platform/editor-ui-api/src/com/intellij/openapi/editor/event/VisibleAreaListener.java

/*
 * Copyright 2000-2013 JetBrains s.r.o.
 *
 * 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.
 */
package com.intellij.openapi.editor.event;

import java.util.EventListener;

/**
 * Allows to receive notifications about editor scrolling and resize.
 *
 * @see com.intellij.openapi.editor.ScrollingModel#addVisibleAreaListener(VisibleAreaListener)
 * @see EditorEventMulticaster#addVisibleAreaListener(VisibleAreaListener)
 */
public interface VisibleAreaListener extends EventListener {
  /**
   * Called when the editor is scrolled or resized.
   *
   * @param e the event containing information about changes in the visible area of the editor.
   */
  void visibleAreaChanged(VisibleAreaEvent e);
}