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//
// ITextEditorResolver.cs
//
// Author:
// Mike Krüger <mkrueger@novell.com>
//
// Copyright (C) 2009 Novell, Inc (http://www.novell.com)
//
// 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.Collections.Generic;
using System.Linq;
using Mono.Addins;
using Microsoft.CodeAnalysis;
using MonoDevelop.Ide.Editor;
namespace MonoDevelop.Ide.Gui.Content
{
public interface ITextEditorResolver
{
ISymbol GetLanguageItem (int offset);
ISymbol GetLanguageItem (int offset, string expression);
}
public interface ITextEditorResolverProvider
{
ISymbol GetLanguageItem (Document document, int offset, out DocumentRegion expressionRegion);
ISymbol GetLanguageItem (Document document, int offset, string identifier);
}
public static class TextEditorResolverService
{
static List<TextEditorResolverProviderCodon> providers = new List<TextEditorResolverProviderCodon> ();
static TextEditorResolverService ()
{
AddinManager.AddExtensionNodeHandler ("/MonoDevelop/Ide/TextEditorResolver", delegate(object sender, ExtensionNodeEventArgs args) {
switch (args.Change) {
case ExtensionChange.Add:
providers.Add ((TextEditorResolverProviderCodon) args.ExtensionNode);
break;
case ExtensionChange.Remove:
providers.Remove ((TextEditorResolverProviderCodon) args.ExtensionNode);
break;
}
});
}
public static ITextEditorResolverProvider GetProvider (string mimeType)
{
TextEditorResolverProviderCodon codon = providers.FirstOrDefault (p => p.MimeType == mimeType);
if (codon == null)
return null;
return codon.CreateResolver ();
}
public static ISymbol GetLanguageItem (this Document document, int offset, out DocumentRegion expressionRegion)
{
if (document == null)
throw new System.ArgumentNullException ("document");
var textEditorResolver = TextEditorResolverService.GetProvider (document.Editor.MimeType);
if (textEditorResolver != null) {
return textEditorResolver.GetLanguageItem (document, offset, out expressionRegion);
}
expressionRegion = DocumentRegion.Empty;
return null;
}
}
[ExtensionNode (Description="A codon for text editor providers.")]
public class TextEditorResolverProviderCodon : ExtensionNode
{
[NodeAttribute("mimeType", "Mime type for this text editor provider")]
string mimeType = null;
[NodeAttribute("class", "Class name.")]
string className = null;
public string MimeType {
get { return this.mimeType; }
}
public ITextEditorResolverProvider CreateResolver ()
{
return (ITextEditorResolverProvider) Addin.CreateInstance (className, true);
}
}
}
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