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