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Use C-e and C-y for scrolling in vi mode, from Micah Cowan.
[tmux-openbsd.git] / window-choose.c
blob15226607e79c4f0c7ab3b60afea305217261cc02
1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19 #include <sys/types.h>
20
21 #include <string.h>
22
23 #include "tmux.h"
24
25 struct screen *window_choose_init(struct window_pane *);
26 void window_choose_free(struct window_pane *);
27 void window_choose_resize(struct window_pane *, u_int, u_int);
28 void window_choose_key(struct window_pane *, struct client *, int);
29 void window_choose_mouse(
30 struct window_pane *, struct client *, struct mouse_event *);
31
32 void window_choose_redraw_screen(struct window_pane *);
33 void window_choose_write_line(
34 struct window_pane *, struct screen_write_ctx *, u_int);
35
36 void window_choose_scroll_up(struct window_pane *);
37 void window_choose_scroll_down(struct window_pane *);
38
39 const struct window_mode window_choose_mode = {
40 window_choose_init,
41 window_choose_free,
42 window_choose_resize,
43 window_choose_key,
44 window_choose_mouse,
45 NULL,
46 };
47
48 struct window_choose_mode_item {
49 char *name;
50 int idx;
51 };
52
53 struct window_choose_mode_data {
54 struct screen screen;
55
56 struct mode_key_data mdata;
57
58 ARRAY_DECL(, struct window_choose_mode_item) list;
59 u_int top;
60 u_int selected;
61
62 void (*callbackfn)(void *, int);
63 void (*freefn)(void *);
64 void *data;
65 };
66
67 int window_choose_key_index(struct window_choose_mode_data *, u_int);
68 int window_choose_index_key(struct window_choose_mode_data *, int);
69
70 void
71 window_choose_vadd(struct window_pane *wp, int idx, const char *fmt, va_list ap)
72 {
73 struct window_choose_mode_data *data = wp->modedata;
74 struct window_choose_mode_item *item;
75
76 ARRAY_EXPAND(&data->list, 1);
77 item = &ARRAY_LAST(&data->list);
78 xvasprintf(&item->name, fmt, ap);
79 item->idx = idx;
80 }
81
82 void printflike3
83 window_choose_add(struct window_pane *wp, int idx, const char *fmt, ...)
84 {
85 va_list ap;
86
87 va_start(ap, fmt);
88 window_choose_vadd(wp, idx, fmt, ap);
89 va_end(ap);
90 }
91
92 void
93 window_choose_ready(struct window_pane *wp, u_int cur,
94 void (*callbackfn)(void *, int), void (*freefn)(void *), void *cdata)
95 {
96 struct window_choose_mode_data *data = wp->modedata;
97 struct screen *s = &data->screen;
98
99 data->selected = cur;
100 if (data->selected > screen_size_y(s) - 1)
101 data->top = ARRAY_LENGTH(&data->list) - screen_size_y(s);
102
103 data->callbackfn = callbackfn;
104 data->freefn = freefn;
105 data->data = cdata;
106
107 window_choose_redraw_screen(wp);
108 }
109
110 struct screen *
111 window_choose_init(struct window_pane *wp)
112 {
113 struct window_choose_mode_data *data;
114 struct screen *s;
115 int keys;
116
117 wp->modedata = data = xmalloc(sizeof *data);
118
119 data->callbackfn = NULL;
120 data->freefn = NULL;
121 data->data = NULL;
122
123 ARRAY_INIT(&data->list);
124 data->top = 0;
125
126 s = &data->screen;
127 screen_init(s, screen_size_x(&wp->base), screen_size_y(&wp->base), 0);
128 s->mode &= ~MODE_CURSOR;
129 if (options_get_number(&wp->window->options, "mode-mouse"))
130 s->mode |= MODE_MOUSE;
131
132 keys = options_get_number(&wp->window->options, "mode-keys");
133 if (keys == MODEKEY_EMACS)
134 mode_key_init(&data->mdata, &mode_key_tree_emacs_choice);
135 else
136 mode_key_init(&data->mdata, &mode_key_tree_vi_choice);
137
138 return (s);
139 }
140
141 void
142 window_choose_free(struct window_pane *wp)
143 {
144 struct window_choose_mode_data *data = wp->modedata;
145 u_int i;
146
147 if (data->freefn != NULL && data->data != NULL)
148 data->freefn(data->data);
149
150 for (i = 0; i < ARRAY_LENGTH(&data->list); i++)
151 xfree(ARRAY_ITEM(&data->list, i).name);
152 ARRAY_FREE(&data->list);
153
154 screen_free(&data->screen);
155 xfree(data);
156 }
157
158 void
159 window_choose_resize(struct window_pane *wp, u_int sx, u_int sy)
160 {
161 struct window_choose_mode_data *data = wp->modedata;
162 struct screen *s = &data->screen;
163
164 data->top = 0;
165 if (data->selected > sy - 1)
166 data->top = data->selected - (sy - 1);
167
168 screen_resize(s, sx, sy);
169 window_choose_redraw_screen(wp);
170 }
171
172 /* ARGSUSED */
173 void
174 window_choose_key(struct window_pane *wp, unused struct client *c, int key)
175 {
176 struct window_choose_mode_data *data = wp->modedata;
177 struct screen *s = &data->screen;
178 struct screen_write_ctx ctx;
179 struct window_choose_mode_item *item;
180 u_int items;
181 int idx;
182
183 items = ARRAY_LENGTH(&data->list);
184
185 switch (mode_key_lookup(&data->mdata, key)) {
186 case MODEKEYCHOICE_CANCEL:
187 data->callbackfn(data->data, -1);
188 window_pane_reset_mode(wp);
189 break;
190 case MODEKEYCHOICE_CHOOSE:
191 item = &ARRAY_ITEM(&data->list, data->selected);
192 data->callbackfn(data->data, item->idx);
193 window_pane_reset_mode(wp);
194 break;
195 case MODEKEYCHOICE_UP:
196 if (items == 0)
197 break;
198 if (data->selected == 0) {
199 data->selected = items - 1;
200 if (data->selected > screen_size_y(s) - 1)
201 data->top = items - screen_size_y(s);
202 window_choose_redraw_screen(wp);
203 break;
204 }
205 data->selected--;
206 if (data->selected < data->top)
207 window_choose_scroll_up(wp);
208 else {
209 screen_write_start(&ctx, wp, NULL);
210 window_choose_write_line(
211 wp, &ctx, data->selected - data->top);
212 window_choose_write_line(
213 wp, &ctx, data->selected + 1 - data->top);
214 screen_write_stop(&ctx);
215 }
216 break;
217 case MODEKEYCHOICE_DOWN:
218 if (items == 0)
219 break;
220 if (data->selected == items - 1) {
221 data->selected = 0;
222 data->top = 0;
223 window_choose_redraw_screen(wp);
224 break;
225 }
226 data->selected++;
227
228 if (data->selected >= data->top + screen_size_y(&data->screen))
229 window_choose_scroll_down(wp);
230 else {
231 screen_write_start(&ctx, wp, NULL);
232 window_choose_write_line(
233 wp, &ctx, data->selected - data->top);
234 window_choose_write_line(
235 wp, &ctx, data->selected - 1 - data->top);
236 screen_write_stop(&ctx);
237 }
238 break;
239 case MODEKEYCHOICE_PAGEUP:
240 if (data->selected < screen_size_y(s)) {
241 data->selected = 0;
242 data->top = 0;
243 } else {
244 data->selected -= screen_size_y(s);
245 if (data->top < screen_size_y(s))
246 data->top = 0;
247 else
248 data->top -= screen_size_y(s);
249 }
250 window_choose_redraw_screen(wp);
251 break;
252 case MODEKEYCHOICE_PAGEDOWN:
253 data->selected += screen_size_y(s);
254 if (data->selected > items - 1)
255 data->selected = items - 1;
256 data->top += screen_size_y(s);
257 if (screen_size_y(s) < items) {
258 if (data->top + screen_size_y(s) > items)
259 data->top = items - screen_size_y(s);
260 } else
261 data->top = 0;
262 if (data->selected < data->top)
263 data->top = data->selected;
264 window_choose_redraw_screen(wp);
265 break;
266 default:
267 idx = window_choose_index_key(data, key);
268 if (idx < 0 || (u_int) idx >= ARRAY_LENGTH(&data->list))
269 break;
270 data->selected = idx;
271
272 item = &ARRAY_ITEM(&data->list, data->selected);
273 data->callbackfn(data->data, item->idx);
274 window_pane_reset_mode(wp);
275 break;
276 }
277 }
278
279 /* ARGSUSED */
280 void
281 window_choose_mouse(
282 struct window_pane *wp, unused struct client *c, struct mouse_event *m)
283 {
284 struct window_choose_mode_data *data = wp->modedata;
285 struct screen *s = &data->screen;
286 struct window_choose_mode_item *item;
287 u_int idx;
288
289 if ((m->b & 3) == 3)
290 return;
291 if (m->x >= screen_size_x(s))
292 return;
293 if (m->y >= screen_size_y(s))
294 return;
295
296 idx = data->top + m->y;
297 if (idx >= ARRAY_LENGTH(&data->list))
298 return;
299 data->selected = idx;
300
301 item = &ARRAY_ITEM(&data->list, data->selected);
302 data->callbackfn(data->data, item->idx);
303 window_pane_reset_mode(wp);
304 }
305
306 void
307 window_choose_write_line(
308 struct window_pane *wp, struct screen_write_ctx *ctx, u_int py)
309 {
310 struct window_choose_mode_data *data = wp->modedata;
311 struct window_choose_mode_item *item;
312 struct options *oo = &wp->window->options;
313 struct screen *s = &data->screen;
314 struct grid_cell gc;
315 int utf8flag, key;
316
317 if (data->callbackfn == NULL)
318 fatalx("called before callback assigned");
319
320 utf8flag = options_get_number(&wp->window->options, "utf8");
321 memcpy(&gc, &grid_default_cell, sizeof gc);
322 if (data->selected == data->top + py) {
323 colour_set_fg(&gc, options_get_number(oo, "mode-fg"));
324 colour_set_bg(&gc, options_get_number(oo, "mode-bg"));
325 gc.attr |= options_get_number(oo, "mode-attr");
326 }
327
328 screen_write_cursormove(ctx, 0, py);
329 if (data->top + py < ARRAY_LENGTH(&data->list)) {
330 item = &ARRAY_ITEM(&data->list, data->top + py);
331 key = window_choose_key_index(data, data->top + py);
332 if (key != -1) {
333 screen_write_nputs(ctx, screen_size_x(s) - 1,
334 &gc, utf8flag, "(%c) %s", key, item->name);
335 } else {
336 screen_write_nputs(ctx, screen_size_x(s) - 1,
337 &gc, utf8flag, " %s", item->name);
338 }
339
340 }
341 while (s->cx < screen_size_x(s))
342 screen_write_putc(ctx, &gc, ' ');
343 }
344
345 int
346 window_choose_key_index(struct window_choose_mode_data *data, u_int idx)
347 {
348 static const char keys[] = "0123456789abcdefghijklmnopqrstuvwxyz";
349 const char *ptr;
350 int mkey;
351
352 for (ptr = keys; *ptr != '\0'; ptr++) {
353 mkey = mode_key_lookup(&data->mdata, *ptr);
354 if (mkey != MODEKEY_NONE && mkey != MODEKEY_OTHER)
355 continue;
356 if (idx-- == 0)
357 return (*ptr);
358 }
359 return (-1);
360 }
361
362 int
363 window_choose_index_key(struct window_choose_mode_data *data, int key)
364 {
365 static const char keys[] = "0123456789abcdefghijklmnopqrstuvwxyz";
366 const char *ptr;
367 int mkey;
368 u_int idx = 0;
369
370 for (ptr = keys; *ptr != '\0'; ptr++) {
371 mkey = mode_key_lookup(&data->mdata, *ptr);
372 if (mkey != MODEKEY_NONE && mkey != MODEKEY_OTHER)
373 continue;
374 if (key == *ptr)
375 return (idx);
376 idx++;
377 }
378 return (-1);
379 }
380
381 void
382 window_choose_redraw_screen(struct window_pane *wp)
383 {
384 struct window_choose_mode_data *data = wp->modedata;
385 struct screen *s = &data->screen;
386 struct screen_write_ctx ctx;
387 u_int i;
388
389 screen_write_start(&ctx, wp, NULL);
390 for (i = 0; i < screen_size_y(s); i++)
391 window_choose_write_line(wp, &ctx, i);
392 screen_write_stop(&ctx);
393 }
394
395 void
396 window_choose_scroll_up(struct window_pane *wp)
397 {
398 struct window_choose_mode_data *data = wp->modedata;
399 struct screen_write_ctx ctx;
400
401 if (data->top == 0)
402 return;
403 data->top--;
404
405 screen_write_start(&ctx, wp, NULL);
406 screen_write_cursormove(&ctx, 0, 0);
407 screen_write_insertline(&ctx, 1);
408 window_choose_write_line(wp, &ctx, 0);
409 if (screen_size_y(&data->screen) > 1)
410 window_choose_write_line(wp, &ctx, 1);
411 screen_write_stop(&ctx);
412 }
413
414 void
415 window_choose_scroll_down(struct window_pane *wp)
416 {
417 struct window_choose_mode_data *data = wp->modedata;
418 struct screen *s = &data->screen;
419 struct screen_write_ctx ctx;
420
421 if (data->top >= ARRAY_LENGTH(&data->list))
422 return;
423 data->top++;
424
425 screen_write_start(&ctx, wp, NULL);
426 screen_write_cursormove(&ctx, 0, 0);
427 screen_write_deleteline(&ctx, 1);
428 window_choose_write_line(wp, &ctx, screen_size_y(s) - 1);
429 if (screen_size_y(&data->screen) > 1)
430 window_choose_write_line(wp, &ctx, screen_size_y(s) - 2);
431 screen_write_stop(&ctx);
432 }