NS_IMETHODIMP
nsAccessiblePivot::MoveToPoint(nsIAccessibleTraversalRule* aRule,
int32_t aX, int32_t aY, bool aIgnoreNoMatch,
bool aIsFromUserInput, uint8_t aArgc,
bool* aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
NS_ENSURE_ARG_POINTER(aRule);
*aResult = false;
Accessible* root = GetActiveRoot();
NS_ENSURE_TRUE(root && !root->IsDefunct(), NS_ERROR_NOT_IN_TREE);
RuleCache cache(aRule);
Accessible* match = nullptr;
Accessible* child = root->ChildAtPoint(aX, aY, Accessible::eDeepestChild);
while (child && root != child) {
uint16_t filtered = nsIAccessibleTraversalRule::FILTER_IGNORE;
nsresult rv = cache.ApplyFilter(child, &filtered);
NS_ENSURE_SUCCESS(rv, rv);
// Ignore any matching nodes that were below this one
if (filtered & nsIAccessibleTraversalRule::FILTER_IGNORE_SUBTREE)
match = nullptr;
// Match if no node below this is a match
if ((filtered & nsIAccessibleTraversalRule::FILTER_MATCH) && !match) {
int32_t childX, childY, childWidth, childHeight;
child->GetBounds(&childX, &childY, &childWidth, &childHeight);
// Double-check child's bounds since the deepest child may have been out
// of bounds. This assures we don't return a false positive.
if (aX >= childX && aX < childX + childWidth &&
aY >= childY && aY < childY + childHeight)
match = child;
}
child = child->Parent();
}
if (match || !aIgnoreNoMatch)
*aResult = MovePivotInternal(match, nsIAccessiblePivot::REASON_POINT,
(aArgc > 0) ? aIsFromUserInput : true);
return NS_OK;
}
Accessible*
OuterDocAccessible::ChildAtPoint(int32_t aX, int32_t aY,
EWhichChildAtPoint aWhichChild)
{
nsIntRect docRect = Bounds();
if (aX < docRect.x || aX >= docRect.x + docRect.width ||
aY < docRect.y || aY >= docRect.y + docRect.height)
return nullptr;
// Always return the inner doc as direct child accessible unless bounds
// outside of it.
Accessible* child = GetChildAt(0);
NS_ENSURE_TRUE(child, nullptr);
if (aWhichChild == eDeepestChild)
return child->ChildAtPoint(aX, aY, eDeepestChild);
return child;
}
Accessible*
OuterDocAccessible::ChildAtPoint(int32_t aX, int32_t aY,
EWhichChildAtPoint aWhichChild)
{
int32_t docX = 0, docY = 0, docWidth = 0, docHeight = 0;
nsresult rv = GetBounds(&docX, &docY, &docWidth, &docHeight);
NS_ENSURE_SUCCESS(rv, nullptr);
if (aX < docX || aX >= docX + docWidth || aY < docY || aY >= docY + docHeight)
return nullptr;
// Always return the inner doc as direct child accessible unless bounds
// outside of it.
Accessible* child = GetChildAt(0);
NS_ENSURE_TRUE(child, nullptr);
if (aWhichChild == eDeepestChild)
return child->ChildAtPoint(aX, aY, eDeepestChild);
return child;
}