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//
// AbstractEditorExtension.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2014 Xamarin Inc. (http://xamarin.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;
using MonoDevelop.Components.Commands;
using MonoDevelop.Core;
using MonoDevelop.Ide.Editor;
using MonoDevelop.Ide.Gui;
using MonoDevelop.Ide.TypeSystem;
namespace MonoDevelop.Ide.Editor.Extension
{
public abstract class TextEditorExtension : ICommandRouter, IDisposable
{
public DocumentContext DocumentContext {
get;
protected set;
}
public TextEditor Editor {
get;
protected set;
}
internal TextEditorExtension Next {
get;
set;
}
protected internal void Initialize (TextEditor editor, DocumentContext context)
{
if (editor == null)
throw new ArgumentNullException ("editor");
if (context == null)
throw new ArgumentNullException ("context");
if (DocumentContext != null)
throw new InvalidOperationException ("Extension is already initialized.");
DocumentContext = context;
Editor = editor;
Initialize ();
}
protected virtual void Initialize ()
{
}
public virtual bool IsValidInContext (DocumentContext context)
{
return true;
}
/// <summary>
/// Return true if the key press should be processed by the editor.
/// When a key is pressed, and before the key is processed by the editor, this method will be invoked.
/// </summary>
public virtual bool KeyPress (KeyDescriptor descriptor)
{
return Next == null || Next.KeyPress (descriptor);
}
public virtual void Dispose ()
{
}
void CheckInitialized ()
{
if (DocumentContext == null)
throw new InvalidOperationException ("Editor extension not yet initialized");
}
object ICommandRouter.GetNextCommandTarget ()
{
return Next;
}
}
class TextEditorExtensionMarker : TextEditorExtension
{
public override bool IsValidInContext (DocumentContext context)
{
return false;
}
}
}
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