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// download_signal_log.h -*-c++-*-
//
// Copyright (C) 2001, 2005 Daniel Burrows
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of
// the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING. If not, write to
// the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
//
#ifndef DOWNLOAD_SIGNAL_LOG_H
#define DOWNLOAD_SIGNAL_LOG_H
#include <apt-pkg/acquire.h>
#include <sigc++/signal.h>
#include "aptitude.h"
#include <cwidget/generic/util/ref_ptr.h>
/** \brief A class that sits there emitting signals about the current
* download status, and can be queried for specific info about that
* status.
*
* \file download_signal_log.h
*/
/** A download-signal log translates AcquireStatus calls into signals.
* Typically only one slot will be attached to each signal, but this
* allows a degree of separation to be introduced between the
* back-end progress object and the higher-level objects that display
* the current progress.
*
* The signals emitted by this class can be divided into groups.
* With most of the signals, the download class will block until the
* signal emission is complete. However, several signals pass an
* extra slot argument called the "continuation"; this should be
* called (with the "result", if any, of the signal) when the task
* identified by the signal is completed. The purpose here is to
* allow the non-blocking display of prompts such as the Media Change
* dialog.
*
* The signals which take a continuation are currently MediaChange,
* Pulse, and Stop. They also provide an implementation that is not
* continuation-passing; this version should be used only when no
* cross-thread calls are being performed and the connectee of the
* signals is known to not defer its response (i.e., it calls the
* continuation before returning). Mainly this means the
* command-line download mode.
*/
class download_signal_log : public pkgAcquireStatus
{
public:
download_signal_log();
virtual ~download_signal_log();
struct timeval &get_time() {return Time;}
struct timeval &get_start_time() {return StartTime;}
unsigned long long get_last_bytes() {return LastBytes;}
unsigned long long get_currentCPS() {return CurrentCPS;}
unsigned long long get_current_bytes() {return CurrentBytes;}
unsigned long long get_total_bytes() {return TotalBytes;}
unsigned long long get_fetched_bytes() {return FetchedBytes;}
unsigned long long get_elapsed_time() {return ElapsedTime;}
unsigned long get_total_items() {return TotalItems;}
unsigned long get_current_items() {return CurrentItems;}
void set_update(bool _Update) {Update=_Update;}
sigc::signal3<void, unsigned long long, unsigned long long,
download_signal_log &> Fetched_sig;
sigc::signal4<void, std::string, std::string,
download_signal_log &, const sigc::slot1<void, bool> &> MediaChange_sig;
sigc::signal2<void, pkgAcquire::ItemDesc &, download_signal_log &> IMSHit_sig;
sigc::signal2<void, pkgAcquire::ItemDesc &, download_signal_log &> Fetch_sig;
sigc::signal2<void, pkgAcquire::ItemDesc &, download_signal_log &> Done_sig;
sigc::signal2<void, pkgAcquire::ItemDesc &, download_signal_log &> Fail_sig;
sigc::signal3<void, pkgAcquire *, download_signal_log &,
const sigc::slot1<void, bool> &> Pulse_sig;
sigc::signal1<void, download_signal_log &> Start_sig;
sigc::signal2<void, download_signal_log &,
const sigc::slot0<void> &> Stop_sig;
sigc::signal1<void, download_signal_log &> Complete_sig;
void Fetched(unsigned long long Size, unsigned long long ResumePoint);
void MediaChange(const std::string &Media, const std::string &Drive,
const sigc::slot1<void, bool> &k);
bool MediaChange(std::string Media, std::string Drive);
void IMSHit(pkgAcquire::ItemDesc &item);
void Fetch(pkgAcquire::ItemDesc &item);
void Done(pkgAcquire::ItemDesc &item);
void Fail(pkgAcquire::ItemDesc &item);
void Pulse(pkgAcquire *Owner, const sigc::slot1<void, bool> &k);
bool Pulse(pkgAcquire *Owner);
void Start();
void Stop(const sigc::slot0<void> &k);
void Stop();
// Called when EVERYTHING is over. "Stop" is not sufficient, since
// it is potentially called multiple times (eg, for installs spread across
// several CDs)
void Complete();
};
#endif
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