void nsOuterDocAccessible::CacheChildren(PRBool aWalkAnonContent)
{
// An outer doc accessible usually has 1 nsDocAccessible child,
// but could have none if we can't get to the inner documnet
if (!mWeakShell) {
mAccChildCount = eChildCountUninitialized;
return; // This outer doc node has been shut down
}
if (mAccChildCount != eChildCountUninitialized) {
return;
}
mAccChildCount = 0;
SetFirstChild(nsnull);
// In these variable names, "outer" relates to the nsOuterDocAccessible
// as opposed to the nsDocAccessibleWrap which is "inner".
// The outer node is a something like a <browser>, <frame>, <iframe>, <page> or
// <editor> tag, whereas the inner node corresponds to the inner document root.
nsCOMPtr<nsIContent> content(do_QueryInterface(mDOMNode));
NS_ASSERTION(content, "No nsIContent for <browser>/<iframe>/<editor> dom node");
nsCOMPtr<nsIDocument> outerDoc = content->GetDocument();
if (!outerDoc) {
return;
}
nsIDocument *innerDoc = outerDoc->GetSubDocumentFor(content);
nsCOMPtr<nsIDOMNode> innerNode(do_QueryInterface(innerDoc));
if (!innerNode) {
return;
}
nsCOMPtr<nsIAccessible> innerAccessible;
nsCOMPtr<nsIAccessibilityService> accService =
do_GetService("@mozilla.org/accessibilityService;1");
accService->GetAccessibleFor(innerNode, getter_AddRefs(innerAccessible));
nsCOMPtr<nsPIAccessible> privateInnerAccessible =
do_QueryInterface(innerAccessible);
if (!privateInnerAccessible) {
return;
}
// Success getting inner document as first child -- now we cache it.
mAccChildCount = 1;
SetFirstChild(innerAccessible); // weak ref
privateInnerAccessible->SetParent(this);
privateInnerAccessible->SetNextSibling(nsnull);
}
void nsHTMLComboboxTextFieldAccessible::CacheChildren()
{
// Allow single text anonymous child, so that nsHyperTextAccessible can operate correctly
// We must override this otherwise we get the dropdown button as a child of the textfield,
// and at least for now we want to keep it as a sibling
if (!mWeakShell) {
// This node has been shut down
mAccChildCount = eChildCountUninitialized;
return;
}
// Allows only 1 child
if (mAccChildCount == eChildCountUninitialized) {
mAccChildCount = 0; // Prevent reentry
nsAccessibleTreeWalker walker(mWeakShell, mDOMNode, PR_TRUE);
// Seed the frame hint early while we're still on a container node.
// This is better than doing the GetPrimaryFrameFor() later on
// a text node, because text nodes aren't in the frame map.
walker.mState.frame = GetFrame();
walker.GetFirstChild();
SetFirstChild(walker.mState.accessible);
nsRefPtr<nsAccessible> child =
nsAccUtils::QueryAccessible(walker.mState.accessible);
child->SetParent(this);
child->SetNextSibling(nsnull);
mAccChildCount = 1;
}
}
void nsHTMLSelectOptGroupAccessible::CacheChildren()
{
if (!mWeakShell) {
// This node has been shut down
mAccChildCount = eChildCountUninitialized;
return;
}
if (mAccChildCount == eChildCountUninitialized) {
// XXX To do (bug 378612) - create text child for the anonymous attribute content, so that
// nsIAccessibleText is supported for the <optgroup> as it is for an <option>
// Attribute content is what layout creates for the label="foo" on the <optgroup>
// See eStyleContentType_Attr and CreateAttributeContent() in nsCSSFrameConstructor
mAccChildCount = 0;
SetFirstChild(nsnull);
}
}
void nsHTMLComboboxAccessible::CacheChildren()
{
if (!mWeakShell) {
// This node has been shut down
mAccChildCount = eChildCountUninitialized;
return;
}
if (mAccChildCount == eChildCountUninitialized) {
mAccChildCount = 0;
#ifdef COMBO_BOX_WITH_THREE_CHILDREN
// We no longer create textfield and button accessible, in order to have
// harmonization between IAccessible2, ATK/AT-SPI and OS X
nsHTMLComboboxTextFieldAccessible* textFieldAccessible =
new nsHTMLComboboxTextFieldAccessible(this, mDOMNode, mWeakShell);
SetFirstChild(textFieldAccessible);
if (!textFieldAccessible) {
return;
}
textFieldAccessible->SetParent(this);
textFieldAccessible->Init();
mAccChildCount = 1; // Textfield accessible child successfully added
nsHTMLComboboxButtonAccessible* buttonAccessible =
new nsHTMLComboboxButtonAccessible(mParent, mDOMNode, mWeakShell);
textFieldAccessible->SetNextSibling(buttonAccessible);
if (!buttonAccessible) {
return;
}
buttonAccessible->SetParent(this);
buttonAccessible->Init();
mAccChildCount = 2; // Button accessible child successfully added
#endif
nsIFrame *frame = GetFrame();
if (!frame) {
return;
}
nsIComboboxControlFrame *comboFrame = do_QueryFrame(frame);
if (!comboFrame) {
return;
}
nsIFrame *listFrame = comboFrame->GetDropDown();
if (!listFrame) {
return;
}
if (!mListAccessible) {
mListAccessible =
new nsHTMLComboboxListAccessible(mParent, mDOMNode, mWeakShell);
if (!mListAccessible)
return;
mListAccessible->Init();
}
#ifdef COMBO_BOX_WITH_THREE_CHILDREN
buttonAccessible->SetNextSibling(mListAccessible);
#else
SetFirstChild(mListAccessible);
#endif
mListAccessible->SetParent(this);
mListAccessible->SetNextSibling(nsnull);
++ mAccChildCount; // List accessible child successfully added
}
}
