2011-05-14 Ryosuke Niwa <rniwa@webkit.org>
Reviewed by Eric Seidel.
Make canHaveChildrenForEditing more efficient
https://bugs.webkit.org/show_bug.cgi?id=53564
Improved the performance (1-2% in release and 20% in debug) by adding virtual member function
canContainRangeEndPoint to Node. It returns true whenever the associated node can have be a container
node for a position.
As of this revision, canContainRangeEndPoint returns true on Document, DocumentFragment, Text nodes
and any elements except:
HTML: applet, br, embed, frame, frameset, hr (unless has children), img, input, keygen,
meter, object (unless uses fallback content), output, progress, select, and textarea.
No new tests are added since this change cannot be tested directly.
* dom/Document.h:
(WebCore::Document::canContainRangeEndPoint): Added; returns false.
* dom/DocumentFragment.h:
(WebCore::DocumentFragment::canContainRangeEndPoint): Added; returns true.
* dom/Element.h:
(WebCore::Element::canContainRangeEndPoint): Ditto.
* dom/Node.h:
(WebCore::Node::canContainRangeEndPoint): Added; returns false.
* dom/Text.h:
(WebCore::Text::canContainRangeEndPoint): Added; returns true.
* editing/htmlediting.cpp: Removed editingIgnoresContent and canHaveChildrenForEditing.
* editing/htmlediting.h:
(WebCore::editingIgnoresContent): Moved from htmlediting.cpp; made it inline.
(WebCore::canHaveChildrenForEditing): Ditto.
* html/HTMLBRElement.h:
(WebCore::HTMLBRElement::canContainRangeEndPoint): Added; returns false.
* html/HTMLButtonElement.h:
(WebCore::HTMLDataGridElement::canContainRangeEndPoint): Ditto.
* html/HTMLFormControlElement.h:
(WebCore::HTMLFormControlElementWithState::canContainRangeEndPoint): Ditto.
* html/HTMLFrameElementBase.h:
(WebCore::HTMLFrameElementBase::canContainRangeEndPoint): Ditto.
* html/HTMLImageElement.h:
(WebCore::HTMLImageElement::canContainRangeEndPoint): Ditto.
* html/HTMLMeterElement.h:
(WebCore::HTMLMeterElement::canContainRangeEndPoint): Ditto.
* html/HTMLOutputElement.h:
(WebCore::HTMLOutputElement::canContainRangeEndPoint): Ditto.
* html/HTMLPlugInElement.h:
(WebCore::HTMLPlugInElement::canContainRangeEndPoint): Ditto.
* html/HTMLProgressElement.h:
(WebCore::HTMLProgressElement::canContainRangeEndPoint): Ditto.
* html/HTMLHRElement.h:
(WebCore::HTMLHRElement::canContainRangeEndPoint): Added; returns true iff it has children.
* html/HTMLObjectElement.h:
(WebCore::HTMLObjectElement::canContainRangeEndPoint): Added; returns true iff it uses fallback
content.
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@86491 268f45cc-cd09-0410-ab3c-d52691b4dbfc
18 files changed
