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Root/tags/2.0/i386/config/inputbox.c

Source at commit 1808 created 12 years 3 months ago.
By blackosx, Revise layout of package installer 'Welcome' file so it looks cleaner. Change the copyright notice to begin from 2009 as seen in the Chameleon 2.0 r431 installer. Should this date be set earlier?
1/*␊
2 * inputbox.c -- implements the input box␊
3 *␊
4 * ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)␊
5 * MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)␊
6 *␊
7 * This program is free software; you can redistribute it and/or␊
8 * modify it under the terms of the GNU General Public License␊
9 * as published by the Free Software Foundation; either version 2␊
10 * of the License, or (at your option) any later version.␊
11 *␊
12 * This program is distributed in the hope that it will be useful,␊
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of␊
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the␊
15 * GNU General Public License for more details.␊
16 *␊
17 * You should have received a copy of the GNU General Public License␊
18 * along with this program; if not, write to the Free Software␊
19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.␊
20 */␊
21␊
22#include "dialog.h"␊
23␊
24char dialog_input_result[MAX_LEN + 1];␊
25␊
26/*␊
27 * Print the termination buttons␊
28 */␊
29static void print_buttons(WINDOW * dialog, int height, int width, int selected)␊
30{␊
31␉int x = width / 2 - 11;␊
32␉int y = height - 2;␊
33␊
34␉print_button(dialog, gettext(" Ok "), y, x, selected == 0);␊
35␉print_button(dialog, gettext(" Help "), y, x + 14, selected == 1);␊
36␊
37␉wmove(dialog, y, x + 1 + 14 * selected);␊
38␉wrefresh(dialog);␊
39}␊
40␊
41/*␊
42 * Display a dialog box for inputing a string␊
43 */␊
44int dialog_inputbox(const char *title, const char *prompt, int height, int width,␊
45 const char *init)␊
46{␊
47␉int i, x, y, box_y, box_x, box_width;␊
48␉int input_x = 0, scroll = 0, key = 0, button = -1;␊
49␉char *instr = dialog_input_result;␊
50␉WINDOW *dialog;␊
51␊
52␉if (!init)␊
53␉␉instr[0] = '\0';␊
54␉else␊
55␉␉strcpy(instr, init);␊
56␊
57do_resize:␊
58␉if (getmaxy(stdscr) <= (height - 2))␊
59␉␉return -ERRDISPLAYTOOSMALL;␊
60␉if (getmaxx(stdscr) <= (width - 2))␊
61␉␉return -ERRDISPLAYTOOSMALL;␊
62␊
63␉/* center dialog box on screen */␊
64␉x = (COLS - width) / 2;␊
65␉y = (LINES - height) / 2;␊
66␊
67␉draw_shadow(stdscr, y, x, height, width);␊
68␊
69␉dialog = newwin(height, width, y, x);␊
70␉keypad(dialog, TRUE);␊
71␊
72␉draw_box(dialog, 0, 0, height, width,␊
73␉␉ dlg.dialog.atr, dlg.border.atr);␊
74␉wattrset(dialog, dlg.border.atr);␊
75␉mvwaddch(dialog, height - 3, 0, ACS_LTEE);␊
76␉for (i = 0; i < width - 2; i++)␊
77␉␉waddch(dialog, ACS_HLINE);␊
78␉wattrset(dialog, dlg.dialog.atr);␊
79␉waddch(dialog, ACS_RTEE);␊
80␊
81␉print_title(dialog, title, width);␊
82␊
83␉wattrset(dialog, dlg.dialog.atr);␊
84␉print_autowrap(dialog, prompt, width - 2, 1, 3);␊
85␊
86␉/* Draw the input field box */␊
87␉box_width = width - 6;␊
88␉getyx(dialog, y, x);␊
89␉box_y = y + 2;␊
90␉box_x = (width - box_width) / 2;␊
91␉draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,␊
92␉␉ dlg.dialog.atr, dlg.border.atr);␊
93␊
94␉print_buttons(dialog, height, width, 0);␊
95␊
96␉/* Set up the initial value */␊
97␉wmove(dialog, box_y, box_x);␊
98␉wattrset(dialog, dlg.inputbox.atr);␊
99␊
100␉input_x = strlen(instr);␊
101␊
102␉if (input_x >= box_width) {␊
103␉␉scroll = input_x - box_width + 1;␊
104␉␉input_x = box_width - 1;␊
105␉␉for (i = 0; i < box_width - 1; i++)␊
106␉␉␉waddch(dialog, instr[scroll + i]);␊
107␉} else {␊
108␉␉waddstr(dialog, instr);␊
109␉}␊
110␊
111␉wmove(dialog, box_y, box_x + input_x);␊
112␊
113␉wrefresh(dialog);␊
114␊
115␉while (key != KEY_ESC) {␊
116␉␉key = wgetch(dialog);␊
117␊
118␉␉if (button == -1) {␉/* Input box selected */␊
119␉␉␉switch (key) {␊
120␉␉␉case TAB:␊
121␉␉␉case KEY_UP:␊
122␉␉␉case KEY_DOWN:␊
123␉␉␉␉break;␊
124␉␉␉case KEY_LEFT:␊
125␉␉␉␉continue;␊
126␉␉␉case KEY_RIGHT:␊
127␉␉␉␉continue;␊
128␉␉␉case KEY_BACKSPACE:␊
129␉␉␉case 127:␊
130␉␉␉␉if (input_x || scroll) {␊
131␉␉␉␉␉wattrset(dialog, dlg.inputbox.atr);␊
132␉␉␉␉␉if (!input_x) {␊
133␉␉␉␉␉␉scroll = scroll < box_width - 1 ? 0 : scroll - (box_width - 1);␊
134␉␉␉␉␉␉wmove(dialog, box_y, box_x);␊
135␉␉␉␉␉␉for (i = 0; i < box_width; i++)␊
136␉␉␉␉␉␉␉waddch(dialog,␊
137␉␉␉␉␉␉␉ instr[scroll + input_x + i] ?␊
138␉␉␉␉␉␉␉ instr[scroll + input_x + i] : ' ');␊
139␉␉␉␉␉␉input_x = strlen(instr) - scroll;␊
140␉␉␉␉␉} else␊
141␉␉␉␉␉␉input_x--;␊
142␉␉␉␉␉instr[scroll + input_x] = '\0';␊
143␉␉␉␉␉mvwaddch(dialog, box_y, input_x + box_x, ' ');␊
144␉␉␉␉␉wmove(dialog, box_y, input_x + box_x);␊
145␉␉␉␉␉wrefresh(dialog);␊
146␉␉␉␉}␊
147␉␉␉␉continue;␊
148␉␉␉default:␊
149␉␉␉␉if (key < 0x100 && isprint(key)) {␊
150␉␉␉␉␉if (scroll + input_x < MAX_LEN) {␊
151␉␉␉␉␉␉wattrset(dialog, dlg.inputbox.atr);␊
152␉␉␉␉␉␉instr[scroll + input_x] = key;␊
153␉␉␉␉␉␉instr[scroll + input_x + 1] = '\0';␊
154␉␉␉␉␉␉if (input_x == box_width - 1) {␊
155␉␉␉␉␉␉␉scroll++;␊
156␉␉␉␉␉␉␉wmove(dialog, box_y, box_x);␊
157␉␉␉␉␉␉␉for (i = 0; i < box_width - 1; i++)␊
158␉␉␉␉␉␉␉␉waddch(dialog, instr [scroll + i]);␊
159␉␉␉␉␉␉} else {␊
160␉␉␉␉␉␉␉wmove(dialog, box_y, input_x++ + box_x);␊
161␉␉␉␉␉␉␉waddch(dialog, key);␊
162␉␉␉␉␉␉}␊
163␉␉␉␉␉␉wrefresh(dialog);␊
164␉␉␉␉␉} else␊
165␉␉␉␉␉␉flash();␉/* Alarm user about overflow */␊
166␉␉␉␉␉continue;␊
167␉␉␉␉}␊
168␉␉␉}␊
169␉␉}␊
170␉␉switch (key) {␊
171␉␉case 'O':␊
172␉␉case 'o':␊
173␉␉␉delwin(dialog);␊
174␉␉␉return 0;␊
175␉␉case 'H':␊
176␉␉case 'h':␊
177␉␉␉delwin(dialog);␊
178␉␉␉return 1;␊
179␉␉case KEY_UP:␊
180␉␉case KEY_LEFT:␊
181␉␉␉switch (button) {␊
182␉␉␉case -1:␊
183␉␉␉␉button = 1;␉/* Indicates "Help" button is selected */␊
184␉␉␉␉print_buttons(dialog, height, width, 1);␊
185␉␉␉␉break;␊
186␉␉␉case 0:␊
187␉␉␉␉button = -1;␉/* Indicates input box is selected */␊
188␉␉␉␉print_buttons(dialog, height, width, 0);␊
189␉␉␉␉wmove(dialog, box_y, box_x + input_x);␊
190␉␉␉␉wrefresh(dialog);␊
191␉␉␉␉break;␊
192␉␉␉case 1:␊
193␉␉␉␉button = 0;␉/* Indicates "OK" button is selected */␊
194␉␉␉␉print_buttons(dialog, height, width, 0);␊
195␉␉␉␉break;␊
196␉␉␉}␊
197␉␉␉break;␊
198␉␉case TAB:␊
199␉␉case KEY_DOWN:␊
200␉␉case KEY_RIGHT:␊
201␉␉␉switch (button) {␊
202␉␉␉case -1:␊
203␉␉␉␉button = 0;␉/* Indicates "OK" button is selected */␊
204␉␉␉␉print_buttons(dialog, height, width, 0);␊
205␉␉␉␉break;␊
206␉␉␉case 0:␊
207␉␉␉␉button = 1;␉/* Indicates "Help" button is selected */␊
208␉␉␉␉print_buttons(dialog, height, width, 1);␊
209␉␉␉␉break;␊
210␉␉␉case 1:␊
211␉␉␉␉button = -1;␉/* Indicates input box is selected */␊
212␉␉␉␉print_buttons(dialog, height, width, 0);␊
213␉␉␉␉wmove(dialog, box_y, box_x + input_x);␊
214␉␉␉␉wrefresh(dialog);␊
215␉␉␉␉break;␊
216␉␉␉}␊
217␉␉␉break;␊
218␉␉case ' ':␊
219␉␉case '\n':␊
220␉␉␉delwin(dialog);␊
221␉␉␉return (button == -1 ? 0 : button);␊
222␉␉case 'X':␊
223␉␉case 'x':␊
224␉␉␉key = KEY_ESC;␊
225␉␉␉break;␊
226␉␉case KEY_ESC:␊
227␉␉␉key = on_key_esc(dialog);␊
228␉␉␉break;␊
229␉␉case KEY_RESIZE:␊
230␉␉␉delwin(dialog);␊
231␉␉␉on_key_resize();␊
232␉␉␉goto do_resize;␊
233␉␉}␊
234␉}␊
235␊
236␉delwin(dialog);␊
237␉return KEY_ESC;␉␉/* ESC pressed */␊
238}␊
239

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