int ui_browser__show(struct ui_browser *browser, const char *title,
const char *helpline, ...)
{
int err;
va_list ap;
if (browser->refresh_dimensions == NULL)
browser->refresh_dimensions = ui_browser__refresh_dimensions;
browser->refresh_dimensions(browser);
pthread_mutex_lock(&ui__lock);
__ui_browser__show_title(browser, title);
browser->title = title;
zfree(&browser->helpline);
va_start(ap, helpline);
err = vasprintf(&browser->helpline, helpline, ap);
va_end(ap);
if (err > 0)
ui_helpline__push(browser->helpline);
pthread_mutex_unlock(&ui__lock);
return err ? 0 : -1;
}
int ui_browser__show(struct ui_browser *self, const char *title,
const char *helpline, ...)
{
int err;
va_list ap;
ui_browser__refresh_dimensions(self);
pthread_mutex_lock(&ui__lock);
__ui_browser__show_title(self, title);
self->title = title;
free(self->helpline);
self->helpline = NULL;
va_start(ap, helpline);
err = vasprintf(&self->helpline, helpline, ap);
va_end(ap);
if (err > 0)
ui_helpline__push(self->helpline);
pthread_mutex_unlock(&ui__lock);
return err ? 0 : -1;
}
void ui_browser__show_title(struct ui_browser *browser, const char *title)
{
pthread_mutex_lock(&ui__lock);
__ui_browser__show_title(browser, title);
pthread_mutex_unlock(&ui__lock);
}
int ui_browser__run(struct ui_browser *browser, int delay_secs)
{
int err, key;
while (1) {
off_t offset;
pthread_mutex_lock(&ui__lock);
err = __ui_browser__refresh(browser);
SLsmg_refresh();
pthread_mutex_unlock(&ui__lock);
if (err < 0)
break;
key = ui__getch(delay_secs);
if (key == K_RESIZE) {
ui__refresh_dimensions(false);
browser->refresh_dimensions(browser);
__ui_browser__show_title(browser, browser->title);
ui_helpline__puts(browser->helpline);
continue;
}
if (browser->use_navkeypressed && !browser->navkeypressed) {
if (key == K_DOWN || key == K_UP ||
key == K_PGDN || key == K_PGUP ||
key == K_HOME || key == K_END ||
key == ' ') {
browser->navkeypressed = true;
continue;
} else
return key;
}
switch (key) {
case K_DOWN:
if (browser->index == browser->nr_entries - 1)
break;
++browser->index;
if (browser->index == browser->top_idx + browser->rows) {
++browser->top_idx;
browser->seek(browser, +1, SEEK_CUR);
}
break;
case K_UP:
if (browser->index == 0)
break;
--browser->index;
if (browser->index < browser->top_idx) {
--browser->top_idx;
browser->seek(browser, -1, SEEK_CUR);
}
break;
case K_PGDN:
case ' ':
if (browser->top_idx + browser->rows > browser->nr_entries - 1)
break;
offset = browser->rows;
if (browser->index + offset > browser->nr_entries - 1)
offset = browser->nr_entries - 1 - browser->index;
browser->index += offset;
browser->top_idx += offset;
browser->seek(browser, +offset, SEEK_CUR);
break;
case K_PGUP:
if (browser->top_idx == 0)
break;
if (browser->top_idx < browser->rows)
offset = browser->top_idx;
else
offset = browser->rows;
browser->index -= offset;
browser->top_idx -= offset;
browser->seek(browser, -offset, SEEK_CUR);
break;
case K_HOME:
ui_browser__reset_index(browser);
break;
case K_END:
offset = browser->rows - 1;
if (offset >= browser->nr_entries)
offset = browser->nr_entries - 1;
browser->index = browser->nr_entries - 1;
browser->top_idx = browser->index - offset;
browser->seek(browser, -offset, SEEK_END);
break;
default:
return key;
}
}
return -1;
}