819d373a6d56541dfd92588e9bd428bbfb41518c
1 /*
2 * $Id$
3 *
4 * (c) 2004 by Kalle Wallin <kaw@linux.se>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
21 #include <stdlib.h>
22 #include <unistd.h>
23 #include <string.h>
24 #include <glib.h>
25 #include <ncurses.h>
27 #include "config.h"
28 #include "options.h"
29 #include "support.h"
30 #include "command.h"
31 #include "colors.h"
32 #include "list_window.h"
34 extern void screen_bell(void);
36 list_window_t *
37 list_window_init(WINDOW *w, int width, int height)
38 {
39 list_window_t *lw;
41 lw = g_malloc0(sizeof(list_window_t));
42 lw->w = w;
43 lw->cols = width;
44 lw->rows = height;
45 lw->clear = 1;
46 return lw;
47 }
49 list_window_t *
50 list_window_free(list_window_t *lw)
51 {
52 if( lw )
53 {
54 memset(lw, 0, sizeof(list_window_t));
55 g_free(lw);
56 }
57 return NULL;
58 }
60 void
61 list_window_reset(list_window_t *lw)
62 {
63 lw->selected = 0;
64 lw->xoffset = 0;
65 lw->start = 0;
66 lw->clear = 1;
67 }
69 void
70 list_window_check_selected(list_window_t *lw, int length)
71 {
72 while( lw->start && lw->start+lw->rows>length)
73 lw->start--;
75 if( lw->selected<0 )
76 lw->selected=0;
78 while( lw->selected<lw->start )
79 lw->selected++;
81 while( lw->selected>0 && length>0 && lw->selected>=length )
82 lw->selected--;
83 }
85 void
86 list_window_set_selected(list_window_t *lw, int n)
87 {
88 lw->selected=n;
89 }
91 void
92 list_window_next(list_window_t *lw, int length)
93 {
94 if( lw->selected < length-1 )
95 lw->selected++;
96 else if ( options.list_wrap )
97 lw->selected = 0;
98 }
100 void
101 list_window_previous(list_window_t *lw, int length)
102 {
103 if( lw->selected > 0 )
104 lw->selected--;
105 else if( options.list_wrap )
106 lw->selected = length-1;
107 }
109 void
110 list_window_right(list_window_t *lw, int length)
111 {
112 lw->xoffset++;
113 }
115 void
116 list_window_left(list_window_t *lw)
117 {
118 if( lw->xoffset > 0 )
119 lw->xoffset--;
120 }
122 void
123 list_window_first(list_window_t *lw)
124 {
125 lw->xoffset = 0;
126 lw->selected = 0;
127 }
129 void
130 list_window_last(list_window_t *lw, int length)
131 {
132 lw->xoffset = 0;
133 lw->selected = length-1;
134 }
136 void
137 list_window_next_page(list_window_t *lw, int length)
138 {
139 int step = lw->rows-1;
140 if( step<= 0 )
141 return;
142 if( lw->selected+step < length-1 )
143 lw->selected+=step;
144 else
145 return list_window_last(lw,length);
146 }
148 void
149 list_window_previous_page(list_window_t *lw)
150 {
151 int step = lw->rows-1;
152 if( step<= 0 )
153 return;
154 if( lw->selected-step > 0 )
155 lw->selected-=step;
156 else
157 list_window_first(lw);
158 }
161 void
162 list_window_paint(list_window_t *lw,
163 list_window_callback_fn_t callback,
164 void *callback_data)
165 {
166 int i;
167 int fill = options.wide_cursor;
168 int show_cursor = !(lw->flags & LW_HIDE_CURSOR);
170 if( show_cursor )
171 {
172 while( lw->selected < lw->start )
173 {
174 lw->start--;
175 lw->clear=1;
176 }
177 while( lw->selected >= lw->start+lw->rows )
178 {
179 lw->start++;
180 lw->clear=1;
181 }
182 }
184 for(i=0; i<lw->rows; i++)
185 {
186 int highlight = 0;
187 char *label;
189 label = (callback) (lw->start+i, &highlight, callback_data);
190 wmove(lw->w, i, 0);
191 if( lw->clear && (!fill || !label) )
192 wclrtoeol(lw->w);
193 if( label )
194 {
195 int selected = lw->start+i == lw->selected;
196 size_t len = my_strlen(label);
198 if( highlight )
199 colors_use(lw->w, COLOR_LIST_BOLD);
200 else
201 colors_use(lw->w, COLOR_LIST);
203 if( show_cursor && selected )
204 wattron(lw->w, A_REVERSE);
206 //waddnstr(lw->w, label, lw->cols);
207 waddstr(lw->w, label);
208 if( fill && len<lw->cols )
209 mvwhline(lw->w, i, len, ' ', lw->cols-len);
211 if( selected )
212 wattroff(lw->w, A_REVERSE);
213 }
215 }
216 lw->clear=0;
217 }
220 int
221 list_window_find(list_window_t *lw,
222 list_window_callback_fn_t callback,
223 void *callback_data,
224 char *str,
225 int wrap)
226 {
227 int h;
228 int i = lw->selected+1;
229 char *label;
231 while( wrap || i==lw->selected+1 )
232 {
233 while( (label=(callback) (i,&h,callback_data)) )
234 {
235 if( str && label && strcasestr(label, str) )
236 {
237 lw->selected = i;
238 return 0;
239 }
240 if( wrap && i==lw->selected )
241 return 1;
242 i++;
243 }
244 if( wrap )
245 {
246 if ( i==0 ) /* empty list */
247 return 1;
248 i=0; /* first item */
249 screen_bell();
250 }
251 }
252 return 1;
253 }
256 int
257 list_window_rfind(list_window_t *lw,
258 list_window_callback_fn_t callback,
259 void *callback_data,
260 char *str,
261 int wrap,
262 int rows)
263 {
264 int h;
265 int i = lw->selected-1;
266 char *label;
268 if ( rows == 0 )
269 return 1;
271 while( wrap || i==lw->selected-1 )
272 {
273 while( i>=0 && (label=(callback) (i,&h,callback_data)) )
274 {
275 if( str && label && strcasestr(label, str) )
276 {
277 lw->selected = i;
278 return 0;
279 }
280 if( wrap && i==lw->selected )
281 return 1;
282 i--;
283 }
284 if( wrap )
285 {
286 i=rows-1; /* last item */
287 screen_bell();
288 }
289 }
290 return 1;
291 }
294 /* perform basic list window commands (movement) */
295 int
296 list_window_cmd(list_window_t *lw, int rows, command_t cmd)
297 {
298 switch(cmd)
299 {
300 case CMD_LIST_PREVIOUS:
301 list_window_previous(lw, rows);
302 lw->repaint=1;
303 break;
304 case CMD_LIST_NEXT:
305 list_window_next(lw, rows);
306 lw->repaint=1;
307 break;
308 case CMD_LIST_FIRST:
309 list_window_first(lw);
310 lw->repaint = 1;
311 break;
312 case CMD_LIST_LAST:
313 list_window_last(lw, rows);
314 lw->repaint = 1;
315 break;
316 case CMD_LIST_NEXT_PAGE:
317 list_window_next_page(lw, rows);
318 lw->repaint = 1;
319 break;
320 case CMD_LIST_PREVIOUS_PAGE:
321 list_window_previous_page(lw);
322 lw->repaint = 1;
323 break;
324 default:
325 return 0;
326 }
327 return 1;
328 }
334 list_window_state_t *
335 list_window_init_state(void)
336 {
337 return g_malloc0(sizeof(list_window_state_t));
338 }
340 list_window_state_t *
341 list_window_free_state(list_window_state_t *state)
342 {
343 if( state )
344 {
345 if( state->list )
346 {
347 GList *list = state->list;
348 while( list )
349 {
350 g_free(list->data);
351 list->data = NULL;
352 list = list->next;
353 }
354 g_list_free(state->list);
355 state->list = NULL;
356 }
357 g_free(state);
358 }
359 return NULL;
360 }
362 void
363 list_window_push_state(list_window_state_t *state, list_window_t *lw)
364 {
365 if( state )
366 {
367 list_window_t *tmp = g_malloc(sizeof(list_window_t));
368 memcpy(tmp, lw, sizeof(list_window_t));
369 state->list = g_list_prepend(state->list, (gpointer) tmp);
370 list_window_reset(lw);
371 }
372 }
374 void
375 list_window_pop_state(list_window_state_t *state, list_window_t *lw)
376 {
377 if( state && state->list )
378 {
379 list_window_t *tmp = state->list->data;
381 memcpy(lw, tmp, sizeof(list_window_t));
382 g_free(tmp);
383 state->list->data = NULL;
384 state->list = g_list_delete_link(state->list, state->list);
385 }
386 }