/* This file is part of the KDE libraries
   Copyright (C) 2005-2006 Olivier Goffart <ogoffart at kde.org>

   code from KNotify/KNotifyClient
   Copyright (c) 1997 Christian Esken (esken@kde.org)
                 2000 Charles Samuels (charles@kde.org)
                 2000 Stefan Schimanski (1Stein@gmx.de)
                 2000 Matthias Ettrich (ettrich@kde.org)
                 2000 Waldo Bastian <bastian@kde.org>
                 2000-2003 Carsten Pfeiffer <pfeiffer@kde.org>
                 2005 Allan Sandfeld Jensen <kde@carewolf.com>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#include "knotification.h"
#include "knotificationmanager_p.h"

#include <kmessagebox.h>
#include <klocale.h>
#include <kiconloader.h>
#include <kconfig.h>
#include <kpassivepopup.h>
#include <kdialog.h>
#include <kmacroexpander.h>
#include <kwindowsystem.h>
#include <kdebug.h>
#include <kvbox.h>
#include <kapplication.h>

#include <QTimer>
#include <QTabWidget>
#include <QDBusError>

struct KNotification::Private
{
    QString eventId;
    int id;
    int ref;

    QWidget *widget;
    QString title;
    QString text;
    QStringList actions;
    QPixmap pixmap;
    ContextList contexts;
    NotificationFlags flags;
    KComponentData componentData;

    QTimer updateTimer;
    bool needUpdate;

    Private() : id(0), ref(1), widget(0l), needUpdate(false) {}
    /**
     * recursive function that raise the widget. @p w
     *
     * @see raiseWidget()
     */
    static void raiseWidget(QWidget *w);
};

KNotification::KNotification(const QString& eventId, QWidget *parent, const NotificationFlags& flags) :
        QObject(parent) , d(new Private)
{
    d->eventId=eventId;
    d->flags=flags;
    setWidget(parent);
    connect(&d->updateTimer,SIGNAL(timeout()), this, SLOT(update()));
    d->updateTimer.setSingleShot(true);
    d->updateTimer.setInterval(100);
}

KNotification::KNotification(
        const QString& eventId,
        const NotificationFlags& flags,
        QObject *parent)
        : QObject(parent),
        d(new Private)
{
    d->eventId=eventId;
    d->flags=flags;
    connect(&d->updateTimer,SIGNAL(timeout()), this, SLOT(update()));
    d->updateTimer.setSingleShot(true);
    d->updateTimer.setInterval(100);
}


KNotification::~KNotification()
{
    if(d ->id > 0)
        KNotificationManager::self()->close( d->id );
    delete d;
}

QString KNotification::eventId() const
{
    return d->eventId;
}

QString KNotification::title() const
{
    return d->title;
}

QString KNotification::text() const
{
    return d->text;
}

QWidget *KNotification::widget() const
{
    return d->widget;
}

void KNotification::setWidget(QWidget *wid)
{
    d->widget = wid;
    setParent(wid);
    if ( wid && d->flags &  CloseWhenWidgetActivated ) {
        wid->installEventFilter(this);
    }
}

void KNotification::setTitle(const QString &title)
{
    d->needUpdate = true;
    d->title = title;
    if(d->id > 0)
        d->updateTimer.start();
}

void KNotification::setText(const QString &text)
{
    d->needUpdate = true;
    d->text=text;
    if(d->id > 0)
        d->updateTimer.start();
}

QPixmap KNotification::pixmap() const
{
    return d->pixmap;
}

void KNotification::setPixmap(const QPixmap &pix)
{
    d->needUpdate = true;
    d->pixmap=pix;
    if(d->id > 0)
        d->updateTimer.start();
}

QStringList KNotification::actions() const
{
    return d->actions;
}

void KNotification::setActions(const QStringList& as )
{
    d->needUpdate = true;
    d->actions=as;
    if(d->id > 0)
        d->updateTimer.start();
}

KNotification::ContextList KNotification::contexts() const
{
    return d->contexts;
}

void KNotification::setContexts( const KNotification::ContextList &contexts)
{
    d->contexts=contexts;
}

void KNotification::addContext( const KNotification::Context & context)
{
    d->contexts << context;
}

void KNotification::addContext( const QString & context_key, const QString & context_value )
{
    d->contexts << qMakePair( context_key , context_value );
}

KNotification::NotificationFlags KNotification::flags() const
{
    return d->flags;
}

void KNotification::setFlags(const NotificationFlags & flags)
{
    d->flags=flags;
}


void KNotification::setComponentData(const KComponentData &c)
{
    d->componentData = c;
}

void KNotification::activate(unsigned int action)
{
    switch (action)
    {
        case 0:
            emit activated();
            break;
        case 1:
            emit action1Activated();
            break;
        case 2:
            emit action2Activated();
            break;
        case 3:
            emit action3Activated();
            break;
    }
    emit activated(action);
    if(d->id != -1)
        deleteLater();
    d->id = -2;
}


void KNotification::close()
{
    if(d->id >= 0)
        KNotificationManager::self()->close( d->id );
    if(d->id != -1) //=-1 mean still waiting for receiving the id
        deleteLater();
    d->id = -2;
    emit closed();
}


void KNotification::raiseWidget()
{
    if ( !d->widget ) {
        return;
    }

    Private::raiseWidget( d->widget );
}


void KNotification::Private::raiseWidget(QWidget *w)
{
    //TODO  this function is far from finished.
    if(w->isTopLevel())
    {
        w->raise();
        KWindowSystem::activateWindow( w->winId() );
    }
    else
    {
        QWidget *pw=w->parentWidget();
        raiseWidget(pw);

        if( QTabWidget *tab_widget=qobject_cast<QTabWidget*>(pw))
        {
            tab_widget->setCurrentIndex(tab_widget->indexOf(w));
        }
    }
}

KNotification *KNotification::event( const QString& eventid , const QString& title, const QString& text,
        const QPixmap& pixmap, QWidget *widget, const NotificationFlags &flags, const KComponentData &componentData)
{
    KNotification *notify=new KNotification(eventid, widget, flags);
    notify->setTitle(title);
    notify->setText(text);
    notify->setPixmap(pixmap);
    notify->setComponentData(componentData);

    QTimer::singleShot(0,notify,SLOT(sendEvent()));

    return notify;
}

KNotification *KNotification::event( const QString& eventid , const QString& text,
        const QPixmap& pixmap, QWidget *widget, const NotificationFlags &flags, const KComponentData &componentData)
{
    return event( eventid, QString(), text, pixmap, widget, flags, componentData );
}


KNotification *KNotification::event( StandardEvent eventid , const QString& title, const QString& text,
        const QPixmap& pixmap, QWidget *widget, const NotificationFlags &flags)
{
    QString message;
    switch ( eventid ) {
        case Warning:
            message = QLatin1String("warning");
            break;
        case Error:
            message = QLatin1String("fatalerror");
            break;
        case Catastrophe:
            message = QLatin1String("catastrophe");
            break;
        case Notification: // fall through
        default:
            message = QLatin1String("notification");
            break;
    }
    return event( message, title, text, pixmap, widget , flags | DefaultEvent );
}

KNotification *KNotification::event( StandardEvent eventid , const QString& text,
        const QPixmap& pixmap, QWidget *widget, const NotificationFlags &flags)
{
    return event( eventid, QString(), text, pixmap, widget , flags );
}

void KNotification::ref()
{
    d->ref++;
}

void KNotification::deref()
{
    d->ref--;
    if(d->ref==0)
        close();
}

void KNotification::beep( const QString & reason, QWidget * widget )
{
    event( QLatin1String("beep"), reason, QPixmap(), widget , CloseOnTimeout | DefaultEvent );
}

void KNotification::sendEvent()
{
    d->needUpdate = false;
    if(d->id == 0)
    {
        QString appname;

        if(d->flags & DefaultEvent)
            appname = QLatin1String("kde");
        else if(d->componentData.isValid()) {
            appname = d->componentData.componentName();
        } else {
            appname = KGlobal::mainComponent().componentName();
        }

        if (KNotificationManager::self()->notify( this , d->pixmap , d->actions , d->contexts , appname ))
            d->id = -1;
    }
    else if(d->id > 0)
    {
        KNotificationManager::self()->reemit(this , d->id );
    }
    else if(d->id == -1)
    {
        //schedule an update.
        d->needUpdate = true;
    }
}

void KNotification::slotReceivedId(int id)
{
    if(d->id == -2) //we are already closed
    {
        KNotificationManager::self()->close( id, /*force=*/ true );
        deleteLater();
        return;
    }
    d->id=id;
    if(d->id>0)
    {
        KNotificationManager::self()->insert(this,d->id);
        if (d->needUpdate)
            sendEvent();
    }
    else
    {
        //if there is no presentation, delete the object
        QTimer::singleShot(0, this, SLOT(deref()));
    }
}

void KNotification::slotReceivedIdError(const QDBusError& error)
{
    if(d->id == -2) //we are already closed
    {
        deleteLater();
        return;
    }
    kWarning(299) << "Error while contacting notify daemon" << error.message();
    d->id = -3;
    QTimer::singleShot(0, this, SLOT(deref()));
}


void KNotification::update()
{
	KNotificationManager::self()->update(this, d->id);
}

bool KNotification::eventFilter( QObject * watched, QEvent * event )
{
    if( watched == d->widget )
    {
        if( event->type() == QEvent::WindowActivate )
        {
            if( d->flags &  CloseWhenWidgetActivated )
                QTimer::singleShot(500, this, SLOT(close()));
        }
        //kDebug(299) << event->type();
    }

    return false;
}


#include "moc_knotification.cpp"