Page Speed Optimization Libraries  1.12.34.1
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Pages
Public Member Functions | Static Public Member Functions | Static Public Attributes | List of all members
net_instaweb::CssCombineFilter Class Reference
Inheritance diagram for net_instaweb::CssCombineFilter:
net_instaweb::RewriteFilter net_instaweb::CommonFilter net_instaweb::EmptyHtmlFilter net_instaweb::HtmlFilter

Public Member Functions

 CssCombineFilter (RewriteDriver *rewrite_driver)
 
virtual void StartDocumentImpl ()
 
virtual void EndDocument ()
 
virtual void StartElementImpl (HtmlElement *element)
 
virtual void EndElementImpl (HtmlElement *element)
 
virtual void Flush ()
 
virtual void DetermineEnabled (GoogleString *disabled_reason)
 
virtual void IEDirective (HtmlIEDirectiveNode *directive)
 
virtual const char * Name () const
 The name of this filter – used for logging and debugging.
 
virtual const UrlSegmentEncoderencoder () const
 
virtual RewriteContextMakeRewriteContext ()
 
virtual const char * id () const
 
- Public Member Functions inherited from net_instaweb::RewriteFilter
 RewriteFilter (RewriteDriver *driver)
 
virtual bool CanModifyUrls ()
 
virtual bool ComputeOnTheFly () const
 
virtual RewriteContextMakeNestedRewriteContext (RewriteContext *parent, const ResourceSlotPtr &slot)
 
virtual void EncodeUserAgentIntoResourceContext (ResourceContext *context) const
 
virtual const
RewriteOptions::Filter
RelatedFilters (int *num_filters) const
 
virtual const StringPieceVector * RelatedOptions () const
 
- Public Member Functions inherited from net_instaweb::CommonFilter
 CommonFilter (RewriteDriver *driver)
 
const GoogleUrlbase_url () const
 Getters. More...
 
const GoogleUrldecoded_base_url () const
 
RewriteDriverdriver () const
 
HtmlElementnoscript_element () const
 
void InsertNodeAtBodyEnd (HtmlNode *data)
 
virtual void StartDocument ()
 Note: Don't overload these methods, overload the implementers instead!
 
virtual void StartElement (HtmlElement *element)
 
virtual void EndElement (HtmlElement *element)
 
virtual void Characters (HtmlCharactersNode *characters)
 
ResourcePtr CreateInputResource (StringPiece input_url, bool *is_authorized)
 
ResourcePtr CreateInputResourceOrInsertDebugComment (StringPiece input_url, HtmlElement *element)
 
void ResolveUrl (StringPiece input_url, GoogleUrl *out_url)
 
bool BaseUrlIsValid () const
 
bool DebugMode () const
 
bool CanAddPagespeedOnloadToImage (const HtmlElement &)
 
virtual void LogFilterModifiedContent ()
 
virtual
RewriteDriver::InlineAuthorizationPolicy 
AllowUnauthorizedDomain () const
 
virtual bool IntendedForInlining () const
 
void AddJsToElement (StringPiece js, HtmlElement *script)
 
- Public Member Functions inherited from net_instaweb::EmptyHtmlFilter
virtual void Cdata (HtmlCdataNode *cdata)
 Called for CDATA blocks (e.g. <![CDATA[foobar]]>)
 
virtual void Comment (HtmlCommentNode *comment)
 Called for HTML comments that aren't IE directives (e.g. ).
 
virtual void Directive (HtmlDirectiveNode *directive)
 Called for HTML directives (e.g. <!doctype foobar>).
 
ScriptUsage GetScriptUsage () const override
 
- Public Member Functions inherited from net_instaweb::HtmlFilter
virtual void RenderDone ()
 
bool is_enabled () const
 
void set_is_enabled (bool is_enabled)
 

Static Public Member Functions

static void InitStats (Statistics *statistics)
 
- Static Public Member Functions inherited from net_instaweb::RewriteFilter
static StringPiece GetCharsetForScript (const Resource *script, const StringPiece attribute_charset, const StringPiece enclosing_charset)
 
static GoogleString GetCharsetForStylesheet (const Resource *stylesheet, const StringPiece attribute_charset, const StringPiece enclosing_charset)
 
- Static Public Member Functions inherited from net_instaweb::CommonFilter
static bool ExtractMetaTagDetails (const HtmlElement &element, const ResponseHeaders *headers, GoogleString *content, GoogleString *mime_type, GoogleString *charset)
 

Static Public Attributes

static const char kCssCombineOpportunities []
 
static const char kCssFileCountReduction []
 CSS file reduction (Optimally this equals kCssCombineOpportunities).
 
- Static Public Attributes inherited from net_instaweb::CommonFilter
static const char kCreateResourceFailedDebugMsg []
 Debug message to be inserted when resource creation fails.
 

Additional Inherited Members

- Public Types inherited from net_instaweb::HtmlFilter
enum  ScriptUsage { kWillInjectScripts, kMayInjectScripts, kNeverInjectsScripts }
 Describes a filter's relationship with scripts. More...
 
- Protected Member Functions inherited from net_instaweb::RewriteFilter
virtual const char * LoggingId ()
 This class logs using id().
 
- Protected Member Functions inherited from net_instaweb::CommonFilter
ServerContextserver_context () const
 
const RewriteOptionsrewrite_options ()
 

Member Function Documentation

virtual void net_instaweb::CssCombineFilter::DetermineEnabled ( GoogleString disabled_reason)
virtual

Override DetermineEnabled so that filters that use the DOM cohort of the property cache can enable writing of it in the RewriterDriver. Filters inheriting from RewriteDriver that use the DOM cohort should override UsePropertyCacheDomCohort to return true.

Reimplemented from net_instaweb::RewriteFilter.

virtual const UrlSegmentEncoder* net_instaweb::CssCombineFilter::encoder ( ) const
inlinevirtual

All RewriteFilters define how they encode URLs and other associated information needed for a rewrite into a URL. The default implementation handles a single URL with no extra data. The filter owns the encoder.

Reimplemented from net_instaweb::RewriteFilter.

virtual void net_instaweb::CssCombineFilter::EndDocument ( )
virtual

Note: EndDocument will be called immediately before the last Flush call. (which also means that in the RewriteDriver use it is called before rendering for the last flush window).

Reimplemented from net_instaweb::EmptyHtmlFilter.

virtual void net_instaweb::CssCombineFilter::Flush ( )
virtual

Notifies the Filter that a flush is occurring. A filter that's generating streamed output should flush at this time. A filter that's mutating elements can mutate any element seen since the most recent flush; once an element is flushed it is already on the wire to its destination and it's too late to mutate. Flush is initiated by an application calling HttpParse::Flush().

Flush() is called after all other handlers during a HttpParse::Flush(), except RenderDone(), which (if in use) happens after Flush().

Reimplemented from net_instaweb::EmptyHtmlFilter.

virtual void net_instaweb::CssCombineFilter::IEDirective ( HtmlIEDirectiveNode directive)
virtual

Called for an IE directive; typically used for CSS styling. See http://msdn.microsoft.com/en-us/library/ms537512(VS.85).aspx

Todo:
TODO(mdsteele): Should we try to maintain the nested structure of the conditionals, in the same way that we maintain nesting of elements?

Reimplemented from net_instaweb::EmptyHtmlFilter.

virtual RewriteContext* net_instaweb::CssCombineFilter::MakeRewriteContext ( )
virtual

Generates a RewriteContext appropriate for this filter. Default implementation returns NULL. This must be overridden by filters. This is used to implement Fetch.

Reimplemented from net_instaweb::RewriteFilter.

virtual void net_instaweb::CssCombineFilter::StartDocumentImpl ( )
virtual

Overload these implementer methods: Intentionally left abstract so that implementers don't forget to change the name from Blah to BlahImpl.

Implements net_instaweb::CommonFilter.

Member Data Documentation

const char net_instaweb::CssCombineFilter::kCssCombineOpportunities[]
static

Statistic names:

of CSS links which could ideally have been reduced (# CSS links on

original page - 1 for each page).


The documentation for this class was generated from the following file: