Module com.github.librepdf.openpdf.parent

Package org.openpdf.context

Class StylesheetFactoryImpl

java.lang.Object

org.openpdf.context.StylesheetFactoryImpl

All Implemented Interfaces:

StylesheetFactory

public class StylesheetFactoryImpl
extends Object
implements StylesheetFactory

A Factory class for Cascading Style Sheets. Sheets are parsed using a single parser instance for all sheets. Sheets are cached by URI using LRU test, but timestamp of file is not checked.

Author:

Torbjoern Gannholm

Constructor Summary

Constructors

Constructor	Description
StylesheetFactoryImpl(UserAgentCallback userAgentCallback)

Method Summary

Modifier and Type	Method	Description
boolean	containsStylesheet(String key)
@Nullable Stylesheet	getStylesheet(StylesheetInfo info)	Returns a cached sheet by its key; loads and caches it if not in cache; null if not able to load
Stylesheet	parse(Reader reader, String uri, StylesheetInfo.Origin origin)
Stylesheet	parse(Reader reader, StylesheetInfo info)
Ruleset	parseStyleDeclaration(StylesheetInfo.Origin origin, String styleDeclaration)
void	putStylesheet(String key, Stylesheet sheet)	Adds a stylesheet to the factory cache.
void	removeCachedStylesheet(String key)	Removes a cached sheet by its key.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

StylesheetFactoryImpl

public StylesheetFactoryImpl(UserAgentCallback userAgentCallback)

Method Details

parse

public Stylesheet parse(Reader reader,
 StylesheetInfo info)

Specified by:

parse in interface StylesheetFactory

parse

public Stylesheet parse(Reader reader,
 String uri,
 StylesheetInfo.Origin origin)

Specified by:

parse in interface StylesheetFactory

parseStyleDeclaration

public Ruleset parseStyleDeclaration(StylesheetInfo.Origin origin,
 String styleDeclaration)

Specified by:

parseStyleDeclaration in interface StylesheetFactory

putStylesheet

public void putStylesheet(String key,
 Stylesheet sheet)

Adds a stylesheet to the factory cache. Will overwrite older entry for same key.

Parameters:

key - Key to use to reference sheet later; must be unique in factory.

sheet - The sheet to cache.

containsStylesheet

public boolean containsStylesheet(String key)

Returns:

true if a Stylesheet with this key has been put in the cache. Note that the Stylesheet may be null.

removeCachedStylesheet

public void removeCachedStylesheet(String key)

Removes a cached sheet by its key.

Parameters:

key - The key for this sheet; same as key passed to putStylesheet();

getStylesheet

@CheckReturnValue
public @Nullable Stylesheet getStylesheet(StylesheetInfo info)

Returns a cached sheet by its key; loads and caches it if not in cache; null if not able to load

Specified by:

getStylesheet in interface StylesheetFactory

Parameters:

info - The StylesheetInfo for this sheet

Returns:

The stylesheet