/* -*- mode: c++; c-basic-offset:4 -*-
    gui/certificaterequester.h

    This file is part of KleopatraClient, the Kleopatra interface library
    Copyright (c) 2008 Klarälvdalens Datakonsult AB

    KleopatraClient is free software; you can redistribute it and/or modify
    it under the terms of the GNU Library General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    KleopatraClient 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 program; if not, write to the Free Software
    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include "certificaterequester.h"

#include <libkleopatraclient/core/selectcertificatecommand.h>

#include <QPointer>
#include <QPushButton>
#include <QLabel>
#include <QLineEdit>
#include <QLayout>
#include <QMessageBox>

#include <memory>

using namespace KLEOPATRACLIENT_NAMESPACE;
using namespace KLEOPATRACLIENT_NAMESPACE::Gui;

class CertificateRequester::Private {
    friend class ::KLEOPATRACLIENT_NAMESPACE::Gui::CertificateRequester;
    CertificateRequester * const q;
public:
    explicit Private( CertificateRequester * qq )
        : q( qq ),
          selectedCertificates(),
          command(),
          multipleCertificatesAllowed( false ),
          onlySigningCertificatesAllowed( false ),
          onlyEncryptionCertificatesAllowed( false ),
          onlyOpenPGPCertificatesAllowed( false ),
          onlyX509CertificatesAllowed( false ),
          onlySecretKeysAllowed( false ),
          ui( q )
    {

    }

private:
    void updateLineEdit() {
        ui.lineEdit.setText( selectedCertificates.join( QLatin1String( " " ) ) );
    }
    void createCommand() {
        std::auto_ptr<SelectCertificateCommand> cmd( new SelectCertificateCommand );

        cmd->setMultipleCertificatesAllowed( multipleCertificatesAllowed );
        cmd->setOnlySigningCertificatesAllowed( onlySigningCertificatesAllowed );
        cmd->setOnlyEncryptionCertificatesAllowed( onlyEncryptionCertificatesAllowed );
        cmd->setOnlyOpenPGPCertificatesAllowed( onlyOpenPGPCertificatesAllowed );
        cmd->setOnlyX509CertificatesAllowed( onlyX509CertificatesAllowed );
        cmd->setOnlySecretKeysAllowed( onlySecretKeysAllowed );

        cmd->setSelectedCertificates( selectedCertificates );

        if ( const QWidget * const window = q->window() )
#if QT_VERSION < 0x040400
            cmd->setParentWId( window->winId() );
#else
            cmd->setParentWId( window->effectiveWinId() );
#endif

        connect( cmd.get(), SIGNAL(finished()), q, SLOT(slotCommandFinished()) );

        command = cmd.release();
    }

    void slotButtonClicked();
    void slotCommandFinished();

private:
    QStringList selectedCertificates;

    QPointer<SelectCertificateCommand> command;

    bool multipleCertificatesAllowed : 1;
    bool onlySigningCertificatesAllowed : 1;
    bool onlyEncryptionCertificatesAllowed : 1;
    bool onlyOpenPGPCertificatesAllowed : 1;
    bool onlyX509CertificatesAllowed : 1;
    bool onlySecretKeysAllowed : 1;

    struct Ui {
        QLineEdit lineEdit;
        QPushButton button;
        QHBoxLayout hlay;

        explicit Ui( CertificateRequester * qq )
            : lineEdit( qq ),
              button( tr("Change..."), qq ),
              hlay( qq )
        {
            lineEdit.setObjectName( QLatin1String( "lineEdit" ) );
            button.setObjectName( QLatin1String( "button" ) );
            hlay.setObjectName( QLatin1String( "hlay" ) );

            hlay.addWidget( &lineEdit, 1 );
            hlay.addWidget( &button );

            lineEdit.setReadOnly( true );

            connect( &button, SIGNAL(clicked()),
                     qq, SLOT(slotButtonClicked()) );
        }

    } ui;
};

CertificateRequester::CertificateRequester( QWidget * p, Qt::WindowFlags f )
    : QWidget( p, f ), d( new Private( this ) )
{

}

CertificateRequester::~CertificateRequester() {
    delete d; d = 0;
}



void CertificateRequester::setMultipleCertificatesAllowed( bool allow ) {
    if ( allow == d->multipleCertificatesAllowed )
        return;
    d->multipleCertificatesAllowed = allow;
}

bool CertificateRequester::multipleCertificatesAllowed() const {
    return d->multipleCertificatesAllowed;
}


void CertificateRequester::setOnlySigningCertificatesAllowed( bool allow ) {
    if ( allow == d->onlySigningCertificatesAllowed )
        return;
    d->onlySigningCertificatesAllowed = allow;
}

bool CertificateRequester::onlySigningCertificatesAllowed() const {
    return d->onlySigningCertificatesAllowed;
}


void CertificateRequester::setOnlyEncryptionCertificatesAllowed( bool allow ) {
    if ( allow == d->onlyEncryptionCertificatesAllowed )
        return;
    d->onlyEncryptionCertificatesAllowed = allow;
}

bool CertificateRequester::onlyEncryptionCertificatesAllowed() const {
    return d->onlyEncryptionCertificatesAllowed;
}


void CertificateRequester::setOnlyOpenPGPCertificatesAllowed( bool allow ) {
    if ( allow == d->onlyOpenPGPCertificatesAllowed )
        return;
    d->onlyOpenPGPCertificatesAllowed = allow;
}

bool CertificateRequester::onlyOpenPGPCertificatesAllowed() const {
    return d->onlyOpenPGPCertificatesAllowed;
}


void CertificateRequester::setOnlyX509CertificatesAllowed( bool allow ) {
    if ( allow == d->onlyX509CertificatesAllowed )
        return;
    d->onlyX509CertificatesAllowed = allow;
}

bool CertificateRequester::onlyX509CertificatesAllowed() const {
    return d->onlyX509CertificatesAllowed;
}


void CertificateRequester::setOnlySecretKeysAllowed( bool allow ) {
    if ( allow == d->onlySecretKeysAllowed )
        return;
    d->onlySecretKeysAllowed = allow;
}

bool CertificateRequester::onlySecretKeysAllowed() const {
    return d->onlySecretKeysAllowed;
}


void CertificateRequester::setSelectedCertificates( const QStringList & certs ) {
    if ( certs == d->selectedCertificates )
        return;
    d->selectedCertificates = certs;
    d->updateLineEdit();
    /*emit*/ selectedCertificatesChanged( certs );
}

QStringList CertificateRequester::selectedCertificates() const {
    return d->selectedCertificates;
}


void CertificateRequester::setSelectedCertificate( const QString & cert ) {
    setSelectedCertificates( QStringList( cert ) );
}

QString CertificateRequester::selectedCertificate() const {
    return d->selectedCertificates.empty() ? QString() : d->selectedCertificates.front() ;
}

void CertificateRequester::Private::slotButtonClicked() {
    if ( command )
        return;
    createCommand();
    command->start();
    ui.button.setEnabled( false );
}

void CertificateRequester::Private::slotCommandFinished() {
    if ( command->wasCanceled() )
        /* do nothing */;
    else if ( command->error() )
        QMessageBox::information( q,
                                  tr("Kleopatra Error"),
                                  tr("There was an error while connecting to Kleopatra: %1" )
                                  .arg( command->errorString() ) );
    else
        q->setSelectedCertificates( command->selectedCertificates() );
    ui.button.setEnabled( true );
    delete command;
}

#include "moc_certificaterequester.cpp"
