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.

Field Summary

Fields

Modifier and Type	Field	Description
private final Map<String, Stylesheet>	_cache	an LRU cache
private final CSSParser	_cssParser
private UserAgentCallback	_userAgentCallback	the UserAgentCallback to resolve uris

Constructor Summary

Constructors

Constructor	Description
StylesheetFactoryImpl(UserAgentCallback userAgentCallback)

Method Summary

Modifier and Type	Method	Description
boolean	containsStylesheet(String key)
(package private) void	flushCachedStylesheets()
@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)
private @Nullable Stylesheet	parse(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.
(package private) void	setSupportCMYKColors(boolean b)
(package private) void	setUserAgentCallback(UserAgentCallback userAgent)

Methods inherited from class Object

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

Field Details

_userAgentCallback

private UserAgentCallback _userAgentCallback

the UserAgentCallback to resolve uris

_cache

private final Map<String, Stylesheet> _cache

an LRU cache

_cssParser

private final CSSParser _cssParser

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

parse

private @Nullable Stylesheet parse(StylesheetInfo info)

Returns:

Returns null if uri could not be loaded

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();

flushCachedStylesheets

void flushCachedStylesheets()

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

setUserAgentCallback

void setUserAgentCallback(UserAgentCallback userAgent)

setSupportCMYKColors

void setSupportCMYKColors(boolean b)