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KFile

kfilewidget.cpp

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// -*- c++ -*-
/* This file is part of the KDE libraries
    Copyright (C) 1997, 1998 Richard Moore <rich@kde.org>
                  1998 Stephan Kulow <coolo@kde.org>
                  1998 Daniel Grana <grana@ie.iwi.unibe.ch>
                  1999,2000,2001,2002,2003 Carsten Pfeiffer <pfeiffer@kde.org>
                  2003 Clarence Dang <dang@kde.org>
                  2007 David Faure <faure@kde.org>
                  2008 Rafael Fernández López <ereslibre@kde.org>

    This library 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.

    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 "kfilewidget.h"

#include "kfileplacesview.h"
#include "kfileplacesmodel.h"
#include "kfilebookmarkhandler_p.h"
#include "kurlcombobox.h"
#include "kurlnavigator.h"
#include "kfilepreviewgenerator.h"
#include <config-kfile.h>

#include <kactioncollection.h>
#include <kdiroperator.h>
#include <kdirselectdialog.h>
#include <kfilefiltercombo.h>
#include <kimagefilepreview.h>
#include <kmenu.h>
#include <kmimetype.h>
#include <kpushbutton.h>
#include <krecentdocument.h>
#include <ktoolbar.h>
#include <kurlcompletion.h>
#include <kuser.h>
#include <kprotocolmanager.h>
#include <kio/job.h>
#include <kio/jobuidelegate.h>
#include <kio/netaccess.h>
#include <kio/scheduler.h>
#include <krecentdirs.h>
#include <kdebug.h>
#include <kio/kfileitemdelegate.h>

#include <QtGui/QCheckBox>
#include <QtGui/QDockWidget>
#include <QtGui/QLayout>
#include <QtGui/QLabel>
#include <QtGui/QLineEdit>
#include <QtGui/QSplitter>
#include <QtGui/QAbstractProxyModel>
#include <QtCore/QFSFileEngine>
#include <kshell.h>
#include <kmessagebox.h>
#include <kauthorized.h>

class KFileWidgetPrivate
{
public:
    KFileWidgetPrivate(KFileWidget *widget)
        : q(widget),
          boxLayout(0),
          placesDock(0),
          placesView(0),
          placesViewSplitter(0),
          placesViewWidth(-1),
          labeledCustomWidget(0),
          bottomCustomWidget(0),
          autoSelectExtCheckBox(0),
          operationMode(KFileWidget::Opening),
          bookmarkHandler(0),
          toolbar(0),
          locationEdit(0),
          ops(0),
          filterWidget(0),
          autoSelectExtChecked(false),
          keepLocation(false),
          hasView(false),
          hasDefaultFilter(false),
          inAccept(false),
          dummyAdded(false),
          confirmOverwrite(false),
          differentHierarchyLevelItemsEntered(false),
          previewGenerator(0),
          iconSizeSlider(0)
    {
    }

    ~KFileWidgetPrivate()
    {
        delete bookmarkHandler; // Should be deleted before ops!
        delete ops;
    }

    void updateLocationWhatsThis();
    void updateAutoSelectExtension();
    void initSpeedbar();
    void initGUI();
    void readConfig(KConfigGroup &configGroup);
    void writeConfig(KConfigGroup &configGroup);
    void setNonExtSelection();
    void setLocationText(const KUrl&);
    void setLocationText(const KUrl::List&);
    void appendExtension(KUrl &url);
    void updateLocationEditExtension(const QString &);
    void updateFilter();
    KUrl::List& parseSelectedUrls();
    KUrl::List tokenize(const QString& line) const;
    void readRecentFiles(KConfigGroup &cg);
    void saveRecentFiles(KConfigGroup &cg);
    void multiSelectionChanged();

    KUrl getCompleteUrl(const QString&) const;

    void setDummyHistoryEntry(const QString& text, const QPixmap& icon = QPixmap(),
                              bool usePreviousPixmapIfNull = true);

    void removeDummyHistoryEntry();

    bool toOverwrite(const KUrl&);

    // private slots
    void _k_slotLocationChanged( const QString& );
    void _k_urlEntered( const KUrl& );
    void _k_enterUrl( const KUrl& );
    void _k_enterUrl( const QString& );
    void _k_locationAccepted( const QString& );
    void _k_slotFilterChanged();
    void _k_fileHighlighted( const KFileItem& );
    void _k_fileSelected( const KFileItem& );
    void _k_slotLoadingFinished();
    void _k_fileCompletion( const QString& );
    void _k_toggleSpeedbar( bool );
    void _k_toggleBookmarks( bool );
    void _k_slotAutoSelectExtClicked();
    void _k_placesViewSplitterMoved(int, int);
    void _k_activateUrlNavigator();
    void _k_zoomOutIconsSize();
    void _k_zoomInIconsSize();

    void addToRecentDocuments();

    QString locationEditCurrentText() const;

    static KUrl mostLocalUrl(const KUrl &url);

    KFileWidget* q;

    // the last selected url
    KUrl url;

    // the selected filenames in multiselection mode -- FIXME
    QString filenames;

    // now following all kind of widgets, that I need to rebuild
    // the geometry management
    QBoxLayout *boxLayout;
    QGridLayout *lafBox;
    QVBoxLayout *vbox;

    QLabel *locationLabel;
    QWidget *opsWidget;
    QWidget *pathSpacer;

    QLabel *filterLabel;
    KUrlNavigator *urlNavigator;
    KPushButton *okButton, *cancelButton;
    QDockWidget *placesDock;
    KFilePlacesView *placesView;
    QSplitter *placesViewSplitter;
    // caches the places view width. This value will be updated when the splitter
    // is moved. This allows us to properly set a value when the dialog itself
    // is resized
    int placesViewWidth;

    QWidget *labeledCustomWidget;
    QWidget *bottomCustomWidget;

    // Automatically Select Extension stuff
    QCheckBox *autoSelectExtCheckBox;
    QString extension; // current extension for this filter

    QList<KIO::StatJob*> statJobs;

    KUrl::List urlList; //the list of selected urls

    KFileWidget::OperationMode operationMode;

    // The file class used for KRecentDirs
    QString fileClass;

    KFileBookmarkHandler *bookmarkHandler;

    KActionMenu* bookmarkButton;

    KToolBar *toolbar;
    KUrlComboBox *locationEdit;
    KDirOperator *ops;
    KFileFilterCombo *filterWidget;

    KFilePlacesModel *model;

    // whether or not the _user_ has checked the above box
    bool autoSelectExtChecked : 1;

    // indicates if the location edit should be kept or cleared when changing
    // directories
    bool keepLocation : 1;

    // the KDirOperators view is set in KFileWidget::show(), so to avoid
    // setting it again and again, we have this nice little boolean :)
    bool hasView : 1;

    bool hasDefaultFilter : 1; // necessary for the operationMode
    bool autoDirectoryFollowing : 1;
    bool inAccept : 1; // true between beginning and end of accept()
    bool dummyAdded : 1; // if the dummy item has been added. This prevents the combo from having a
                     // blank item added when loaded
    bool confirmOverwrite : 1;
    bool differentHierarchyLevelItemsEntered;

    KFilePreviewGenerator *previewGenerator;
    QSlider *iconSizeSlider;
};

K_GLOBAL_STATIC(KUrl, lastDirectory) // to set the start path

static const char autocompletionWhatsThisText[] = I18N_NOOP("<qt>While typing in the text area, you may be presented "
                                                  "with possible matches. "
                                                  "This feature can be controlled by clicking with the right mouse button "
                                                  "and selecting a preferred mode from the <b>Text Completion</b> menu.")  "</qt>";

// returns true if the string contains "<a>:/" sequence, where <a> is at least 2 alpha chars
static bool containsProtocolSection( const QString& string )
{
    int len = string.length();
    static const char prot[] = ":/";
    for (int i=0; i < len;) {
        i = string.indexOf( QLatin1String(prot), i );
        if (i == -1)
            return false;
        int j=i-1;
        for (; j >= 0; j--) {
            const QChar& ch( string[j] );
            if (ch.toAscii() == 0 || !ch.isLetter())
                break;
            if (ch.isSpace() && (i-j-1) >= 2)
                return true;
        }
        if (j < 0 && i >= 2)
            return true; // at least two letters before ":/"
        i += 3; // skip : and / and one char
    }
    return false;
}

KFileWidget::KFileWidget( const KUrl& _startDir, QWidget *parent )
    : QWidget(parent), KAbstractFileWidget(), d(new KFileWidgetPrivate(this))
{
    KUrl startDir(_startDir);
    QString filename;

    d->okButton = new KPushButton(KStandardGuiItem::ok(), this);
    d->okButton->setDefault(true);
    d->cancelButton = new KPushButton(KStandardGuiItem::cancel(), this);
    // The dialog shows them
    d->okButton->hide();
    d->cancelButton->hide();

    d->opsWidget = new QWidget(this);
    QVBoxLayout *opsWidgetLayout = new QVBoxLayout(d->opsWidget);
    opsWidgetLayout->setMargin(0);
    //d->toolbar = new KToolBar(this, true);
    d->toolbar = new KToolBar(d->opsWidget, true);
    d->toolbar->setObjectName("KFileWidget::toolbar");
    d->toolbar->setMovable(false);
    opsWidgetLayout->addWidget(d->toolbar);

    d->model = new KFilePlacesModel(this);
    d->urlNavigator = new KUrlNavigator(d->model, startDir, d->opsWidget); //d->toolbar);
    d->urlNavigator->setPlacesSelectorVisible(false);
    opsWidgetLayout->addWidget(d->urlNavigator);

    KUrl u;
    KUrlComboBox *pathCombo = d->urlNavigator->editor();
#ifdef Q_WS_WIN
    foreach( const QFileInfo &drive,QFSFileEngine::drives() )
    {
        u.setPath( drive.filePath() );
        pathCombo->addDefaultUrl(u,
                                 KIO::pixmapForUrl( u, 0, KIconLoader::Small ),
                                 i18n("Drive: %1",  u.toLocalFile()));
    }
#else
    u.setPath(QDir::rootPath());
    pathCombo->addDefaultUrl(u,
                             KIO::pixmapForUrl(u, 0, KIconLoader::Small),
                             u.toLocalFile());
#endif

    u.setPath(QDir::homePath());
    pathCombo->addDefaultUrl(u, KIO::pixmapForUrl(u, 0, KIconLoader::Small),
                             u.path(KUrl::AddTrailingSlash));

    KUrl docPath;
    docPath.setPath( KGlobalSettings::documentPath() );
    if ( (u.path(KUrl::AddTrailingSlash) != docPath.path(KUrl::AddTrailingSlash)) &&
          QDir(docPath.path(KUrl::AddTrailingSlash)).exists() )
    {
        pathCombo->addDefaultUrl( docPath,
                                  KIO::pixmapForUrl( docPath, 0, KIconLoader::Small ),
                                  docPath.path(KUrl::AddTrailingSlash));
    }

    u.setPath( KGlobalSettings::desktopPath() );
    pathCombo->addDefaultUrl(u,
                             KIO::pixmapForUrl(u, 0, KIconLoader::Small),
                             u.path(KUrl::AddTrailingSlash));

    KIO::StatJob *statJob = KIO::stat(startDir, KIO::HideProgressInfo);
    bool res = KIO::NetAccess::synchronousRun(statJob, 0);
    if (res) {
        if (!statJob->statResult().isDir()) {
            startDir.adjustPath(KUrl::RemoveTrailingSlash);
            filename = startDir.fileName();
            startDir.setFileName(QString());
        }
    }

    d->url = getStartUrl( startDir, d->fileClass );

    d->ops = new KDirOperator(d->url, d->opsWidget);
    d->ops->setObjectName( "KFileWidget::ops" );
    opsWidgetLayout->addWidget(d->ops);
    connect(d->ops, SIGNAL(urlEntered(const KUrl&)),
            SLOT(_k_urlEntered(const KUrl&)));
    connect(d->ops, SIGNAL(fileHighlighted(const KFileItem &)),
            SLOT(_k_fileHighlighted(const KFileItem &)));
    connect(d->ops, SIGNAL(fileSelected(const KFileItem &)),
            SLOT(_k_fileSelected(const KFileItem &)));
    connect(d->ops, SIGNAL(finishedLoading()),
            SLOT(_k_slotLoadingFinished()));

    d->ops->setupMenu(KDirOperator::SortActions |
                   KDirOperator::FileActions |
                   KDirOperator::ViewActions);
    KActionCollection *coll = d->ops->actionCollection();

    // add nav items to the toolbar
    //
    // NOTE:  The order of the button icons here differs from that
    // found in the file manager and web browser, but has been discussed
    // and agreed upon on the kde-core-devel mailing list:
    //
    // http://lists.kde.org/?l=kde-core-devel&m=116888382514090&w=2

    coll->action( "up" )->setWhatsThis(i18n("<qt>Click this button to enter the parent folder.<br /><br />"
                                            "For instance, if the current location is file:/home/%1 clicking this "
                                            "button will take you to file:/home.</qt>",  KUser().loginName() ));

    coll->action( "back" )->setWhatsThis(i18n("Click this button to move backwards one step in the browsing history."));
    coll->action( "forward" )->setWhatsThis(i18n("Click this button to move forward one step in the browsing history."));

    coll->action( "reload" )->setWhatsThis(i18n("Click this button to reload the contents of the current location."));
    coll->action( "mkdir" )->setShortcut( QKeySequence(Qt::Key_F10) );
    coll->action( "mkdir" )->setWhatsThis(i18n("Click this button to create a new folder."));

    KAction *goToNavigatorAction = coll->addAction( "gotonavigator", this, SLOT( _k_activateUrlNavigator() ) );
    goToNavigatorAction->setShortcut( QKeySequence(Qt::CTRL + Qt::Key_L) );

    KToggleAction *showSidebarAction =
        new KToggleAction(i18n("Show Places Navigation Panel"), this);
    coll->addAction("toggleSpeedbar", showSidebarAction);
    showSidebarAction->setShortcut( QKeySequence(Qt::Key_F9) );
    connect( showSidebarAction, SIGNAL( toggled( bool ) ),
             SLOT( _k_toggleSpeedbar( bool )) );

    KToggleAction *showBookmarksAction =
        new KToggleAction(i18n("Show Bookmarks"), this);
    coll->addAction("toggleBookmarks", showBookmarksAction);
    connect( showBookmarksAction, SIGNAL( toggled( bool ) ),
             SLOT( _k_toggleBookmarks( bool )) );

    KActionMenu *menu = new KActionMenu( KIcon("configure"), i18n("Options"), this);
    coll->addAction("extra menu", menu);
    menu->setWhatsThis(i18n("<qt>This is the preferences menu for the file dialog. "
                            "Various options can be accessed from this menu including: <ul>"
                            "<li>how files are sorted in the list</li>"
                            "<li>types of view, including icon and list</li>"
                            "<li>showing of hidden files</li>"
                            "<li>the Places navigation panel</li>"
                            "<li>file previews</li>"
                            "<li>separating folders from files</li></ul></qt>"));
    menu->addAction(coll->action("sorting menu"));
    menu->addAction(coll->action("view menu"));
    menu->addSeparator();
    menu->addAction(coll->action("decoration menu"));
    menu->addSeparator();
    coll->action( "show hidden" )->setShortcut( QKeySequence(Qt::Key_F8) );
    menu->addAction( coll->action( "show hidden" ));
    menu->addAction( showSidebarAction );
    menu->addAction( showBookmarksAction );
    coll->action( "inline preview" )->setShortcut( QKeySequence(Qt::Key_F11) );
    menu->addAction( coll->action( "preview" ));

    menu->setDelayed( false );
    connect( menu->menu(), SIGNAL( aboutToShow() ),
             d->ops, SLOT( updateSelectionDependentActions() ));

    d->iconSizeSlider = new QSlider(this);
    d->iconSizeSlider->setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Fixed);
    d->iconSizeSlider->setOrientation(Qt::Horizontal);
    d->iconSizeSlider->setMinimum(0);
    d->iconSizeSlider->setMaximum(100);
    connect(d->iconSizeSlider, SIGNAL(valueChanged(int)),
            d->ops, SLOT(setIconsZoom(int)));
    connect(d->ops, SIGNAL(currentIconSizeChanged(int)),
            d->iconSizeSlider, SLOT(setValue(int)));

    KAction *furtherAction = new KAction(KIcon("zoom-out"), i18n("Zoom out"), this);
    connect(furtherAction, SIGNAL(triggered()), SLOT(_k_zoomOutIconsSize()));
    KAction *closerAction = new KAction(KIcon("zoom-in"), i18n("Zoom in"), this);
    connect(closerAction, SIGNAL(triggered()), SLOT(_k_zoomInIconsSize()));

    QWidget *midSpacer = new QWidget(this);
    midSpacer->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);

    QAction *separator = new QAction(this);
    separator->setSeparator(true);

    QAction *separator2 = new QAction(this);
    separator2->setSeparator(true);

    QAction *separator3 = new QAction(this);
    separator3->setSeparator(true);

    d->toolbar->addAction(coll->action("back" ));
    d->toolbar->addAction(coll->action("forward"));
    d->toolbar->addAction(coll->action("up"));
    d->toolbar->addAction(coll->action("reload"));
    d->toolbar->addAction(separator);
    d->toolbar->addAction(coll->action("short view"));
    d->toolbar->addAction(coll->action("detailed view"));
    d->toolbar->addAction(separator2);
    d->toolbar->addAction(coll->action("inline preview"));
    d->toolbar->addWidget(midSpacer);
    d->toolbar->addAction(furtherAction);
    d->toolbar->addWidget(d->iconSizeSlider);
    d->toolbar->addAction(closerAction);
    d->toolbar->addAction(separator3);
    d->toolbar->addAction(coll->action("mkdir"));
    d->toolbar->addAction(menu);

    d->toolbar->setToolButtonStyle(Qt::ToolButtonIconOnly);
    d->toolbar->setMovable(false);

    KUrlCompletion *pathCompletionObj = new KUrlCompletion( KUrlCompletion::DirCompletion );
    pathCombo->setCompletionObject( pathCompletionObj );
    pathCombo->setAutoDeleteCompletionObject( true );

    connect( d->urlNavigator, SIGNAL( urlChanged( const KUrl&  )),
             this,  SLOT( _k_enterUrl( const KUrl& ) ));
    connect( d->urlNavigator, SIGNAL( returnPressed() ),
             d->ops,  SLOT( setFocus() ));

    QString whatsThisText;

    // the Location label/edit
    d->locationLabel = new QLabel(i18n("&Name:"), this);
    d->locationEdit = new KUrlComboBox(KUrlComboBox::Files, true, this);
    // Properly let the dialog be resized (to smaller). Otherwise we could have
    // huge dialogs that can't be resized to smaller (it would be as big as the longest
    // item in this combo box). (ereslibre)
    d->locationEdit->setSizeAdjustPolicy(QComboBox::AdjustToMinimumContentsLength);
    connect( d->locationEdit, SIGNAL( editTextChanged( const QString& ) ),
             SLOT( _k_slotLocationChanged( const QString& )) );

    d->updateLocationWhatsThis();
    d->locationLabel->setBuddy(d->locationEdit);

    KUrlCompletion *fileCompletionObj = new KUrlCompletion( KUrlCompletion::FileCompletion );
    d->locationEdit->setCompletionObject( fileCompletionObj );
    d->locationEdit->setAutoDeleteCompletionObject( true );
    connect( fileCompletionObj, SIGNAL( match( const QString& ) ),
             SLOT( _k_fileCompletion( const QString& )) );

    connect(d->locationEdit, SIGNAL( returnPressed( const QString&  )),
            this,  SLOT( _k_locationAccepted( const QString& ) ));

    // the Filter label/edit
    whatsThisText = i18n("<qt>This is the filter to apply to the file list. "
                         "File names that do not match the filter will not be shown.<p>"
                         "You may select from one of the preset filters in the "
                         "drop down menu, or you may enter a custom filter "
                         "directly into the text area.</p><p>"
                         "Wildcards such as * and ? are allowed.</p></qt>");
    d->filterLabel = new QLabel(i18n("&Filter:"), this);
    d->filterLabel->setWhatsThis(whatsThisText);
    d->filterWidget = new KFileFilterCombo(this);
    // Properly let the dialog be resized (to smaller). Otherwise we could have
    // huge dialogs that can't be resized to smaller (it would be as big as the longest
    // item in this combo box). (ereslibre)
    d->filterWidget->setSizeAdjustPolicy(QComboBox::AdjustToMinimumContentsLength);
    d->filterWidget->setWhatsThis(whatsThisText);
    d->filterLabel->setBuddy(d->filterWidget);
    connect(d->filterWidget, SIGNAL(filterChanged()), SLOT(_k_slotFilterChanged()));

    // the Automatically Select Extension checkbox
    // (the text, visibility etc. is set in updateAutoSelectExtension(), which is called by readConfig())
    d->autoSelectExtCheckBox = new QCheckBox (this);
    d->autoSelectExtCheckBox->setStyleSheet(QString("QCheckBox { padding-top: %1px; }").arg(KDialog::spacingHint()));
    connect(d->autoSelectExtCheckBox, SIGNAL(clicked()), SLOT(_k_slotAutoSelectExtClicked()));

    d->initGUI(); // activate GM

    // read our configuration
    KSharedConfig::Ptr config = KGlobal::config();
    KConfigGroup viewConfigGroup(config, ConfigGroup);
    d->readConfig(viewConfigGroup);

    coll->action("inline preview")->setChecked(d->ops->isInlinePreviewShown());
    d->iconSizeSlider->setValue(d->ops->iconsZoom());

    KFilePreviewGenerator *pg = d->ops->previewGenerator();
    if (pg) {
        coll->action("inline preview")->setChecked(pg->isPreviewShown());
    }

    // we know it is not a dir, and we could stat it. Set it.
    if (!filename.isEmpty()) {
        d->locationEdit->lineEdit()->setText(filename);
    }

    d->locationEdit->setFocus();
}

KFileWidget::~KFileWidget()
{
    KSharedConfig::Ptr config = KGlobal::config();
    config->sync();

    delete d;
}

void KFileWidget::setLocationLabel(const QString& text)
{
    d->locationLabel->setText(text);
}

void KFileWidget::setFilter(const QString& filter)
{
    int pos = filter.indexOf('/');

    // Check for an un-escaped '/', if found
    // interpret as a MIME filter.

    if (pos > 0 && filter[pos - 1] != '\\') {
        QStringList filters = filter.split(" ", QString::SkipEmptyParts);
        setMimeFilter( filters );
        return;
    }

    // Strip the escape characters from
    // escaped '/' characters.

    QString copy (filter);
    for (pos = 0; (pos = copy.indexOf("\\/", pos)) != -1; ++pos)
        copy.remove(pos, 1);

    d->ops->clearFilter();
    d->filterWidget->setFilter(copy);
    d->ops->setNameFilter(d->filterWidget->currentFilter());
    d->hasDefaultFilter = false;
    d->filterWidget->setEditable( true );

    d->updateAutoSelectExtension ();
}

QString KFileWidget::currentFilter() const
{
    return d->filterWidget->currentFilter();
}

void KFileWidget::setMimeFilter( const QStringList& mimeTypes,
                                 const QString& defaultType )
{
    d->filterWidget->setMimeFilter( mimeTypes, defaultType );

    QStringList types = d->filterWidget->currentFilter().split(" ",QString::SkipEmptyParts); //QStringList::split(" ", d->filterWidget->currentFilter());
    types.append( QLatin1String( "inode/directory" ));
    d->ops->clearFilter();
    d->ops->setMimeFilter( types );
    d->hasDefaultFilter = !defaultType.isEmpty();
    d->filterWidget->setEditable( !d->hasDefaultFilter ||
                               d->operationMode != Saving );

    d->updateAutoSelectExtension ();
}

void KFileWidget::clearFilter()
{
    d->filterWidget->setFilter( QString() );
    d->ops->clearFilter();
    d->hasDefaultFilter = false;
    d->filterWidget->setEditable( true );

    d->updateAutoSelectExtension ();
}

QString KFileWidget::currentMimeFilter() const
{
    int i = d->filterWidget->currentIndex();
    if (d->filterWidget->showsAllTypes() && i == 0)
        return QString(); // The "all types" item has no mimetype

    return d->filterWidget->filters()[i];
}

KMimeType::Ptr KFileWidget::currentFilterMimeType()
{
    return KMimeType::mimeType( currentMimeFilter() );
}

void KFileWidget::setPreviewWidget(KPreviewWidgetBase *w) {
    d->ops->setPreviewWidget(w);
    d->ops->clearHistory();
    d->hasView = true;
}

KUrl KFileWidgetPrivate::getCompleteUrl(const QString &_url) const
{
//     kDebug(kfile_area) << "got url " << _url;

    QString url = KShell::tildeExpand(_url);
    KUrl u;

    if ( KUrl::isRelativeUrl(url) ) // only a full URL isn't relative. Even /path is.
    {
        if (!url.isEmpty() && !QDir::isRelativePath(url) ) // absolute path
            u.setPath( url );
        else
        {
            u = ops->url();
//             kDebug(kfile_area) << "ops url " << u;
            u.addPath( url ); // works for filenames and relative paths
//             kDebug(kfile_area) << "after adding path " << u;
            u.cleanPath(); // fix "dir/.."
//             kDebug(kfile_area) << "after cleaning path " << u;
        }
    }
    else // complete URL
        u = url;

//     kDebug(kfile_area) << "returning url " << u;

    return u;
}

// Called by KFileDialog
void KFileWidget::slotOk()
{
//     kDebug(kfile_area) << "slotOk\n";

    const KFileItemList items = d->ops->selectedItems();
    const QString locationEditCurrentText(KShell::tildeExpand(d->locationEditCurrentText()));
    KUrl::List locationEditCurrentTextList(d->tokenize(locationEditCurrentText));
    KFile::Modes mode = d->ops->mode();

    // if there is nothing to do, just return from here
    if (!locationEditCurrentTextList.count()) {
        return;
    }

    // Make sure that one of the modes was provided
    Q_ASSERT((mode & KFile::File) || (mode & KFile::Directory) || (mode & KFile::Files));

    // if we are on file mode, and the list of provided files/folder is greater than one, inform
    // the user about it
    if (locationEditCurrentTextList.count() > 1) {
        if (mode & KFile::File) {
            KMessageBox::sorry(this,
                               i18n("You can only select one file"),
                               i18n("More than one file provided"));
            return;
        }

        if (!d->differentHierarchyLevelItemsEntered) {     // avoid infinite recursion. running this
            KUrl::List urlList;                            // one time is always enough.
            int start = 0;
            KUrl topMostUrl;
            KIO::StatJob *statJob;
            bool res = false;

            // we need to check for a valid first url, so in theory we only iterate one time over
            // this loop. However it can happen that the user did
            // "home/foo/nonexistantfile" "boot/grub/menu.lst", so we look for a good first
            // candidate.
            while (!res && start < locationEditCurrentTextList.count()) {
                topMostUrl = locationEditCurrentTextList.at(start);
                statJob = KIO::stat(topMostUrl, KIO::HideProgressInfo);
                res = KIO::NetAccess::synchronousRun(statJob, 0);
                start++;
            }

            // if this is not a dir, strip the filename. after this we have an existant and valid
            // dir (if we stated correctly the file, setting a null filename won't make any bad).
            if (!statJob->statResult().isDir()) {
                topMostUrl.setFileName(QString());
            }

            // now the funny part. for the rest of filenames, go and look for the closest ancestor
            // of all them.
            for (int i = start; i < locationEditCurrentTextList.count(); ++i) {
                KUrl currUrl = locationEditCurrentTextList.at(i);
                KIO::StatJob *statJob = KIO::stat(currUrl, KIO::HideProgressInfo);
                bool res = KIO::NetAccess::synchronousRun(statJob, 0);
                if (res) {
                    // again, we don't care about filenames
                    if (!statJob->statResult().isDir()) {
                        currUrl.setFileName(QString());
                    }

                    // iterate while this item is contained on the top most url
                    while (!topMostUrl.isParentOf(currUrl)) {
                        topMostUrl = topMostUrl.upUrl();
                    }
                }
            }

            // now recalculate all paths for them being relative in base of the top most url
            for (int i = 0; i < locationEditCurrentTextList.count(); ++i) {
                locationEditCurrentTextList[i] = KUrl::relativeUrl(topMostUrl, locationEditCurrentTextList[i]);
            }

            d->ops->setUrl(topMostUrl, true);
            const bool signalsBlocked = d->locationEdit->lineEdit()->blockSignals(true);
            QStringList stringList;
            foreach (const KUrl &url, locationEditCurrentTextList) {
                stringList << url.prettyUrl();
            }
            d->locationEdit->lineEdit()->setText(QString("\"%1\"").arg(stringList.join("\" \"")));
            d->locationEdit->lineEdit()->blockSignals(signalsBlocked);

            d->differentHierarchyLevelItemsEntered = true;
            slotOk();
            return;
        }
    } else if (locationEditCurrentTextList.count()) {
        // if we are on file or files mode, and we have an absolute url written by
        // the user, convert it to relative
        if (!(mode & KFile::Directory) && (!KUrl::isRelativeUrl(locationEditCurrentText) ||
                                           QDir::isAbsolutePath(locationEditCurrentText))) {
            KUrl _url(locationEditCurrentText);
            KUrl url(_url.path(KUrl::RemoveTrailingSlash));
            url.setFileName(QString());
            d->ops->setUrl(url, true);
            const bool signalsBlocked = d->locationEdit->lineEdit()->blockSignals(true);
            d->locationEdit->lineEdit()->setText(_url.fileName());
            d->locationEdit->lineEdit()->blockSignals(signalsBlocked);
            slotOk();
            return;
        }
    }

    // restore it
    d->differentHierarchyLevelItemsEntered = false;

    // if we are on local mode, make sure we haven't got a remote base url
    if ((mode & KFile::LocalOnly) && !d->mostLocalUrl(d->url).isLocalFile()) {
        KMessageBox::sorry(this,
                           i18n("You can only select local files"),
                           i18n("Remote files not accepted"));
        return;
    }

    // locationEditCurrentTextList contains absolute paths
    // this is the general loop for the File and Files mode. Obviously we know
    // that the File mode will iterate only one time here
    bool directoryMode = (mode & KFile::Directory);
    bool onlyDirectoryMode = directoryMode && !(mode & KFile::File) && !(mode & KFile::Files);
    foreach (const KUrl &url, locationEditCurrentTextList) {
        d->url = url;
        KIO::StatJob *statJob = KIO::stat(url, KIO::HideProgressInfo);
        bool res = KIO::NetAccess::synchronousRun(statJob, 0);

        if (!KAuthorized::authorizeUrlAction("open", KUrl(), url)) {
            QString msg = KIO::buildErrorString(KIO::ERR_ACCESS_DENIED, d->url.prettyUrl());
            KMessageBox::error(this, msg);
            return;
        }

        if ((d->operationMode == Saving) && d->confirmOverwrite && !d->toOverwrite(url)) {
            return;
        }

        // if we are given a folder when not on directory mode, let's get into it
        if (res && !directoryMode && statJob->