зеркало из https://github.com/mozilla/gecko-dev.git
Bug 606082 - update accessible tree when root element is changed, r=marcoz, davidb, bz, a=blocking
This commit is contained in:
Alexander Surkov
Родитель
c22068623c
Коммит
a015a8fcc2
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@ -156,7 +156,7 @@ public:
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*/
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virtual nsINode* GetNode() const { return mContent; }
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nsIContent* GetContent() const { return mContent; }
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nsIDocument* GetDocumentNode() const
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virtual nsIDocument* GetDocumentNode() const
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{ return mContent ? mContent->GetOwnerDoc() : nsnull; }
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/**
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@ -477,55 +477,69 @@ nsAccessibilityService::ContentRangeInserted(nsIPresShell* aPresShell,
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nsIContent* aStartChild,
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nsIContent* aEndChild)
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{
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#ifdef DEBUG_A11Y
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#ifdef DEBUG_CONTENTMUTATION
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nsAutoString tag;
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aStartChild->Tag()->ToString(tag);
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nsIAtom* id = aStartChild->GetID();
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nsCAutoString strid;
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if (id)
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id->ToUTF8String(strid);
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nsIAtom* atomid = aStartChild->GetID();
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nsCAutoString id;
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if (atomid)
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atomid->ToUTF8String(id);
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nsAutoString ctag;
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nsCAutoString cid;
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nsIAtom* catomid = nsnull;
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if (aContainer) {
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aContainer->Tag()->ToString(ctag);
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nsIAtom* cid = aContainer->GetID();
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nsCAutoString strcid;
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if (cid)
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cid->ToUTF8String(strcid);
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catomid = aContainer->GetID();
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if (catomid)
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catomid->ToUTF8String(cid);
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}
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printf("\ncontent inserted: %s@id='%s', container: %s@id='%s', end node: %p\n\n",
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NS_ConvertUTF16toUTF8(tag).get(), strid.get(),
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NS_ConvertUTF16toUTF8(ctag).get(), strcid.get(), aEndChild);
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NS_ConvertUTF16toUTF8(tag).get(), id.get(),
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NS_ConvertUTF16toUTF8(ctag).get(), cid.get(), aEndChild);
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#endif
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// XXX: bug 606082. aContainer is null when root element is inserted into
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// document, we need to handle this and update the tree, also we need to
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// update a content node of the document accessible.
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if (aContainer) {
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nsDocAccessible* docAccessible = GetDocAccessible(aPresShell->GetDocument());
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if (docAccessible)
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docAccessible->UpdateTree(aContainer, aStartChild, aEndChild, PR_TRUE);
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}
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}
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void
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nsAccessibilityService::ContentRemoved(nsIPresShell* aPresShell,
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nsIContent* aContainer,
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nsIContent* aChild)
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{
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#ifdef DEBUG_A11Y
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nsAutoString id;
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aChild->Tag()->ToString(id);
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printf("\ncontent removed: %s\n", NS_ConvertUTF16toUTF8(id).get());
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#ifdef DEBUG_CONTENTMUTATION
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nsAutoString tag;
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aChild->Tag()->ToString(tag);
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nsIAtom* atomid = aChild->GetID();
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nsCAutoString id;
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if (atomid)
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atomid->ToUTF8String(id);
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nsAutoString ctag;
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nsCAutoString cid;
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nsIAtom* catomid = nsnull;
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if (aContainer) {
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aContainer->Tag()->ToString(ctag);
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catomid = aContainer->GetID();
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if (catomid)
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catomid->ToUTF8String(cid);
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}
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printf("\ncontent removed: %s@id='%s', container: %s@id='%s'\n\n",
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NS_ConvertUTF16toUTF8(tag).get(), id.get(),
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NS_ConvertUTF16toUTF8(ctag).get(), cid.get());
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#endif
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// XXX: bug 606082. aContainer is null when root element is inserted into
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// document, we need to handle this and update the tree, perhaps destroy
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// the document accessible.
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if (aContainer) {
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nsDocAccessible* docAccessible = GetDocAccessible(aPresShell->GetDocument());
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if (docAccessible)
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docAccessible->UpdateTree(aContainer, aChild, aChild->GetNextSibling(),
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PR_FALSE);
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}
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}
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void
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nsAccessibilityService::PresShellDestroyed(nsIPresShell *aPresShell)
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@ -285,8 +285,12 @@ nsDocAccessible::GetStateInternal(PRUint32 *aState, PRUint32 *aExtraState)
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return NS_OK_DEFUNCT_OBJECT;
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}
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if (aExtraState)
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*aExtraState = 0;
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if (aExtraState) {
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// The root content of the document might be removed so that mContent is
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// out of date.
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*aExtraState = (mContent->GetCurrentDoc() == mDocument) ?
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0 : nsIAccessibleStates::EXT_STATE_STALE;
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}
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#ifdef MOZ_XUL
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nsCOMPtr<nsIXULDocument> xulDoc(do_QueryInterface(mDocument));
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@ -1346,22 +1350,49 @@ nsDocAccessible::UpdateTree(nsIContent* aContainerNode,
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// Since this information may be not correct then we need to fire some events
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// regardless the document loading state.
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// Update the whole tree of this document accessible when the container is
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// null (document element is inserted or removed).
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nsCOMPtr<nsIPresShell> presShell = GetPresShell();
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nsIEventStateManager* esm = presShell->GetPresContext()->EventStateManager();
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PRBool fireAllEvents = PR_TRUE;//IsContentLoaded() || esm->IsHandlingUserInputExternal();
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// We don't create new accessibles on content removal.
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nsAccessible* container = aIsInsert ?
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GetAccService()->GetAccessibleOrContainer(aContainerNode, mWeakShell) :
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GetAccService()->GetCachedAccessibleOrContainer(aContainerNode);
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// XXX: bug 608887 reconsider accessible tree update logic because
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// 1) elements appended outside the HTML body don't get accessibles;
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// 2) the document having elements that should be accessible may function
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// without body.
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nsAccessible* container = nsnull;
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if (aIsInsert) {
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container = aContainerNode ?
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GetAccService()->GetAccessibleOrContainer(aContainerNode, mWeakShell) :
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this;
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// The document children were changed; the root content might be affected.
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if (container == this) {
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nsIContent* rootContent = nsCoreUtils::GetRoleContent(mDocument);
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// No root content (for example HTML document element was inserted but no
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// body). Nothing to update.
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if (!rootContent)
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return;
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// New root content has been inserted, update it and update the tree.
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if (rootContent != mContent)
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mContent = rootContent;
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}
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// XXX: Invalidate parent-child relations for container accessible and its
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// children because there's no good way to find insertion point of new child
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// accessibles into accessible tree. We need to invalidate children even
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// there's no inserted accessibles in the end because accessible children
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// are created while parent recaches child accessibles.
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container->InvalidateChildren();
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} else {
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// Don't create new accessibles on content removal.
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container = aContainerNode ?
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GetAccService()->GetCachedAccessibleOrContainer(aContainerNode) :
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this;
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}
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EIsFromUserInput fromUserInput = esm->IsHandlingUserInputExternal() ?
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@ -108,6 +108,7 @@ public:
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virtual nsIFrame* GetFrame();
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virtual PRBool IsDefunct();
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virtual nsINode* GetNode() const { return mDocument; }
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virtual nsIDocument* GetDocumentNode() const { return mDocument; }
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// nsAccessible
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virtual PRUint32 NativeRole();
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@ -38,6 +38,7 @@ const EXT_STATE_EXPANDABLE = nsIAccessibleStates.EXT_STATE_EXPANDABLE;
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const EXT_STATE_HORIZONTAL = nsIAccessibleStates.EXT_STATE_HORIZONTAL;
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const EXT_STATE_MULTI_LINE = nsIAccessibleStates.EXT_STATE_MULTI_LINE;
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const EXT_STATE_SINGLE_LINE = nsIAccessibleStates.EXT_STATE_SINGLE_LINE;
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const EXT_STATE_STALE = nsIAccessibleStates.EXT_STATE_STALE;
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const EXT_STATE_SUPPORTS_AUTOCOMPLETION =
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nsIAccessibleStates.EXT_STATE_SUPPORTS_AUTOCOMPLETION;
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const EXT_STATE_VERTICAL = nsIAccessibleStates.EXT_STATE_VERTICAL;
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@ -28,6 +28,7 @@
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testStates(docAcc, 0, EXT_STATE_EDITABLE);
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testStates("article", 0, EXT_STATE_EDITABLE);
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testStates("article", 0, EXT_STATE_EDITABLE);
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testStates("editable_article", 0, EXT_STATE_EDITABLE);
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document.designMode = "off";
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@ -46,6 +46,7 @@ include $(DEPTH)/config/autoconf.mk
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include $(topsrcdir)/config/rules.mk
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_TEST_FILES =\
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test_doc.html \
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test_list_editabledoc.html \
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test_list.html \
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test_recreation.html \
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@ -0,0 +1,370 @@
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<!DOCTYPE html>
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<html>
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<head>
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<title>Test document root content mutations</title>
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<link rel="stylesheet" type="text/css"
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href="chrome://mochikit/content/tests/SimpleTest/test.css" />
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<script type="application/javascript"
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src="chrome://mochikit/content/MochiKit/packed.js"></script>
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<script type="application/javascript"
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src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
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<script type="application/javascript"
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src="../common.js"></script>
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<script type="application/javascript"
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src="../role.js"></script>
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<script type="application/javascript"
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src="../states.js"></script>
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<script type="application/javascript"
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src="../events.js"></script>
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<script type="application/javascript">
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////////////////////////////////////////////////////////////////////////////
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// Helpers
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function getDocNode(aID)
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{
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return getNode(aID).contentDocument;
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}
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function getDocChildNode(aID)
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{
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return getDocNode(aID).body.firstChild;
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}
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function rootContentReplaced(aID, aTextName)
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{
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this.eventSeq = [
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new invokerChecker(EVENT_SHOW, getDocChildNode, aID),
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new invokerChecker(EVENT_REORDER, getDocNode, aID)
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];
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this.finalCheck = function rootContentReplaced_finalCheck()
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{
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var tree = {
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role: ROLE_DOCUMENT,
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children: [
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{
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role: ROLE_TEXT_LEAF,
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name: aTextName
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}
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]
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};
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testAccessibleTree(getDocNode(aID), tree);
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}
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}
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function rootContentRemoved(aID)
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{
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this.eventSeq = [
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new invokerChecker(EVENT_HIDE, null),
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new invokerChecker(EVENT_REORDER, getDocNode, aID)
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];
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this.preinvoke = function rootContentRemoved_preinvoke()
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{
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// Set up target for hide event before we invoke.
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var text = getAccessible(getAccessible(getDocNode(aID)).firstChild,
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[nsIAccessNode]).DOMNode;
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this.eventSeq[0].target = text;
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}
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this.finalCheck = function rootContentRemoved_finalCheck()
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{
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var tree = {
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role: ROLE_DOCUMENT,
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states: {
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// Out of date root content involves stale state presence.
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states: 0,
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extraStates: EXT_STATE_STALE
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},
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children: [ ]
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};
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testAccessibleTree(getDocNode(aID), tree);
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}
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}
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function rootContentInserted(aID, aTextName)
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{
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this.eventSeq = [
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new invokerChecker(EVENT_SHOW, getDocChildNode, aID),
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new invokerChecker(EVENT_REORDER, getDocNode, aID)
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];
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this.finalCheck = function rootContentInserted_finalCheck()
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{
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var tree = {
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role: ROLE_DOCUMENT,
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states: {
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states: 0,
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extraStates: 0,
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absentStates: 0,
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absentExtraStates: EXT_STATE_STALE
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},
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children: [
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{
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role: ROLE_TEXT_LEAF,
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name: aTextName
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}
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]
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};
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testAccessibleTree(getDocNode(aID), tree);
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}
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}
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////////////////////////////////////////////////////////////////////////////
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// Invokers
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function writeIFrameDoc(aID)
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{
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this.__proto__ = new rootContentReplaced(aID, "hello");
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this.invoke = function writeIFrameDoc_invoke()
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{
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var docNode = getDocNode(aID);
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// We can't use open/write/close outside of iframe document because of
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// security error.
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var script = docNode.createElement("script");
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script.textContent = "document.open(); document.write('hello'); document.close();";
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docNode.body.appendChild(script);
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}
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this.getID = function writeIFrameDoc_getID()
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{
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return "write document";
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}
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}
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/**
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* Replace HTML element.
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*/
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function replaceIFrameHTMLElm(aID)
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{
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this.__proto__ = new rootContentReplaced(aID, "New Wave");
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this.invoke = function replaceIFrameHTMLElm_invoke()
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{
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var docNode = getDocNode(aID);
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var newHTMLNode = docNode.createElement("html");
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var newBodyNode = docNode.createElement("body");
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var newTextNode = docNode.createTextNode("New Wave");
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newBodyNode.appendChild(newTextNode);
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newHTMLNode.appendChild(newBodyNode);
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docNode.replaceChild(newHTMLNode, docNode.documentElement);
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}
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this.getID = function replaceIFrameBody_getID()
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{
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return "replace HTML element";
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}
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}
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/**
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* Replace HTML body.
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*/
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function replaceIFrameBody(aID)
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{
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this.__proto__ = new rootContentReplaced(aID, "New Hello");
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this.invoke = function replaceIFrameBody_invoke()
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{
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var docNode = getDocNode(aID);
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var newBodyNode = docNode.createElement("body");
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var newTextNode = docNode.createTextNode("New Hello");
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newBodyNode.appendChild(newTextNode);
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docNode.documentElement.replaceChild(newBodyNode, docNode.body);
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}
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this.finalCheck = function replaceIFrameBody_finalCheck()
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{
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var tree = {
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role: ROLE_DOCUMENT,
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children: [
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{
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role: ROLE_TEXT_LEAF,
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name: "New Hello"
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}
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]
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};
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testAccessibleTree(getDocNode(aID), tree);
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}
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this.getID = function replaceIFrameBody_getID()
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{
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return "replace body";
|
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}
|
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}
|
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/**
|
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* Open/close document pair.
|
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*/
|
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function openIFrameDoc(aID)
|
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{
|
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this.__proto__ = new rootContentRemoved(aID);
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||||
|
||||
this.invoke = function openIFrameDoc_invoke()
|
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{
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this.preinvoke();
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// Open document.
|
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var docNode = getDocNode(aID);
|
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var script = docNode.createElement("script");
|
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script.textContent = "function closeMe() { document.write('Works?'); document.close(); } window.closeMe = closeMe; document.open();";
|
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docNode.body.appendChild(script);
|
||||
}
|
||||
|
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this.getID = function openIFrameDoc_getID()
|
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{
|
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return "open document";
|
||||
}
|
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}
|
||||
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||||
function closeIFrameDoc(aID)
|
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{
|
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this.__proto__ = new rootContentInserted(aID, "Works?");
|
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this.invoke = function closeIFrameDoc_invoke()
|
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{
|
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// Write and close document.
|
||||
getDocNode(aID).write('Works?'); getDocNode(aID).close();
|
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}
|
||||
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||||
this.getID = function closeIFrameDoc_getID()
|
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{
|
||||
return "close document";
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove/insert HTML element pair.
|
||||
*/
|
||||
function removeHTMLFromIFrameDoc(aID)
|
||||
{
|
||||
this.__proto__ = new rootContentRemoved(aID);
|
||||
|
||||
this.invoke = function removeHTMLFromIFrameDoc_invoke()
|
||||
{
|
||||
this.preinvoke();
|
||||
|
||||
// Remove HTML element.
|
||||
var docNode = getDocNode(aID);
|
||||
docNode.removeChild(docNode.firstChild);
|
||||
}
|
||||
|
||||
this.getID = function removeHTMLFromIFrameDoc_getID()
|
||||
{
|
||||
return "remove HTML element";
|
||||
}
|
||||
}
|
||||
|
||||
function insertHTMLToIFrameDoc(aID)
|
||||
{
|
||||
this.__proto__ = new rootContentInserted(aID, "Haha");
|
||||
|
||||
this.invoke = function insertHTMLToIFrameDoc_invoke()
|
||||
{
|
||||
// Insert HTML element.
|
||||
var docNode = getDocNode(aID);
|
||||
var html = docNode.createElement("html");
|
||||
var body = docNode.createElement("body");
|
||||
var text = docNode.createTextNode("Haha");
|
||||
body.appendChild(text);
|
||||
html.appendChild(body);
|
||||
docNode.appendChild(html);
|
||||
}
|
||||
|
||||
this.getID = function insertHTMLToIFrameDoc_getID()
|
||||
{
|
||||
return "insert HTML element document";
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove/insert HTML body pair.
|
||||
*/
|
||||
function removeBodyFromIFrameDoc(aID)
|
||||
{
|
||||
this.__proto__ = new rootContentRemoved(aID);
|
||||
|
||||
this.invoke = function removeBodyFromIFrameDoc_invoke()
|
||||
{
|
||||
this.preinvoke();
|
||||
|
||||
// Remove body element.
|
||||
var docNode = getDocNode(aID);
|
||||
docNode.documentElement.removeChild(docNode.body);
|
||||
}
|
||||
|
||||
this.getID = function removeBodyFromIFrameDoc_getID()
|
||||
{
|
||||
return "remove body element";
|
||||
}
|
||||
}
|
||||
|
||||
function insertBodyToIFrameDoc(aID)
|
||||
{
|
||||
this.__proto__ = new rootContentInserted(aID, "Yo ho ho i butylka roma!");
|
||||
|
||||
this.invoke = function insertBodyToIFrameDoc_invoke()
|
||||
{
|
||||
// Insert body element.
|
||||
var docNode = getDocNode(aID);
|
||||
var body = docNode.createElement("body");
|
||||
var text = docNode.createTextNode("Yo ho ho i butylka roma!");
|
||||
body.appendChild(text);
|
||||
docNode.documentElement.appendChild(body);
|
||||
}
|
||||
|
||||
this.getID = function insertBodyToIFrameDoc_getID()
|
||||
{
|
||||
return "insert body element";
|
||||
}
|
||||
}
|
||||
|
||||
////////////////////////////////////////////////////////////////////////////
|
||||
// Test
|
||||
|
||||
//gA11yEventDumpID = "eventdump"; // debug stuff
|
||||
|
||||
var gQueue = null;
|
||||
|
||||
function doTest()
|
||||
{
|
||||
gQueue = new eventQueue();
|
||||
|
||||
gQueue.push(new writeIFrameDoc("iframe"));
|
||||
gQueue.push(new replaceIFrameHTMLElm("iframe"));
|
||||
gQueue.push(new replaceIFrameBody("iframe"));
|
||||
gQueue.push(new openIFrameDoc("iframe"));
|
||||
gQueue.push(new closeIFrameDoc("iframe"));
|
||||
gQueue.push(new removeHTMLFromIFrameDoc("iframe"));
|
||||
gQueue.push(new insertHTMLToIFrameDoc("iframe"));
|
||||
gQueue.push(new removeBodyFromIFrameDoc("iframe"));
|
||||
gQueue.push(new insertBodyToIFrameDoc("iframe"));
|
||||
|
||||
gQueue.invoke(); // SimpleTest.finish() will be called in the end
|
||||
}
|
||||
|
||||
SimpleTest.waitForExplicitFinish();
|
||||
addA11yLoadEvent(doTest);
|
||||
</script>
|
||||
</head>
|
||||
<body>
|
||||
|
||||
<a target="_blank"
|
||||
title="Update accessible tree when root element is changed"
|
||||
href="https://bugzilla.mozilla.org/show_bug.cgi?id=606082">Mozilla Bug 606082</a>
|
||||
|
||||
<p id="display"></p>
|
||||
<div id="content" style="display: none"></div>
|
||||
<pre id="test">
|
||||
</pre>
|
||||
|
||||
<iframe id="iframe"></iframe>
|
||||
|
||||
<div id="eventdump"></div>
|
||||
</body>
|
||||
</html>
|
||||
|
|
@ -6898,6 +6898,17 @@ nsCSSFrameConstructor::ContentRangeInserted(nsIContent* aContainer,
|
|||
#endif
|
||||
}
|
||||
|
||||
#ifdef ACCESSIBILITY
|
||||
if (mPresShell->IsAccessibilityActive()) {
|
||||
nsCOMPtr<nsIAccessibilityService> accService =
|
||||
do_GetService("@mozilla.org/accessibilityService;1");
|
||||
if (accService) {
|
||||
accService->ContentRangeInserted(mPresShell, aContainer,
|
||||
aStartChild, aEndChild);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
|
|
|
|||
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