gecko-dev/widget/nsGUIEventIPC.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * The Mozilla Foundation.
 * Portions created by the Initial Developer are Copyright (C) 2010
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Jim Chen <jchen@mozilla.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsGUIEventIPC_h__
#define nsGUIEventIPC_h__

#include "IPC/IPCMessageUtils.h"
#include "nsGUIEvent.h"

namespace IPC
{

template<>
struct ParamTraits<nsEvent>
{
  typedef nsEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, aParam.eventStructType);
    WriteParam(aMsg, aParam.message);
    WriteParam(aMsg, aParam.refPoint);
    WriteParam(aMsg, aParam.time);
    WriteParam(aMsg, aParam.flags);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, &aResult->eventStructType) &&
           ReadParam(aMsg, aIter, &aResult->message) &&
           ReadParam(aMsg, aIter, &aResult->refPoint) &&
           ReadParam(aMsg, aIter, &aResult->time) &&
           ReadParam(aMsg, aIter, &aResult->flags);
  }
};

template<>
struct ParamTraits<nsGUIEvent>
{
  typedef nsGUIEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsEvent>(aParam));
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, static_cast<nsEvent*>(aResult));
  }
};

template<>
struct ParamTraits<nsInputEvent>
{
  typedef nsInputEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsGUIEvent>(aParam));
    WriteParam(aMsg, aParam.modifiers);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, static_cast<nsGUIEvent*>(aResult)) &&
           ReadParam(aMsg, aIter, &aResult->modifiers);
  }
};

template<>
struct ParamTraits<nsMouseEvent_base>
{
  typedef nsMouseEvent_base paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsInputEvent>(aParam));
    WriteParam(aMsg, aParam.button);
    WriteParam(aMsg, aParam.buttons);
    WriteParam(aMsg, aParam.pressure);
    WriteParam(aMsg, aParam.inputSource);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, static_cast<nsInputEvent*>(aResult)) &&
           ReadParam(aMsg, aIter, &aResult->button) &&
           ReadParam(aMsg, aIter, &aResult->buttons) &&
           ReadParam(aMsg, aIter, &aResult->pressure) &&
           ReadParam(aMsg, aIter, &aResult->inputSource);
  }
};

template<>
struct ParamTraits<nsMouseScrollEvent>
{
  typedef nsMouseScrollEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsMouseEvent_base>(aParam));
    WriteParam(aMsg, aParam.scrollFlags);
    WriteParam(aMsg, aParam.delta);
    WriteParam(aMsg, aParam.scrollOverflow);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, static_cast<nsMouseEvent_base*>(aResult)) &&
           ReadParam(aMsg, aIter, &aResult->scrollFlags) &&
           ReadParam(aMsg, aIter, &aResult->delta) &&
           ReadParam(aMsg, aIter, &aResult->scrollOverflow);
  }
};


template<>
struct ParamTraits<nsMouseEvent>
{
  typedef nsMouseEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsMouseEvent_base>(aParam));
    WriteParam(aMsg, aParam.ignoreRootScrollFrame);
    WriteParam(aMsg, (PRUint8) aParam.reason);
    WriteParam(aMsg, (PRUint8) aParam.context);
    WriteParam(aMsg, (PRUint8) aParam.exit);
    WriteParam(aMsg, aParam.clickCount);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    bool rv;
    PRUint8 reason, context, exit;
    rv = ReadParam(aMsg, aIter, static_cast<nsMouseEvent_base*>(aResult)) &&
         ReadParam(aMsg, aIter, &aResult->ignoreRootScrollFrame) &&
         ReadParam(aMsg, aIter, &reason) &&
         ReadParam(aMsg, aIter, &context) &&
         ReadParam(aMsg, aIter, &exit) &&
         ReadParam(aMsg, aIter, &aResult->clickCount);
    aResult->reason = static_cast<nsMouseEvent::reasonType>(reason);
    aResult->context = static_cast<nsMouseEvent::contextType>(context);
    aResult->exit = static_cast<nsMouseEvent::exitType>(exit);
    return rv;
  }
};

template<>
struct ParamTraits<nsKeyEvent>
{
  typedef nsKeyEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsInputEvent>(aParam));
    WriteParam(aMsg, aParam.keyCode);
    WriteParam(aMsg, aParam.charCode);
    WriteParam(aMsg, aParam.isChar);
    WriteParam(aMsg, aParam.location);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, static_cast<nsInputEvent*>(aResult)) &&
           ReadParam(aMsg, aIter, &aResult->keyCode) &&
           ReadParam(aMsg, aIter, &aResult->charCode) &&
           ReadParam(aMsg, aIter, &aResult->isChar) &&
           ReadParam(aMsg, aIter, &aResult->location);
  }
};

template<>
struct ParamTraits<nsTextRangeStyle>
{
  typedef nsTextRangeStyle paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, aParam.mDefinedStyles);
    WriteParam(aMsg, aParam.mLineStyle);
    WriteParam(aMsg, aParam.mIsBoldLine);
    WriteParam(aMsg, aParam.mForegroundColor);
    WriteParam(aMsg, aParam.mBackgroundColor);
    WriteParam(aMsg, aParam.mUnderlineColor);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, &aResult->mDefinedStyles) &&
           ReadParam(aMsg, aIter, &aResult->mLineStyle) &&
           ReadParam(aMsg, aIter, &aResult->mIsBoldLine) &&
           ReadParam(aMsg, aIter, &aResult->mForegroundColor) &&
           ReadParam(aMsg, aIter, &aResult->mBackgroundColor) &&
           ReadParam(aMsg, aIter, &aResult->mUnderlineColor);
  }
};

template<>
struct ParamTraits<nsTextRange>
{
  typedef nsTextRange paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, aParam.mStartOffset);
    WriteParam(aMsg, aParam.mEndOffset);
    WriteParam(aMsg, aParam.mRangeType);
    WriteParam(aMsg, aParam.mRangeStyle);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, &aResult->mStartOffset) &&
           ReadParam(aMsg, aIter, &aResult->mEndOffset) &&
           ReadParam(aMsg, aIter, &aResult->mRangeType) &&
           ReadParam(aMsg, aIter, &aResult->mRangeStyle);
  }
};

template<>
struct ParamTraits<nsTextEvent>
{
  typedef nsTextEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsInputEvent>(aParam));
    WriteParam(aMsg, aParam.seqno);
    WriteParam(aMsg, aParam.theText);
    WriteParam(aMsg, aParam.isChar);
    WriteParam(aMsg, aParam.rangeCount);
    for (PRUint32 index = 0; index < aParam.rangeCount; index++)
      WriteParam(aMsg, aParam.rangeArray[index]);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    if (!ReadParam(aMsg, aIter, static_cast<nsInputEvent*>(aResult)) ||
        !ReadParam(aMsg, aIter, &aResult->seqno) ||
        !ReadParam(aMsg, aIter, &aResult->theText) ||
        !ReadParam(aMsg, aIter, &aResult->isChar) ||
        !ReadParam(aMsg, aIter, &aResult->rangeCount))
      return false;

    if (!aResult->rangeCount) {
      aResult->rangeArray = nsnull;
      return true;
    }

    aResult->rangeArray = new nsTextRange[aResult->rangeCount];
    if (!aResult->rangeArray)
      return false;

    for (PRUint32 index = 0; index < aResult->rangeCount; index++)
      if (!ReadParam(aMsg, aIter, &aResult->rangeArray[index])) {
        Free(*aResult);
        return false;
      }
    return true;
  }

  static void Free(const paramType& aResult)
  {
    if (aResult.rangeArray)
      delete [] aResult.rangeArray;
  }
};

template<>
struct ParamTraits<nsCompositionEvent>
{
  typedef nsCompositionEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsGUIEvent>(aParam));
    WriteParam(aMsg, aParam.seqno);
    WriteParam(aMsg, aParam.data);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, static_cast<nsGUIEvent*>(aResult)) &&
           ReadParam(aMsg, aIter, &aResult->seqno) &&
           ReadParam(aMsg, aIter, &aResult->data);
  }
};

template<>
struct ParamTraits<nsQueryContentEvent>
{
  typedef nsQueryContentEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsGUIEvent>(aParam));
    WriteParam(aMsg, aParam.mSucceeded);
    WriteParam(aMsg, aParam.mInput.mOffset);
    WriteParam(aMsg, aParam.mInput.mLength);
    WriteParam(aMsg, *aParam.mInput.mMouseScrollEvent);
    WriteParam(aMsg, aParam.mReply.mOffset);
    WriteParam(aMsg, aParam.mReply.mString);
    WriteParam(aMsg, aParam.mReply.mRect);
    WriteParam(aMsg, aParam.mReply.mReversed);
    WriteParam(aMsg, aParam.mReply.mHasSelection);
    WriteParam(aMsg, aParam.mReply.mWidgetIsHit);
    WriteParam(aMsg, aParam.mReply.mLineHeight);
    WriteParam(aMsg, aParam.mReply.mPageHeight);
    WriteParam(aMsg, aParam.mReply.mPageWidth);
    WriteParam(aMsg, aParam.mReply.mComputedScrollAmount);
    WriteParam(aMsg, aParam.mReply.mComputedScrollAction);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    aResult->mWasAsync = true;
    return ReadParam(aMsg, aIter, static_cast<nsGUIEvent*>(aResult)) &&
           ReadParam(aMsg, aIter, &aResult->mSucceeded) &&
           ReadParam(aMsg, aIter, &aResult->mInput.mOffset) &&
           ReadParam(aMsg, aIter, &aResult->mInput.mLength) &&
           ReadParam(aMsg, aIter, aResult->mInput.mMouseScrollEvent) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mOffset) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mString) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mRect) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mReversed) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mHasSelection) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mWidgetIsHit) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mLineHeight) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mPageHeight) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mPageWidth) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mComputedScrollAmount) &&
           ReadParam(aMsg, aIter, &aResult->mReply.mComputedScrollAction);
  }
};

template<>
struct ParamTraits<nsSelectionEvent>
{
  typedef nsSelectionEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsGUIEvent>(aParam));
    WriteParam(aMsg, aParam.seqno);
    WriteParam(aMsg, aParam.mOffset);
    WriteParam(aMsg, aParam.mLength);
    WriteParam(aMsg, aParam.mReversed);
    WriteParam(aMsg, aParam.mExpandToClusterBoundary);
    WriteParam(aMsg, aParam.mSucceeded);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, static_cast<nsGUIEvent*>(aResult)) &&
           ReadParam(aMsg, aIter, &aResult->seqno) &&
           ReadParam(aMsg, aIter, &aResult->mOffset) &&
           ReadParam(aMsg, aIter, &aResult->mLength) &&
           ReadParam(aMsg, aIter, &aResult->mReversed) &&
           ReadParam(aMsg, aIter, &aResult->mExpandToClusterBoundary) &&
           ReadParam(aMsg, aIter, &aResult->mSucceeded);
  }
};

template<>
struct ParamTraits<nsIMEUpdatePreference>
{
  typedef nsIMEUpdatePreference paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, aParam.mWantUpdates);
    WriteParam(aMsg, aParam.mWantHints);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, &aResult->mWantUpdates) &&
           ReadParam(aMsg, aIter, &aResult->mWantHints);
  }
};

template<>
struct ParamTraits<nsPluginEvent>
{
  typedef nsPluginEvent paramType;

  static void Write(Message* aMsg, const paramType& aParam)
  {
    WriteParam(aMsg, static_cast<nsGUIEvent>(aParam));
    WriteParam(aMsg, aParam.retargetToFocusedDocument);
  }

  static bool Read(const Message* aMsg, void** aIter, paramType* aResult)
  {
    return ReadParam(aMsg, aIter, static_cast<nsGUIEvent*>(aResult)) &&
           ReadParam(aMsg, aIter, &aResult->retargetToFocusedDocument);
  }
};

} // namespace IPC

#endif // nsGUIEventIPC_h__