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/* $Id: window-choose.c,v 1.16 2009-06-25 16:21:32 nicm Exp $ */
/*
* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
#include "tmux.h"
struct screen *window_choose_init(struct window_pane *);
void window_choose_free(struct window_pane *);
void window_choose_resize(struct window_pane *, u_int, u_int);
void window_choose_key(struct window_pane *, struct client *, int);
void window_choose_mouse(
struct window_pane *, struct client *, u_char, u_char, u_char);
void window_choose_redraw_screen(struct window_pane *);
void window_choose_write_line(
struct window_pane *, struct screen_write_ctx *, u_int);
void window_choose_scroll_up(struct window_pane *);
void window_choose_scroll_down(struct window_pane *);
const struct window_mode window_choose_mode = {
window_choose_init,
window_choose_free,
window_choose_resize,
window_choose_key,
window_choose_mouse,
NULL,
};
struct window_choose_mode_item {
char *name;
int idx;
};
struct window_choose_mode_data {
struct screen screen;
struct mode_key_data mdata;
ARRAY_DECL(, struct window_choose_mode_item) list;
u_int top;
u_int selected;
void (*callback)(void *, int);
void *data;
};
void
window_choose_vadd(struct window_pane *wp, int idx, const char *fmt, va_list ap)
{
struct window_choose_mode_data *data = wp->modedata;
struct window_choose_mode_item *item;
ARRAY_EXPAND(&data->list, 1);
item = &ARRAY_LAST(&data->list);
xvasprintf(&item->name, fmt, ap);
item->idx = idx;
}
void printflike3
window_choose_add(struct window_pane *wp, int idx, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
window_choose_vadd(wp, idx, fmt, ap);
va_end(ap);
}
void
window_choose_ready(struct window_pane *wp,
u_int cur, void (*callback)(void *, int), void *cdata)
{
struct window_choose_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
data->selected = cur;
if (data->selected > screen_size_y(s) - 1)
data->top = ARRAY_LENGTH(&data->list) - screen_size_y(s);
data->callback = callback;
data->data = cdata;
window_choose_redraw_screen(wp);
}
struct screen *
window_choose_init(struct window_pane *wp)
{
struct window_choose_mode_data *data;
struct screen *s;
wp->modedata = data = xmalloc(sizeof *data);
data->callback = NULL;
ARRAY_INIT(&data->list);
data->top = 0;
s = &data->screen;
screen_init(s, screen_size_x(&wp->base), screen_size_y(&wp->base), 0);
s->mode &= ~MODE_CURSOR;
s->mode |= MODE_MOUSE;
mode_key_init(&data->mdata,
options_get_number(&wp->window->options, "mode-keys"),
MODEKEY_CHOOSEMODE);
return (s);
}
void
window_choose_free(struct window_pane *wp)
{
struct window_choose_mode_data *data = wp->modedata;
u_int i;
mode_key_free(&data->mdata);
for (i = 0; i < ARRAY_LENGTH(&data->list); i++)
xfree(ARRAY_ITEM(&data->list, i).name);
ARRAY_FREE(&data->list);
screen_free(&data->screen);
xfree(data);
}
void
window_choose_resize(struct window_pane *wp, u_int sx, u_int sy)
{
struct window_choose_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
data->top = 0;
if (data->selected > sy - 1)
data->top = data->selected - (sy - 1);
screen_resize(s, sx, sy);
window_choose_redraw_screen(wp);
}
void
window_choose_key(struct window_pane *wp, unused struct client *c, int key)
{
struct window_choose_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
struct window_choose_mode_item *item;
u_int items;
items = ARRAY_LENGTH(&data->list);
switch (mode_key_lookup(&data->mdata, key)) {
case MODEKEYCMD_QUIT:
data->callback(data->data, -1);
window_pane_reset_mode(wp);
break;
case MODEKEYCMD_CHOOSE:
item = &ARRAY_ITEM(&data->list, data->selected);
data->callback(data->data, item->idx);
window_pane_reset_mode(wp);
break;
case MODEKEYCMD_UP:
if (items == 0)
break;
if (data->selected == 0) {
data->selected = items - 1;
if (data->selected > screen_size_y(s) - 1)
data->top = items - screen_size_y(s);
window_choose_redraw_screen(wp);
break;
}
data->selected--;
if (data->selected < data->top)
window_choose_scroll_up(wp);
else {
screen_write_start(&ctx, wp, NULL);
window_choose_write_line(
wp, &ctx, data->selected - data->top);
window_choose_write_line(
wp, &ctx, data->selected + 1 - data->top);
screen_write_stop(&ctx);
}
break;
case MODEKEYCMD_DOWN:
if (items == 0)
break;
if (data->selected == items - 1) {
data->selected = 0;
data->top = 0;
window_choose_redraw_screen(wp);
break;
}
data->selected++;
if (data->selected >= data->top + screen_size_y(&data->screen))
window_choose_scroll_down(wp);
else {
screen_write_start(&ctx, wp, NULL);
window_choose_write_line(
wp, &ctx, data->selected - data->top);
window_choose_write_line(
wp, &ctx, data->selected - 1 - data->top);
screen_write_stop(&ctx);
}
break;
case MODEKEYCMD_PREVIOUSPAGE:
if (data->selected < screen_size_y(s)) {
data->selected = 0;
data->top = 0;
} else {
data->selected -= screen_size_y(s);
if (data->top < screen_size_y(s))
data->top = 0;
else
data->top -= screen_size_y(s);
}
window_choose_redraw_screen(wp);
break;
case MODEKEYCMD_NEXTPAGE:
data->selected += screen_size_y(s);
if (data->selected > items - 1)
data->selected = items - 1;
data->top += screen_size_y(s);
if (screen_size_y(s) < items) {
if (data->top + screen_size_y(s) > items)
data->top = items - screen_size_y(s);
} else
data->top = 0;
if (data->selected < data->top)
data->top = data->selected;
window_choose_redraw_screen(wp);
break;
default:
break;
}
}
void
window_choose_mouse(struct window_pane *wp,
unused struct client *c, u_char b, u_char x, u_char y)
{
struct window_choose_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct window_choose_mode_item *item;
u_int idx;
if ((b & 3) == 3)
return;
if (x >= screen_size_x(s))
return;
if (y >= screen_size_y(s))
return;
idx = data->top + y;
if (idx >= ARRAY_LENGTH(&data->list))
return;
data->selected = idx;
item = &ARRAY_ITEM(&data->list, data->selected);
data->callback(data->data, item->idx);
window_pane_reset_mode(wp);
}
void
window_choose_write_line(
struct window_pane *wp, struct screen_write_ctx *ctx, u_int py)
{
struct window_choose_mode_data *data = wp->modedata;
struct window_choose_mode_item *item;
struct screen *s = &data->screen;
struct grid_cell gc;
int utf8flag;
if (data->callback == NULL)
fatalx("called before callback assigned");
utf8flag = options_get_number(&wp->window->options, "utf8");
memcpy(&gc, &grid_default_cell, sizeof gc);
if (data->selected == data->top + py) {
gc.fg = options_get_number(&wp->window->options, "mode-bg");
gc.bg = options_get_number(&wp->window->options, "mode-fg");
gc.attr |= options_get_number(&wp->window->options, "mode-attr");
}
screen_write_cursormove(ctx, 0, py);
if (data->top + py < ARRAY_LENGTH(&data->list)) {
item = &ARRAY_ITEM(&data->list, data->top + py);
screen_write_nputs(
ctx, screen_size_x(s) - 1, &gc, utf8flag, "%s", item->name);
}
while (s->cx < screen_size_x(s))
screen_write_putc(ctx, &gc, ' ');
}
void
window_choose_redraw_screen(struct window_pane *wp)
{
struct window_choose_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
u_int i;
screen_write_start(&ctx, wp, NULL);
for (i = 0; i < screen_size_y(s); i++)
window_choose_write_line(wp, &ctx, i);
screen_write_stop(&ctx);
}
void
window_choose_scroll_up(struct window_pane *wp)
{
struct window_choose_mode_data *data = wp->modedata;
struct screen_write_ctx ctx;
if (data->top == 0)
return;
data->top--;
screen_write_start(&ctx, wp, NULL);
screen_write_cursormove(&ctx, 0, 0);
screen_write_insertline(&ctx, 1);
window_choose_write_line(wp, &ctx, 0);
if (screen_size_y(&data->screen) > 1)
window_choose_write_line(wp, &ctx, 1);
screen_write_stop(&ctx);
}
void
window_choose_scroll_down(struct window_pane *wp)
{
struct window_choose_mode_data *data = wp->modedata;
struct screen *s = &data->screen;
struct screen_write_ctx ctx;
if (data->top >= ARRAY_LENGTH(&data->list))
return;
data->top++;
screen_write_start(&ctx, wp, NULL);
screen_write_cursormove(&ctx, 0, 0);
screen_write_deleteline(&ctx, 1);
window_choose_write_line(wp, &ctx, screen_size_y(s) - 1);
if (screen_size_y(&data->screen) > 1)
window_choose_write_line(wp, &ctx, screen_size_y(s) - 2);
screen_write_stop(&ctx);
}