Move max_height method to tui_gen_win_info
[deliverable/binutils-gdb.git] / gdb / tui / tui-regs.h
1 /* TUI display registers in window.
2
3 Copyright (C) 1998-2019 Free Software Foundation, Inc.
4
5 Contributed by Hewlett-Packard Company.
6
7 This file is part of GDB.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21
22 #ifndef TUI_TUI_REGS_H
23 #define TUI_TUI_REGS_H
24
25 #include "tui/tui-data.h"
26
27 /* A data item window. */
28
29 struct tui_data_item_window : public tui_gen_win_info
30 {
31 tui_data_item_window ()
32 : tui_gen_win_info (DATA_ITEM_WIN)
33 {
34 }
35
36 DISABLE_COPY_AND_ASSIGN (tui_data_item_window);
37
38 tui_data_item_window (tui_data_item_window &&) = default;
39
40 void rerender () override;
41
42 void refresh_window () override;
43
44 int max_height () const override
45 {
46 return 1;
47 }
48
49 const char *name = nullptr;
50 /* The register number, or data display number. */
51 int item_no = -1;
52 bool highlight = false;
53 gdb::unique_xmalloc_ptr<char> content;
54 };
55
56 /* The TUI registers window. */
57 struct tui_data_window : public tui_win_info
58 {
59 tui_data_window ()
60 : tui_win_info (DATA_WIN)
61 {
62 }
63
64 DISABLE_COPY_AND_ASSIGN (tui_data_window);
65
66 void refresh_window () override;
67
68 const char *name () const override
69 {
70 return DATA_NAME;
71 }
72
73 void check_register_values (struct frame_info *frame);
74
75 void show_registers (struct reggroup *group);
76
77 struct reggroup *get_current_group () const
78 {
79 return m_current_group;
80 }
81
82 protected:
83
84 void do_scroll_vertical (int num_to_scroll) override;
85 void do_scroll_horizontal (int num_to_scroll) override
86 {
87 }
88
89 void rerender () override;
90
91 private:
92
93 /* Display the registers in the content from 'start_element_no'
94 until the end of the register content or the end of the display
95 height. No checking for displaying past the end of the registers
96 is done here. */
97 void display_registers_from (int start_element_no);
98
99 /* Display the registers starting at line line_no in the data
100 window. Answers the line number that the display actually
101 started from. If nothing is displayed (-1) is returned. */
102 int display_registers_from_line (int line_no);
103
104 /* Return the index of the first element displayed. If none are
105 displayed, then return -1. */
106 int first_data_item_displayed ();
107
108 /* Display the registers in the content from 'start_element_no' on
109 'start_line_no' until the end of the register content or the end
110 of the display height. This function checks that we won't
111 display off the end of the register display. */
112 void display_reg_element_at_line (int start_element_no, int start_line_no);
113
114 void show_register_group (struct reggroup *group,
115 struct frame_info *frame,
116 bool refresh_values_only);
117
118 /* Answer the number of the last line in the regs display. If there
119 are no registers (-1) is returned. */
120 int last_regs_line_no () const;
121
122 /* Answer the line number that the register element at element_no is
123 on. If element_no is greater than the number of register
124 elements there are, -1 is returned. */
125 int line_from_reg_element_no (int element_no) const;
126
127 /* Answer the index of the first element in line_no. If line_no is
128 past the register area (-1) is returned. */
129 int first_reg_element_no_inline (int line_no) const;
130
131 /* Delete all the item windows in the data window. This is usually
132 done when the data window is scrolled. */
133 void delete_data_content_windows ();
134
135 void erase_data_content (const char *prompt);
136
137 /* Windows that are used to display registers. */
138 std::vector<tui_data_item_window> m_regs_content;
139 int m_regs_column_count = 0;
140 struct reggroup *m_current_group = nullptr;
141 };
142
143 #endif /* TUI_TUI_REGS_H */
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