de.lmu.ifi.dbs.elki.visualization.css

Class CSSClassManager

java.lang.Object

de.lmu.ifi.dbs.elki.visualization.css.CSSClassManager

public class CSSClassManager
extends Object

Manager class to track CSS classes used in a particular SVG document.

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	CSSClassManager.CSSNamingConflict Class to signal a CSS naming conflict.

Field Summary

Fields

Modifier and Type	Field and Description
private HashMap<String,CSSClass>	store Store the contained CSS classes.

Constructor Summary

Constructors

Constructor and Description
CSSClassManager()

Method Summary

Modifier and Type	Method and Description
CSSClass	addClass(CSSClass clss) Add a single class to the map.
boolean	contains(String name) Check if a name is already used in the classes.
CSSClass	getClass(String name) Retrieve a single class by name only
CSSClass	getClass(String name, Object owner) Retrieve a single class by name and owner
Collection<CSSClass>	getClasses() Get all CSS classes in this manager.
Element	makeStyleElement(Document document) Make a (filled) CSS style element for the given document.
boolean	mergeCSSFrom(CSSClassManager other) Merge CSS classes, for example to merge two plots.
void	removeClass(CSSClass clss) Remove a single CSS class from the map.
void	serialize(StringBuilder buf) Serialize managed CSS classes to rule file.
boolean	testMergeable(CSSClassManager other) Check whether or not CSS classes of two plots can be merged
void	updateStyleElement(Document document, Element style) Update the text contents of an existing style element.

Methods inherited from class java.lang.Object

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

Field Detail

store

private HashMap<String,CSSClass> store

Store the contained CSS classes.

Constructor Detail

CSSClassManager

public CSSClassManager()

Method Detail

addClass

public CSSClass addClass(CSSClass clss)
                  throws CSSClassManager.CSSNamingConflict

Add a single class to the map.

Parameters:

clss - new CSS class

Returns:

existing (old) class

Throws:

CSSClassManager.CSSNamingConflict - when a class of the same name but different owner object exists.

removeClass

public void removeClass(CSSClass clss)

Remove a single CSS class from the map. Note that classes are removed by reference, not by name!

Parameters:

clss - Class to remove

getClass

public CSSClass getClass(String name,
                         Object owner)
                  throws CSSClassManager.CSSNamingConflict

Retrieve a single class by name and owner

Parameters:

name - Class name

owner - Class owner

Returns:

existing (old) class

Throws:

CSSClassManager.CSSNamingConflict - if an owner was specified and doesn't match

getClass

public CSSClass getClass(String name)

Retrieve a single class by name only

Parameters:

name - CSS class name

Returns:

existing (old) class

contains

public boolean contains(String name)

Check if a name is already used in the classes.

Parameters:

name - CSS class name

Returns:

true if the class name is already used.

serialize

public void serialize(StringBuilder buf)

Serialize managed CSS classes to rule file.

Parameters:

buf - String buffer

getClasses

public Collection<CSSClass> getClasses()

Get all CSS classes in this manager.

Returns:

CSS classes.

testMergeable

public boolean testMergeable(CSSClassManager other)

Check whether or not CSS classes of two plots can be merged

Parameters:

other - Other class

Returns:

true if able to merge

mergeCSSFrom

public boolean mergeCSSFrom(CSSClassManager other)
                     throws CSSClassManager.CSSNamingConflict

Merge CSS classes, for example to merge two plots.

Parameters:

other - Other class to merge with

Returns:

success code

Throws:

CSSClassManager.CSSNamingConflict - If there is a naming conflict.

updateStyleElement

public void updateStyleElement(Document document,
                               Element style)

Update the text contents of an existing style element.

Parameters:

document - Document element (factory)

style - Style element

makeStyleElement

public Element makeStyleElement(Document document)

Make a (filled) CSS style element for the given document.

Parameters:

document - Document

Returns:

Style element