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com.sun.javafx.css.media.expression

public final Class ConstantExpression

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

Evaluates to a constant boolean value.

Field Summary

Modifier and TypeField and Description
private final boolean

Constructor Summary

AccessConstructor and Description
private
ConstantExpression(boolean value)

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 int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for this object.

public static ConstantExpression
of(boolean value)

public String
toString()

Overrides java.lang.Object.toString.

Returns a string representation of the object.

public boolean
Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAllwaitwaitwait

Field Detail

valueback to summary
private final boolean value

Constructor Detail

ConstantExpressionback to summary
private ConstantExpression(boolean value)

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
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 ConstantExpression of(boolean value)
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
valueback to summary
public boolean value()