/*! @file

    @id $Id$
*/
//       1         2         3         4         5         6         7         8
// 45678901234567890123456789012345678901234567890123456789012345678901234567890

#include <ui_settings.h>
#include <QtWebKit/QWebSettings>
#include <QtCore/QSettings>
#include <QtCore/QMap>
#include <QtCore/QList>
#include <QtGui/QLineEdit>

#include <QtCore/QDebug>
#ifndef LOG
#define LOG qDebug()<<__PRETTY_FUNCTION__
#endif

class Settings: public QDialog, protected Ui::Settings {

    Q_OBJECT;

  public:

    typedef QMap<QString, QVariant> MimeTypes;

  public:

    Settings(MimeTypes mimetypes, QWidget* p=0,
             QSettings* settings=0, bool autoWrite=true):
        QDialog(p), _settings(settings),
        _autoWrite(autoWrite), _mimetypes(mimetypes) {
      
      setupUi(this);

      _attributes[QWebSettings::AutoLoadImages] =
        _settingAutoLoadImages;
      _attributes[QWebSettings::DnsPrefetchEnabled] =
        _settingDnsPrefetchEnabled;
      _attributes[QWebSettings::JavascriptEnabled] =
        _settingJavascriptEnabled;
      _attributes[QWebSettings::JavaEnabled] =
        _settingJavaEnabled;
      _attributes[QWebSettings::PluginsEnabled] =
        _settingPluginsEnabled;
      _attributes[QWebSettings::PrivateBrowsingEnabled] =
        _settingPrivateBrowsingEnabled;
      _attributes[QWebSettings::JavascriptCanOpenWindows] =
        _settingJavascriptCanOpenWindows;
      _attributes[QWebSettings::JavascriptCanAccessClipboard] =
        _settingJavascriptCanAccessClipboard;
      _attributes[QWebSettings::DeveloperExtrasEnabled] =
        _settingDeveloperExtrasEnabled;
      _attributes[QWebSettings::SpatialNavigationEnabled] =
        _settingSpatialNavigationEnabled;
      _attributes[QWebSettings::LinksIncludedInFocusChain] =
        _settingLinksIncludedInFocusChain;
      _attributes[QWebSettings::ZoomTextOnly] =
        _settingZoomTextOnly;
      _attributes[QWebSettings::PrintElementBackgrounds] =
        _settingPrintElementBackgrounds;
      _attributes[QWebSettings::OfflineStorageDatabaseEnabled] =
        _settingOfflineStorageDatabaseEnabled;
      _attributes[QWebSettings::OfflineWebApplicationCacheEnabled] =
        _settingOfflineWebApplicationCacheEnabled;
      _attributes[QWebSettings::LocalStorageEnabled] =
        _settingLocalStorageEnabled;
      _attributes[QWebSettings::LocalContentCanAccessRemoteUrls] =
        _settingLocalContentCanAccessRemoteUrls;
      _attributes[QWebSettings::LocalContentCanAccessFileUrls] =
        _settingLocalContentCanAccessFileUrls;
      _attributes[QWebSettings::XSSAuditingEnabled] =
        _settingXSSAuditingEnabled;
      _attributes[QWebSettings::AcceleratedCompositingEnabled] =
        _settingAcceleratedCompositingEnabled;
      _attributes[QWebSettings::TiledBackingStoreEnabled] =
        _settingTiledBackingStoreEnabled;
      _attributes[QWebSettings::FrameFlatteningEnabled] =
        _settingFrameFlatteningEnabled;
      _attributes[QWebSettings::SiteSpecificQuirksEnabled] =
        _settingSiteSpecificQuirksEnabled;

      load(!_mimetypes.size());
      on__buttons_rejected();
    }

    void setSettings(QSettings* settings) {
      _settings = settings;
    }

    void setAttribute(QWebSettings::WebAttribute attr, bool state) {
      //LOG;
      QWebSettings::globalSettings()->setAttribute(attr, state);
      _attributes[attr]->setChecked(state);
    }

    const MimeTypes& mimetypes() const {
      return _mimetypes;
    }

    bool save() {
      LOG;
      if (!_settings || !_settings->isWritable()) return false;
      // Attributes
      for (Attributes::iterator attribute(_attributes.begin());
           attribute!=_attributes.end(); ++attribute)
        _settings->setValue
          (QString("QWebSettings/%1").arg(attribute->first),
           QWebSettings::globalSettings()->testAttribute(attribute->first));
      // MimeTypes
      _settings->setValue("QWebSettings/MimeTypes", _mimetypes);
      return true;
    }

    bool load(bool overwriteMimeTypes=true) {
      LOG;
      if (!_settings) return false;
      // Attributes
      for (Attributes::iterator attribute(_attributes.begin());
           attribute!=_attributes.end(); ++attribute) {
        QVariant val
          (_settings->value
           (QString("QWebSettings/%1").arg(attribute->first),
            QWebSettings::globalSettings()->testAttribute(attribute->first)));
        if (val.isValid() && val.canConvert(QVariant::Bool))
          setAttribute(attribute->first, val.toBool());
      }
      // MimeTypes
      if (!overwriteMimeTypes) return true;
      QVariant val(_settings->value("QWebSettings/MimeTypes"));
      if (val.isValid() && val.canConvert(QVariant::Map))
        _mimetypes = val.toMap();
      return true;
    }

  private Q_SLOTS:

    void on__buttons_accepted() {
      LOG;
      // Attributes
      for (Attributes::iterator attribute(_attributes.begin());
           attribute!=_attributes.end(); ++attribute)
        QWebSettings::globalSettings()
          ->setAttribute(attribute->first, attribute->second->isChecked());
      // MimeTypes
      _mimetypes.clear();
      for (int row(_mimeTypeTable->rowCount()); row--;)
        _mimetypes[qobject_cast<QLineEdit*>(_mimeTypeTable->cellWidget(row, 0))
                   ->text()] =
          QStringList()
          <<qobject_cast<QLineEdit*>(_mimeTypeTable->cellWidget(row, 1))
          ->text()
          <<qobject_cast<QLineEdit*>(_mimeTypeTable->cellWidget(row, 2))
          ->text();
      // Save
      if (_autoWrite) save();
    }

    void on__buttons_rejected() {
      LOG;
      // Attributes
      for (Attributes::iterator attribute(_attributes.begin());
           attribute!=_attributes.end(); ++attribute)
        attribute->second->setChecked
          (QWebSettings::globalSettings()->testAttribute(attribute->first));
      // MimeTypes
      _mimeTypeTable->setRowCount(_mimetypes.size());
      _mimeTypeTable->verticalHeader()->show();
      _mimeTypeTable->horizontalHeader()->show();
      _mimeTypeTable->horizontalHeader()->setStretchLastSection(true);
      int row(0);
      for (MimeTypes::iterator it(_mimetypes.begin());
           it!=_mimetypes.end(); ++it, ++row) {
        LOG<<"MimeType:"<<it.key()<<it.value().toStringList();
        _mimeTypeTable->setCellWidget
          (row, 0, new QLineEdit(it.key()));
        _mimeTypeTable->setCellWidget
          (row, 1, new QLineEdit(it.value().toStringList().at(0)));
        _mimeTypeTable->setCellWidget
          (row, 2, new QLineEdit(it.value().toStringList().at(1)));
      }
    }

    void on__addMimeType_pressed() {
      _mimeTypeTable->setRowCount(_mimeTypeTable->rowCount()+1);
      _mimeTypeTable->setCellWidget(_mimeTypeTable->rowCount()-1, 0,
                                    new QLineEdit);
      _mimeTypeTable->setCellWidget(_mimeTypeTable->rowCount()-1, 1,
                                    new QLineEdit);
      _mimeTypeTable->setCellWidget(_mimeTypeTable->rowCount()-1, 2,
                                    new QLineEdit);
    }

    void on__removeMimeType_pressed() {
      QList<QTableWidgetSelectionRange> ranges
        (_mimeTypeTable->selectedRanges());
      if (ranges.isEmpty()) return;
      for (int begin(ranges.at(0).topRow()), count(ranges.at(0).rowCount());
           count; --count)
        _mimeTypeTable->removeRow(begin);
    }
    
  private:

    typedef std::map<QWebSettings::WebAttribute, QCheckBox*> Attributes ;
    Attributes _attributes;
    QSettings* _settings;
    bool _autoWrite;
    MimeTypes _mimetypes;

};