Module javafx.graphics
Package javafx.css

Class Stylesheet


  • public class Stylesheet
extends Object
    A stylesheet which can apply properties to a tree of objects. A stylesheet is a collection of zero or more Rules, each of which is applied to each object in the tree. Typically the selector will examine the object to determine whether or not it is applicable, and if so it will apply certain property values to the object.
    Since:
    9

    • Method Detail

      • getUrl

        public String getUrl​()
        The URL from which the stylesheet was loaded.
        Returns:
        The URL from which the stylesheet was loaded, or null if the stylesheet was created from an inline style.

      • setOrigin

        public void setOrigin​(StyleOrigin origin)

      • getRules

        public List<Rule> getRules​()

      • equals

        public boolean equals​(Object obj)
        Description copied from class: Object
        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.

        The equals method for class Object implements the most discriminating possible equivalence relation on objects; that is, for any non-null reference values x and y, this method returns true if and only if x and y refer to the same object (x == y has the value true).

        Note that it is generally necessary to override the hashCode method whenever this method is overridden, so as to maintain the general contract for the hashCode method, which states that equal objects must have equal hash codes.

        Overrides:
        equals in class Object
        Parameters:
        obj - the reference object with which to compare.
        Returns:
        true if this object is the same as the obj argument; false otherwise.
        See Also:
        Object.hashCode(), HashMap

      • hashCode

        public int hashCode​()
        Description copied from class: Object
        Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by 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(Object) 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 Object.equals(java.lang.Object) 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.

        As much as is reasonably practical, the hashCode method defined by class Object does return distinct integers for distinct objects. (The hashCode may or may not be implemented as some function of an object's memory address at some point in time.)

        Overrides:
        hashCode in class Object
        Returns:
        a hash code value for this object.
        See Also:
        Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

      • toString

        public String toString​()
        Returns a string representation of this object.
        Overrides:
        toString in class Object
        Returns:
        a string representation of the object.

      • loadBinary

        public static Stylesheet loadBinary​(URL url)
                             throws IOException
        Load a binary stylesheet file from a input stream.
        Parameters:
        url - the URL from which the stylesheet will be loaded
        Returns:
        the constructed stylesheet
        Throws:
        IOException - the exception

      • convertToBinary

        public static void convertToBinary​(File source,
                                   File destination)
                            throws IOException
        Convert the .css file referenced by urlIn to binary format and write to urlOut.
        Parameters:
        source - is the JavaFX .css file to convert
        destination - is the file to which the binary conversion is written
        Throws:
        IOException - the exception
        IllegalArgumentException - if either parameter is null, if source and destination are the same, if source cannot be read, or if destination cannot be written.