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• 1.3.7
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• ChildDetector.java

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com.cedarsoft.utils.ChildDetector Maven / Gradle / Ivy

package com.cedarsoft.utils;

import org.jetbrains.annotations.NotNull;

import java.util.List;

/**
 * Implementations detect all children of an element that shall be added to the recursion
 * P: The type of the Parent
 * C: The type of the children
 * Z: The type of the context
 */
public interface ChildDetector {
  /**
   * Finds the children for the given parent
   *
   * @param parent the parent
   * @return the children
   */
  @NotNull
  List findChildren( @NotNull P parent );

  /**
   * Registers a change listener that is notified when the child detector changes its children
   */
  void addChangeListener( @NotNull ChildChangeListener
 changeListener );

  /**
   * Removes the change listener
   *
   * @param changeListener the change listener that is removed
   */
  void removeChangeListener( @NotNull ChildChangeListener
 changeListener );
}