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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_VIEWS_MODEL_H_
#define VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_VIEWS_MODEL_H_
#pragma once
#include <vector>
#include "base/string16.h"
#include "gfx/rect.h"
#include "third_party/skia/include/core/SkColor.h"
namespace gfx {
class Font;
} // namespace gfx
namespace views {
// A model that represents a text content for TextfieldViews.
// It supports editing, selection and cursor manipulation.
class TextfieldViewsModel {
public:
TextfieldViewsModel();
virtual ~TextfieldViewsModel();
// Text fragment info. Used to draw selected text.
// We may replace this with TextAttribute class
// in the future to support multi-color text
// for omnibox.
struct TextFragment {
TextFragment(size_t b, size_t e, bool s)
: begin(b), end(e), selected(s) {
}
// The begin and end position of text fragment.
size_t begin, end;
// True if the text is selected.
bool selected;
};
typedef std::vector<TextFragment> TextFragments;
// Gets the text element info.
void GetFragments(TextFragments* elements) const;
void set_is_password(bool is_password) {
is_password_ = is_password;
}
const string16& text() const { return text_; }
// Edit related methods.
// Sest the text. Returns true if the text has been modified.
bool SetText(const string16& text);
// Inserts a character at the current cursor position.
void Insert(char16 c);
// Replaces the char at the current position with given character.
void Replace(char16 c);
// Appends the text.
void Append(const string16& text);
// Deletes the first character after the current cursor position (as if, the
// the user has pressed delete key in the textfield). Returns true if
// the deletion is successful.
bool Delete();
// Deletes the first character before the current cursor position (as if, the
// the user has pressed backspace key in the textfield). Returns true if
// the removal is successful.
bool Backspace();
// Cursor related methods.
// Returns the current cursor position.
size_t cursor_pos() const { return cursor_pos_; }
// Moves the cursor left by one position (as if, the user has pressed the left
// arrow key). If |select| is true, it updates the selection accordingly.
void MoveCursorLeft(bool select);
// Moves the cursor right by one position (as if, the user has pressed the
// right arrow key). If |select| is true, it updates the selection
// accordingly.
void MoveCursorRight(bool select);
// Moves the cursor left by one word (word boundry is defined by space).
// If |select| is true, it updates the selection accordingly.
void MoveCursorToPreviousWord(bool select);
// Moves the cursor right by one word (word boundry is defined by space).
// If |select| is true, it updates the selection accordingly.
void MoveCursorToNextWord(bool select);
// Moves the cursor to start of the textfield contents.
// If |select| is true, it updates the selection accordingly.
void MoveCursorToStart(bool select);
// Moves the cursor to end of the textfield contents.
// If |select| is true, it updates the selection accordingly.
void MoveCursorToEnd(bool select);
// Moves the cursor to the specified |position|.
// If |select| is true, it updates the selection accordingly.
bool MoveCursorTo(size_t position, bool select);
// Returns the bounds of character at the current cursor.
gfx::Rect GetCursorBounds(const gfx::Font& font) const;
// Selection related method
// Returns the selected text.
string16 GetSelectedText() const;
// Selects all text.
void SelectAll();
// Clears selection.
void ClearSelection();
// Returns visible text. If the field is password, it returns the
// sequence of "*".
string16 GetVisibleText() const {
return GetVisibleText(0U, text_.length());
}
// Cuts the currently selected text and puts it to clipboard. Returns true
// if text has changed after cutting.
bool Cut();
// Copies the currently selected text and puts it to clipboard.
void Copy();
// Pastes text from the clipboard at current cursor position. Returns true
// if text has changed after pasting.
bool Paste();
// Tells if any text is selected.
bool HasSelection() const;
private:
friend class NativeTextfieldViews;
// Deletes the selected text.
void DeleteSelection();
// Returns the visible text given |start| and |end|.
string16 GetVisibleText(size_t start, size_t end) const;
// The text in utf16 format.
string16 text_;
// Current cursor position.
size_t cursor_pos_;
// Selection range.
size_t selection_begin_;
// True if the text is the password.
bool is_password_;
DISALLOW_COPY_AND_ASSIGN(TextfieldViewsModel);
};
} // namespace views
#endif // VIEWS_CONTROLS_TEXTFIELD_TEXTFIELD_VIEWS_MODEL_H_
|
