tree 13ed4f7f40099c2a9adbb4a2b2c391e843ffc25a
parent 40de454ca90a5c522319235f8dc093be1a9e7fce
author commit-queue@webkit.org <commit-queue@webkit.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1349195323 +0000
committer commit-queue@webkit.org <commit-queue@webkit.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc> 1349195323 +0000

[Shadow] ShadowRoot should know whether <shadow> in its treescope
https://bugs.webkit.org/show_bug.cgi?id=97184

Patch by Takashi Sakamoto <tasak@google.com> on 2012-10-02
Reviewed by Dimitri Glazkov.

Source/WebCore:

To quickly know whether some shadow dom subtree has any shadow element
or not, added hasShadowRootInsertionPoint, registerShadowElement and
unregisterShadowElement to class ShadowRoot. The register method or
unregister method is used when a shadow element is inserted into
document or removed from document. hasShadowInsertionPoint returns true
if any shadow element is still registered with the given shadow root.
Otherwise returns false. To test hasShadowInsertionPoint, added
hasShadowInsertionPoint to Internals.

Test: fast/dom/shadow/has-shadow-insertion-point.html

* dom/ShadowRoot.cpp:
(WebCore::ShadowRoot::ShadowRoot):
Initializes number of shadow elements.
* dom/ShadowRoot.h:
(WebCore::ShadowRoot::registerShadowElement):
Increases number of shadow elements in shadow dom subtree by 1.
(WebCore::ShadowRoot::unregisterShadowElement):
Decreases number of shadow elements in shadow dom subtree by 1.
(WebCore::ShadowRoot::hasShadowInsertionPoint):
If number of shadow elements in shadow dom subtree is not equal to 0,
returns true. Otherwise, returns false.
* html/shadow/HTMLShadowElement.cpp:
(WebCore::HTMLShadowElement::HTMLShadowElement):
(WebCore::HTMLShadowElement::insertedInto):
If a shadow element is inserted into document, register the shadow
element with its shadow root.
(WebCore::HTMLShadowElement::removedFrom):
 If a shadow element is removed from document, unregister the shadow
element with its shadow root.
* html/shadow/HTMLShadowElement.h:
Added a new member variable which has information about whether
this shadow element has been already registered with its shadow root
or not.
* testing/Internals.cpp:
(WebCore::Internals::hasShadowInsertionPoint):
Added a new testing method which returns whether the given shadow
root has any shadow element or not.
* testing/Internals.h:
(Internals):
* testing/Internals.idl:

LayoutTests:

* fast/dom/shadow/has-shadow-insertion-point-expected.txt: Added.
* fast/dom/shadow/has-shadow-insertion-point.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk/LayoutTests@130177 268f45cc-cd09-0410-ab3c-d52691b4dbfc