org.openqa.selenium.support.ui.Wait.java Source code

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Here is the source code for org.openqa.selenium.support.ui.Wait.java

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// Licensed to the Software Freedom Conservancy (SFC) under one
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// to you under the Apache License, Version 2.0 (the
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// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
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package org.openqa.selenium.support.ui;

import java.util.function.Function;

/**
 * A generic interface for waiting until a condition is true or not null. The condition may take a
 * single argument of type .
 *
 * @param <F> the argument to pass to any function called
 */
public interface Wait<F> {

    /**
     * Implementations should wait until the condition evaluates to a value that is neither null nor
     * false. Because of this contract, the return type must not be Void.
     *
     * <p>
     * If the condition does not become true within a certain time (as defined by the implementing
     * class), this method will throw a non-specified {@link Throwable}. This is so that an
     * implementor may throw whatever is idiomatic for a given test infrastructure (e.g. JUnit4 would
     * throw {@link AssertionError}).
     *
     * @param <T> the return type of the method, which must not be Void
     * @param isTrue the parameter to pass to the {@link ExpectedCondition}
     * @return truthy value from the isTrue condition
     */
    <T> T until(Function<? super F, T> isTrue);
}