gecko-dev/lib/libmsg/msgbg.cpp

138 строки
3.0 KiB
C++

/* -*- 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 1.1 (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/NPL/
*
* 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 Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "msg.h"
#include "msgbg.h"
#include "msgpane.h"
#include "msgurlq.h"
extern "C" {
extern int MK_OUT_OF_MEMORY;
}
msg_Background::msg_Background()
{
}
msg_Background::~msg_Background()
{
if (m_pane) Interrupt();
}
int
msg_Background::Begin(MSG_Pane* pane)
{
XP_ASSERT(!m_pane);
if (m_pane) return -1;
char* url = XP_STRDUP("mailbox:?background");
if (!url) return MK_OUT_OF_MEMORY;
m_urlstruct = NET_CreateURLStruct(url, NET_NORMAL_RELOAD);
if (!m_urlstruct) {
XP_FREE(url);
return MK_OUT_OF_MEMORY;
}
XP_FREE(url);
m_urlstruct->internal_url = TRUE;
m_pane = pane;
msg_InterruptContext(pane->GetContext(), TRUE);
XP_ASSERT(pane->GetCurrentBackgroundJob() == NULL);
pane->SetCurrentBackgroundJob(this);
MSG_UrlQueue::AddUrlToPane(m_urlstruct, msg_Background::PreExit_s, pane);
return 0;
}
void
msg_Background::Interrupt()
{
XP_ASSERT(m_pane);
if (m_pane) {
msg_InterruptContext(m_pane->GetContext(), FALSE);
XP_ASSERT(m_pane == NULL);
}
}
msg_Background*
msg_Background::FindBGObj(URL_Struct* urlstruct)
{
XP_ASSERT(urlstruct && urlstruct->msg_pane);
if (!urlstruct || !urlstruct->msg_pane) return NULL;
msg_Background* result = urlstruct->msg_pane->GetCurrentBackgroundJob();
// OK, I'm truly evil, but I'm using this as an empty url that goes through
// netlib once. so result will be null...
XP_ASSERT(!result || result->m_pane == urlstruct->msg_pane);
return result;
}
int
msg_Background::ProcessBackground(URL_Struct* urlstruct)
{
msg_Background* obj = FindBGObj(urlstruct);
if (obj) {
return obj->DoSomeWork();
}
return MK_CONNECTED;
}
void
msg_Background::PreExit_s(URL_Struct* urlstruct, int status,
MWContext* context)
{
msg_Background* obj = FindBGObj(urlstruct);
if (obj) {
obj->PreExit(urlstruct, status, context);
}
}
void
msg_Background::PreExit(URL_Struct* /*urlstruct*/, int status,
MWContext*)
{
XP_Bool deleteself = AllDone(status);
XP_ASSERT(m_pane);
if (m_pane) {
m_pane->SetCurrentBackgroundJob(NULL);
m_pane = NULL;
}
if (deleteself) delete this;
}
XP_Bool
msg_Background::AllDone(int /*status*/)
{
return FALSE;
}
XP_Bool
msg_Background::IsRunning()
{
return m_pane != NULL;
}