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// Copyright (c) 2014 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.

package org.cef.handler;

import java.awt.Point;
import java.awt.Rectangle;
import java.nio.ByteBuffer;

import org.cef.browser.CefBrowser;
import org.cef.callback.CefDragData;

/**
 * An abstract adapter class for receiving render events. 
 * The methods in this class are empty.
 * This class exists as convenience for creating handler objects.
 */
public abstract class CefRenderHandlerAdapter implements CefRenderHandler {

  @Override
  public void onCursorChange(CefBrowser browser, 
                             int cursorIdentifer) {
    return;
  }

  @Override
  public Rectangle getViewRect(CefBrowser browser) {
    return new Rectangle(0,0,0,0);
  }

  @Override
  public Point getScreenPoint(CefBrowser browser, Point viewPoint) {
    return new Point(0,0);
  }

  @Override
  public void onPopupShow(CefBrowser browser, 
                          boolean show) {
  }

  @Override
  public void onPopupSize(CefBrowser browser, 
                          Rectangle size) {
  }

  @Override
  public void onPaint(CefBrowser browser, 
                      boolean popup,
                      Rectangle[] dirtyRects, 
                      ByteBuffer buffer, 
                      int width, 
                      int height) {
  }

  @Override
  public boolean startDragging(CefBrowser browser,
                               CefDragData dragData,
                               int mask,
                               int x,
                               int y) {
    return false;
  }

  @Override
  public void updateDragCursor(CefBrowser browser, int operation) {
  }
}