HomeEndKeys.cs


1:	// HomeEndKeys.cs
2:	// Copyright (C) 2000 Mike Krueger
3:	// Copyright (C) 2000 Andrea Paatz
4:	//
5:	// This program is free software; you can redistribute it and/or modify
6:	// it under the terms of the GNU General Public License as published by
7:	// the Free Software Foundation; either version 2 of the License, or
8:	// (at your option) any later version.
9:	//
10:	// This program is distributed in the hope that it will be useful,
11:	// but WITHOUT ANY WARRANTY; without even the implied warranty of
12:	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13:	// GNU General Public License for more details.
14:	//
15:	// You should have received a copy of the GNU General Public License
16:	// along with this program; if not, write to the Free Software
17:	// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18:
19:	using System;
20:	using System.Drawing;
21:	using System.Windows.Forms;
22:
23:	using SharpDevelop.DefaultEditor.Gui.Editor;
24:	using SharpDevelop.DefaultEditor.Text;
25:
26:	namespace SharpDevelop.DefaultEditor.Actions {
27:
28:	public class Home : AbstractEditAction
29:	{
30:	public override void Execute(IEditActionServices services)
31:	{
32:	LineSegment curLine = services.Document.GetLineSegmentOfOffset(services.Document.Caret.Offset);
33:
34:	if (TextUtilities.IsEmptyLine(services.Document, curLine)) {
35:	if (services.Document.Caret.Offset != curLine.Offset) {
36:	services.Document.Caret.Offset = curLine.Offset;
37:	} else if (curLine.Length > 0) {
38:	services.Document.Caret.Offset = curLine.Offset + curLine.Length;
39:	}
40:	} else {
41:	int firstCharOffset = TextUtilities.GetFirstNonWSChar(services.Document, curLine.Offset);
42:
43:	if (services.Document.Caret.Offset == firstCharOffset) {
44:	if (services.Document.Caret.Offset != curLine.Offset) {
45:	services.Document.Caret.Offset = curLine.Offset;
46:	}
47:	} else {
48:	services.Document.Caret.Offset = firstCharOffset;
49:	}
50:	}
51:
52:	services.Document.SetDesiredColumn();
53:	}
54:	}
55:
56:
57:	public class End : AbstractEditAction
58:	{
59:	public override void Execute(IEditActionServices services)
60:	{
61:	LineSegment curLine = services.Document.GetLineSegmentOfOffset(services.Document.Caret.Offset);
62:	services.Document.Caret.Offset = curLine.Offset + curLine.Length;
63:	services.Document.SetDesiredColumn();
64:	}
65:	}
66:
67:
68:	public class MoveToStart : AbstractEditAction
69:	{
70:	public override void Execute(IEditActionServices services)
71:	{
72:	services.Document.Caret.Offset = 0;
73:	services.Document.SetDesiredColumn();
74:	}
75:	}
76:
77:
78:	public class MoveToEnd : AbstractEditAction
79:	{
80:	public override void Execute(IEditActionServices services)
81:	{
82:	services.Document.Caret.Offset = services.Document.TextLength;
83:	services.Document.SetDesiredColumn();
84:	}
85:	}
86:	}