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comctl32: Make iterator_remove_common_items working on one range iterators.

This commit is contained in:
Piotr Caban 2011-06-28 10:18:54 +02:00 committed by Alexandre Julliard
parent ebcf08e59a
commit 8669fa7308
1 changed files with 33 additions and 0 deletions
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33
dlls/comctl32/listview.c
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@ -1501,6 +1501,39 @@ static BOOL iterator_visibleitems(ITERATOR *i, const LISTVIEW_INFO *infoPtr, HDC
/* Passed iterators have to point on the first elements */
static BOOL iterator_remove_common_items(ITERATOR *iter1, ITERATOR *iter2)
{
if(!iter1->ranges || !iter2->ranges) {
int lower, upper;
if(iter1->ranges || iter2->ranges ||
(iter1->range.lower<iter2->range.lower && iter1->range.upper>iter2->range.upper) ||
(iter1->range.lower>iter2->range.lower && iter1->range.upper<iter2->range.upper)) {
ERR("result is not a one range iterator\n");
return FALSE;
}
if(iter1->range.lower==-1 || iter2->range.lower==-1)
return TRUE;
lower = iter1->range.lower;
upper = iter1->range.upper;
if(lower < iter2->range.lower)
iter1->range.upper = iter2->range.lower;
else if(upper > iter2->range.upper)
iter1->range.lower = iter2->range.upper;
else
iter1->range.lower = iter1->range.upper = -1;
if(iter2->range.lower < lower)
iter2->range.upper = lower;
else if(iter2->range.upper > upper)
iter2->range.lower = upper;
else
iter2->range.lower = iter2->range.upper = -1;
return TRUE;
}
iterator_next(iter1);
iterator_next(iter2);