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com.sun.javafx.css.media.expression

public final Class FunctionExpression<T>

extends Object
implements MediaQuery
Class Inheritance
All Implemented Interfaces
com.sun.javafx.css.media.MediaQuery
Imports
com.sun.javafx.css.media.ContextAwareness, .MediaQuery, .MediaQueryCache, .MediaQueryContext, .TriState, java.util.Objects, java.util.function.Function, .Supplier
Evaluates to true if the return value of the specified function is equal to value.

Field Summary

Modifier and TypeField and Description
private final int
contextAwareness

private final Supplier<TriState>
contextFreeFunction

private final String
featureName

private final String
featureValue

private final Function<MediaQueryContext, T>
function

private final T
value

Constructor Summary

AccessConstructor and Description
private
FunctionExpression(String featureName, String featureValue, Supplier<TriState> contextFreeFunction, Function<MediaQueryContext, T> function, T value, ContextAwareness... contextAwareness)

Method Summary

Modifier and TypeMethod and Description
public boolean
equals(Object obj)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

public TriState
evaluate()

Implements com.sun.javafx.css.media.MediaQuery.evaluate.

Attempts to determine the result of this media query without a context, and returns TriState#TRUE if the query always matches, TriState#FALSE if it never matches, or TriState#UNKNOWN if the result depends on the context or cannot be determined.

public boolean
evaluate(MediaQueryContext context)

Implements com.sun.javafx.css.media.MediaQuery.evaluate.

Evaluates this media query against the provided context.

public int
getContextAwareness()

Implements com.sun.javafx.css.media.MediaQuery.getContextAwareness.

Gets the context awareness flags of this media query, indicating which aspects of the media query context are probed by the query.

public String
getFeatureName()

public String
getFeatureValue()

public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for this object.

public static <T> FunctionExpression<T>
of(String
the feature name
featureName, String
the feature value, or null to indicate a boolean context
featureValue, Function<MediaQueryContext, T>
the evaluation function
function, T
the expected return value of the function
value, ContextAwareness...
the context awareness of the function, see MediaQuery#getContextAwareness()
contextAwareness)

Returns an interned FunctionExpression.

public static <T> FunctionExpression<T>
of(String
the feature name
featureName, String
the feature value, or null to indicate a boolean context
featureValue, Supplier<TriState>
the context-free evaluation function, must never return null
contextFreeFunction, Function<MediaQueryContext, T>
the evaluation function
function, T
the expected return value of the function
value, ContextAwareness...
the context awareness of the function, see MediaQuery#getContextAwareness()
contextAwareness)

Returns an interned FunctionExpression.

public String
toString()

Overrides java.lang.Object.toString.

Returns a string representation of the object.

Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAllwaitwaitwait

Field Detail

contextAwarenessback to summary
private final int contextAwareness
contextFreeFunctionback to summary
private final Supplier<TriState> contextFreeFunction
featureNameback to summary
private final String featureName
featureValueback to summary
private final String featureValue
functionback to summary
private final Function<MediaQueryContext, T> function
valueback to summary
private final T value

Constructor Detail

FunctionExpressionback to summary
private FunctionExpression(String featureName, String featureValue, Supplier<TriState> contextFreeFunction, Function<MediaQueryContext, T> function, T value, ContextAwareness... contextAwareness)

Method Detail

equalsback to summary
public boolean equals(Object obj)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Annotations
@Override
evaluateback to summary
public TriState evaluate()

Implements com.sun.javafx.css.media.MediaQuery.evaluate.

Doc from com.sun.javafx.css.media.MediaQuery.evaluate.

Attempts to determine the result of this media query without a context, and returns TriState#TRUE if the query always matches, TriState#FALSE if it never matches, or TriState#UNKNOWN if the result depends on the context or cannot be determined.

Annotations
@Override
evaluateback to summary
public boolean evaluate(MediaQueryContext context)

Implements com.sun.javafx.css.media.MediaQuery.evaluate.

Doc from com.sun.javafx.css.media.MediaQuery.evaluate.

Evaluates this media query against the provided context.

Annotations
@Override
getContextAwarenessback to summary
public int getContextAwareness()

Implements com.sun.javafx.css.media.MediaQuery.getContextAwareness.

Doc from com.sun.javafx.css.media.MediaQuery.getContextAwareness.

Gets the context awareness flags of this media query, indicating which aspects of the media query context are probed by the query.

Annotations
@Override
getFeatureNameback to summary
public String getFeatureName()
getFeatureValueback to summary
public String getFeatureValue()
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Annotations
@Override
ofback to summary
public static <T> FunctionExpression<T> of(String featureName, String featureValue, Function<MediaQueryContext, T> function, T value, ContextAwareness... contextAwareness)

Returns an interned FunctionExpression.

Parameters
featureName:String

the feature name

featureValue:String

the feature value, or null to indicate a boolean context

function:Function<MediaQueryContext, T>

the evaluation function

value:T

the expected return value of the function

contextAwareness:ContextAwareness[]

the context awareness of the function, see MediaQuery#getContextAwareness()

ofback to summary
public static <T> FunctionExpression<T> of(String featureName, String featureValue, Supplier<TriState> contextFreeFunction, Function<MediaQueryContext, T> function, T value, ContextAwareness... contextAwareness)

Returns an interned FunctionExpression.

Parameters
featureName:String

the feature name

featureValue:String

the feature value, or null to indicate a boolean context

contextFreeFunction:Supplier<TriState>

the context-free evaluation function, must never return null

function:Function<MediaQueryContext, T>

the evaluation function

value:T

the expected return value of the function

contextAwareness:ContextAwareness[]

the context awareness of the function, see MediaQuery#getContextAwareness()

toStringback to summary
public String toString()

Overrides java.lang.Object.toString.

Doc from java.lang.Object.toString.

Returns a string representation of the object. Satisfying this method's contract implies a non-null result must be returned.

Annotations
@Override