VP1WebWatcher Class Reference

#include <VP1WebWatcher.h>

Inheritance diagram for VP1WebWatcher:

Collaboration diagram for VP1WebWatcher:

Classes
class	Imp

Public Types
enum	RESULT {   UNKNOWN, INVALID_URL, CONNECTION_PROBLEMS, NOT_ON_SERVER,   EXISTS }

Signals
void	urlChanged (const QString &url)

Public Member Functions
	VP1WebWatcher (int recheckInterval_ms=30000, QObject *parent=0)
	VP1WebWatcher (const QStringList &urls, int recheckInterval_ms=30000, QObject *parent=0)
virtual	~VP1WebWatcher ()
void	addUrl (const QString &)
void	addUrls (const QStringList &)
QStringList	urls () const
bool	isWatchingUrl (const QString &) const
void	removeUrl (const QString &)
void	removeUrls (const QStringList &)
RESULT	lastResult (const QString &url)
QString	lastResultToString (const QString &url)
QDateTime	lastModTime (const QString &url)

Protected Member Functions
void	timerEvent (QTimerEvent *)

Private Slots
void	httpRequestDone (bool)

Private Attributes
Imp *	m_d

Detailed Description

Definition at line 29 of file VP1WebWatcher.h.

Member Enumeration Documentation

RESULT

enum VP1WebWatcher::RESULT

Enumerator
UNKNOWN
INVALID_URL
CONNECTION_PROBLEMS
NOT_ON_SERVER
EXISTS

Definition at line 49 of file VP1WebWatcher.h.

              { UNKNOWN,//Might be because no http request was yet done.
        INVALID_URL,
        CONNECTION_PROBLEMS,//Various problems (server not found, no net connection, etc.)
        NOT_ON_SERVER,//Request returned 404 (file not found on server)
        EXISTS };//File was found on server

Constructor & Destructor Documentation

VP1WebWatcher() [1/2]

VP1WebWatcher::VP1WebWatcher	(	int	recheckInterval_ms = 30000,
		QObject *	parent = 0
	)

Definition at line 177 of file VP1WebWatcher.cxx.

  : QObject(parent), m_d(new Imp(this,recheckInterval_ms))
{
  startTimer(recheckInterval_ms);
}

VP1WebWatcher() [2/2]

VP1WebWatcher::VP1WebWatcher	(	const QStringList &	urls,
		int	recheckInterval_ms = 30000,
		QObject *	parent = 0
	)

Definition at line 184 of file VP1WebWatcher.cxx.

  : QObject(parent), m_d(new Imp(this,recheckInterval_ms))
{
  addUrls(urls);
  startTimer(recheckInterval_ms);
}

~VP1WebWatcher()

VP1WebWatcher::~VP1WebWatcher ( )

virtual

Definition at line 192 of file VP1WebWatcher.cxx.

{
  while(!m_d->watchedUrls.isEmpty())
    removeUrl(m_d->watchedUrls.front()->url);
  delete m_d;
}

Member Function Documentation

addUrl()

void VP1WebWatcher::addUrl

(

const QString &

)

Definition at line 226 of file VP1WebWatcher.cxx.

{
  // if (isWatchingUrl(u))
  //   return;
  // Imp::WatchedUrl * wu = new Imp::WatchedUrl(u);
  // m_d->watchedUrls << wu;
  // m_d->startDownload(wu);
}

addUrls()

void VP1WebWatcher::addUrls

(

const QStringList &

)

Definition at line 236 of file VP1WebWatcher.cxx.

{
  // foreach (QString u, l)
  //   addUrl(u);
}

httpRequestDone

void VP1WebWatcher::httpRequestDone ( bool  error )

privateslot

Definition at line 200 of file VP1WebWatcher.cxx.

{
  for(Imp::WatchedUrl*wu : m_d->watchedUrls)
    if (wu->thread && wu->thread->handleDone(error, sender())) {
      bool changed = wu->lastResult != wu->thread->result();
      wu->lastResult = wu->thread->result();
      m_d->ensureEndThread(wu->thread);
      if (changed)
    emit urlChanged(wu->url);
      return;
    }
  //We could not find the thread with that http instance. We must
  //assume it was terminated.
}

isWatchingUrl()

bool VP1WebWatcher::isWatchingUrl

(

const QString &

u

)

const

Definition at line 216 of file VP1WebWatcher.cxx.

{
  for (Imp::WatchedUrl*wu : m_d->watchedUrls) {
    if (wu->url == u)
      return true;
  }
  return false;
}

lastModTime()

QDateTime VP1WebWatcher::lastModTime

(

const QString &

url

)

Definition at line 325 of file VP1WebWatcher.cxx.

{
  for(Imp::WatchedUrl*wu : m_d->watchedUrls)
    if (wu->url==url) {
      if (wu->lastResult.startsWith(VP1WebWatcher_PREFIX))
    return QDateTime();//invalid
      QString lastmod = wu->lastResult;
      lastmod = lastmod.simplified();
      lastmod.chop(4);
      QDateTime dt(QDateTime::fromString(lastmod,"ddd, dd MMM yyyy hh:mm:ss"));
      dt.setTimeSpec(Qt::UTC);
      return dt;
    }
  return QDateTime();//invalid
}

lastResult()

VP1WebWatcher::RESULT VP1WebWatcher::lastResult

(

const QString &

url

)

Definition at line 291 of file VP1WebWatcher.cxx.

{
  for(Imp::WatchedUrl*wu : m_d->watchedUrls)
    if (wu->url==url) {
      if (wu->lastResult==VP1WebWatcher_UrlInvalid)
    return INVALID_URL;
      if (wu->lastResult==VP1WebWatcher_httpProblems)
    return CONNECTION_PROBLEMS;
      if (wu->lastResult==VP1WebWatcher_FileNotExist)
    return NOT_ON_SERVER;
      if (wu->lastResult==VP1WebWatcher_Unknown)
    return UNKNOWN;
      if (wu->lastResult==VP1WebWatcher_ResultNotReady)
    return UNKNOWN;
      return EXISTS;
    }
  return UNKNOWN;
}

lastResultToString()

QString VP1WebWatcher::lastResultToString

(

const QString &

url

)

Definition at line 311 of file VP1WebWatcher.cxx.

{
  switch (lastResult(url)) {
  case UNKNOWN: return "UNKNOWN";
  case INVALID_URL: return "INVALID_URL";
  case CONNECTION_PROBLEMS: return "CONNECTION_PROBLEMS";
  case NOT_ON_SERVER: return "NOT_ON_SERVER";
  case EXISTS: return "EXISTS";
  default:
    return "UNKNOWN";
  }
}

removeUrl()

void VP1WebWatcher::removeUrl

(

const QString &

)

Definition at line 252 of file VP1WebWatcher.cxx.

{
  // foreach(Imp::WatchedUrl*wu,m_d->watchedUrls)
  //   if (wu->url == u) {
  //     m_d->watchedUrls.removeAll(wu);
  //     delete wu;
  //     return;
  //   }
}

removeUrls()

void VP1WebWatcher::removeUrls

(

const QStringList &

)

Definition at line 263 of file VP1WebWatcher.cxx.

{
  // foreach (QString u, l)
  //   removeUrl(u);
}

timerEvent()

void VP1WebWatcher::timerEvent ( QTimerEvent *  )

protected

Definition at line 270 of file VP1WebWatcher.cxx.

{
  // const unsigned currentTime = QDateTime::currentDateTime().toTime_t();
  // foreach(Imp::WatchedUrl*wu,m_d->watchedUrls) {
  //   if (!wu->thread) {
  //     m_d->startDownload(wu);
  //   } else {
  //     //Thread is running. Check that it didn't run for too long.
  //     //
  //     //(No matter what, we never restart running thread that have been
  //     //running for less than a second, or no less than twice the
  //     //recheckInterval!)
  //     if (wu->thread->httpStartTime()>0 && currentTime - wu->thread->httpStartTime() > (unsigned(m_d->recheckInterval_ms) * 1000 * 2 + 1000)) {
    // m_d->ensureEndThread(wu->thread);
    // m_d->startDownload(wu);
  //     }
  //   }
  // }
}

urlChanged

void VP1WebWatcher::urlChanged ( const QString &  url )

signal

urls()

QStringList VP1WebWatcher::urls

(

)

const

Definition at line 243 of file VP1WebWatcher.cxx.

{
  QStringList l;
  // foreach(Imp::WatchedUrl*wu,m_d->watchedUrls)
  //   l << wu->url;
  return l;
}

Member Data Documentation

m_d

Imp* VP1WebWatcher::m_d

private

Definition at line 68 of file VP1WebWatcher.h.

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The documentation for this class was generated from the following files:

• VP1WebWatcher.h
• VP1WebWatcher.cxx