1 #include <stdlib.h>
2 #include <unistd.h>
3 #include <string.h>
4 #include <glib.h>
5 #include <ncurses.h>
7 #include "config.h"
8 #include "support.h"
9 #include "command.h"
10 #include "list_window.h"
12 list_window_t *
13 list_window_init(WINDOW *w, int width, int height)
14 {
15 list_window_t *lw;
17 lw = g_malloc(sizeof(list_window_t));
18 memset(lw, 0, sizeof(list_window_t));
19 lw->w = w;
20 lw->cols = width;
21 lw->rows = height;
22 lw->clear = 1;
23 return lw;
24 }
26 list_window_t *
27 list_window_free(list_window_t *lw)
28 {
29 if( lw )
30 {
31 memset(lw, 0, sizeof(list_window_t));
32 g_free(lw);
33 }
34 return NULL;
35 }
37 void
38 list_window_reset(list_window_t *lw)
39 {
40 lw->selected = 0;
41 lw->start = 0;
42 lw->clear = 1;
43 }
45 void
46 list_window_check_selected(list_window_t *lw, int length)
47 {
48 if( lw->selected<0 )
49 lw->selected=0;
51 while( lw->selected<lw->start )
52 lw->selected++;
54 while( lw->selected>0 && length>0 && lw->selected>=length )
55 lw->selected--;
56 }
58 void
59 list_window_set_selected(list_window_t *lw, int n)
60 {
61 lw->selected=n;
62 }
64 void
65 list_window_next(list_window_t *lw, int length)
66 {
67 if( lw->selected < length-1 )
68 lw->selected++;
69 }
71 void
72 list_window_previous(list_window_t *lw)
73 {
74 if( lw->selected > 0 )
75 lw->selected--;
76 }
78 void
79 list_window_first(list_window_t *lw)
80 {
81 lw->selected = 0;
82 }
84 void
85 list_window_last(list_window_t *lw, int length)
86 {
87 lw->selected = length-1;
88 }
90 void
91 list_window_next_page(list_window_t *lw, int length)
92 {
93 int step = lw->rows-1;
94 if( step<= 0 )
95 return;
96 if( lw->selected+step < length-1 )
97 lw->selected+=step;
98 else
99 return list_window_last(lw,length);
100 }
102 void
103 list_window_previous_page(list_window_t *lw)
104 {
105 int step = lw->rows-1;
106 if( step<= 0 )
107 return;
108 if( lw->selected-step > 0 )
109 lw->selected-=step;
110 else
111 list_window_first(lw);
112 }
115 void
116 list_window_paint(list_window_t *lw,
117 list_window_callback_fn_t callback,
118 void *callback_data)
119 {
120 int i;
122 while( lw->selected < lw->start )
123 {
124 lw->start--;
125 lw->clear=1;
126 }
127 while( lw->selected >= lw->start+lw->rows )
128 {
129 lw->start++;
130 lw->clear=1;
131 }
133 for(i=0; i<lw->rows; i++)
134 {
135 int highlight;
136 char *label;
138 label = (callback) (lw->start+i, &highlight, callback_data);
139 wmove(lw->w, i, 0);
140 if( lw->clear )
141 wclrtoeol(lw->w);
142 if( label )
143 {
144 if( highlight )
145 wattron(lw->w, A_BOLD);
146 if( lw->start+i == lw->selected )
147 wattron(lw->w, A_REVERSE);
149 waddnstr(lw->w, label, lw->cols-1);
151 if( highlight )
152 wattroff(lw->w, A_BOLD);
153 if( lw->start+i == lw->selected )
154 wattroff(lw->w, A_REVERSE);
155 }
156 }
157 lw->clear=0;
158 }
161 int
162 list_window_find(list_window_t *lw,
163 list_window_callback_fn_t callback,
164 void *callback_data,
165 char *str,
166 int wrap)
167 {
168 int h;
169 int i = lw->selected+1;
170 char *label;
172 while( wrap || i==lw->selected+1 )
173 {
174 while( (label=(callback) (i,&h,callback_data)) )
175 {
176 if( str && label && strcasestr(label, str) )
177 {
178 lw->selected = i;
179 return 0;
180 }
181 if( wrap && i==lw->selected )
182 return 1;
183 i++;
184 }
185 if( wrap )
186 {
187 i=0; /* first item */
188 beep();
189 }
190 }
191 return 1;
192 }
195 int
196 list_window_rfind(list_window_t *lw,
197 list_window_callback_fn_t callback,
198 void *callback_data,
199 char *str,
200 int wrap,
201 int rows)
202 {
203 int h;
204 int i = lw->selected-1;
205 char *label;
207 while( wrap || i==lw->selected-1 )
208 {
209 while( i>=0 && (label=(callback) (i,&h,callback_data)) )
210 {
211 if( str && label && strcasestr(label, str) )
212 {
213 lw->selected = i;
214 return 0;
215 }
216 if( wrap && i==lw->selected )
217 return 1;
218 i--;
219 }
220 if( wrap )
221 {
222 i=rows-1; /* last item */
223 beep();
224 }
225 }
226 return 1;
227 }
230 /* perform basic list window commands (movement) */
231 int
232 list_window_cmd(list_window_t *lw, int rows, command_t cmd)
233 {
234 switch(cmd)
235 {
236 case CMD_LIST_PREVIOUS:
237 list_window_previous(lw);
238 lw->repaint=1;
239 break;
240 case CMD_LIST_NEXT:
241 list_window_next(lw, rows);
242 lw->repaint=1;
243 break;
244 case CMD_LIST_FIRST:
245 list_window_first(lw);
246 lw->repaint = 1;
247 break;
248 case CMD_LIST_LAST:
249 list_window_last(lw, rows);
250 lw->repaint = 1;
251 break;
252 case CMD_LIST_NEXT_PAGE:
253 list_window_next_page(lw, rows);
254 lw->repaint = 1;
255 break;
256 case CMD_LIST_PREVIOUS_PAGE:
257 list_window_previous_page(lw);
258 lw->repaint = 1;
259 break;
260 default:
261 return 0;
262 }
263 return 1;
264 }