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/* ============================================================
*
* This file is a part of the rekonq project
*
* Copyright (C) 2008-2010 by Andrea Diamantini <adjam7 at gmail dot com>
* Copyright (C) 2009-2010 by Lionel Chauvin <megabigbug@yahoo.fr>
*
*
* 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) version 3 or any later version
* accepted by the membership of KDE e.V. (or its successor approved
* by the membership of KDE e.V.), which shall act as a proxy
* defined in Section 14 of version 3 of the license.
*
* 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.  If not, see <http://www.gnu.org/licenses/>.
*
* ============================================================ */


// Self Includes
#include "webtab.h"
#include "webtab.moc"

// Auto Includes
#include "rekonq.h"

// Local Includes
#include "urlbar.h"
#include "previewselectorbar.h"
#include "rsswidget.h"
#include "walletbar.h"
#include "webpage.h"

// KDE Includes
#include <KWebWallet>

// Qt Includes
#include <QtGui/QVBoxLayout>


WebTab::WebTab(QWidget *parent)
        : QWidget(parent)
        , _view(new WebView(this))
        , _bar(new UrlBar(this))
        , _progress(0)
{
    setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

    QVBoxLayout *l = new QVBoxLayout(this);
    l->setMargin(0);
    l->setSpacing(0);

    l->addWidget(_view);
    _view->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

    // fix focus handling
    setFocusProxy(_view);

    KWebWallet *wallet = _view->page()->wallet();

    if (wallet)
    {
        connect(wallet, SIGNAL(saveFormDataRequested(const QString &, const QUrl &)),
                this, SLOT(createWalletBar(const QString &, const QUrl &)));
    }

    connect(_view, SIGNAL(loadProgress(int)), this, SLOT(updateProgress(int)));
    connect(_view, SIGNAL(loadFinished(bool)), this, SLOT(loadFinished(bool)));
}


WebTab::~WebTab()
{
    _walletBar.clear();
    _previewSelectorBar.clear();
}


// TODO:
// Import the "about" check and the one in protocolhandler
// in some (static?) methods in NewTabPage
KUrl WebTab::url()
{
    KUrl u = KUrl(view()->url());
    if (u.scheme() == QL1S("about"))
    {
        QWebElement rootElement = page()->mainFrame()->documentElement();
        if (rootElement.document().findAll("#rekonq-newtabpage").count() == 0)
            return u;
        if (rootElement.findAll(".favorites").count() > 0)
            return KUrl("about:favorites");
        if (rootElement.findAll(".closedTabs").count() > 0)
            return KUrl("about:closedTabs");
        if (rootElement.findAll(".history").count() > 0)
            return KUrl("about:history");
        if (rootElement.findAll(".bookmarks").count() > 0)
            return KUrl("about:bookmarks");
        if (rootElement.findAll(".downloads").count() > 0)
            return KUrl("about:downloads");
    }
    return u;
}


void WebTab::updateProgress(int p)
{
    _progress = p;
    emit loadProgressing();
}


void WebTab::loadFinished(bool)
{
    _progress = 0;
}


void WebTab::createWalletBar(const QString &key, const QUrl &url)
{
    // check if the url is in the wallet blacklist
    QString urlString = url.toString();
    QStringList blackList = ReKonfig::walletBlackList();
    if (blackList.contains(urlString))
        return;

    KWebWallet *wallet = page()->wallet();
    if(_walletBar.isNull()) {
        _walletBar = new WalletBar(this);
        _walletBar.data()->onSaveFormData(key, url);
        qobject_cast<QVBoxLayout *>(layout())->insertWidget(0, _walletBar.data() );
    } else {
        disconnect(wallet);
        _walletBar.data()->notifyUser();
    }

    connect(_walletBar.data(), SIGNAL(saveFormDataAccepted(const QString &)),
            wallet, SLOT(acceptSaveFormDataRequest(const QString &)), Qt::UniqueConnection);
    connect(_walletBar.data(), SIGNAL(saveFormDataRejected(const QString &)),
            wallet, SLOT(rejectSaveFormDataRequest(const QString &)), Qt::UniqueConnection);
}


void WebTab::createPreviewSelectorBar(int index)
{
    if(_previewSelectorBar.isNull()) {
        _previewSelectorBar = new PreviewSelectorBar(index, this);
        qobject_cast<QVBoxLayout *>(layout())->insertWidget(0, _previewSelectorBar.data());
    } else {
        disconnect(_previewSelectorBar.data());
        _previewSelectorBar.data()->setIndex(index);
        _previewSelectorBar.data()->notifyUser();
    }

    connect(page(),             SIGNAL(loadStarted()),      _previewSelectorBar.data(), SLOT(loadProgress()), Qt::UniqueConnection);
    connect(page(),             SIGNAL(loadProgress(int)),  _previewSelectorBar.data(), SLOT(loadProgress()), Qt::UniqueConnection);
    connect(page(),             SIGNAL(loadFinished(bool)), _previewSelectorBar.data(), SLOT(loadFinished()), Qt::UniqueConnection);
    connect(page()->mainFrame(), SIGNAL(urlChanged(QUrl)),  _previewSelectorBar.data(), SLOT(verifyUrl()), Qt::UniqueConnection);
}


bool WebTab::hasRSSInfo()
{
    QWebElementCollection col = page()->mainFrame()->findAllElements("link[type=\"application/rss+xml\"]");
    col.append(page()->mainFrame()->findAllElements("link[type=\"application/atom+xml\"]"));
    if (col.count() != 0)
        return true;

    return false;
}


void WebTab::showRSSInfo(QPoint pos)
{
    QWebElementCollection col = page()->mainFrame()->findAllElements("link[type=\"application/rss+xml\"]");
    col.append(page()->mainFrame()->findAllElements("link[type=\"application/atom+xml\"]"));

    QMap<KUrl, QString> map;

    foreach(const QWebElement &el, col)
    {
        QString urlString;
        if (el.attribute("href").startsWith(QL1S("http")))
            urlString = el.attribute("href");
        else
        {
            KUrl u = url();
            // NOTE
            // cd() is probably better than setPath() here,
            // for all those url sites just having a path
            if (u.cd(el.attribute("href")))
                urlString = u.toMimeDataString();
        }

        QString title = el.attribute("title");
        if (title.isEmpty())
            title = el.attribute("href");

        map.insert(KUrl(urlString), title);
    }

    RSSWidget *widget = new RSSWidget(map, window());
    widget->showAt(pos);
}