1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
//
// ISelectionSurroundingProvider.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2012 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;
namespace Mono.TextEditor
{
/// <summary>
/// A selection surrounding provider handles a special handling how the text editor behaves when the user
/// types a key with a selection. The selection can be surrounded instead of beeing replaced.
/// </summary>
public interface ISelectionSurroundingProvider
{
/// <summary>
/// Gets the selection surroundings for a given unicode key.
/// </summary>
/// <returns>
/// true, if the key is valid for a surrounding action.
/// </returns>
/// <param name='unicodeKey'>
/// The key to handle.
/// </param>
/// <param name='start'>
/// The start of the surrounding
/// </param>
/// <param name='end'>
/// The end of the surrounding
/// </param>
bool GetSelectionSurroundings (TextEditorData textEditorData, uint unicodeKey, out string start, out string end);
void HandleSpecialSelectionKey (TextEditorData textEditorData, uint unicodeKey);
}
/// <summary>
/// Null selection surrounding provider. Basically turns off that feature.
/// </summary>
public sealed class NullSelectionSurroundingProvider : ISelectionSurroundingProvider
{
public bool GetSelectionSurroundings (TextEditorData textEditorData, uint unicodeKey, out string start, out string end)
{
start = end = "";
return false;
}
public void HandleSpecialSelectionKey (TextEditorData textEditorData, uint unicodeKey)
{
throw new NotSupportedException ();
}
}
/// <summary>
/// Default selection surrounding provider.
/// </summary>
public class DefaultSelectionSurroundingProvider : ISelectionSurroundingProvider
{
public virtual bool GetSelectionSurroundings (TextEditorData textEditorData, uint unicodeKey, out string start, out string end)
{
switch ((char)unicodeKey) {
case '"':
start = end = "\"";
return true;
case '\'':
start = end = "'";
return true;
case '(':
start = "(";
end = ")";
return true;
case '<':
start = "<";
end = ">";
return true;
case '[':
start = "[";
end = "]";
return true;
case '{':
start = "{";
end = "}";
return true;
default:
start = end = "";
return false;
}
}
public virtual void HandleSpecialSelectionKey (TextEditorData textEditorData,uint unicodeKey)
{
string start, end;
GetSelectionSurroundings (textEditorData, unicodeKey, out start, out end);
if (textEditorData.MainSelection.SelectionMode == SelectionMode.Block) {
var selection = textEditorData.MainSelection;
int startCol = System.Math.Min (selection.Anchor.Column, selection.Lead.Column) - 1;
int endCol = System.Math.Max (selection.Anchor.Column, selection.Lead.Column);
for (int lineNumber = selection.MinLine; lineNumber <= selection.MaxLine; lineNumber++) {
DocumentLine lineSegment = textEditorData.GetLine (lineNumber);
if (lineSegment.Offset + startCol < lineSegment.EndOffset)
textEditorData.Insert (lineSegment.Offset + startCol, start);
if (lineSegment.Offset + endCol < lineSegment.EndOffset)
textEditorData.Insert (lineSegment.Offset + endCol, end);
}
textEditorData.MainSelection = new Selection (
new DocumentLocation (selection.Anchor.Line, endCol == selection.Anchor.Column ? endCol + start.Length : startCol + 1 + start.Length),
new DocumentLocation (selection.Lead.Line, endCol == selection.Anchor.Column ? startCol + 1 + start.Length : endCol + start.Length),
Mono.TextEditor.SelectionMode.Block);
textEditorData.Document.CommitMultipleLineUpdate (textEditorData.MainSelection.MinLine, textEditorData.MainSelection.MaxLine);
} else {
int anchorOffset = textEditorData.MainSelection.GetAnchorOffset (textEditorData);
int leadOffset = textEditorData.MainSelection.GetLeadOffset (textEditorData);
if (leadOffset < anchorOffset) {
int tmp = anchorOffset;
anchorOffset = leadOffset;
leadOffset = tmp;
}
textEditorData.Insert (anchorOffset, start);
textEditorData.Insert (leadOffset >= anchorOffset ? leadOffset + start.Length : leadOffset, end);
textEditorData.SetSelection (anchorOffset + start.Length, leadOffset + start.Length);
}
}
}
}
|