/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef PageWidgetDelegate_h
#define PageWidgetDelegate_h

#include "public/platform/WebCanvas.h"
#include "public/platform/WebInputEvent.h"
#include "public/web/WebWidget.h"
#include "web/WebExport.h"

namespace blink {

class LocalFrame;
class Page;
class WebGestureEvent;
class WebInputEvent;
class WebKeyboardEvent;
class WebMouseEvent;
class WebMouseWheelEvent;
class WebTouchEvent;

class WEB_EXPORT PageWidgetEventHandler {
 public:
  virtual void handleMouseMove(LocalFrame& mainFrame, const WebMouseEvent&);
  virtual void handleMouseLeave(LocalFrame& mainFrame, const WebMouseEvent&);
  virtual void handleMouseDown(LocalFrame& mainFrame, const WebMouseEvent&);
  virtual void handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent&);
  virtual WebInputEventResult handleMouseWheel(LocalFrame& mainFrame,
                                               const WebMouseWheelEvent&);
  virtual WebInputEventResult handleKeyEvent(const WebKeyboardEvent&) = 0;
  virtual WebInputEventResult handleCharEvent(const WebKeyboardEvent&) = 0;
  virtual WebInputEventResult handleGestureEvent(const WebGestureEvent&) = 0;
  virtual WebInputEventResult handleTouchEvent(LocalFrame& mainFrame,
                                               const WebTouchEvent&);
  virtual ~PageWidgetEventHandler() {}
};

// Common implementation of WebViewImpl and WebPagePopupImpl.
class PageWidgetDelegate {
 public:
  static void animate(Page&, double monotonicFrameBeginTime);

  // For the following methods, the |root| argument indicates a root localFrame
  // from which to start performing the specified operation.

  // See documents of methods with the same names in FrameView class.
  static void updateAllLifecyclePhases(Page&, LocalFrame& root);

  static void paint(Page&, WebCanvas*, const WebRect&, LocalFrame& root);
  static void paintIgnoringCompositing(Page&,
                                       WebCanvas*,
                                       const WebRect&,
                                       LocalFrame& root);

  // See FIXME in the function body about nullptr |root|.
  static WebInputEventResult handleInputEvent(PageWidgetEventHandler&,
                                              const WebInputEvent&,
                                              LocalFrame* root);

 private:
  PageWidgetDelegate() {}
};

}  // namespace blink
#endif