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>0 && length>0 && lw->selected>=length )
52 lw->selected--;
53 }
55 void
56 list_window_set_selected(list_window_t *lw, int n)
57 {
58 lw->selected=n;
59 }
61 void
62 list_window_next(list_window_t *lw, int length)
63 {
64 if( lw->selected < length-1 )
65 lw->selected++;
66 }
68 void
69 list_window_previous(list_window_t *lw)
70 {
71 if( lw->selected > 0 )
72 lw->selected--;
73 }
75 void
76 list_window_first(list_window_t *lw)
77 {
78 lw->selected = 0;
79 }
81 void
82 list_window_last(list_window_t *lw, int length)
83 {
84 lw->selected = length-1;
85 }
87 void
88 list_window_next_page(list_window_t *lw, int length)
89 {
90 int step = lw->rows-1;
91 if( step<= 0 )
92 return;
93 if( lw->selected+step < length-1 )
94 lw->selected+=step;
95 else
96 return list_window_last(lw,length);
97 }
99 void
100 list_window_previous_page(list_window_t *lw)
101 {
102 int step = lw->rows-1;
103 if( step<= 0 )
104 return;
105 if( lw->selected-step > 0 )
106 lw->selected-=step;
107 else
108 list_window_first(lw);
109 }
112 void
113 list_window_paint(list_window_t *lw,
114 list_window_callback_fn_t callback,
115 void *callback_data)
116 {
117 int i;
119 while( lw->selected < lw->start )
120 {
121 lw->start--;
122 lw->clear=1;
123 }
124 while( lw->selected >= lw->start+lw->rows )
125 {
126 lw->start++;
127 lw->clear=1;
128 }
129 if( lw->clear )
130 {
131 wclear(lw->w);
132 lw->clear=0;
133 }
135 for(i=0; i<lw->rows; i++)
136 {
137 int highlight;
138 char *label;
140 label = (callback) (lw->start+i, &highlight, callback_data);
141 if( label )
142 {
143 wmove(lw->w, i, 0);
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);
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 }
160 int
161 list_window_find(list_window_t *lw,
162 list_window_callback_fn_t callback,
163 void *callback_data,
164 char *str,
165 int wrap)
166 {
167 int h;
168 int i = lw->selected+1;
169 char *label;
171 while( wrap || i==lw->selected+1 )
172 {
173 while( (label=(callback) (i,&h,callback_data)) )
174 {
175 if( str && label && strcasestr(label, str) )
176 {
177 lw->selected = i;
178 return 0;
179 }
180 if( wrap && i==lw->selected )
181 return 1;
182 i++;
183 }
184 if( wrap )
185 {
186 i=0; /* first item */
187 beep();
188 }
189 }
190 return 1;
191 }
194 int
195 list_window_rfind(list_window_t *lw,
196 list_window_callback_fn_t callback,
197 void *callback_data,
198 char *str,
199 int wrap,
200 int rows)
201 {
202 int h;
203 int i = lw->selected-1;
204 char *label;
206 while( wrap || i==lw->selected-1 )
207 {
208 while( i>=0 && (label=(callback) (i,&h,callback_data)) )
209 {
210 if( str && label && strcasestr(label, str) )
211 {
212 lw->selected = i;
213 return 0;
214 }
215 if( wrap && i==lw->selected )
216 return 1;
217 i--;
218 }
219 if( wrap )
220 {
221 i=rows-1; /* last item */
222 beep();
223 }
224 }
225 return 1;
226 }
229 /* perform basic list window commands (movement) */
230 int
231 list_window_cmd(list_window_t *lw, int rows, command_t cmd)
232 {
233 switch(cmd)
234 {
235 case CMD_LIST_PREVIOUS:
236 list_window_previous(lw);
237 lw->repaint=1;
238 break;
239 case CMD_LIST_NEXT:
240 list_window_next(lw, rows);
241 lw->repaint=1;
242 break;
243 case CMD_LIST_FIRST:
244 list_window_first(lw);
245 lw->repaint = 1;
246 break;
247 case CMD_LIST_LAST:
248 list_window_last(lw, rows);
249 lw->repaint = 1;
250 break;
251 case CMD_LIST_NEXT_PAGE:
252 list_window_next_page(lw, rows);
253 lw->repaint = 1;
254 break;
255 case CMD_LIST_PREVIOUS_PAGE:
256 list_window_previous_page(lw);
257 lw->repaint = 1;
258 break;
259 default:
260 return 0;
261 }
262 return 1;
263 }