/*
* Set the index of the currently selected item. The menu will scroll when
* necessary. When "n" is out of range don't scroll.
* This may be repeated when the preview window is used:
* "repeat" == 0: open preview window normally
* "repeat" == 1: open preview window but don't set the size
* "repeat" == 2: don't open preview window
* Returns TRUE when the window was resized and the location of the popup menu
* must be recomputed.
*/
static int
pum_set_selected(int n, int repeat)
{
int resized = FALSE;
int context = pum_height / 2;
pum_selected = n;
if (pum_selected >= 0 && pum_selected < pum_size)
{
if (pum_first > pum_selected - 4)
{
/* scroll down; when we did a jump it's probably a PageUp then
* scroll a whole page */
if (pum_first > pum_selected - 2)
{
pum_first -= pum_height - 2;
if (pum_first < 0)
pum_first = 0;
else if (pum_first > pum_selected)
pum_first = pum_selected;
}
else
pum_first = pum_selected;
}
else if (pum_first < pum_selected - pum_height + 5)
{
/* scroll up; when we did a jump it's probably a PageDown then
* scroll a whole page */
if (pum_first < pum_selected - pum_height + 1 + 2)
{
pum_first += pum_height - 2;
if (pum_first < pum_selected - pum_height + 1)
pum_first = pum_selected - pum_height + 1;
}
else
pum_first = pum_selected - pum_height + 1;
}
/* Give a few lines of context when possible. */
if (context > 3)
context = 3;
if (pum_height > 2)
{
if (pum_first > pum_selected - context)
{
/* scroll down */
pum_first = pum_selected - context;
if (pum_first < 0)
pum_first = 0;
}
else if (pum_first < pum_selected + context - pum_height + 1)
{
/* scroll up */
pum_first = pum_selected + context - pum_height + 1;
}
}
#if defined(FEAT_QUICKFIX)
/*
* Show extra info in the preview window if there is something and
* 'completeopt' contains "preview".
* Skip this when tried twice already.
* Skip this also when there is not much room.
* NOTE: Be very careful not to sync undo!
*/
if (pum_array[pum_selected].pum_info != NULL
&& Rows > 10
&& repeat <= 1
&& vim_strchr(p_cot, 'p') != NULL)
{
win_T *curwin_save = curwin;
tabpage_T *curtab_save = curtab;
int res = OK;
/* Open a preview window. 3 lines by default. Prefer
* 'previewheight' if set and smaller. */
g_do_tagpreview = 3;
if (p_pvh > 0 && p_pvh < g_do_tagpreview)
g_do_tagpreview = p_pvh;
++RedrawingDisabled;
/* Prevent undo sync here, if an autocommand syncs undo weird
* things can happen to the undo tree. */
++no_u_sync;
resized = prepare_tagpreview(FALSE);
--no_u_sync;
--RedrawingDisabled;
g_do_tagpreview = 0;
if (curwin->w_p_pvw)
{
if (!resized
&& curbuf->b_nwindows == 1
&& curbuf->b_fname == NULL
&& curbuf->b_p_bt[0] == 'n' && curbuf->b_p_bt[2] == 'f'
&& curbuf->b_p_bh[0] == 'w')
{
/* Already a "wipeout" buffer, make it empty. */
while (!BUFEMPTY())
ml_delete((linenr_T)1, FALSE);
}
else
{
/* Don't want to sync undo in the current buffer. */
++no_u_sync;
res = do_ecmd(0, NULL, NULL, NULL, ECMD_ONE, 0, NULL);
--no_u_sync;
if (res == OK)
{
/* Edit a new, empty buffer. Set options for a "wipeout"
* buffer. */
set_option_value((char_u *)"swf", 0L, NULL, OPT_LOCAL);
set_option_value((char_u *)"bt", 0L,
(char_u *)"nofile", OPT_LOCAL);
set_option_value((char_u *)"bh", 0L,
(char_u *)"wipe", OPT_LOCAL);
set_option_value((char_u *)"diff", 0L,
NULL, OPT_LOCAL);
}
}
if (res == OK)
{
char_u *p, *e;
linenr_T lnum = 0;
for (p = pum_array[pum_selected].pum_info; *p != NUL; )
{
e = vim_strchr(p, '\n');
if (e == NULL)
{
ml_append(lnum++, p, 0, FALSE);
break;
}
else
{
*e = NUL;
ml_append(lnum++, p, (int)(e - p + 1), FALSE);
*e = '\n';
p = e + 1;
}
}
/* Increase the height of the preview window to show the
* text, but no more than 'previewheight' lines. */
if (repeat == 0)
{
if (lnum > p_pvh)
lnum = p_pvh;
if (curwin->w_height < lnum)
{
win_setheight((int)lnum);
resized = TRUE;
}
}
curbuf->b_changed = 0;
curbuf->b_p_ma = FALSE;
curwin->w_cursor.lnum = 1;
curwin->w_cursor.col = 0;
if ((curwin != curwin_save && win_valid(curwin_save))
|| (curtab != curtab_save
&& valid_tabpage(curtab_save)))
{
if (curtab != curtab_save && valid_tabpage(curtab_save))
goto_tabpage_tp(curtab_save, FALSE, FALSE);
/* When the first completion is done and the preview
* window is not resized, skip the preview window's
* status line redrawing. */
if (ins_compl_active() && !resized)
curwin->w_redr_status = FALSE;
/* Return cursor to where we were */
validate_cursor();
redraw_later(SOME_VALID);
/* When the preview window was resized we need to
* update the view on the buffer. Only go back to
* the window when needed, otherwise it will always be
* redraw. */
if (resized)
{
++no_u_sync;
win_enter(curwin_save, TRUE);
--no_u_sync;
update_topline();
}
/* Update the screen before drawing the popup menu.
* Enable updating the status lines. */
pum_do_redraw = TRUE;
update_screen(0);
pum_do_redraw = FALSE;
if (!resized && win_valid(curwin_save))
{
++no_u_sync;
win_enter(curwin_save, TRUE);
--no_u_sync;
}
/* May need to update the screen again when there are
* autocommands involved. */
pum_do_redraw = TRUE;
update_screen(0);
pum_do_redraw = FALSE;
}
}
}
}
#endif
}
if (!resized)
pum_redraw();
return resized;
}
/// Set the index of the currently selected item. The menu will scroll when
/// necessary. When "n" is out of range don't scroll.
/// This may be repeated when the preview window is used:
/// "repeat" == 0: open preview window normally
/// "repeat" == 1: open preview window but don't set the size
/// "repeat" == 2: don't open preview window
///
/// @param n
/// @param repeat
///
/// @returns TRUE when the window was resized and the location of the popup
/// menu must be recomputed.
static int pum_set_selected(int n, int repeat)
{
int resized = FALSE;
int context = pum_height / 2;
pum_selected = n;
if ((pum_selected >= 0) && (pum_selected < pum_size)) {
if (pum_first > pum_selected - 4) {
// scroll down; when we did a jump it's probably a PageUp then
// scroll a whole page
if (pum_first > pum_selected - 2) {
pum_first -= pum_height - 2;
if (pum_first < 0) {
pum_first = 0;
} else if (pum_first > pum_selected) {
pum_first = pum_selected;
}
} else {
pum_first = pum_selected;
}
} else if (pum_first < pum_selected - pum_height + 5) {
// scroll up; when we did a jump it's probably a PageDown then
// scroll a whole page
if (pum_first < pum_selected - pum_height + 1 + 2) {
pum_first += pum_height - 2;
if (pum_first < pum_selected - pum_height + 1) {
pum_first = pum_selected - pum_height + 1;
}
} else {
pum_first = pum_selected - pum_height + 1;
}
}
// Give a few lines of context when possible.
if (context > 3) {
context = 3;
}
if (pum_height > 2) {
if (pum_first > pum_selected - context) {
// scroll down
pum_first = pum_selected - context;
if (pum_first < 0) {
pum_first = 0;
}
} else if (pum_first < pum_selected + context - pum_height + 1) {
// scroll up
pum_first = pum_selected + context - pum_height + 1;
}
}
// Show extra info in the preview window if there is something and
// 'completeopt' contains "preview".
// Skip this when tried twice already.
// Skip this also when there is not much room.
// NOTE: Be very careful not to sync undo!
if ((pum_array[pum_selected].pum_info != NULL)
&& (Rows > 10)
&& (repeat <= 1)
&& (vim_strchr(p_cot, 'p') != NULL)) {
win_T *curwin_save = curwin;
int res = OK;
// Open a preview window. 3 lines by default. Prefer
// 'previewheight' if set and smaller.
g_do_tagpreview = 3;
if ((p_pvh > 0) && (p_pvh < g_do_tagpreview)) {
g_do_tagpreview = p_pvh;
}
resized = prepare_tagpreview(false);
g_do_tagpreview = 0;
if (curwin->w_p_pvw) {
if ((curbuf->b_fname == NULL)
&& (curbuf->b_p_bt[0] == 'n')
&& (curbuf->b_p_bt[2] == 'f')
&& (curbuf->b_p_bh[0] == 'w')) {
// Already a "wipeout" buffer, make it empty.
while (!bufempty()) {
ml_delete((linenr_T)1, FALSE);
}
} else {
// Don't want to sync undo in the current buffer.
no_u_sync++;
res = do_ecmd(0, NULL, NULL, NULL, ECMD_ONE, 0, NULL);
no_u_sync--;
if (res == OK) {
// Edit a new, empty buffer. Set options for a "wipeout"
// buffer.
set_option_value((char_u *)"swf", 0L, NULL, OPT_LOCAL);
set_option_value((char_u *)"bt", 0L,
(char_u *)"nofile", OPT_LOCAL);
set_option_value((char_u *)"bh", 0L,
(char_u *)"wipe", OPT_LOCAL);
set_option_value((char_u *)"diff", 0L,
NULL, OPT_LOCAL);
}
}
if (res == OK) {
char_u *p, *e;
linenr_T lnum = 0;
for (p = pum_array[pum_selected].pum_info; *p != NUL;) {
e = vim_strchr(p, '\n');
if (e == NULL) {
ml_append(lnum++, p, 0, FALSE);
break;
} else {
*e = NUL;
ml_append(lnum++, p, (int)(e - p + 1), FALSE);
*e = '\n';
p = e + 1;
}
}
// Increase the height of the preview window to show the
// text, but no more than 'previewheight' lines.
if (repeat == 0) {
if (lnum > p_pvh) {
lnum = p_pvh;
}
if (curwin->w_height < lnum) {
win_setheight((int)lnum);
resized = TRUE;
}
}
curbuf->b_changed = 0;
curbuf->b_p_ma = FALSE;
curwin->w_cursor.lnum = 1;
curwin->w_cursor.col = 0;
if ((curwin != curwin_save) && win_valid(curwin_save)) {
// Return cursor to where we were
validate_cursor();
redraw_later(SOME_VALID);
// When the preview window was resized we need to
// update the view on the buffer. Only go back to
// the window when needed, otherwise it will always be
// redraw.
if (resized) {
win_enter(curwin_save, true);
update_topline();
}
// Update the screen before drawing the popup menu.
// Enable updating the status lines.
pum_do_redraw = TRUE;
update_screen(0);
pum_do_redraw = FALSE;
if (!resized && win_valid(curwin_save)) {
win_enter(curwin_save, true);
}
// May need to update the screen again when there are
// autocommands involved.
pum_do_redraw = TRUE;
update_screen(0);
pum_do_redraw = FALSE;
}
}
}
}
}
if (!resized) {
pum_redraw();
}
return resized;
}