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Bug 76920 - fire a mouseout event before doing a mousewheel scroll to avoid stuck tooltips. r=blake, sr=hyatt.

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bryner%uiuc.edu 2001-04-30 08:11:03 +00:00
parent 8baee2d4c1
commit 89eef2617e
1 changed files with 32 additions and 24 deletions
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56
content/events/src/nsEventStateManager.cpp
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@ -1184,31 +1184,35 @@ nsEventStateManager::DoWheelScroll(nsIPresContext* aPresContext,
curFrame->GetParent(&curFrame);
}
// Create a mouseout event that we fire to the content before
// scrolling, to allow tooltips to disappear, etc.
nsMouseEvent mouseOutEvent;
mouseOutEvent.eventStructType = NS_MOUSE_EVENT;
mouseOutEvent.message = NS_MOUSE_EXIT_SYNTH;
mouseOutEvent.widget = msEvent->widget;
mouseOutEvent.clickCount = 0;
mouseOutEvent.point = nsPoint(0,0);
mouseOutEvent.refPoint = nsPoint(0,0);
mouseOutEvent.isShift = PR_FALSE;
mouseOutEvent.isControl = PR_FALSE;
mouseOutEvent.isAlt = PR_FALSE;
mouseOutEvent.isMeta = PR_FALSE;
nsCOMPtr<nsIContent> targetContent;
aTargetFrame->GetContent(getter_AddRefs(targetContent));
nsEventStatus mouseoutStatus = nsEventStatus_eIgnore;
if (treeFrame) {
PRInt32 scrollIndex, visibleRows;
treeFrame->GetIndexOfFirstVisibleRow(&scrollIndex);
treeFrame->GetNumberOfVisibleRows(&visibleRows);
if (scrollPage)
scrollIndex += ((numLines > 0) ? visibleRows : -visibleRows);
else
scrollIndex += numLines;
if (scrollIndex < 0)
scrollIndex = 0;
else {
PRInt32 numRows, lastPageTopRow;
treeFrame->GetRowCount(&numRows);
lastPageTopRow = numRows - visibleRows;
if (scrollIndex > lastPageTopRow)
scrollIndex = lastPageTopRow;
}
treeFrame->ScrollToIndex(scrollIndex);
return NS_OK;
}
if (outlinerBoxObject) {
if (targetContent)
targetContent->HandleDOMEvent(aPresContext, &mouseOutEvent, nsnull,
NS_EVENT_FLAG_INIT, &mouseoutStatus);
return DoTreeScroll(aPresContext, numLines, scrollPage, treeFrame);
} else if (outlinerBoxObject) {
if (targetContent)
targetContent->HandleDOMEvent(aPresContext, &mouseOutEvent, nsnull,
NS_EVENT_FLAG_INIT, &mouseoutStatus);
if (scrollPage)
outlinerBoxObject->ScrollByPages((numLines > 0) ? 1 : -1);
else
@ -1264,6 +1268,10 @@ nsEventStateManager::DoWheelScroll(nsIPresContext* aPresContext,
}
if (sv) {
if (targetContent)
targetContent->HandleDOMEvent(aPresContext, &mouseOutEvent, nsnull,
NS_EVENT_FLAG_INIT, &mouseoutStatus);
if (scrollPage)
sv->ScrollByPages((numLines > 0) ? 1 : -1);
else