gecko-dev/lib/mailto/msgbg.h

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2.6 KiB
C
Исходник Обычный вид История

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#ifndef _MsgBg_H_
#define _MsgBg_H_
#include "msgzap.h"
class MSG_Pane;
class msg_Background : public MSG_ZapIt {
public:
msg_Background();
virtual ~msg_Background();
/* Begin() kicks things off. Sometime after making this call, calls will
be made to DoSomeWork(). This will interrupt any current background
operation or URL running on the given MSG_Pane. */
virtual int Begin(MSG_Pane* pane);
/* Interrupt() interrupts the running background operation. Just does an
InterruptContext on the pane's context. */
virtual void Interrupt();
/* Whether we are currently doing our background operation. */
virtual XP_Bool IsRunning();
// This routine is called from netlib (via msgglue) to cause us to actually
// do something.
static int ProcessBackground(URL_Struct* urlstruct);
protected:
static msg_Background* FindBGObj(URL_Struct* urlstruct);
static void PreExit_s(URL_Struct* urlstruct, int status,
MWContext* context);
virtual void PreExit(URL_Struct* urlstruct, int status,
MWContext* context);
/* The below are the only routines typically redefined by subclasses. */
/* DoSomeWork() keeps getting called. If it returns
MK_WAITING_FOR_CONNECTION, that means it hasn't finished its stuff. If
it returns MK_CONNECTED, that means it has successfully finished. If it
returns a negative value, that means we failed and it's an error
condition. */
virtual int DoSomeWork() = 0;
/* AllDone() gets called when things are finished. If the given status is
negative, then we were interrupted or had an error. This is a good
place to kick off another background operation. If it returns TRUE,
then this background object will be destroyed. */
virtual XP_Bool AllDone(int status);
MSG_Pane* m_pane;
URL_Struct* m_urlstruct;
};
#endif /* _MsgBg_H_ */