1 /*
2 * (c) 2004 by Kalle Wallin (kaw@linux.se)
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 *
17 */
19 #include <stdlib.h>
20 #include <unistd.h>
21 #include <string.h>
22 #include <glib.h>
23 #include <ncurses.h>
25 #include "config.h"
26 #include "options.h"
27 #include "support.h"
28 #include "command.h"
29 #include "colors.h"
30 #include "list_window.h"
32 list_window_t *
33 list_window_init(WINDOW *w, int width, int height)
34 {
35 list_window_t *lw;
37 lw = g_malloc(sizeof(list_window_t));
38 memset(lw, 0, sizeof(list_window_t));
39 lw->w = w;
40 lw->cols = width;
41 lw->rows = height;
42 lw->clear = 1;
43 return lw;
44 }
46 list_window_t *
47 list_window_free(list_window_t *lw)
48 {
49 if( lw )
50 {
51 memset(lw, 0, sizeof(list_window_t));
52 g_free(lw);
53 }
54 return NULL;
55 }
57 void
58 list_window_reset(list_window_t *lw)
59 {
60 lw->selected = 0;
61 lw->start = 0;
62 lw->clear = 1;
63 }
65 void
66 list_window_check_selected(list_window_t *lw, int length)
67 {
68 while( lw->start && lw->start+lw->rows>length)
69 lw->start--;
71 if( lw->selected<0 )
72 lw->selected=0;
74 while( lw->selected<lw->start )
75 lw->selected++;
77 while( lw->selected>0 && length>0 && lw->selected>=length )
78 lw->selected--;
79 }
81 void
82 list_window_set_selected(list_window_t *lw, int n)
83 {
84 lw->selected=n;
85 }
87 void
88 list_window_next(list_window_t *lw, int length)
89 {
90 if( lw->selected < length-1 )
91 lw->selected++;
92 }
94 void
95 list_window_previous(list_window_t *lw)
96 {
97 if( lw->selected > 0 )
98 lw->selected--;
99 }
101 void
102 list_window_first(list_window_t *lw)
103 {
104 lw->selected = 0;
105 }
107 void
108 list_window_last(list_window_t *lw, int length)
109 {
110 lw->selected = length-1;
111 }
113 void
114 list_window_next_page(list_window_t *lw, int length)
115 {
116 int step = lw->rows-1;
117 if( step<= 0 )
118 return;
119 if( lw->selected+step < length-1 )
120 lw->selected+=step;
121 else
122 return list_window_last(lw,length);
123 }
125 void
126 list_window_previous_page(list_window_t *lw)
127 {
128 int step = lw->rows-1;
129 if( step<= 0 )
130 return;
131 if( lw->selected-step > 0 )
132 lw->selected-=step;
133 else
134 list_window_first(lw);
135 }
138 void
139 list_window_paint(list_window_t *lw,
140 list_window_callback_fn_t callback,
141 void *callback_data)
142 {
143 int i;
144 int fill = options.wide_cursor;
146 while( lw->selected < lw->start )
147 {
148 lw->start--;
149 lw->clear=1;
150 }
151 while( lw->selected >= lw->start+lw->rows )
152 {
153 lw->start++;
154 lw->clear=1;
155 }
157 for(i=0; i<lw->rows; i++)
158 {
159 int highlight = 0;
160 char *label;
162 label = (callback) (lw->start+i, &highlight, callback_data);
163 wmove(lw->w, i, 0);
164 if( lw->clear && (!fill || !label) )
165 wclrtoeol(lw->w);
166 if( label )
167 {
168 int selected = lw->start+i == lw->selected;
170 if( highlight )
171 colors_use(lw->w, COLOR_LIST_BOLD);
172 else
173 colors_use(lw->w, COLOR_LIST);
175 if( selected )
176 wattron(lw->w, A_REVERSE);
178 waddnstr(lw->w, label, lw->cols-1);
179 if( fill )
180 mvwhline(lw->w, i, strlen(label), ' ', lw->cols-1);
182 if( selected )
183 wattroff(lw->w, A_REVERSE);
184 }
186 }
187 lw->clear=0;
188 }
191 int
192 list_window_find(list_window_t *lw,
193 list_window_callback_fn_t callback,
194 void *callback_data,
195 char *str,
196 int wrap)
197 {
198 int h;
199 int i = lw->selected+1;
200 char *label;
202 while( wrap || i==lw->selected+1 )
203 {
204 while( (label=(callback) (i,&h,callback_data)) )
205 {
206 if( str && label && strcasestr(label, str) )
207 {
208 lw->selected = i;
209 return 0;
210 }
211 if( wrap && i==lw->selected )
212 return 1;
213 i++;
214 }
215 if( wrap )
216 {
217 i=0; /* first item */
218 beep();
219 }
220 }
221 return 1;
222 }
225 int
226 list_window_rfind(list_window_t *lw,
227 list_window_callback_fn_t callback,
228 void *callback_data,
229 char *str,
230 int wrap,
231 int rows)
232 {
233 int h;
234 int i = lw->selected-1;
235 char *label;
237 while( wrap || i==lw->selected-1 )
238 {
239 while( i>=0 && (label=(callback) (i,&h,callback_data)) )
240 {
241 if( str && label && strcasestr(label, str) )
242 {
243 lw->selected = i;
244 return 0;
245 }
246 if( wrap && i==lw->selected )
247 return 1;
248 i--;
249 }
250 if( wrap )
251 {
252 i=rows-1; /* last item */
253 beep();
254 }
255 }
256 return 1;
257 }
260 /* perform basic list window commands (movement) */
261 int
262 list_window_cmd(list_window_t *lw, int rows, command_t cmd)
263 {
264 switch(cmd)
265 {
266 case CMD_LIST_PREVIOUS:
267 list_window_previous(lw);
268 lw->repaint=1;
269 break;
270 case CMD_LIST_NEXT:
271 list_window_next(lw, rows);
272 lw->repaint=1;
273 break;
274 case CMD_LIST_FIRST:
275 list_window_first(lw);
276 lw->repaint = 1;
277 break;
278 case CMD_LIST_LAST:
279 list_window_last(lw, rows);
280 lw->repaint = 1;
281 break;
282 case CMD_LIST_NEXT_PAGE:
283 list_window_next_page(lw, rows);
284 lw->repaint = 1;
285 break;
286 case CMD_LIST_PREVIOUS_PAGE:
287 list_window_previous_page(lw);
288 lw->repaint = 1;
289 break;
290 default:
291 return 0;
292 }
293 return 1;
294 }