netwerk/protocol/wyciwyg/WyciwygChannelChild.h
author Chris Pearce <chris@pearce.org.nz>
Thu, 19 May 2011 09:12:25 +1200
changeset 69675 4567d5e86898e19921e508bd85e7b52eea8a48ba
parent 57926 553678fc7c03cc9b37bde7dca5f03d69d19789f5
child 70937 4a33bc1f772d96c3dda760ad6d631e952b6b1cdc
permissions -rw-r--r--
Bug 652475 - Add media.volume_scale pref to scale output volume without changing reported volume. r=roc

/* ***** 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):
 *   Michal Novotny <michal.novotny@gmail.com>
 *
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 * 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"),
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 * ***** END LICENSE BLOCK ***** */

#ifndef mozilla_net_WyciwygChannelChild_h
#define mozilla_net_WyciwygChannelChild_h

#include "mozilla/net/PWyciwygChannelChild.h"
#include "mozilla/net/ChannelEventQueue.h"
#include "nsIWyciwygChannel.h"
#include "nsIChannel.h"
#include "nsIProgressEventSink.h"

namespace mozilla {
namespace net {

// TODO: replace with IPDL states
enum WyciwygChannelChildState {
  WCC_NEW,
  WCC_INIT,

  // States when reading from the channel
  WCC_OPENED,
  WCC_ONSTART,
  WCC_ONDATA,
  WCC_ONSTOP,

  // States when writing to the cache
  WCC_ONWRITE,
  WCC_ONCLOSED
};


// Header file contents
class WyciwygChannelChild : public PWyciwygChannelChild
                          , public nsIWyciwygChannel
                          , public ChannelEventQueue<WyciwygChannelChild>
{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIREQUEST
  NS_DECL_NSICHANNEL
  NS_DECL_NSIWYCIWYGCHANNEL

  WyciwygChannelChild();
  virtual ~WyciwygChannelChild();

  void AddIPDLReference();
  void ReleaseIPDLReference();

  nsresult Init(nsIURI *uri);

  bool IsSuspended();

protected:
  bool RecvOnStartRequest(const nsresult& statusCode,
                          const PRInt32& contentLength,
                          const PRInt32& source,
                          const nsCString& charset,
                          const nsCString& securityInfo);
  bool RecvOnDataAvailable(const nsCString& data,
                           const PRUint32& offset);
  bool RecvOnStopRequest(const nsresult& statusCode);
  bool RecvCancelEarly(const nsresult& statusCode);

  void OnStartRequest(const nsresult& statusCode,
                      const PRInt32& contentLength,
                      const PRInt32& source,
                      const nsCString& charset,
                      const nsCString& securityInfo);
  void OnDataAvailable(const nsCString& data,
                       const PRUint32& offset);
  void OnStopRequest(const nsresult& statusCode);
  void CancelEarly(const nsresult& statusCode);

private:
  nsresult                          mStatus;
  PRBool                            mIsPending;
  bool                              mCanceled;
  PRUint32                          mLoadFlags;
  PRInt32                           mContentLength;
  PRInt32                           mCharsetSource;
  nsCString                         mCharset;
  nsCOMPtr<nsIURI>                  mURI;
  nsCOMPtr<nsIURI>                  mOriginalURI;
  nsCOMPtr<nsISupports>             mOwner;
  nsCOMPtr<nsIInterfaceRequestor>   mCallbacks;
  nsCOMPtr<nsIProgressEventSink>    mProgressSink;
  nsCOMPtr<nsILoadGroup>            mLoadGroup;
  nsCOMPtr<nsIStreamListener>       mListener;
  nsCOMPtr<nsISupports>             mListenerContext;
  nsCOMPtr<nsISupports>             mSecurityInfo;

  // FIXME: replace with IPDL states (bug 536319)
  enum WyciwygChannelChildState mState;

  bool mIPCOpen;

  friend class WyciwygStartRequestEvent;
  friend class WyciwygDataAvailableEvent;
  friend class WyciwygStopRequestEvent;
  friend class WyciwygCancelEvent;
};

inline bool
WyciwygChannelChild::IsSuspended()
{
  return false;
}

} // namespace net
} // namespace mozilla

#endif // mozilla_net_WyciwygChannelChild_h