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Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [scripts/] [kconfig/] [lxdialog/] [inputbox.c] - Blame information for rev 3

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Line No. Rev Author Line
1 3 xianfeng 
/*
2 
 *  inputbox.c -- implements the input box
3 
 *
4 
 *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
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 *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
6 
 *
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 *  This program is free software; you can redistribute it and/or
8 
 *  modify it under the terms of the GNU General Public License
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 *  as published by the Free Software Foundation; either version 2
10 
 *  of the License, or (at your option) any later version.
11 
 *
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 *  This program is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 *  GNU General Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License
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 *  along with this program; if not, write to the Free Software
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 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 
 */
21 
 
22 
#include "dialog.h"
23 
 
24 
char dialog_input_result[MAX_LEN + 1];
25 
 
26 
/*
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 *  Print the termination buttons
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 */
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static void print_buttons(WINDOW * dialog, int height, int width, int selected)
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{
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        int x = width / 2 - 11;
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        int y = height - 2;
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34 
        print_button(dialog, "  Ok  ", y, x, selected == 0);
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        print_button(dialog, " Help ", y, x + 14, selected == 1);
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        wmove(dialog, y, x + 1 + 14 * selected);
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        wrefresh(dialog);
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}
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/*
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 * Display a dialog box for inputing a string
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 */
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int dialog_inputbox(const char *title, const char *prompt, int height, int width,
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                    const char *init)
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{
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        int i, x, y, box_y, box_x, box_width;
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        int input_x = 0, scroll = 0, key = 0, button = -1;
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        char *instr = dialog_input_result;
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        WINDOW *dialog;
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52 
        if (!init)
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                instr[0] = '\0';
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        else
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                strcpy(instr, init);
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do_resize:
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        if (getmaxy(stdscr) <= (height - 2))
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                return -ERRDISPLAYTOOSMALL;
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        if (getmaxx(stdscr) <= (width - 2))
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                return -ERRDISPLAYTOOSMALL;
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63 
        /* center dialog box on screen */
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        x = (COLS - width) / 2;
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        y = (LINES - height) / 2;
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        draw_shadow(stdscr, y, x, height, width);
68 
 
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        dialog = newwin(height, width, y, x);
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        keypad(dialog, TRUE);
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        draw_box(dialog, 0, 0, height, width,
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                 dlg.dialog.atr, dlg.border.atr);
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        wattrset(dialog, dlg.border.atr);
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        mvwaddch(dialog, height - 3, 0, ACS_LTEE);
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        for (i = 0; i < width - 2; i++)
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                waddch(dialog, ACS_HLINE);
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        wattrset(dialog, dlg.dialog.atr);
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        waddch(dialog, ACS_RTEE);
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        print_title(dialog, title, width);
82 
 
83 
        wattrset(dialog, dlg.dialog.atr);
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        print_autowrap(dialog, prompt, width - 2, 1, 3);
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86 
        /* Draw the input field box */
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        box_width = width - 6;
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        getyx(dialog, y, x);
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        box_y = y + 2;
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        box_x = (width - box_width) / 2;
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        draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
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                 dlg.border.atr, dlg.dialog.atr);
93 
 
94 
        print_buttons(dialog, height, width, 0);
95 
 
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        /* Set up the initial value */
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        wmove(dialog, box_y, box_x);
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        wattrset(dialog, dlg.inputbox.atr);
99 
 
100 
        input_x = strlen(instr);
101 
 
102 
        if (input_x >= box_width) {
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                scroll = input_x - box_width + 1;
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                input_x = box_width - 1;
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                for (i = 0; i < box_width - 1; i++)
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                        waddch(dialog, instr[scroll + i]);
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        } else {
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                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 */
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                        switch (key) {
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                        case TAB:
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                        case KEY_UP:
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                        case KEY_DOWN:
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                                break;
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                        case KEY_LEFT:
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                                continue;
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                        case KEY_RIGHT:
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                                continue;
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                        case KEY_BACKSPACE:
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                        case 127:
130 
                                if (input_x || scroll) {
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                                        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++)
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                                                        waddch(dialog,
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                                                               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 "Cancel" 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 "Cancel" 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 
}

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