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