Page Speed Optimization Libraries
1.4.26.1
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Public Member Functions | |
CriticalSelectorFilter (RewriteDriver *rewrite_driver) | |
virtual const char * | Name () const |
The name of this filter -- used for logging and debugging. | |
virtual const char * | id () const |
Static Public Attributes | |
static const char | kAddStylesScript [] |
static const char | kSummarizedCssProperty [] |
Protected Member Functions | |
virtual void | Summarize (Css::Stylesheet *stylesheet, GoogleString *out) const |
virtual void | SummariesDone () |
virtual GoogleString | CacheKeySuffix () const |
virtual void | NotifyInlineCss (HtmlElement *style_element, HtmlCharactersNode *content) |
virtual void | NotifyExternalCss (HtmlElement *link) |
virtual void | StartDocumentImpl () |
Parser callbacks. | |
virtual void | EndDocument () |
Note: EndDocument will be called imediately before the last Flush call. | |
virtual void | EndElementImpl (HtmlElement *element) |
virtual GoogleString net_instaweb::CriticalSelectorFilter::CacheKeySuffix | ( | ) | const [protected, virtual] |
Since our computation depends on the selectors that are relevant to the webpage, we incorporate them into the cache key as well.
Reimplemented from net_instaweb::CssSummarizerBase.
virtual void net_instaweb::CriticalSelectorFilter::NotifyInlineCss | ( | HtmlElement * | style_element, |
HtmlCharactersNode * | content | ||
) | [protected, virtual] |
Overrides of CssSummarizerBase CSS notification API. These hand us the entirety of CSS, so we can handle it with lower priority.
Reimplemented from net_instaweb::CssSummarizerBase.
virtual void net_instaweb::CriticalSelectorFilter::SummariesDone | ( | ) | [protected, virtual] |
This is called at the end of the document when all outstanding summary computations have completed, regardless of whether successful or not. It will not be called at all if they are still ongoing, however.
It's called from a context which allows HTML parser state access. You can insert things at end of document by constructing an HtmlNode* using the factories in HtmlParse and calling InjectSummaryData(element).
Implements net_instaweb::CssSummarizerBase.
virtual void net_instaweb::CriticalSelectorFilter::Summarize | ( | Css::Stylesheet * | stylesheet, |
GoogleString * | out | ||
) | const [protected, virtual] |
Overrides of CssSummarizerBase summary API. These help us compute the critical portions of the various fragments in the page, and to write them out to the property cache.
Implements net_instaweb::CssSummarizerBase.