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Bug 1179483 - Fix crash in mozilla::a11y::HyperTextAccessible::RelationByType. r=MarcoZ

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This commit is contained in:
Frédéric Wang 2015-07-02 08:50:00 -04:00
parent 55b8a964cc
commit 71464e7674
1 changed files with 4 additions and 3 deletions
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7
accessible/generic/HyperTextAccessible.cpp
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@ -1762,11 +1762,12 @@ HyperTextAccessible::RelationByType(RelationType aType)
switch (aType) {
case RelationType::NODE_CHILD_OF:
if (mContent->IsMathMLElement()) {
if (HasOwnContent() && mContent->IsMathMLElement()) {
Accessible* parent = Parent();
if (parent) {
nsIContent* parentContent = parent->GetContent();
if (parentContent->IsMathMLElement(nsGkAtoms::mroot_)) {
if (parentContent &&
parentContent->IsMathMLElement(nsGkAtoms::mroot_)) {
// Add a relation pointing to the parent <mroot>.
rel.AppendTarget(parent);
}
@ -1774,7 +1775,7 @@ HyperTextAccessible::RelationByType(RelationType aType)
}
break;
case RelationType::NODE_PARENT_OF:
if (mContent->IsMathMLElement(nsGkAtoms::mroot_)) {
if (HasOwnContent() && mContent->IsMathMLElement(nsGkAtoms::mroot_)) {
Accessible* base = GetChildAt(0);
Accessible* index = GetChildAt(1);
if (base && index) {