cz.vutbr.web.css.SupportedCSS Maven / Gradle / Ivy
package cz.vutbr.web.css;
import java.util.Set;
/**
* Encapsulates supported CSS properties, their types and default values.
* Implementations should provide reasonable User Agent defaults.
*
* @author kapy
*
*/
public interface SupportedCSS {
/**
* Returns total number of properties defined
* @return total number of properties defined
*/
int getTotalProperties();
/**
* Returns names of defined properties
* @return Set with name of defined properties
*/
Set getDefinedPropertyNames();
/**
* Checks whether media type is supported
* @param media Name of media, such as screen
* @return true if supported, false otherwise
*/
boolean isSupportedMedia(String media);
/**
* Checks whether property is supported
* @param property Name of CSS property
* @return true if supported, false otherwise
*/
boolean isSupportedCSSProperty(String property);
/**
* Return default value of CSSProperty under given name
* @param propertyName Name of CSSProperty
* @return Default value of CSSProperty or null
* when property with this name is not found
*/
CSSProperty getDefaultProperty(String propertyName);
/**
* Some CSSProperties have even additional values. When this
* happens, this functions could be used to retrieve that value.
*
* Example: property background-position,
* has default value of list with two percentages 0% 0%
*
* @param propertyName Name of CSSProperty
* @return Default value or CSSProperty's value or null
* when property with this name is not found
*/
Term getDefaultValue(String propertyName);
/**
* For testing, this should get name of randomly chosen CSSProperty.
* @return Name of CSSProperty
*/
String getRandomPropertyName();
/**
* Returns ordinal number of propertyName. This number must be positive integer.
* This value should be unique with supported properties
* @param propertyName Name of property
* @return ordinal number in property was found, -1 elsewhere
*/
int getOrdinal(String propertyName);
/**
* Returns property name according to ordinal number
* @param o Ordinal number previously retrieved by getOrdinal()
* @return Name of property or null if not found
*/
String getPropertyName(int o);
}