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Bug 342035. Create accessibles for all block level elements so that ATs can determine line spacing. r=ginn.chen, sr=neil, sr=roc

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aaronleventhal%moonset.net 2006-07-11 22:14:09 +00:00
parent 29bbce1d33
commit 99b585f939
1 changed files with 23 additions and 2 deletions
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25
layout/generic/nsBlockFrame.cpp
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@ -83,6 +83,7 @@
#include "nsIServiceManager.h"
#include "nsIScrollableFrame.h"
#ifdef ACCESSIBILITY
#include "nsIDOMHTMLDocument.h"
#include "nsIAccessibilityService.h"
#endif
#include "nsLayoutUtils.h"
@ -6553,16 +6554,36 @@ NS_IMETHODIMP nsBlockFrame::GetAccessible(nsIAccessible** aAccessible)
do_GetService("@mozilla.org/accessibilityService;1");
NS_ENSURE_TRUE(accService, NS_ERROR_FAILURE);
// treat <hr> as block element instead of inline.
// block frame may be for <hr>
if (mContent->Tag() == nsHTMLAtoms::hr) {
return accService->CreateHTMLHRAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
}
nsPresContext *aPresContext = GetPresContext();
if (!mBullet || !aPresContext) {
return NS_ERROR_FAILURE;
if (!mContent || !mContent->GetParent()) {
// Don't create accessible objects for the root content node, they are redundant with
// the nsDocAccessible object created with the document node
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc =
do_QueryInterface(mContent->GetDocument());
if (htmlDoc) {
nsCOMPtr<nsIDOMHTMLElement> body;
htmlDoc->GetBody(getter_AddRefs(body));
if (SameCOMIdentity(body, mContent)) {
// Don't create accessible objects for the body, they are redundant with
// the nsDocAccessible object created with the document node
return NS_ERROR_FAILURE;
}
}
// Not a bullet, treat as normal HTML container
return accService->CreateHyperTextAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible);
}
// Create special list bullet accessible
const nsStyleList* myList = GetStyleList();
nsAutoString bulletText;
if (myList->mListStyleImage || myList->mListStyleType == NS_STYLE_LIST_STYLE_DISC ||