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
|
// Copyright (c) 2009 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 APP_TABLE_MODEL_H_
#define APP_TABLE_MODEL_H_
#include <string>
#include <vector>
#include "base/logging.h"
#include "unicode/coll.h"
class SkBitmap;
class TableModelObserver;
// The model driving the TableView.
class TableModel {
public:
// See HasGroups, get GetGroupID for details as to how this is used.
struct Group {
// The title text for the group.
std::wstring title;
// Unique id for the group.
int id;
};
typedef std::vector<Group> Groups;
// Number of rows in the model.
virtual int RowCount() = 0;
// Returns the value at a particular location in text.
virtual std::wstring GetText(int row, int column_id) = 0;
// Returns the small icon (16x16) that should be displayed in the first
// column before the text. This is only used when the TableView was created
// with the ICON_AND_TEXT table type. Returns an isNull() bitmap if there is
// no bitmap.
virtual SkBitmap GetIcon(int row);
// Sets whether a particular row is checked. This is only invoked
// if the TableView was created with show_check_in_first_column true.
virtual void SetChecked(int row, bool is_checked) {
NOTREACHED();
}
// Returns whether a particular row is checked. This is only invoked
// if the TableView was created with show_check_in_first_column true.
virtual bool IsChecked(int row) {
return false;
}
// Returns true if the TableView has groups. Groups provide a way to visually
// delineate the rows in a table view. When groups are enabled table view
// shows a visual separator for each group, followed by all the rows in
// the group.
//
// On win2k a visual separator is not rendered for the group headers.
virtual bool HasGroups() { return false; }
// Returns the groups.
// This is only used if HasGroups returns true.
virtual Groups GetGroups() {
// If you override HasGroups to return true, you must override this as
// well.
NOTREACHED();
return std::vector<Group>();
}
// Returns the group id of the specified row.
// This is only used if HasGroups returns true.
virtual int GetGroupID(int row) {
// If you override HasGroups to return true, you must override this as
// well.
NOTREACHED();
return 0;
}
// Sets the observer for the model. The TableView should NOT take ownership
// of the observer.
virtual void SetObserver(TableModelObserver* observer) = 0;
// Compares the values in the column with id |column_id| for the two rows.
// Returns a value < 0, == 0 or > 0 as to whether the first value is
// <, == or > the second value.
//
// This implementation does a case insensitive locale specific string
// comparison.
virtual int CompareValues(int row1, int row2, int column_id);
// Reset the collator.
void ClearCollator();
protected:
virtual ~TableModel() {}
// Returns the collator used by CompareValues.
icu::Collator* GetCollator();
};
// TableColumn specifies the title, alignment and size of a particular column.
struct TableColumn {
enum Alignment {
LEFT, RIGHT, CENTER
};
TableColumn();
TableColumn(int id, const std::wstring& title,
Alignment alignment, int width);
TableColumn(int id, const std::wstring& title,
Alignment alignment, int width, float percent);
// It's common (but not required) to use the title's IDS_* tag as the column
// id. In this case, the provided conveniences look up the title string on
// bahalf of the caller.
TableColumn(int id, Alignment alignment, int width);
TableColumn(int id, Alignment alignment, int width, float percent);
// A unique identifier for the column.
int id;
// The title for the column.
std::wstring title;
// Alignment for the content.
Alignment alignment;
// The size of a column may be specified in two ways:
// 1. A fixed width. Set the width field to a positive number and the
// column will be given that width, in pixels.
// 2. As a percentage of the available width. If width is -1, and percent is
// > 0, the column is given a width of
// available_width * percent / total_percent.
// 3. If the width == -1 and percent == 0, the column is autosized based on
// the width of the column header text.
//
// Sizing is done in four passes. Fixed width columns are given
// their width, percentages are applied, autosized columns are autosized,
// and finally percentages are applied again taking into account the widths
// of autosized columns.
int width;
float percent;
// The minimum width required for all items in this column
// (including the header)
// to be visible.
int min_visible_width;
// Is this column sortable? Default is false
bool sortable;
};
#endif // APP_TABLE_MODEL_H_
|
