System.Collections.Generic;
 
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using System.IO;
 
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using MonoDevelop.Core;
 
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using MonoDevelop.Projects.Gui.Completion;
 
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using MonoDevelop.XmlEditor.Completion;
 
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namespace MonoDevelop.Html
 
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{
 
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        public static class HtmlSchemaService
 
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        {
 
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                static Dictionary<string, HtmlSchema> schemas;
 
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                #region Service loading
 
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                static object initLock = new object ();
 
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                static System.Threading.Thread loadingThread;
 
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                public static void Initialise ()
 
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                {
 
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                        if (schemas != null)
 
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                                return;
 
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                        schemas = new Dictionary<string, HtmlSchema> ();
 
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                        //load all the schemas from addin points
 
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                        //NOTE: the first ([0]) schema must be the default schema (HTML4 transitional)
 
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                        string schemaDir = Path.GetDirectoryName (System.Reflection.Assembly.GetExecutingAssembly ().Location);
 
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                        schemaDir = Path.Combine (schemaDir, "Schemas");
 
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                        foreach (DocTypeExtensionNode node in Mono.Addins.AddinManager.GetExtensionNodes ("/MonoDevelop/Html/DocTypes")) {
 
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                                if (schemas.ContainsKey (node.Name))
 
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                                        LoggingService.LogWarning (
 
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                                            "HtmlSchemaService cannot register duplicate doctype with the name '{0}'", node.Name);
 
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                                if (!string.IsNullOrEmpty (node.XsdFile)) {
 
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                                        string path = Path.Combine (schemaDir, node.XsdFile);
 
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                                        try {
 
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                                                IXmlCompletionProvider provider = new XmlSchemaCompletionData (path);
 
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                                                schemas.Add (node.Name, new HtmlSchema (node.Name, node.FullName, provider));
 
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                                        } catch (Exception ex) {
 
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                                                LoggingService.LogWarning (
 
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                                                    "HtmlSchemaService encountered an error registering the schema '" + path + "'", ex);
 
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                                        }
 
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                                } else {
 
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                                        schemas.Add (node.Name, new HtmlSchema (node.Name, node.FullName, node.CompletionDocTypeName));
 
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                                }
 
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                        }
 
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                        //initialise the default backup schema if it doesn't exist already
 
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                        if (!schemas.ContainsKey (DefaultDocTypeName)) {
 
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                                HtmlSchema defaultSubstProvider = schemas["XHTML 1.0 Transitional"];
 
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                                IXmlCompletionProvider provider;
 
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                                if (defaultSubstProvider != null) {
 
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                                        //start the threaded schema loading
 
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                                        LoadSchema (defaultSubstProvider, true);
 
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                                        provider = defaultSubstProvider.CompletionProvider;
 
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                                } else {
 
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                                        LoggingService.LogWarning ("Completion schema for default HTML doctype not found.");
 
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                                        provider = new EmptyXmlCompletionProvider ();
 
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                                }
 
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                                schemas[DefaultDocTypeName] = new HtmlSchema ("HTML 4.01 Transitional",
 
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                                    "<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\"\n"
 
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                                    + "\"http://www.w3.org/TR/html4/loose.dtd\">",
 
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                                    provider);
 
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                        }
 
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                        MonoDevelop.Core.LoggingService.LogDebug ("HtmlSchemaService initialised");
 
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                }
 
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                #endregion
 
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                public static string DefaultDocTypeName {
 
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                        get { return "HTML 4.01 Transitional"; }
 
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                }
 
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                public static HtmlSchema DefaultDocType {
 
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                        get {
 
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                                if (schemas == null)
 
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                                        Initialise ();
 
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                                return schemas[DefaultDocTypeName];
 
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                        }
 
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                }
 
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                public static HtmlSchema GetSchema (string docType)
 
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                {
 
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                        return GetSchema (docType, false);
 
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                }
 
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                //if lazy==true, then if the schema is lazily compiled, it gets force-compiled in a thread and null is returned
 
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                public static HtmlSchema GetSchema (string docType, bool lazy)
 
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                {
 
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                        if (schemas == null)
 
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                                Initialise ();
 
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                        if (!string.IsNullOrEmpty (docType))
 
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                                foreach (HtmlSchema schema in schemas.Values)
 
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                                        if (docType.Contains (schema.Name))
 
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                                                return LoadSchema (schema, lazy);
 
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                        return null;
 
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                }
 
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                //if lazy == true, returns null if the schema isn't loaded yet
 
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                static HtmlSchema LoadSchema (HtmlSchema schema, bool lazy)
 
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                {
 
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                        ILazilyLoadedProvider lazyProv = schema.CompletionProvider as ILazilyLoadedProvider;
 
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                        if (lazyProv == null || lazyProv.IsLoaded) {
 
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                                return schema;
 
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                        } else {
 
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                                //FIXME: actually implement threaded loading and return null if loading && lazy
 
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                                lazyProv.EnsureLoaded ();
 
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                                return schema;
 
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                        }
 
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                }
 
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                public static IXmlCompletionProvider LazyGetProvider (HtmlSchema schema)
 
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                {
 
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                        //get the provided schema, if it's loaded
 
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                        HtmlSchema hs = LoadSchema (schema, true);
 
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                        //fall back to the defaul provider
 
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                        if (hs == null)
 
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                                hs = LoadSchema (DefaultDocType, true);
 
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                        //fall back to a blank provider
 
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                        return new EmptyXmlCompletionProvider ();
 
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                }
 
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                public static IEnumerable<DocTypeCompletionData> DocTypeCompletionData {
 
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                        get {
 
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                                if (schemas == null)
 
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                                        Initialise ();
 
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                                foreach (HtmlSchema item in schemas.Values)
 
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                                        yield return new DocTypeCompletionData (item.Name, item.DocType);
 
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                        }
 
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                }
 
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        }
 
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}