3 #include <linux/compiler.h>
4 #include <linux/list.h>
5 #include <linux/rbtree.h>
7 #include <sys/ttydefaults.h>
14 static int ui_browser__percent_color(double percent, bool current)
17 return HE_COLORSET_SELECTED;
18 if (percent >= MIN_RED)
19 return HE_COLORSET_TOP;
20 if (percent >= MIN_GREEN)
21 return HE_COLORSET_MEDIUM;
22 return HE_COLORSET_NORMAL;
25 void ui_browser__set_color(struct ui_browser *self __used, int color)
27 SLsmg_set_color(color);
30 void ui_browser__set_percent_color(struct ui_browser *self,
31 double percent, bool current)
33 int color = ui_browser__percent_color(percent, current);
34 ui_browser__set_color(self, color);
37 void ui_browser__gotorc(struct ui_browser *self, int y, int x)
39 SLsmg_gotorc(self->y + y, self->x + x);
42 void ui_browser__list_head_seek(struct ui_browser *self, off_t offset, int whence)
44 struct list_head *head = self->entries;
45 struct list_head *pos;
72 void ui_browser__rb_tree_seek(struct ui_browser *self, off_t offset, int whence)
74 struct rb_root *root = self->entries;
102 unsigned int ui_browser__rb_tree_refresh(struct ui_browser *self)
107 if (self->top == NULL)
108 self->top = rb_first(self->entries);
113 ui_browser__gotorc(self, row, 0);
114 self->write(self, nd, row);
115 if (++row == self->height)
123 bool ui_browser__is_current_entry(struct ui_browser *self, unsigned row)
125 return self->top_idx + row == self->index;
128 void ui_browser__refresh_dimensions(struct ui_browser *self)
131 newtGetScreenSize(&cols, &rows);
133 self->width = cols - 1;
134 self->height = rows - 2;
139 void ui_browser__reset_index(struct ui_browser *self)
141 self->index = self->top_idx = 0;
142 self->seek(self, 0, SEEK_SET);
145 void ui_browser__add_exit_key(struct ui_browser *self, int key)
147 newtFormAddHotKey(self->form, key);
150 void ui_browser__add_exit_keys(struct ui_browser *self, int keys[])
154 while (keys[i] && i < 64) {
155 ui_browser__add_exit_key(self, keys[i]);
160 int ui_browser__show(struct ui_browser *self, const char *title,
161 const char *helpline, ...)
164 int keys[] = { NEWT_KEY_UP, NEWT_KEY_DOWN, NEWT_KEY_PGUP,
165 NEWT_KEY_PGDN, NEWT_KEY_HOME, NEWT_KEY_END, ' ',
166 NEWT_KEY_LEFT, NEWT_KEY_ESCAPE, 'q', CTRL('c'), 0 };
168 if (self->form != NULL)
169 newtFormDestroy(self->form);
171 ui_browser__refresh_dimensions(self);
172 self->form = newtForm(NULL, NULL, 0);
173 if (self->form == NULL)
176 self->sb = newtVerticalScrollbar(self->width, 1, self->height,
178 HE_COLORSET_SELECTED);
179 if (self->sb == NULL)
183 ui_browser__set_color(self, NEWT_COLORSET_ROOT);
184 slsmg_write_nstring(title, self->width);
186 ui_browser__add_exit_keys(self, keys);
187 newtFormAddComponent(self->form, self->sb);
189 va_start(ap, helpline);
190 ui_helpline__vpush(helpline, ap);
195 void ui_browser__hide(struct ui_browser *self)
197 newtFormDestroy(self->form);
202 int ui_browser__refresh(struct ui_browser *self)
206 newtScrollbarSet(self->sb, self->index, self->nr_entries - 1);
207 row = self->refresh(self);
208 ui_browser__set_color(self, HE_COLORSET_NORMAL);
209 SLsmg_fill_region(self->y + row, self->x,
210 self->height - row, self->width, ' ');
215 int ui_browser__run(struct ui_browser *self)
217 struct newtExitStruct es;
219 if (ui_browser__refresh(self) < 0)
225 newtFormRun(self->form, &es);
227 if (es.reason != NEWT_EXIT_HOTKEY)
231 if (self->index == self->nr_entries - 1)
234 if (self->index == self->top_idx + self->height) {
236 self->seek(self, +1, SEEK_CUR);
240 if (self->index == 0)
243 if (self->index < self->top_idx) {
245 self->seek(self, -1, SEEK_CUR);
250 if (self->top_idx + self->height > self->nr_entries - 1)
253 offset = self->height;
254 if (self->index + offset > self->nr_entries - 1)
255 offset = self->nr_entries - 1 - self->index;
256 self->index += offset;
257 self->top_idx += offset;
258 self->seek(self, +offset, SEEK_CUR);
261 if (self->top_idx == 0)
264 if (self->top_idx < self->height)
265 offset = self->top_idx;
267 offset = self->height;
269 self->index -= offset;
270 self->top_idx -= offset;
271 self->seek(self, -offset, SEEK_CUR);
274 ui_browser__reset_index(self);
277 offset = self->height - 1;
278 if (offset >= self->nr_entries)
279 offset = self->nr_entries - 1;
281 self->index = self->nr_entries - 1;
282 self->top_idx = self->index - offset;
283 self->seek(self, -offset, SEEK_END);
288 if (ui_browser__refresh(self) < 0)
294 unsigned int ui_browser__list_head_refresh(struct ui_browser *self)
296 struct list_head *pos;
297 struct list_head *head = self->entries;
300 if (self->top == NULL || self->top == self->entries)
301 self->top = head->next;
305 list_for_each_from(pos, head) {
306 ui_browser__gotorc(self, row, 0);
307 self->write(self, pos, row);
308 if (++row == self->height)
315 static struct newtPercentTreeColors {
316 const char *topColorFg, *topColorBg;
317 const char *mediumColorFg, *mediumColorBg;
318 const char *normalColorFg, *normalColorBg;
319 const char *selColorFg, *selColorBg;
320 const char *codeColorFg, *codeColorBg;
321 } defaultPercentTreeColors = {
323 "green", "lightgray",
324 "black", "lightgray",
325 "lightgray", "magenta",
329 void ui_browser__init(void)
331 struct newtPercentTreeColors *c = &defaultPercentTreeColors;
333 sltt_set_color(HE_COLORSET_TOP, NULL, c->topColorFg, c->topColorBg);
334 sltt_set_color(HE_COLORSET_MEDIUM, NULL, c->mediumColorFg, c->mediumColorBg);
335 sltt_set_color(HE_COLORSET_NORMAL, NULL, c->normalColorFg, c->normalColorBg);
336 sltt_set_color(HE_COLORSET_SELECTED, NULL, c->selColorFg, c->selColorBg);
337 sltt_set_color(HE_COLORSET_CODE, NULL, c->codeColorFg, c->codeColorBg);