Page Speed Optimization Libraries  1.12.34.1
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net_instaweb::CssInlineImportToLinkFilter Class Reference

#include "css_inline_import_to_link_filter.h"

Inheritance diagram for net_instaweb::CssInlineImportToLinkFilter:
net_instaweb::EmptyHtmlFilter net_instaweb::HtmlFilter

Public Member Functions

 CssInlineImportToLinkFilter (RewriteDriver *driver, Statistics *statistics)
 
virtual void StartDocument ()
 
virtual void EndDocument ()
 
virtual void StartElement (HtmlElement *element)
 
virtual void EndElement (HtmlElement *element)
 
virtual void Flush ()
 
virtual void Characters (HtmlCharactersNode *characters)
 HTML Events we expect to be in a <style> element.
 
virtual const char * Name () const
 The name of this filter – used for logging and debugging.
 
- 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 IEDirective (HtmlIEDirectiveNode *directive)
 
virtual void Directive (HtmlDirectiveNode *directive)
 Called for HTML directives (e.g. <!doctype foobar>).
 
virtual void DetermineEnabled (GoogleString *disabled_reason)
 
virtual bool CanModifyUrls ()
 
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)
 

Additional Inherited Members

- Public Types inherited from net_instaweb::HtmlFilter
enum  ScriptUsage { kWillInjectScripts, kMayInjectScripts, kNeverInjectsScripts }
 Describes a filter's relationship with scripts. More...
 

Detailed Description

Filter to rewrite style tags of the form: <style type="text/css" ...> url(URL1); url(URL2); foobar </style> to <link type="text/css" ... rel="stylesheet" href="URL1"/> <link type="text/css" ... rel="stylesheet" href="URL2"/> <style type="text/css" ...> foobar </style>

Member Function Documentation

virtual void net_instaweb::CssInlineImportToLinkFilter::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::CssInlineImportToLinkFilter::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::CssInlineImportToLinkFilter::StartDocument ( )
virtual

Starts a new document. Filters should clear their state in this function, as the same Filter instance may be used for multiple HTML documents.

Reimplemented from net_instaweb::EmptyHtmlFilter.

virtual void net_instaweb::CssInlineImportToLinkFilter::StartElement ( HtmlElement element)
virtual

When an HTML element is encountered during parsing, each filter's StartElement method is called. The HtmlElement lives for the entire duration of the document.

Todo:
TODO(jmarantz): consider passing handles rather than pointers and reference-counting them instead to save memory on long documents.

Reimplemented from net_instaweb::EmptyHtmlFilter.


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