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package javafx.beans.binding;

import java.util.Locale;

import javafx.beans.value.ObservableNumberValue;

/**
 * {@code NumberExpression} is an
 * {@link javafx.beans.value.ObservableNumberValue} plus additional convenience
 * methods to generate bindings in a fluent style.
 * 

* This API allows to mix types when defining arithmetic operations. The type of * the result is defined by the same rules as in the Java Language. *

    *
  1. If one of the operands is a double, the result is a double.
  2. *
  3. If not and one of the operands is a float, the result is a float.
  4. *
  5. If not and one of the operands is a long, the result is a long.
  6. *
  7. The result is an integer otherwise.
  8. *
*

* To be able to deal with an unspecified return type, two interfaces * {@code NumberExpression} and its counterpart * {@link javafx.beans.binding.NumberBinding} were introduced. That means if the * return type is specified as {@code NumberBinding}, the method will either * return a {@link javafx.beans.binding.DoubleBinding}, * {@link javafx.beans.binding.FloatBinding}, * {@link javafx.beans.binding.LongBinding} or * {@link javafx.beans.binding.IntegerBinding}, depending on the types of the * operands. *

* The API tries to do its best in determining the correct return type, e.g. * combining a {@link javafx.beans.value.ObservableNumberValue} with a primitive * double will always result in a {@link javafx.beans.binding.DoubleBinding}. In * cases where the return type is not known by the API, it is the responsibility * of the developer to call the correct getter ({@link #intValue()} etc.). If * the internal representation does not match the type of the getter, a standard * cast is done. * @since JavaFX 2.0 */ public interface NumberExpression extends ObservableNumberValue { // =============================================================== // Negation /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the negation of {@code NumberExpression}. * * @return the new {@code NumberBinding} */ NumberBinding negate(); // =============================================================== // Plus /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the sum of this {@code NumberExpression} and another * {@link javafx.beans.value.ObservableNumberValue}. * * @param other * the second {@code ObservableNumberValue} * @return the new {@code NumberBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ NumberBinding add(final ObservableNumberValue other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the sum of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding add(final double other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the sum of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding add(final float other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the sum of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding add(final long other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the sum of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding add(final int other); // =============================================================== // Minus /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the difference of this {@code NumberExpression} and another * {@link javafx.beans.value.ObservableNumberValue}. * * @param other * the second {@code ObservableNumberValue} * @return the new {@code NumberBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ NumberBinding subtract(final ObservableNumberValue other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the difference of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding subtract(final double other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the difference of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding subtract(final float other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the difference of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding subtract(final long other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the difference of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding subtract(final int other); // =============================================================== // Times /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the product of this {@code NumberExpression} and another * {@link javafx.beans.value.ObservableNumberValue}. * * @param other * the second {@code ObservableNumberValue} * @return the new {@code NumberBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ NumberBinding multiply(final ObservableNumberValue other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the product of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding multiply(final double other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the product of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding multiply(final float other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the product of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding multiply(final long other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the product of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding multiply(final int other); // =============================================================== // DividedBy /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the division of this {@code NumberExpression} and another * {@link javafx.beans.value.ObservableNumberValue}. * * @param other * the second {@code ObservableNumberValue} * @return the new {@code NumberBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ NumberBinding divide(final ObservableNumberValue other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the division of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding divide(final double other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the division of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding divide(final float other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the division of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding divide(final long other); /** * Creates a new {@link javafx.beans.binding.NumberBinding} that calculates * the division of this {@code NumberExpression} and a constant value. * * @param other * the constant value * @return the new {@code NumberBinding} */ NumberBinding divide(final int other); // =============================================================== // IsEqualTo /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this and another {@link javafx.beans.value.ObservableNumberValue} are * equal. *

* When comparing floating-point numbers it is recommended to use the * {@link #isEqualTo(ObservableNumberValue, double) isEqualTo()} method that * allows a small tolerance. * * @param other * the second {@code ObservableNumberValue} * @return the new {@code BooleanBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ BooleanBinding isEqualTo(final ObservableNumberValue other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this and another {@link javafx.beans.value.ObservableNumberValue} are * equal (with a tolerance). *

* Two operands {@code a} and {@code b} are considered equal if * {@code Math.abs(a-b) <= epsilon}. *

* Allowing a small tolerance is recommended when comparing floating-point * numbers because of rounding-errors. * * @param other * the second {@code ObservableNumberValue} * @param epsilon * the tolerance * @return the new {@code BooleanBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ BooleanBinding isEqualTo(final ObservableNumberValue other, double epsilon); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is equal to a constant value (with a * tolerance). *

* Two operands {@code a} and {@code b} are considered equal if * {@code Math.abs(a-b) <= epsilon}. *

* Allowing a small tolerance is recommended when comparing floating-point * numbers because of rounding-errors. * * @param other * the constant value * @param epsilon * the permitted tolerance * @return the new {@code BooleanBinding} */ BooleanBinding isEqualTo(final double other, double epsilon); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is equal to a constant value (with a * tolerance). *

* Two operands {@code a} and {@code b} are considered equal if * {@code Math.abs(a-b) <= epsilon}. *

* Allowing a small tolerance is recommended when comparing floating-point * numbers because of rounding-errors. * * @param other * the constant value * @param epsilon * the permitted tolerance * @return the new {@code BooleanBinding} */ BooleanBinding isEqualTo(final float other, double epsilon); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is equal to a constant value. *

* When comparing floating-point numbers it is recommended to use the * {@link #isEqualTo(long, double) isEqualTo()} method that allows a small * tolerance. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding isEqualTo(final long other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is equal to a constant value (with a * tolerance). *

* Two operands {@code a} and {@code b} are considered equal if * {@code Math.abs(a-b) <= epsilon}. *

* Allowing a small tolerance is recommended when comparing floating-point * numbers because of rounding-errors. * * @param other * the constant value * @param epsilon * the permitted tolerance * @return the new {@code BooleanBinding} */ BooleanBinding isEqualTo(final long other, double epsilon); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is equal to a constant value. *

* When comparing floating-point numbers it is recommended to use the * {@link #isEqualTo(int, double) isEqualTo()} method that allows a small * tolerance. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding isEqualTo(final int other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is equal to a constant value (with a * tolerance). *

* Two operands {@code a} and {@code b} are considered equal if * {@code Math.abs(a-b) <= epsilon}. *

* Allowing a small tolerance is recommended when comparing floating-point * numbers. * * @param other * the constant value * @param epsilon * the permitted tolerance * @return the new {@code BooleanBinding} */ BooleanBinding isEqualTo(final int other, double epsilon); // =============================================================== // IsNotEqualTo /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this and another {@link javafx.beans.value.ObservableNumberValue} are * not equal. *

* When comparing floating-point numbers it is recommended to use the * {@link #isNotEqualTo(ObservableNumberValue, double) isNotEqualTo()} * method that allows a small tolerance. * * @param other * the second {@code ObservableNumberValue} * @return the new {@code BooleanBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ BooleanBinding isNotEqualTo(final ObservableNumberValue other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this and another {@link javafx.beans.value.ObservableNumberValue} are * not equal (with a tolerance). *

* Two operands {@code a} and {@code b} are considered not equal if * {@code Math.abs(a-b) > epsilon}. *

* Allowing a small tolerance is recommended when comparing floating-point * numbers because of rounding-errors. * * @param other * the second {@code ObservableNumberValue} * @param epsilon * the permitted tolerance * @return the new {@code BooleanBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ BooleanBinding isNotEqualTo(final ObservableNumberValue other, double epsilon); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is not equal to a constant value (with a * tolerance). *

* Two operands {@code a} and {@code b} are considered not equal if * {@code Math.abs(a-b) > epsilon}. *

* Allowing a small tolerance is recommended when comparing floating-point * numbers. * * @param other * the constant value * @param epsilon * the permitted tolerance * @return the new {@code BooleanBinding} */ BooleanBinding isNotEqualTo(final double other, double epsilon); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is not equal to a constant value (with a * tolerance). *

* Two operands {@code a} and {@code b} are considered not equal if * {@code Math.abs(a-b) > epsilon}. *

* Allowing a small tolerance is recommended when comparing floating-point * numbers. * * @param other * the constant value * @param epsilon * the permitted tolerance * @return the new {@code BooleanBinding} */ BooleanBinding isNotEqualTo(final float other, double epsilon); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is not equal to a constant value. *

* When comparing floating-point numbers it is recommended to use the * {@link #isNotEqualTo(long, double) isNotEqualTo()} method that allows a * small tolerance. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding isNotEqualTo(final long other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is not equal to a constant value (with a * tolerance). *

* Two operands {@code a} and {@code b} are considered not equal if * {@code Math.abs(a-b) > epsilon}. *

* Allowing a small tolerance is recommended when comparing floating-point * numbers. * * @param other * the constant value * @param epsilon * the permitted tolerance * @return the new {@code BooleanBinding} */ BooleanBinding isNotEqualTo(final long other, double epsilon); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is not equal to a constant value. *

* When comparing floating-point numbers it is recommended to use the * {@link #isNotEqualTo(int, double) isNotEqualTo()} method that allows a * small tolerance. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding isNotEqualTo(final int other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is not equal to a constant value (with a * tolerance). *

* Two operands {@code a} and {@code b} are considered not equal if * {@code Math.abs(a-b) > epsilon}. *

* Allowing a small tolerance is recommended when comparing floating-point * numbers. * * @param other * the constant value * @param epsilon * the permitted tolerance * @return the new {@code BooleanBinding} */ BooleanBinding isNotEqualTo(final int other, double epsilon); // =============================================================== // IsGreaterThan /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is greater than another * {@link javafx.beans.value.ObservableNumberValue}. * * @param other * the second {@code ObservableNumberValue} * @return the new {@code BooleanBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ BooleanBinding greaterThan(final ObservableNumberValue other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is greater than a constant value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding greaterThan(final double other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is greater than a constant value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding greaterThan(final float other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is greater than a constant value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding greaterThan(final long other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is greater than a constant value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding greaterThan(final int other); // =============================================================== // IsLesserThan /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is lesser than another * {@link javafx.beans.value.ObservableNumberValue}. * * @param other * the second {@code ObservableNumberValue} * @return the new {@code BooleanBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ BooleanBinding lessThan(final ObservableNumberValue other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is lesser than a constant value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding lessThan(final double other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is lesser than a constant value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding lessThan(final float other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is lesser than a constant value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding lessThan(final long other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is lesser than a constant value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding lessThan(final int other); // =============================================================== // IsGreaterThanOrEqualTo /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is greater than or equal to another * {@link javafx.beans.value.ObservableNumberValue}. * * @param other * the second {@code ObservableNumberValue} * @return the new {@code BooleanBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ BooleanBinding greaterThanOrEqualTo(final ObservableNumberValue other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is greater than or equal to a constant * value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding greaterThanOrEqualTo(final double other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is greater than or equal to a constant * value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding greaterThanOrEqualTo(final float other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is greater than or equal to a constant * value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding greaterThanOrEqualTo(final long other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is greater than or equal to a constant * value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding greaterThanOrEqualTo(final int other); // =============================================================== // IsLessThanOrEqualTo /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is less than or equal to another * {@link javafx.beans.value.ObservableNumberValue}. * * @param other * the second {@code ObservableNumberValue} * @return the new {@code BooleanBinding} * @throws NullPointerException * if the other {@code ObservableNumberValue} is {@code null} */ BooleanBinding lessThanOrEqualTo(final ObservableNumberValue other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is less than or equal to a constant * value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding lessThanOrEqualTo(final double other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is less than or equal to a constant * value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding lessThanOrEqualTo(final float other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is less than or equal to a constant * value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding lessThanOrEqualTo(final long other); /** * Creates a new {@link javafx.beans.binding.BooleanBinding} that holds {@code true} * if this {@code NumberExpression} is less than or equal to a constant * value. * * @param other * the constant value * @return the new {@code BooleanBinding} */ BooleanBinding lessThanOrEqualTo(final int other); // =============================================================== // String conversions /** * Creates a {@link javafx.beans.binding.StringBinding} that holds the value * of the {@code NumberExpression} turned into a {@code String}. If the * value of this {@code NumberExpression} changes, the value of the * {@code StringBinding} will be updated automatically. *

* The conversion is done without any formatting applied. * * @return the new {@code StringBinding} */ StringBinding asString(); /** * Creates a {@link javafx.beans.binding.StringBinding} that holds the value * of the {@code NumberExpression} turned into a {@code String}. If the * value of this {@code NumberExpression} changes, the value of the * {@code StringBinding} will be updated automatically. *

* The result is formatted according to the formatting {@code String}. See * {@code java.util.Formatter} for formatting rules. * * @param format * the formatting {@code String} * @return the new {@code StringBinding} */ StringBinding asString(String format); /** * Creates a {@link javafx.beans.binding.StringBinding} that holds the value * of the {@code NumberExpression} turned into a {@code String}. If the * value of this {@code NumberExpression} changes, the value of the * {@code StringBinding} will be updated automatically. *

* The result is formatted according to the formatting {@code String} and * the passed in {@code Locale}. See {@code java.util.Formatter} for * formatting rules. See {@code java.util.Locale} for details on * {@code Locale}. * * @param locale the Locale to be used * @param format * the formatting {@code String} * @return the new {@code StringBinding} */ StringBinding asString(Locale locale, String format); }





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