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/*
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 *
 * Copyright 2012-2018 the original author or authors.
 */
package org.assertj.swing.driver;

import java.awt.Point;

import org.jetbrains.annotations.NotNull;
import javax.swing.JScrollBar;

import org.assertj.swing.annotation.RunsInCurrentThread;

/**
 * 
 * A location in a {@code JScrollBar} in a orientation-specific way.
 * 
 * 
 * 
 * Note: Methods in this class are accessed in the current executing thread. Such thread may or may not be the
 * event dispatch thread (EDT). Client code must call methods in this class from the EDT.
 * 
 * 
 * @author Alex Ruiz
 * @author Yvonne Wang
 */
@RunsInCurrentThread
abstract class JScrollBarLocationStrategy {
  abstract int arrow(@NotNull JScrollBar scrollBar);

  abstract @NotNull Point thumbLocation(@NotNull JScrollBar scrollBar, double fraction);

  abstract @NotNull Point blockLocation(@NotNull JScrollBar scrollBar, @NotNull Point unitLocation, int offset);

  abstract @NotNull Point unitLocationToScrollDown(@NotNull JScrollBar scrollBar);
}