CursorKeys.cs


0:	// CursorKeys.cs
1:	// Copyright (C) 2000 Mike Krueger
2:	// Copyright (C) 2000 Andrea Paatz
3:	//
4:	// This program is free software; you can redistribute it and/or modify
5:	// it under the terms of the GNU General Public License as published by
6:	// the Free Software Foundation; either version 2 of the License, or
7:	// (at your option) any later version.
8:	//
9:	// This program is distributed in the hope that it will be useful,
10:	// but WITHOUT ANY WARRANTY; without even the implied warranty of
11:	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12:	// GNU General Public License for more details.
13:	//
14:	// You should have received a copy of the GNU General Public License
15:	// along with this program; if not, write to the Free Software
16:	// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17:
18:	using System.Drawing;
19:	using System.Windows.Forms;
20:	using System;
21:
22:	using SharpDevelop.Gui.Edit.Text;
23:	using SharpDevelop.Actions;
24:
25:	namespace SharpDevelop.Actions.Edit {
26:
27:	public class CaretLeft : ISdEditAction
28:	{
29:	public virtual void Execute(ISdEditActionExecutor executor)
30:	{
31:	Point caretpos = executor.TextArea.Caret.CaretPos;
32:	if (caretpos.X > 0) {
33:	--caretpos.X;
34:	} else {
35:	if (caretpos.Y > 0) {
36:	caretpos.Y = executor.TextArea.Caret.GetFirstValidPosLower(caretpos.Y);
37:	caretpos.X = executor.TextArea.Buffer[caretpos.Y].Text.Length;
38:	}
39:	}
40:	if (caretpos.Y != -1) {
41:	executor.TextArea.Caret.CaretPos = caretpos;
42:	executor.TextArea.Caret.SetUpDownPos();
43:	}
44:	}
45:	}
46:
47:	public class CaretRight : ISdEditAction
48:	{
49:
50:	public virtual void Execute(ISdEditActionExecutor executor)
51:	{
52:	Point caretpos = executor.TextArea.Caret.CaretPos;
53:	if (executor.TextArea.Options.CursorBehindEOL \|\| caretpos.X < executor.TextArea.Buffer[caretpos.Y].Text.Length) {
54:	++caretpos.X;
55:	} else {
56:	if (caretpos.Y < executor.TextArea.Buffer.Length - 1) {
57:	caretpos.Y = executor.TextArea.Caret.GetFirstValidPosGreater(caretpos.Y);
58:	caretpos.X = 0;
59:	}
60:	}
61:	if (caretpos.Y != -1) {
62:	executor.TextArea.Caret.CaretPos = caretpos;
63:	executor.TextArea.Caret.SetUpDownPos();
64:	}
65:	}
66:	}
67:
68:
69:	public class CaretUp : ISdEditAction
70:	{
71:
72:	public virtual void Execute(ISdEditActionExecutor executor)
73:	{
74:	Point caretpos = executor.TextArea.Caret.CaretPos;
75:	caretpos.Y = Math.Max(0, executor.TextArea.Caret.GetFirstValidPosLower(caretpos.Y));
76:	caretpos.X = executor.TextArea.Caret.UpDownPos;
77:
78:	// if (caretpos != executor.TextArea.Caret.PhysicalCaretPos)
79:	if (caretpos.Y != -1)
80:	executor.TextArea.Caret.PhysicalCaretPos = caretpos;
81:	}
82:
83:	}
84:
85:	public class CaretDown : ISdEditAction
86:	{
87:	public virtual void Execute(ISdEditActionExecutor executor)
88:	{
89:	Point caretpos = executor.TextArea.Caret.CaretPos;
90:	caretpos.Y = Math.Min(executor.TextArea.Caret.GetFirstValidPosGreater(caretpos.Y),
91:	executor.TextArea.Caret.GetFirstValidPosLower(executor.TextArea.Buffer.Length));
92:	caretpos.X = executor.TextArea.Caret.UpDownPos;
93:
94:	if (caretpos.Y != -1) {
95:	if (caretpos != executor.TextArea.Caret.PhysicalCaretPos)
96:	executor.TextArea.Caret.PhysicalCaretPos = caretpos;
97:	}
98:	}
99:	}
100:
101:
102:	public class ShiftCaretRight : CaretRight
103:	{
104:	public override void Execute(ISdEditActionExecutor executor)
105:	{
106:	Point oldpos = executor.TextArea.Caret.CaretPos;
107:	executor.TextArea.ClearSelectionMove = false;
108:	base.Execute(executor);
109:	executor.TextArea.ClearSelectionMove = true;
110:	executor.TextArea.Selection.SetSelectionEnd(oldpos, executor.TextArea.Caret.CaretPos);
111:	}
112:	}
113:
114:	public class ShiftCaretLeft : CaretLeft
115:	{
116:	public override void Execute(ISdEditActionExecutor executor)
117:	{
118:	Point oldpos = executor.TextArea.Caret.CaretPos;
119:	executor.TextArea.ClearSelectionMove = false;
120:	base.Execute(executor);
121:	executor.TextArea.ClearSelectionMove = true;
122:	executor.TextArea.Selection.SetSelectionEnd(oldpos, executor.TextArea.Caret.CaretPos);
123:	}
124:	}
125:
126:	public class ShiftCaretUp : CaretUp
127:	{
128:	public override void Execute(ISdEditActionExecutor executor)
129:	{
130:	Point oldpos = executor.TextArea.Caret.CaretPos;
131:	executor.TextArea.ClearSelectionMove = false;
132:	base.Execute(executor);
133:	executor.TextArea.ClearSelectionMove = true;
134:	executor.TextArea.Selection.SetSelectionEnd(oldpos, executor.TextArea.Caret.CaretPos);
135:	}
136:	}
137:
138:	public class ShiftCaretDown : CaretDown
139:	{
140:	public override void Execute(ISdEditActionExecutor executor)
141:	{
142:	Point oldpos = executor.TextArea.Caret.CaretPos;
143:	executor.TextArea.ClearSelectionMove = false;
144:	base.Execute(executor);
145:	executor.TextArea.ClearSelectionMove = true;
146:	executor.TextArea.Selection.SetSelectionEnd(oldpos, executor.TextArea.Caret.CaretPos);
147:	}
148:	}
149:
150:
151:	public class ScrollLineUp : ISdEditAction
152:	{
153:	public void Execute(ISdEditActionExecutor executor)
154:	{
155:	executor.TextArea.SetScrollTo(Math.Max(0, executor.TextArea.GetFirstLine() - 1));
156:	}
157:	}
158:
159:	public class ScrollLineDown : ISdEditAction
160:	{
161:	public void Execute(ISdEditActionExecutor executor)
162:	{
163:	executor.TextArea.SetScrollTo(Math.Min(executor.TextArea.GetMaxScroll(), executor.TextArea.GetFirstLine() + 1));
164:	}
165:	}
166:
167:	public class WordRight : ISdEditAction
168:	{
169:	public virtual void Execute(ISdEditActionExecutor executor)
170:	{
171:	Point caretpos = executor.TextArea.Caret.CaretPos;
172:	if (caretpos.X == executor.TextArea.Buffer[caretpos.Y].Text.Length &&
173:	caretpos.Y == executor.TextArea.Buffer.Length - 1)
174:	return;
175:	if (caretpos.X == executor.TextArea.Buffer[caretpos.Y].Text.Length) {
176:	caretpos.X = 0;
177:	caretpos.Y = Math.Min(executor.TextArea.Caret.GetFirstValidPosGreater(caretpos.Y),
178:	executor.TextArea.Caret.GetFirstValidPosLower(executor.TextArea.Buffer.Length));
179:	} else {
180:	int i = caretpos.X;
181:
182:	while (i < executor.TextArea.Buffer[caretpos.Y].Text.Length && Char.IsLetterOrDigit(executor.TextArea.Buffer[caretpos.Y].Text[i]))
183:	++i;
184:
185:	while (i < executor.TextArea.Buffer[caretpos.Y].Text.Length && !Char.IsLetterOrDigit(executor.TextArea.Buffer[caretpos.Y].Text[i]))
186:	++i;
187:
188:	caretpos.X = i;
189:	}
190:	executor.TextArea.Caret.CaretPos = caretpos;
191:	executor.TextArea.Caret.SetUpDownPos();
192:	}
193:	}
194:
195:	public class WordLeft : ISdEditAction
196:	{
197:	public virtual void Execute(ISdEditActionExecutor executor)
198:	{
199:	Point caretpos = executor.TextArea.Caret.CaretPos;
200:	if (caretpos.X == 0 && caretpos.Y == 0)
201:	return;
202:	if (caretpos.X == 0){
203:	caretpos.Y = executor.TextArea.Caret.GetFirstValidPosLower(caretpos.Y);
204:	caretpos.X = executor.TextArea.Buffer[caretpos.Y].Text.Length;
205:	} else {
206:	int i = caretpos.X;
207:
208:	while (i > 0 && !Char.IsLetterOrDigit(executor.TextArea.Buffer[caretpos.Y].Text[i - 1]))
209:	--i;
210:
211:	while (i > 0 && Char.IsLetterOrDigit(executor.TextArea.Buffer[caretpos.Y].Text[i - 1]))
212:	--i;
213:
214:	caretpos.X = i;
215:	}
216:	executor.TextArea.Caret.CaretPos = caretpos;
217:	executor.TextArea.Caret.SetUpDownPos();
218:	}
219:	}
220:
221:	public class ShiftWordRight : WordRight
222:	{
223:	public override void Execute(ISdEditActionExecutor executor)
224:	{
225:	Point oldpos = executor.TextArea.Caret.CaretPos;
226:	executor.TextArea.ClearSelectionMove = false;
227:	base.Execute(executor);
228:	executor.TextArea.ClearSelectionMove = true;
229:	executor.TextArea.Selection.SetSelectionEnd(oldpos, executor.TextArea.Caret.CaretPos);
230:	}
231:	}
232:
233:	public class ShiftWordLeft : WordLeft
234:	{
235:	public override void Execute(ISdEditActionExecutor executor)
236:	{
237:	Point oldpos = executor.TextArea.Caret.CaretPos;
238:	executor.TextArea.ClearSelectionMove = false;
239:	base.Execute(executor);
240:	executor.TextArea.ClearSelectionMove = true;
241:	executor.TextArea.Selection.SetSelectionEnd(oldpos, executor.TextArea.Caret.CaretPos);
242:	}
243:	}
244:	}