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shell32/autocomplete: Implement PageDown and PageUp for the auto-suggest listbox. 

Signed-off-by: Gabriel Ivăncescu <gabrielopcode@gmail.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Gabriel Ivăncescu 2018-09-27 00:35:23 +03:00 committed by Alexandre Julliard
parent 3f31afafc3
commit e3d57fe551
1 changed files with 63 additions and 30 deletions
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93
dlls/shell32/autocomplete.c
View File

@ -134,6 +134,66 @@ static size_t format_quick_complete(WCHAR *dst, const WCHAR *qc, const WCHAR *st
return dst - base;
}
static LRESULT change_selection(IAutoCompleteImpl *ac, HWND hwnd, UINT key)
{
INT count = SendMessageW(ac->hwndListBox, LB_GETCOUNT, 0, 0);
INT sel = SendMessageW(ac->hwndListBox, LB_GETCURSEL, 0, 0);
if (key == VK_PRIOR || key == VK_NEXT)
{
if (sel < 0)
sel = (key == VK_PRIOR) ? count - 1 : 0;
else
{
INT base = SendMessageW(ac->hwndListBox, LB_GETTOPINDEX, 0, 0);
INT pgsz = SendMessageW(ac->hwndListBox, LB_GETLISTBOXINFO, 0, 0);
pgsz = max(pgsz - 1, 1);
if (key == VK_PRIOR)
{
if (sel == 0)
sel = -1;
else
{
if (sel == base) base -= min(base, pgsz);
sel = base;
}
}
else
{
if (sel == count - 1)
sel = -1;
else
{
base += pgsz;
if (sel >= base) base += pgsz;
sel = min(base, count - 1);
}
}
}
}
else if (key == VK_UP)
sel = ((sel - 1) < -1) ? count - 1 : sel - 1;
else
sel = ((sel + 1) >= count) ? -1 : sel + 1;
SendMessageW(ac->hwndListBox, LB_SETCURSEL, sel, 0);
if (sel >= 0)
{
WCHAR *msg;
UINT len = SendMessageW(ac->hwndListBox, LB_GETTEXTLEN, sel, 0);
if (!(msg = heap_alloc((len + 1) * sizeof(WCHAR))))
return 0;
len = SendMessageW(ac->hwndListBox, LB_GETTEXT, sel, (LPARAM)msg);
set_text_and_selection(ac, hwnd, msg, len, len);
heap_free(msg);
}
else
{
UINT len = strlenW(ac->txtbackup);
set_text_and_selection(ac, hwnd, ac->txtbackup, len, len);
}
return 0;
}
static void autoappend_str(IAutoCompleteImpl *ac, WCHAR *text, UINT len, WCHAR *str, HWND hwnd)
{
DWORD sel_start;
@ -287,6 +347,8 @@ static LRESULT ACEditSubclassProc_KeyDown(IAutoCompleteImpl *ac, HWND hwnd, UINT
break;
case VK_UP:
case VK_DOWN:
case VK_PRIOR:
case VK_NEXT:
/* Two cases here:
- if the listbox is not visible and ACO_UPDOWNKEYDROPSLIST is
set, display it with all the entries, without selecting any
@ -304,36 +366,7 @@ static LRESULT ACEditSubclassProc_KeyDown(IAutoCompleteImpl *ac, HWND hwnd, UINT
}
}
else
{
INT count, sel;
count = SendMessageW(ac->hwndListBox, LB_GETCOUNT, 0, 0);
/* Change the selection */
sel = SendMessageW(ac->hwndListBox, LB_GETCURSEL, 0, 0);
if (wParam == VK_UP)
sel = ((sel - 1) < -1) ? count - 1 : sel - 1;
else
sel = ((sel + 1) >= count) ? -1 : sel + 1;
SendMessageW(ac->hwndListBox, LB_SETCURSEL, sel, 0);
if (sel >= 0)
{
WCHAR *msg;
UINT len;
len = SendMessageW(ac->hwndListBox, LB_GETTEXTLEN, sel, 0);
if (!(msg = heap_alloc((len + 1) * sizeof(WCHAR))))
return 0;
len = SendMessageW(ac->hwndListBox, LB_GETTEXT, sel, (LPARAM)msg);
set_text_and_selection(ac, hwnd, msg, len, len);
heap_free(msg);
}
else
{
UINT len = strlenW(ac->txtbackup);
set_text_and_selection(ac, hwnd, ac->txtbackup, len, len);
}
return 0;
}
return change_selection(ac, hwnd, wParam);
break;
case VK_DELETE:
{