Listview T5
Dimitrie O. Paun
dpaun at rogers.com
Fri Oct 18 17:04:01 CDT 2002
Fixes some selection ranges problem.
NB: this patch adds a lot of asserts. If you use this for
a production system, you may want to change the
DEBUG_RANGES from 1 to 0, otherwise ...
ChangeLog
Fix ranges insertion bug (specify DPAS_SORTED when searching)
Add a lot of assert-ed consistency checks
Add bunch of trace messages
--- dlls/comctl32/listview.c.T4 Fri Oct 18 16:24:57 2002
+++ dlls/comctl32/listview.c Fri Oct 18 18:00:16 2002
@@ -73,6 +73,9 @@
WINE_DEFAULT_DEBUG_CHANNEL(listview);
+/* make sure you set this to 0 for production use! */
+#define DEBUG_RANGES 1
+
typedef struct tagCOLUMN_INFO
{
RECT rcHeader; /* tracks the header's rectangle */
@@ -2185,14 +2188,6 @@
return nItemHeight;
}
-#if 0
-static void LISTVIEW_PrintSelectionRanges(LISTVIEW_INFO *infoPtr)
-{
- ERR("Selections are:\n");
- ranges_dump(infoPtr->selectionRanges);
-}
-#endif
-
/***
* DESCRIPTION:
* A compare function for ranges
@@ -2209,11 +2204,44 @@
*/
static INT CALLBACK ranges_cmp(LPVOID range1, LPVOID range2, LPARAM flags)
{
+ INT cmp;
+
if (((RANGE*)range1)->upper <= ((RANGE*)range2)->lower)
- return -1;
- if (((RANGE*)range2)->upper <= ((RANGE*)range1)->lower)
- return 1;
- return 0;
+ cmp = -1;
+ else if (((RANGE*)range2)->upper <= ((RANGE*)range1)->lower)
+ cmp = 1;
+ else
+ cmp = 0;
+
+ TRACE("range1=%s, range2=%s, cmp=%d\n", debugrange((RANGE*)range1), debugrange((RANGE*)range2), cmp);
+
+ return cmp;
+}
+
+#if DEBUG_RANGES
+#define ranges_check ranges_assert
+#else
+#define ranges_check(ranges, desc) do { } while(0)
+#endif
+
+static void ranges_assert(RANGES ranges, LPCSTR desc)
+{
+ INT i;
+ RANGE *prev, *curr;
+
+ assert (ranges);
+ assert (ranges->hdpa->nItemCount >= 0);
+ if (ranges->hdpa->nItemCount == 0) return;
+ TRACE("Checking %s:\n", desc);
+ ranges_dump(ranges);
+ assert ((prev = (RANGE *)DPA_GetPtr(ranges->hdpa, 0))->lower >= 0);
+ /* assert (((RANGE *)DPA_GetPtr(ranges->hdpa, ranges->hdpa->nItemCount - 1))->upper <= nUpper); */
+ for (i = 1; i < ranges->hdpa->nItemCount; i++)
+ {
+ curr = (RANGE *)DPA_GetPtr(ranges->hdpa, i);
+ assert (prev->upper <= curr->lower);
+ prev = curr;
+ }
}
static RANGES ranges_create(int count)
@@ -2292,6 +2320,7 @@
TRACE("(nItem=%d)\n", nItem);
if (!ranges) return FALSE;
if (TRACE_ON(listview)) ranges_dump(ranges);
+ ranges_check(ranges, "before contain");
return DPA_Search(ranges->hdpa, &srchrng, 0, ranges_cmp, 0, DPAS_SORTED) != -1;
}
@@ -2335,8 +2364,8 @@
INT index;
TRACE("(%s)\n", debugrange(&range));
- if (!ranges) return FALSE;
- if (TRACE_ON(listview)) ranges_dump(ranges);
+ ranges_check(ranges, "before add");
+ if (!ranges) goto fail;
/* try find overlapping regions first */
srchrgn.lower = range.lower - 1;
@@ -2351,11 +2380,12 @@
/* create the brand new range to insert */
newrgn = (RANGE *)COMCTL32_Alloc(sizeof(RANGE));
- if(!newrgn) return FALSE;
+ if(!newrgn) goto fail;
*newrgn = range;
/* figure out where to insert it */
- index = DPA_Search(ranges->hdpa, newrgn, 0, ranges_cmp, 0, DPAS_INSERTAFTER);
+ index = DPA_Search(ranges->hdpa, newrgn, 0, ranges_cmp, 0, DPAS_SORTED | DPAS_INSERTAFTER);
+ TRACE("index=%d\n", index);
if (index == -1) index = 0;
/* and get it over with */
@@ -2367,7 +2397,7 @@
INT fromindex, mergeindex;
chkrgn = DPA_GetPtr(ranges->hdpa, index);
- if (!chkrgn) return FALSE;
+ if (!chkrgn) goto fail;
TRACE("Merge with %s @%d\n", debugrange(chkrgn), index);
chkrgn->lower = min(range.lower, chkrgn->lower);
@@ -2393,7 +2423,7 @@
TRACE("Merge with index %i\n", mergeindex);
mrgrgn = DPA_GetPtr(ranges->hdpa, mergeindex);
- if (!mrgrgn) return FALSE;
+ if (!mrgrgn) goto fail;
chkrgn->lower = min(chkrgn->lower, mrgrgn->lower);
chkrgn->upper = max(chkrgn->upper, mrgrgn->upper);
@@ -2403,8 +2433,13 @@
} while(1);
}
+ ranges_check(ranges, "after add");
if (TRACE_ON(listview)) ranges_dump(ranges);
return TRUE;
+
+fail:
+ ranges_check(ranges, "failed add");
+ return FALSE;
}
static BOOL ranges_del(RANGES ranges, RANGE range)
@@ -2414,16 +2449,17 @@
INT index;
TRACE("(%s)\n", debugrange(&range));
- if (!ranges) return FALSE;
+ ranges_check(ranges, "before del");
+ if (!ranges) goto fail;
remrgn = range;
do
{
index = DPA_Search(ranges->hdpa, &remrgn, 0, ranges_cmp, 0, 0);
- if (index == -1) return TRUE;
+ if (index == -1) break;
chkrgn = DPA_GetPtr(ranges->hdpa, index);
- if (!chkrgn) return FALSE;
+ if (!chkrgn) goto fail;
TRACE("Matches range %s @%d\n", debugrange(chkrgn), index);
@@ -2456,7 +2492,7 @@
else
{
RANGE *newrgn = (RANGE *)COMCTL32_Alloc(sizeof(RANGE));
- if (!newrgn) return FALSE;
+ if (!newrgn) goto fail;
tmprgn = *chkrgn;
newrgn->lower = chkrgn->lower;
newrgn->upper = remrgn.lower;
@@ -2467,7 +2503,12 @@
}
while(!done);
+ ranges_check(ranges, "after del");
return TRUE;
+
+fail:
+ ranges_check(ranges, "failed del");
+ return FALSE;
}
/***
@@ -2506,9 +2547,9 @@
static inline BOOL LISTVIEW_DeselectAllSkipItem(LISTVIEW_INFO *infoPtr, INT nItem)
{
RANGES toSkip = ranges_create(1);
-
+
if (!toSkip) return FALSE;
- ranges_additem(toSkip, nItem);
+ if (nItem != -1) ranges_additem(toSkip, nItem);
LISTVIEW_DeselectAllSkipItems(infoPtr, toSkip);
ranges_destroy(toSkip);
return TRUE;
@@ -2904,6 +2945,8 @@
TRACE("()\n");
+ assert(lpLVItem->iItem >= 0 && lpLVItem->iItem < infoPtr->nItemCount);
+
if (lpLVItem->mask == 0) return TRUE;
if (infoPtr->dwStyle & LVS_OWNERDATA)
@@ -5835,7 +5878,7 @@
}
/* make sure it's an item, and not a subitem; cannot insert a subitem */
- if (!lpLVItem || lpLVItem->iSubItem) return -1;
+ if (!lpLVItem || lpLVItem->iItem < 0 || lpLVItem->iSubItem) return -1;
if (!is_assignable_item(lpLVItem, lStyle)) return -1;
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