#region Disclaimer / License
// Copyright (C) 2012, Jackie Ng
// http://trac.osgeo.org/mapguide/wiki/maestro, jumpinjackie@gmail.com
//
// Original code from SharpDevelop 3.2.1 licensed under the same terms (LGPL 2.1)
// Copyright 2002-2010 by
//
// AlphaSierraPapa, Christoph Wille
// Vordernberger Strasse 27/8
// A-8700 Leoben
// Austria
//
// email: office@alphasierrapapa.com
// court of jurisdiction: Landesgericht Leoben
//
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
#endregion
using ICSharpCode.TextEditor;
using ICSharpCode.TextEditor.Document;
using ICSharpCode.TextEditor.Gui.CompletionWindow;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
namespace Maestro.AddIn.Scripting.Lang.Python
{
///
/// Provides code completion for the Python Console window.
///
internal class PythonConsoleCompletionDataProvider : ICompletionDataProvider
{
IMemberProvider memberProvider;
public PythonConsoleCompletionDataProvider(IMemberProvider memberProvider)
{
this.memberProvider = memberProvider;
this.DefaultIndex = 0;
this.PreSelection = null;
this.ImageList = new System.Windows.Forms.ImageList();
this.ImageList.Images.Add(Properties.Resources.block);
}
public ICompletionData[] GenerateCompletionData(string fileName, TextArea textArea, char charTyped)
{
return GenerateCompletionData(GetLineText(textArea));
}
///
/// Generates completion data for the specified text. The text should be everything before
/// the dot character that triggered the completion. The text can contain the command line prompt
/// '>>>' as this will be ignored.
///
public ICompletionData[] GenerateCompletionData(string line)
{
List items = new List();
string name = GetName(line);
if (!String.IsNullOrEmpty(name))
{
try
{
//TODO: It would be nice if we could get extra information besides the name. I'm not sure
//if the DLR hosting API can give us anymore information
foreach (string member in memberProvider.GetMemberNames(name))
{
items.Add(new DefaultCompletionData(member, String.Empty, 0)); //ClassBrowserIconService.MethodIndex));
}
}
catch
{
// Do nothing.
}
}
return items.ToArray();
}
string GetName(string text)
{
//Assume compacted expressions, meaning we need to take into account operators and non-whitespace tokens
//TODO: Still imperfect. A dot after a function expression brings up nothing. But a dot after a named variable will
//trigger auto-complete most of the time
int startIndex = text.LastIndexOfAny(new char[] { ' ', '+', '/', '*', '-', '%', '=', '>', '<', '&', '|', '^', '~', '(', ')' });
string res = text.Substring(startIndex + 1);
Debug.WriteLine("Evaluating python auto-complete options for: " + res);
return res;
}
///
/// Gets the line of text up to the cursor position.
///
string GetLineText(TextArea textArea)
{
LineSegment lineSegment = textArea.Document.GetLineSegmentForOffset(textArea.Caret.Offset);
return textArea.Document.GetText(lineSegment);
}
public System.Windows.Forms.ImageList ImageList
{
get;
private set;
}
public string PreSelection
{
get;
private set;
}
public int DefaultIndex
{
get;
private set;
}
public bool InsertSpace
{
get;
set;
}
public CompletionDataProviderKeyResult ProcessKey(char key)
{
CompletionDataProviderKeyResult res;
if (key == ' ' && this.InsertSpace)
{
this.InsertSpace = false; // insert space only once
res = CompletionDataProviderKeyResult.BeforeStartKey;
}
else if (char.IsLetterOrDigit(key) || key == '_')
{
this.InsertSpace = false; // don't insert space if user types normally
res = CompletionDataProviderKeyResult.NormalKey;
}
else
{
// do not reset insertSpace when doing an insertion!
res = CompletionDataProviderKeyResult.InsertionKey;
}
return res;
}
public bool InsertAction(ICompletionData data, TextArea textArea, int insertionOffset, char key)
{
if (this.InsertSpace)
{
textArea.Document.Insert(insertionOffset++, " ");
}
textArea.Caret.Position = textArea.Document.OffsetToPosition(insertionOffset);
return data.InsertAction(textArea, key);
}
}
}