679 lines
18 KiB
C
679 lines
18 KiB
C
/// @file popupmnu.c
|
|
///
|
|
/// Popup menu (PUM)
|
|
//
|
|
#include "nvim/vim.h"
|
|
#include "nvim/popupmnu.h"
|
|
#include "nvim/charset.h"
|
|
#include "nvim/ex_cmds.h"
|
|
#include "nvim/memline.h"
|
|
#include "nvim/misc2.h"
|
|
#include "nvim/move.h"
|
|
#include "nvim/option.h"
|
|
#include "nvim/screen.h"
|
|
#include "nvim/search.h"
|
|
#include "nvim/strings.h"
|
|
#include "nvim/window.h"
|
|
|
|
static pumitem_T *pum_array = NULL; // items of displayed pum
|
|
static int pum_size; // nr of items in "pum_array"
|
|
static int pum_selected; // index of selected item or -1
|
|
static int pum_first = 0; // index of top item
|
|
|
|
static int pum_height; // nr of displayed pum items
|
|
static int pum_width; // width of displayed pum items
|
|
static int pum_base_width; // width of pum items base
|
|
static int pum_kind_width; // width of pum items kind column
|
|
static int pum_scrollbar; // TRUE when scrollbar present
|
|
|
|
static int pum_row; // top row of pum
|
|
static int pum_col; // left column of pum
|
|
|
|
static int pum_do_redraw = FALSE; // do redraw anyway
|
|
|
|
|
|
#ifdef INCLUDE_GENERATED_DECLARATIONS
|
|
# include "popupmnu.c.generated.h"
|
|
#endif
|
|
#define PUM_DEF_HEIGHT 10
|
|
#define PUM_DEF_WIDTH 15
|
|
|
|
/// Show the popup menu with items "array[size]".
|
|
/// "array" must remain valid until pum_undisplay() is called!
|
|
/// When possible the leftmost character is aligned with screen column "col".
|
|
/// The menu appears above the screen line "row" or at "row" + "height" - 1.
|
|
///
|
|
/// @param array
|
|
/// @param size
|
|
/// @param selected index of initially selected item, none if out of range
|
|
void pum_display(pumitem_T *array, int size, int selected)
|
|
{
|
|
int w;
|
|
int def_width;
|
|
int max_width;
|
|
int kind_width;
|
|
int extra_width;
|
|
int i;
|
|
int top_clear;
|
|
int row;
|
|
int context_lines;
|
|
int col;
|
|
int above_row = cmdline_row;
|
|
int redo_count = 0;
|
|
|
|
redo:
|
|
def_width = PUM_DEF_WIDTH;
|
|
max_width = 0;
|
|
kind_width = 0;
|
|
extra_width = 0;
|
|
|
|
// Pretend the pum is already there to avoid that must_redraw is set when
|
|
// 'cuc' is on.
|
|
pum_array = (pumitem_T *)1;
|
|
validate_cursor_col();
|
|
pum_array = NULL;
|
|
|
|
row = curwin->w_wrow + curwin->w_winrow;
|
|
|
|
if (firstwin->w_p_pvw) {
|
|
top_clear = firstwin->w_height;
|
|
} else {
|
|
top_clear = 0;
|
|
}
|
|
|
|
// When the preview window is at the bottom stop just above it. Also
|
|
// avoid drawing over the status line so that it's clear there is a window
|
|
// boundary.
|
|
if (lastwin->w_p_pvw) {
|
|
above_row -= lastwin->w_height + lastwin->w_status_height + 1;
|
|
}
|
|
|
|
// Figure out the size and position of the pum.
|
|
if (size < PUM_DEF_HEIGHT) {
|
|
pum_height = size;
|
|
} else {
|
|
pum_height = PUM_DEF_HEIGHT;
|
|
}
|
|
|
|
if ((p_ph > 0) && (pum_height > p_ph)) {
|
|
pum_height = p_ph;
|
|
}
|
|
|
|
// Put the pum below "row" if possible. If there are few lines decide on
|
|
// where there is more room.
|
|
if ((row + 2 >= above_row - pum_height)
|
|
&& (row > (above_row - top_clear) / 2)) {
|
|
// pum above "row"
|
|
|
|
// Leave two lines of context if possible
|
|
if (curwin->w_wrow - curwin->w_cline_row >= 2) {
|
|
context_lines = 2;
|
|
} else {
|
|
context_lines = curwin->w_wrow - curwin->w_cline_row;
|
|
}
|
|
|
|
if (row >= size + context_lines) {
|
|
pum_row = row - size - context_lines;
|
|
pum_height = size;
|
|
} else {
|
|
pum_row = 0;
|
|
pum_height = row - context_lines;
|
|
}
|
|
|
|
if ((p_ph > 0) && (pum_height > p_ph)) {
|
|
pum_row += pum_height - p_ph;
|
|
pum_height = p_ph;
|
|
}
|
|
} else {
|
|
// pum below "row"
|
|
|
|
// Leave two lines of context if possible
|
|
if (curwin->w_cline_row + curwin->w_cline_height - curwin->w_wrow >= 3) {
|
|
context_lines = 3;
|
|
} else {
|
|
context_lines = curwin->w_cline_row
|
|
+ curwin->w_cline_height - curwin->w_wrow;
|
|
}
|
|
|
|
pum_row = row + context_lines;
|
|
if (size > above_row - pum_row) {
|
|
pum_height = above_row - pum_row;
|
|
} else {
|
|
pum_height = size;
|
|
}
|
|
|
|
if ((p_ph > 0) && (pum_height > p_ph)) {
|
|
pum_height = p_ph;
|
|
}
|
|
}
|
|
|
|
// don't display when we only have room for one line
|
|
if ((pum_height < 1) || ((pum_height == 1) && (size > 1))) {
|
|
return;
|
|
}
|
|
|
|
// If there is a preview window at the top avoid drawing over it.
|
|
if (firstwin->w_p_pvw
|
|
&& (pum_row < firstwin->w_height)
|
|
&& (pum_height > firstwin->w_height + 4)) {
|
|
pum_row += firstwin->w_height;
|
|
pum_height -= firstwin->w_height;
|
|
}
|
|
|
|
// Compute the width of the widest match and the widest extra.
|
|
for (i = 0; i < size; ++i) {
|
|
w = vim_strsize(array[i].pum_text);
|
|
|
|
if (max_width < w) {
|
|
max_width = w;
|
|
}
|
|
|
|
if (array[i].pum_kind != NULL) {
|
|
w = vim_strsize(array[i].pum_kind) + 1;
|
|
|
|
if (kind_width < w) {
|
|
kind_width = w;
|
|
}
|
|
}
|
|
|
|
if (array[i].pum_extra != NULL) {
|
|
w = vim_strsize(array[i].pum_extra) + 1;
|
|
|
|
if (extra_width < w) {
|
|
extra_width = w;
|
|
}
|
|
}
|
|
}
|
|
pum_base_width = max_width;
|
|
pum_kind_width = kind_width;
|
|
|
|
// Calculate column
|
|
if (curwin->w_p_rl) {
|
|
col = curwin->w_wincol + curwin->w_width - curwin->w_wcol - 1;
|
|
} else {
|
|
col = curwin->w_wincol + curwin->w_wcol;
|
|
}
|
|
|
|
// if there are more items than room we need a scrollbar
|
|
if (pum_height < size) {
|
|
pum_scrollbar = 1;
|
|
max_width++;
|
|
} else {
|
|
pum_scrollbar = 0;
|
|
}
|
|
|
|
if (def_width < max_width) {
|
|
def_width = max_width;
|
|
}
|
|
|
|
if ((((col < Columns - PUM_DEF_WIDTH) || (col < Columns - max_width))
|
|
&& !curwin->w_p_rl)
|
|
|| (curwin->w_p_rl && ((col > PUM_DEF_WIDTH) || (col > max_width)))) {
|
|
// align pum column with "col"
|
|
pum_col = col;
|
|
if (curwin->w_p_rl) {
|
|
pum_width = pum_col - pum_scrollbar + 1;
|
|
} else {
|
|
pum_width = Columns - pum_col - pum_scrollbar;
|
|
}
|
|
|
|
if ((pum_width > max_width + kind_width + extra_width + 1)
|
|
&& (pum_width > PUM_DEF_WIDTH)) {
|
|
pum_width = max_width + kind_width + extra_width + 1;
|
|
|
|
if (pum_width < PUM_DEF_WIDTH) {
|
|
pum_width = PUM_DEF_WIDTH;
|
|
}
|
|
}
|
|
} else if (Columns < def_width) {
|
|
// not enough room, will use what we have
|
|
if (curwin->w_p_rl) {
|
|
pum_col = Columns - 1;
|
|
} else {
|
|
pum_col = 0;
|
|
}
|
|
pum_width = Columns - 1;
|
|
} else {
|
|
if (max_width > PUM_DEF_WIDTH) {
|
|
// truncate
|
|
max_width = PUM_DEF_WIDTH;
|
|
}
|
|
|
|
if (curwin->w_p_rl) {
|
|
pum_col = max_width - 1;
|
|
} else {
|
|
pum_col = Columns - max_width;
|
|
}
|
|
pum_width = max_width - pum_scrollbar;
|
|
}
|
|
|
|
pum_array = array;
|
|
pum_size = size;
|
|
|
|
// Set selected item and redraw. If the window size changed need to redo
|
|
// the positioning. Limit this to two times, when there is not much
|
|
// room the window size will keep changing.
|
|
if (pum_set_selected(selected, redo_count) && (++redo_count <= 2)) {
|
|
goto redo;
|
|
}
|
|
}
|
|
|
|
/// Redraw the popup menu, using "pum_first" and "pum_selected".
|
|
void pum_redraw(void)
|
|
{
|
|
int row = pum_row;
|
|
int col;
|
|
int attr_norm = highlight_attr[HLF_PNI];
|
|
int attr_select = highlight_attr[HLF_PSI];
|
|
int attr_scroll = highlight_attr[HLF_PSB];
|
|
int attr_thumb = highlight_attr[HLF_PST];
|
|
int attr;
|
|
int i;
|
|
int idx;
|
|
char_u *s;
|
|
char_u *p = NULL;
|
|
int totwidth, width, w;
|
|
int thumb_pos = 0;
|
|
int thumb_heigth = 1;
|
|
int round;
|
|
int n;
|
|
|
|
// Never display more than we have
|
|
if (pum_first > pum_size - pum_height) {
|
|
pum_first = pum_size - pum_height;
|
|
}
|
|
|
|
if (pum_scrollbar) {
|
|
thumb_heigth = pum_height * pum_height / pum_size;
|
|
if (thumb_heigth == 0) {
|
|
thumb_heigth = 1;
|
|
}
|
|
thumb_pos = (pum_first * (pum_height - thumb_heigth)
|
|
+ (pum_size - pum_height) / 2)
|
|
/ (pum_size - pum_height);
|
|
}
|
|
|
|
for (i = 0; i < pum_height; ++i) {
|
|
idx = i + pum_first;
|
|
attr = (idx == pum_selected) ? attr_select : attr_norm;
|
|
|
|
// prepend a space if there is room
|
|
if (curwin->w_p_rl) {
|
|
if (pum_col < curwin->w_wincol + curwin->w_width - 1) {
|
|
screen_putchar(' ', row, pum_col + 1, attr);
|
|
}
|
|
} else if (pum_col > 0) {
|
|
screen_putchar(' ', row, pum_col - 1, attr);
|
|
}
|
|
|
|
// Display each entry, use two spaces for a Tab.
|
|
// Do this 3 times: For the main text, kind and extra info
|
|
col = pum_col;
|
|
totwidth = 0;
|
|
|
|
for (round = 1; round <= 3; ++round) {
|
|
width = 0;
|
|
s = NULL;
|
|
|
|
switch (round) {
|
|
case 1:
|
|
p = pum_array[idx].pum_text;
|
|
break;
|
|
|
|
case 2:
|
|
p = pum_array[idx].pum_kind;
|
|
break;
|
|
|
|
case 3:
|
|
p = pum_array[idx].pum_extra;
|
|
break;
|
|
}
|
|
|
|
if (p != NULL) {
|
|
for (;; mb_ptr_adv(p)) {
|
|
if (s == NULL) {
|
|
s = p;
|
|
}
|
|
w = ptr2cells(p);
|
|
|
|
if ((*p == NUL) || (*p == TAB) || (totwidth + w > pum_width)) {
|
|
// Display the text that fits or comes before a Tab.
|
|
// First convert it to printable characters.
|
|
char_u *st;
|
|
int saved = *p;
|
|
|
|
*p = NUL;
|
|
st = transstr(s);
|
|
*p = saved;
|
|
|
|
if (curwin->w_p_rl) {
|
|
char_u *rt = reverse_text(st);
|
|
char_u *rt_start = rt;
|
|
int size = vim_strsize(rt);
|
|
|
|
if (size > pum_width) {
|
|
do {
|
|
size -= has_mbyte ? (*mb_ptr2cells)(rt) : 1;
|
|
mb_ptr_adv(rt);
|
|
} while (size > pum_width);
|
|
|
|
if (size < pum_width) {
|
|
// Most left character requires 2-cells but only 1 cell
|
|
// is available on screen. Put a '<' on the left of the
|
|
// pum item
|
|
*(--rt) = '<';
|
|
size++;
|
|
}
|
|
}
|
|
screen_puts_len(rt, (int)STRLEN(rt), row, col - size + 1,
|
|
attr);
|
|
free(rt_start);
|
|
free(st);
|
|
|
|
col -= width;
|
|
} else {
|
|
if (st != NULL) {
|
|
screen_puts_len(st, (int)STRLEN(st), row, col, attr);
|
|
free(st);
|
|
}
|
|
col += width;
|
|
}
|
|
|
|
if (*p != TAB) {
|
|
break;
|
|
}
|
|
|
|
// Display two spaces for a Tab.
|
|
if (curwin->w_p_rl) {
|
|
screen_puts_len((char_u *)" ", 2, row, col - 1, attr);
|
|
col -= 2;
|
|
} else {
|
|
screen_puts_len((char_u *)" ", 2, row, col, attr);
|
|
col += 2;
|
|
}
|
|
totwidth += 2;
|
|
// start text at next char
|
|
s = NULL;
|
|
width = 0;
|
|
} else {
|
|
width += w;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (round > 1) {
|
|
n = pum_kind_width + 1;
|
|
} else {
|
|
n = 1;
|
|
}
|
|
|
|
// Stop when there is nothing more to display.
|
|
if ((round == 3)
|
|
|| ((round == 2)
|
|
&& (pum_array[idx].pum_extra == NULL))
|
|
|| ((round == 1)
|
|
&& (pum_array[idx].pum_kind == NULL)
|
|
&& (pum_array[idx].pum_extra == NULL))
|
|
|| (pum_base_width + n >= pum_width)) {
|
|
break;
|
|
}
|
|
|
|
if (curwin->w_p_rl) {
|
|
screen_fill(row, row + 1, pum_col - pum_base_width - n + 1,
|
|
col + 1, ' ', ' ', attr);
|
|
col = pum_col - pum_base_width - n + 1;
|
|
} else {
|
|
screen_fill(row, row + 1, col, pum_col + pum_base_width + n,
|
|
' ', ' ', attr);
|
|
col = pum_col + pum_base_width + n;
|
|
}
|
|
totwidth = pum_base_width + n;
|
|
}
|
|
|
|
if (curwin->w_p_rl) {
|
|
screen_fill(row, row + 1, pum_col - pum_width + 1, col + 1, ' ', ' ',
|
|
attr);
|
|
} else {
|
|
screen_fill(row, row + 1, col, pum_col + pum_width, ' ', ' ', attr);
|
|
}
|
|
|
|
if (pum_scrollbar > 0) {
|
|
if (curwin->w_p_rl) {
|
|
screen_putchar(' ', row, pum_col - pum_width,
|
|
i >= thumb_pos && i < thumb_pos + thumb_heigth
|
|
? attr_thumb : attr_scroll);
|
|
} else {
|
|
screen_putchar(' ', row, pum_col + pum_width,
|
|
i >= thumb_pos && i < thumb_pos + thumb_heigth
|
|
? attr_thumb : attr_scroll);
|
|
}
|
|
}
|
|
row++;
|
|
}
|
|
}
|
|
|
|
/// 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;
|
|
}
|
|
|
|
/// Undisplay the popup menu (later).
|
|
void pum_undisplay(void)
|
|
{
|
|
pum_array = NULL;
|
|
redraw_all_later(SOME_VALID);
|
|
redraw_tabline = TRUE;
|
|
status_redraw_all();
|
|
}
|
|
|
|
/// Clear the popup menu. Currently only resets the offset to the first
|
|
/// displayed item.
|
|
void pum_clear(void)
|
|
{
|
|
pum_first = 0;
|
|
}
|
|
|
|
/// Overruled when "pum_do_redraw" is set, used to redraw the status lines.
|
|
///
|
|
/// @return TRUE if the popup menu is displayed.
|
|
int pum_visible(void)
|
|
{
|
|
return !pum_do_redraw && pum_array != NULL;
|
|
}
|
|
|
|
/// Gets the height of the menu.
|
|
///
|
|
/// @return the height of the popup menu, the number of entries visible.
|
|
/// Only valid when pum_visible() returns TRUE!
|
|
int pum_get_height(void)
|
|
{
|
|
return pum_height;
|
|
}
|