qfiledialog.cpp

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#include <qvariant.h>
#include <private/qwidgetitemdata_p.h>
#include "qfiledialog.h"

#ifndef QT_NO_FILEDIALOG
#include "qfiledialog_p.h"
#include <qfontmetrics.h>
#include <qaction.h>
#include <qheaderview.h>
#include <qshortcut.h>
#include <qgridlayout.h>
#include <qmenu.h>
#include <qmessagebox.h>
#include <qinputdialog.h>
#include <stdlib.h>
#include <qsettings.h>
#include <qdebug.h>
#include <qapplication.h>
#include <qstylepainter.h>
#include <itemviews/qfileiconprovider_p.h>
#if !defined(Q_WS_WINCE) && !defined(Q_OS_SYMBIAN)
#include "ui_qfiledialog.h"
#else
#define Q_EMBEDDED_SMALLSCREEN
#include "ui_qfiledialog_embedded.h"
#if defined(Q_OS_WINCE)
extern bool qt_priv_ptr_valid;
#endif
#if defined(Q_OS_UNIX)
#include <pwd.h>
#endif
#endif

QT_BEGIN_NAMESPACE

Q_GLOBAL_STATIC(QString, lastVisitedDir)

/*
    \internal

    Exported hooks that can be used to customize the static functions.
 */
typedef QString (*_qt_filedialog_existing_directory_hook)(QWidget *parent, const QString &caption, const QString &dir, QFileDialog::Options options);
Q_GUI_EXPORT _qt_filedialog_existing_directory_hook qt_filedialog_existing_directory_hook = 0;

typedef QString (*_qt_filedialog_open_filename_hook)(QWidget * parent, const QString &caption, const QString &dir, const QString &filter, QString *selectedFilter, QFileDialog::Options options);
Q_GUI_EXPORT _qt_filedialog_open_filename_hook qt_filedialog_open_filename_hook = 0;

typedef QStringList (*_qt_filedialog_open_filenames_hook)(QWidget * parent, const QString &caption, const QString &dir, const QString &filter, QString *selectedFilter, QFileDialog::Options options);
Q_GUI_EXPORT _qt_filedialog_open_filenames_hook qt_filedialog_open_filenames_hook = 0;

typedef QString (*_qt_filedialog_save_filename_hook)(QWidget * parent, const QString &caption, const QString &dir, const QString &filter, QString *selectedFilter, QFileDialog::Options options);
Q_GUI_EXPORT _qt_filedialog_save_filename_hook qt_filedialog_save_filename_hook = 0;

#if defined(Q_WS_WIN) || defined(Q_WS_MAC)
bool Q_GUI_EXPORT qt_use_native_dialogs = true; // for the benefit of testing tools, until we have a proper API
#endif

QT_BEGIN_INCLUDE_NAMESPACE
#ifdef Q_WS_WIN
#include <qwindowsstyle.h>
#endif
#include <qshortcut.h>
#ifdef Q_WS_MAC
#include <qmacstyle_mac.h>
#endif
QT_END_INCLUDE_NAMESPACE

QFileDialog::QFileDialog(QWidget *parent, Qt::WindowFlags f)
    : QDialog(*new QFileDialogPrivate, parent, f)
{
    Q_D(QFileDialog);
    d->init();
    d->lineEdit()->selectAll();
}

QFileDialog::QFileDialog(QWidget *parent,
                     const QString &caption,
                     const QString &directory,
                     const QString &filter)
    : QDialog(*new QFileDialogPrivate, parent, 0)
{
    Q_D(QFileDialog);
    d->init(directory, filter, caption);
    d->lineEdit()->selectAll();
}

QFileDialog::QFileDialog(const QFileDialogArgs &args)
    : QDialog(*new QFileDialogPrivate, args.parent, 0)
{
    Q_D(QFileDialog);
    d->init(args.directory, args.filter, args.caption);
    setFileMode(args.mode);
    setOptions(args.options);
    selectFile(args.selection);
    d->lineEdit()->selectAll();
}

QFileDialog::~QFileDialog()
{
    Q_D(QFileDialog);
#ifndef QT_NO_SETTINGS
    QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
    settings.beginGroup(QLatin1String("Qt"));
    settings.setValue(QLatin1String("filedialog"), saveState());
#endif
    d->deleteNativeDialog_sys();
}

void QFileDialog::setSidebarUrls(const QList<QUrl> &urls)
{
    Q_D(QFileDialog);
    d->qFileDialogUi->sidebar->setUrls(urls);
}

QList<QUrl> QFileDialog::sidebarUrls() const
{
    Q_D(const QFileDialog);
    return d->qFileDialogUi->sidebar->urls();
}

static const qint32 QFileDialogMagic = 0xbe;

const char *qt_file_dialog_filter_reg_exp =
"^(.*)\\(([a-zA-Z0-9_.*? +;#\\-\\[\\]@\\{\\}/!<>\\$%&=^~:\\|]*)\\)$";

QByteArray QFileDialog::saveState() const
{
    Q_D(const QFileDialog);
    int version = 3;
    QByteArray data;
    QDataStream stream(&data, QIODevice::WriteOnly);

    stream << qint32(QFileDialogMagic);
    stream << qint32(version);
    stream << d->qFileDialogUi->splitter->saveState();
    stream << d->qFileDialogUi->sidebar->urls();
    stream << history();
    stream << *lastVisitedDir();
    stream << d->qFileDialogUi->treeView->header()->saveState();
    stream << qint32(viewMode());
    return data;
}

bool QFileDialog::restoreState(const QByteArray &state)
{
    Q_D(QFileDialog);
    int version = 3;
    QByteArray sd = state;
    QDataStream stream(&sd, QIODevice::ReadOnly);
    if (stream.atEnd())
        return false;
    QByteArray splitterState;
    QByteArray headerData;
    QList<QUrl> bookmarks;
    QStringList history;
    QString currentDirectory;
    qint32 marker;
    qint32 v;
    qint32 viewMode;
    stream >> marker;
    stream >> v;
    if (marker != QFileDialogMagic || v != version)
        return false;

    stream >> splitterState
           >> bookmarks
           >> history
           >> currentDirectory
           >> headerData
           >> viewMode;

    if (!d->qFileDialogUi->splitter->restoreState(splitterState))
        return false;
    QList<int> list = d->qFileDialogUi->splitter->sizes();
    if (list.count() >= 2 && list.at(0) == 0 && list.at(1) == 0) {
        for (int i = 0; i < list.count(); ++i)
            list[i] = d->qFileDialogUi->splitter->widget(i)->sizeHint().width();
        d->qFileDialogUi->splitter->setSizes(list);
    }

    d->qFileDialogUi->sidebar->setUrls(bookmarks);
    while (history.count() > 5)
        history.pop_front();
    setHistory(history);
    setDirectory(lastVisitedDir()->isEmpty() ? currentDirectory : *lastVisitedDir());
    QHeaderView *headerView = d->qFileDialogUi->treeView->header();
    if (!headerView->restoreState(headerData))
        return false;

    QList<QAction*> actions = headerView->actions();
    QAbstractItemModel *abstractModel = d->model;
#ifndef QT_NO_PROXYMODEL
    if (d->proxyModel)
        abstractModel = d->proxyModel;
#endif
    int total = qMin(abstractModel->columnCount(QModelIndex()), actions.count() + 1);
    for (int i = 1; i < total; ++i)
        actions.at(i - 1)->setChecked(!headerView->isSectionHidden(i));

    setViewMode(ViewMode(viewMode));
    return true;
}

void QFileDialog::changeEvent(QEvent *e)
{
    Q_D(QFileDialog);
    if (e->type() == QEvent::LanguageChange) {
        d->retranslateWindowTitle();
        d->retranslateStrings();
    }
    QDialog::changeEvent(e);
}

QFileDialogPrivate::QFileDialogPrivate()
    :
#ifndef QT_NO_PROXYMODEL
        proxyModel(0),
#endif
        model(0),
        fileMode(QFileDialog::AnyFile),
        acceptMode(QFileDialog::AcceptOpen),
        currentHistoryLocation(-1),
        renameAction(0),
        deleteAction(0),
        showHiddenAction(0),
        useDefaultCaption(true),
        defaultFileTypes(true),
        fileNameLabelExplicitlySat(false),
        nativeDialogInUse(false),
#ifdef Q_WS_MAC
        mDelegate(0),
#ifndef QT_MAC_USE_COCOA
        mDialog(0),
        mDialogStarted(false),
        mDialogClosed(true),
#endif
#endif
        qFileDialogUi(0)
{
}

QFileDialogPrivate::~QFileDialogPrivate()
{
}

void QFileDialogPrivate::retranslateWindowTitle()
{
    Q_Q(QFileDialog);
    if (!useDefaultCaption || setWindowTitle != q->windowTitle())
        return;
    if (acceptMode == QFileDialog::AcceptOpen) {
        if (fileMode == QFileDialog::DirectoryOnly || fileMode == QFileDialog::Directory)
            q->setWindowTitle(QFileDialog::tr("Find Directory"));
        else
            q->setWindowTitle(QFileDialog::tr("Open"));
    } else
        q->setWindowTitle(QFileDialog::tr("Save As"));

    setWindowTitle = q->windowTitle();
}

void QFileDialogPrivate::setLastVisitedDirectory(const QString &dir)
{
    *lastVisitedDir() = dir;
}

void QFileDialogPrivate::retranslateStrings()
{
    Q_Q(QFileDialog);
    /* WIDGETS */
    if (defaultFileTypes)
        q->setNameFilter(QFileDialog::tr("All Files (*)"));

    QList<QAction*> actions = qFileDialogUi->treeView->header()->actions();
    QAbstractItemModel *abstractModel = model;
#ifndef QT_NO_PROXYMODEL
    if (proxyModel)
        abstractModel = proxyModel;
#endif
    int total = qMin(abstractModel->columnCount(QModelIndex()), actions.count() + 1);
    for (int i = 1; i < total; ++i) {
        actions.at(i - 1)->setText(QFileDialog::tr("Show ") + abstractModel->headerData(i, Qt::Horizontal, Qt::DisplayRole).toString());
    }

    /* MENU ACTIONS */
    renameAction->setText(QFileDialog::tr("&Rename"));
    deleteAction->setText(QFileDialog::tr("&Delete"));
    showHiddenAction->setText(QFileDialog::tr("Show &hidden files"));
    newFolderAction->setText(QFileDialog::tr("&New Folder"));
    qFileDialogUi->retranslateUi(q);

    if (!fileNameLabelExplicitlySat){
        if (fileMode == QFileDialog::DirectoryOnly || fileMode == QFileDialog::Directory) {
            q->setLabelText(QFileDialog::FileName, QFileDialog::tr("Directory:"));
        } else {
            q->setLabelText(QFileDialog::FileName, QFileDialog::tr("File &name:"));
        }
        fileNameLabelExplicitlySat = false;
    }
}

void QFileDialogPrivate::emitFilesSelected(const QStringList &files)
{
    Q_Q(QFileDialog);
    emit q->filesSelected(files);
    if (files.count() == 1)
        emit q->fileSelected(files.first());
}

bool QFileDialogPrivate::canBeNativeDialog()
{
    Q_Q(QFileDialog);
    if (nativeDialogInUse)
        return true;
    if (q->testAttribute(Qt::WA_DontShowOnScreen))
        return false;
    if (opts & QFileDialog::DontUseNativeDialog)
        return false;

    QLatin1String staticName(QFileDialog::staticMetaObject.className());
    QLatin1String dynamicName(q->metaObject()->className());
    return (staticName == dynamicName);
}

void QFileDialog::setOption(Option option, bool on)
{
    Q_D(QFileDialog);
    if (!(d->opts & option) != !on)
        setOptions(d->opts ^ option);
}

bool QFileDialog::testOption(Option option) const
{
    Q_D(const QFileDialog);
    return (d->opts & option) != 0;
}

void QFileDialog::setOptions(Options options)
{
    Q_D(QFileDialog);

    Options changed = (options ^ d->opts);
    if (!changed)
        return;

    d->opts = options;
    if (changed & DontResolveSymlinks)
        d->model->setResolveSymlinks(!(options & DontResolveSymlinks));
    if (changed & ReadOnly) {
        bool ro = (options & ReadOnly);
        d->model->setReadOnly(ro);
        d->qFileDialogUi->newFolderButton->setEnabled(!ro);
        d->renameAction->setEnabled(!ro);
        d->deleteAction->setEnabled(!ro);
    }
    if (changed & HideNameFilterDetails)
        setNameFilters(d->nameFilters);

    if (changed & ShowDirsOnly)
        setFilter((options & ShowDirsOnly) ? filter() & ~QDir::Files : filter() | QDir::Files);

    if (changed & DontUseCustomDirectoryIcons)
        iconProvider()->d_ptr->setUseCustomDirectoryIcons(!(options & DontUseCustomDirectoryIcons));
}

QFileDialog::Options QFileDialog::options() const
{
    Q_D(const QFileDialog);
    return d->opts;
}

void QFileDialog::open(QObject *receiver, const char *member)
{
    Q_D(QFileDialog);
    const char *signal = (fileMode() == ExistingFiles) ? SIGNAL(filesSelected(QStringList))
                                                       : SIGNAL(fileSelected(QString));
    connect(this, signal, receiver, member);
    d->signalToDisconnectOnClose = signal;
    d->receiverToDisconnectOnClose = receiver;
    d->memberToDisconnectOnClose = member;

    QDialog::open();
}


void QFileDialog::setVisible(bool visible)
{
    Q_D(QFileDialog);
    if (visible){
        if (testAttribute(Qt::WA_WState_ExplicitShowHide) && !testAttribute(Qt::WA_WState_Hidden))
            return;
    } else if (testAttribute(Qt::WA_WState_ExplicitShowHide) && testAttribute(Qt::WA_WState_Hidden))
        return;

    if (d->canBeNativeDialog()){
        if (d->setVisible_sys(visible)){
            d->nativeDialogInUse = true;
            // Set WA_DontShowOnScreen so that QDialog::setVisible(visible) below
            // updates the state correctly, but skips showing the non-native version:
            setAttribute(Qt::WA_DontShowOnScreen);
#ifndef QT_NO_FSCOMPLETER
            //So the completer don't try to complete and therefore to show a popup
            d->completer->setModel(0);
#endif
        } else {
            d->nativeDialogInUse = false;
            setAttribute(Qt::WA_DontShowOnScreen, false);
#ifndef QT_NO_FSCOMPLETER
            if (d->proxyModel != 0)
                d->completer->setModel(d->proxyModel);
            else
                d->completer->setModel(d->model);
#endif
        }
    }

    if (!d->nativeDialogInUse)
        d->qFileDialogUi->fileNameEdit->setFocus();

    QDialog::setVisible(visible);
}

void QFileDialogPrivate::_q_goToUrl(const QUrl &url)
{
    //The shortcut in the side bar may have a parent that is not fetched yet (e.g. an hidden file)
    //so we force the fetching
    QFileSystemModelPrivate::QFileSystemNode *node = model->d_func()->node(url.toLocalFile(), true);
    QModelIndex idx =  model->d_func()->index(node);
    _q_enterDirectory(idx);
}

void QFileDialog::setDirectory(const QString &directory)
{
    Q_D(QFileDialog);
    QString newDirectory = directory;
    QFileInfo info(directory);
    //we remove .. and . from the given path if exist
    if (!directory.isEmpty())
        newDirectory = QDir::cleanPath(directory);

    if (!directory.isEmpty() && newDirectory.isEmpty())
        return;

    d->setLastVisitedDirectory(newDirectory);

    if (d->nativeDialogInUse){
        d->setDirectory_sys(newDirectory);
        return;
    }
    if (d->rootPath() == newDirectory)
        return;
    QModelIndex root = d->model->setRootPath(newDirectory);
    d->qFileDialogUi->newFolderButton->setEnabled(d->model->flags(root) & Qt::ItemIsDropEnabled);
    if (root != d->rootIndex()) {
#ifndef QT_NO_FSCOMPLETER
    if (directory.endsWith(QLatin1Char('/')))
        d->completer->setCompletionPrefix(newDirectory);
    else
        d->completer->setCompletionPrefix(newDirectory + QLatin1Char('/'));
#endif
        d->setRootIndex(root);
    }
    d->qFileDialogUi->listView->selectionModel()->clear();
}

QDir QFileDialog::directory() const
{
    Q_D(const QFileDialog);
    return QDir(d->nativeDialogInUse ? d->directory_sys() : d->rootPath());
}

void QFileDialog::selectFile(const QString &filename)
{
    Q_D(QFileDialog);
    if (filename.isEmpty())
        return;

    if (d->nativeDialogInUse){
        d->selectFile_sys(filename);
        return;
    }

    if (!QDir::isRelativePath(filename)) {
        QFileInfo info(filename);
        QString filenamePath = info.absoluteDir().path();

        if (d->model->rootPath() != filenamePath)
            setDirectory(filenamePath);
    }

    QModelIndex index = d->model->index(filename);
    QString file;
    if (!index.isValid()) {
        // save as dialog where we want to input a default value
        QString text = filename;
        if (QFileInfo(filename).isAbsolute()) {
            QString current = d->rootPath();
            text.remove(current);
            if (text.at(0) == QDir::separator()
#ifdef Q_OS_WIN
                //On Windows both cases can happen
                || text.at(0) == QLatin1Char('/')
#endif
                )
                text = text.remove(0,1);
        }
        file = text;
    } else {
        file = index.data().toString();
    }
    d->qFileDialogUi->listView->selectionModel()->clear();
    if (!isVisible() || !d->lineEdit()->hasFocus())
        d->lineEdit()->setText(file);
}

#ifdef Q_OS_UNIX
Q_AUTOTEST_EXPORT QString qt_tildeExpansion(const QString &path, bool *expanded = 0)
{
    if (expanded != 0)
        *expanded = false;
    if (!path.startsWith(QLatin1Char('~')))
        return path;
    QString ret = path;
#if !defined(Q_OS_INTEGRITY)
    QStringList tokens = ret.split(QDir::separator());
    if (tokens.first() == QLatin1String("~")) {
        ret.replace(0, 1, QDir::homePath());
    } else {
        QString userName = tokens.first();
        userName.remove(0, 1);
#if defined(Q_OS_VXWORKS)
        const QString homePath = QDir::homePath();
#elif defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_OPENBSD)
        passwd pw;
        passwd *tmpPw;
        char buf[200];
        const int bufSize = sizeof(buf);
        int err = 0;
#if defined(Q_OS_SOLARIS) && defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE - 0 < 199506L)
        tmpPw = getpwnam_r(userName.toLocal8Bit().constData(), &pw, buf, bufSize);
#else
        err = getpwnam_r(userName.toLocal8Bit().constData(), &pw, buf, bufSize, &tmpPw);
#endif
        if (err || !tmpPw)
            return ret;
        const QString homePath = QString::fromLocal8Bit(pw.pw_dir);
#else
        passwd *pw = getpwnam(userName.toLocal8Bit().constData());
        if (!pw)
            return ret;
        const QString homePath = QString::fromLocal8Bit(pw->pw_dir);
#endif
        ret.replace(0, tokens.first().length(), homePath);
    }
    if (expanded != 0)
        *expanded = true;
#endif
    return ret;
}
#endif

QStringList QFileDialogPrivate::typedFiles() const
{
#ifdef Q_OS_UNIX
    Q_Q(const QFileDialog);
#endif
    QStringList files;
    QString editText = lineEdit()->text();
    if (!editText.contains(QLatin1Char('"'))) {
#ifdef Q_OS_UNIX
        const QString prefix = q->directory().absolutePath() + QDir::separator();
        if (QFile::exists(prefix + editText))
            files << editText;
        else
            files << qt_tildeExpansion(editText);
#else
        files << editText;
#endif
    } else {
        // " is used to separate files like so: "file1" "file2" "file3" ...
        // ### need escape character for filenames with quotes (")
        QStringList tokens = editText.split(QLatin1Char('\"'));
        for (int i=0; i<tokens.size(); ++i) {
            if ((i % 2) == 0)
                continue; // Every even token is a separator
#ifdef Q_OS_UNIX
            const QString token = tokens.at(i);
            const QString prefix = q->directory().absolutePath() + QDir::separator();
            if (QFile::exists(prefix + token))
                files << token;
            else
                files << qt_tildeExpansion(token);
#else
            files << toInternal(tokens.at(i));
#endif
        }
    }
    return addDefaultSuffixToFiles(files);
}

QStringList QFileDialogPrivate::addDefaultSuffixToFiles(const QStringList filesToFix) const
{
    QStringList files;
    for (int i=0; i<filesToFix.size(); ++i) {
        QString name = toInternal(filesToFix.at(i));
        QFileInfo info(name);
        // if the filename has no suffix, add the default suffix
        if (!defaultSuffix.isEmpty() && !info.isDir() && name.lastIndexOf(QLatin1Char('.')) == -1)
            name += QLatin1Char('.') + defaultSuffix;
        if (info.isAbsolute()) {
            files.append(name);
        } else {
            // at this point the path should only have Qt path separators.
            // This check is needed since we might be at the root directory
            // and on Windows it already ends with slash.
            QString path = rootPath();
            if (!path.endsWith(QLatin1Char('/')))
                path += QLatin1Char('/');
            path += name;
            files.append(path);
        }
    }
    return files;
}


QStringList QFileDialog::selectedFiles() const
{
    Q_D(const QFileDialog);
    if (d->nativeDialogInUse)
        return d->addDefaultSuffixToFiles(d->selectedFiles_sys());

    QModelIndexList indexes = d->qFileDialogUi->listView->selectionModel()->selectedRows();
    QStringList files;
    for (int i = 0; i < indexes.count(); ++i)
        files.append(indexes.at(i).data(QFileSystemModel::FilePathRole).toString());

    if (files.isEmpty() && !d->lineEdit()->text().isEmpty())
        files = d->typedFiles();

    if (files.isEmpty() && !(d->fileMode == ExistingFile || d->fileMode == ExistingFiles))
        files.append(d->rootIndex().data(QFileSystemModel::FilePathRole).toString());
    return files;
}

/*
    Makes a list of filters from ;;-separated text.
    Used by the mac and windows implementations
*/
QStringList qt_make_filter_list(const QString &filter)
{
    QString f(filter);

    if (f.isEmpty())
        return QStringList();

    QString sep(QLatin1String(";;"));
    int i = f.indexOf(sep, 0);
    if (i == -1) {
        if (f.indexOf(QLatin1Char('\n'), 0) != -1) {
            sep = QLatin1Char('\n');
            i = f.indexOf(sep, 0);
        }
    }

    return f.split(sep);
}

void QFileDialog::setNameFilter(const QString &filter)
{
    setNameFilters(qt_make_filter_list(filter));
}

void QFileDialog::setFilter(const QString &filter)
{
    setNameFilter(filter);
}

void QFileDialog::setNameFilterDetailsVisible(bool enabled)
{
    setOption(HideNameFilterDetails, !enabled);
}

bool QFileDialog::isNameFilterDetailsVisible() const
{
    return !testOption(HideNameFilterDetails);
}


/*
    Strip the filters by removing the details, e.g. (*.*).
*/
QStringList qt_strip_filters(const QStringList &filters)
{
    QStringList strippedFilters;
    QRegExp r(QString::fromLatin1(qt_file_dialog_filter_reg_exp));
    for (int i = 0; i < filters.count(); ++i) {
        QString filterName;
        int index = r.indexIn(filters[i]);
        if (index >= 0)
            filterName = r.cap(1);
        strippedFilters.append(filterName.simplified());
    }
    return strippedFilters;
}


void QFileDialog::setNameFilters(const QStringList &filters)
{
    Q_D(QFileDialog);
    d->defaultFileTypes = (filters == QStringList(QFileDialog::tr("All Files (*)")));
    QStringList cleanedFilters;
    for (int i = 0; i < filters.count(); ++i) {
        cleanedFilters << filters[i].simplified();
    }
    d->nameFilters = cleanedFilters;

    if (d->nativeDialogInUse){
        d->setNameFilters_sys(cleanedFilters);
        return;
    }

    d->qFileDialogUi->fileTypeCombo->clear();
    if (cleanedFilters.isEmpty())
        return;

    if (testOption(HideNameFilterDetails))
        d->qFileDialogUi->fileTypeCombo->addItems(qt_strip_filters(cleanedFilters));
    else
        d->qFileDialogUi->fileTypeCombo->addItems(cleanedFilters);

    d->_q_useNameFilter(0);
}

void QFileDialog::setFilters(const QStringList &filters)
{
    setNameFilters(filters);
}

QStringList QFileDialog::nameFilters() const
{
    return d_func()->nameFilters;
}

QStringList QFileDialog::filters() const
{
    return nameFilters();
}

void QFileDialog::selectNameFilter(const QString &filter)
{
    Q_D(QFileDialog);
    if (d->nativeDialogInUse) {
        d->selectNameFilter_sys(filter);
        return;
    }
    int i = -1;
    if (testOption(HideNameFilterDetails)) {
        const QStringList filters = qt_strip_filters(qt_make_filter_list(filter));
        if (!filters.isEmpty())
            i = d->qFileDialogUi->fileTypeCombo->findText(filters.first());
    } else {
        i = d->qFileDialogUi->fileTypeCombo->findText(filter);
    }
    if (i >= 0) {
        d->qFileDialogUi->fileTypeCombo->setCurrentIndex(i);
        d->_q_useNameFilter(d->qFileDialogUi->fileTypeCombo->currentIndex());
    }
}

void QFileDialog::selectFilter(const QString &filter)
{
    selectNameFilter(filter);
}

QString QFileDialog::selectedNameFilter() const
{
    Q_D(const QFileDialog);
    if (d->nativeDialogInUse)
        return d->selectedNameFilter_sys();

    return d->qFileDialogUi->fileTypeCombo->currentText();
}

QString QFileDialog::selectedFilter() const
{
    return selectedNameFilter();
}

QDir::Filters QFileDialog::filter() const
{
    Q_D(const QFileDialog);
    return d->model->filter();
}

void QFileDialog::setFilter(QDir::Filters filters)
{
    Q_D(QFileDialog);
    d->model->setFilter(filters);
    if (d->nativeDialogInUse){
        d->setFilter_sys();
        return;
    }

    d->showHiddenAction->setChecked((filters & QDir::Hidden));
}

void QFileDialog::setViewMode(QFileDialog::ViewMode mode)
{
    Q_D(QFileDialog);
    if (mode == Detail)
        d->_q_showDetailsView();
    else
        d->_q_showListView();
}

QFileDialog::ViewMode QFileDialog::viewMode() const
{
    Q_D(const QFileDialog);
    return (d->qFileDialogUi->stackedWidget->currentWidget() == d->qFileDialogUi->listView->parent() ? QFileDialog::List : QFileDialog::Detail);
}

void QFileDialog::setFileMode(QFileDialog::FileMode mode)
{
    Q_D(QFileDialog);
    d->fileMode = mode;
    d->retranslateWindowTitle();

    // keep ShowDirsOnly option in sync with fileMode (BTW, DirectoryOnly is obsolete)
    setOption(ShowDirsOnly, mode == DirectoryOnly);

    // set selection mode and behavior
    QAbstractItemView::SelectionMode selectionMode;
    if (mode == QFileDialog::ExistingFiles)
        selectionMode = QAbstractItemView::ExtendedSelection;
    else
        selectionMode = QAbstractItemView::SingleSelection;
    d->qFileDialogUi->listView->setSelectionMode(selectionMode);
    d->qFileDialogUi->treeView->setSelectionMode(selectionMode);
    // set filter
    d->model->setFilter(d->filterForMode(filter()));
    // setup file type for directory
    QString buttonText = (d->acceptMode == AcceptOpen ? tr("&Open") : tr("&Save"));
    if (mode == DirectoryOnly || mode == Directory) {
        d->qFileDialogUi->fileTypeCombo->clear();
        d->qFileDialogUi->fileTypeCombo->addItem(tr("Directories"));
        d->qFileDialogUi->fileTypeCombo->setEnabled(false);

        if (!d->fileNameLabelExplicitlySat){
            setLabelText(FileName, tr("Directory:"));
            d->fileNameLabelExplicitlySat = false;
        }
        buttonText = tr("&Choose");
    } else {
        if (!d->fileNameLabelExplicitlySat){
            setLabelText(FileName, tr("File &name:"));
            d->fileNameLabelExplicitlySat = false;
        }
    }
    setLabelText(Accept, buttonText);
    if (d->nativeDialogInUse){
        d->setFilter_sys();
        return;
    }

    d->qFileDialogUi->fileTypeCombo->setEnabled(!testOption(ShowDirsOnly));
    d->_q_updateOkButton();
}

QFileDialog::FileMode QFileDialog::fileMode() const
{
    Q_D(const QFileDialog);
    return d->fileMode;
}

void QFileDialog::setAcceptMode(QFileDialog::AcceptMode mode)
{
    Q_D(QFileDialog);
    d->acceptMode = mode;
    bool directoryMode = (d->fileMode == Directory || d->fileMode == DirectoryOnly);
    QDialogButtonBox::StandardButton button = (mode == AcceptOpen ? QDialogButtonBox::Open : QDialogButtonBox::Save);
    d->qFileDialogUi->buttonBox->setStandardButtons(button | QDialogButtonBox::Cancel);
    d->qFileDialogUi->buttonBox->button(button)->setEnabled(false);
    d->_q_updateOkButton();
    if (mode == AcceptOpen && directoryMode)
        setLabelText(Accept, tr("&Choose"));
    else
        setLabelText(Accept, (mode == AcceptOpen ? tr("&Open") : tr("&Save")));
    if (mode == AcceptSave) {
        d->qFileDialogUi->lookInCombo->setEditable(false);
    }
    d->retranslateWindowTitle();
#if defined(Q_WS_MAC)
    d->deleteNativeDialog_sys();
    setAttribute(Qt::WA_DontShowOnScreen, false);
#endif
}

/*
    Returns the file system model index that is the root index in the
    views
*/
QModelIndex QFileDialogPrivate::rootIndex() const {
    return mapToSource(qFileDialogUi->listView->rootIndex());
}

QAbstractItemView *QFileDialogPrivate::currentView() const {
    if (!qFileDialogUi->stackedWidget)
        return 0;
    if (qFileDialogUi->stackedWidget->currentWidget() == qFileDialogUi->listView->parent())
        return qFileDialogUi->listView;
    return qFileDialogUi->treeView;
}

QLineEdit *QFileDialogPrivate::lineEdit() const {
    return (QLineEdit*)qFileDialogUi->fileNameEdit;
}

/*
    Sets the view root index to be the file system model index
*/
void QFileDialogPrivate::setRootIndex(const QModelIndex &index) const {
    Q_ASSERT(index.isValid() ? index.model() == model : true);
    QModelIndex idx = mapFromSource(index);
    qFileDialogUi->treeView->setRootIndex(idx);
    qFileDialogUi->listView->setRootIndex(idx);
}
/*
    Select a file system model index
    returns the index that was selected (or not depending upon sortfilterproxymodel)
*/
QModelIndex QFileDialogPrivate::select(const QModelIndex &index) const {
    Q_ASSERT(index.isValid() ? index.model() == model : true);

    QModelIndex idx = mapFromSource(index);
    if (idx.isValid() && !qFileDialogUi->listView->selectionModel()->isSelected(idx))
        qFileDialogUi->listView->selectionModel()->select(idx,
            QItemSelectionModel::Select | QItemSelectionModel::Rows);
    return idx;
}

QFileDialog::AcceptMode QFileDialog::acceptMode() const
{
    Q_D(const QFileDialog);
    return d->acceptMode;
}

void QFileDialog::setReadOnly(bool enabled)
{
    setOption(ReadOnly, enabled);
}

bool QFileDialog::isReadOnly() const
{
    return testOption(ReadOnly);
}

void QFileDialog::setResolveSymlinks(bool enabled)
{
    setOption(DontResolveSymlinks, !enabled);
}

bool QFileDialog::resolveSymlinks() const
{
    return !testOption(DontResolveSymlinks);
}

void QFileDialog::setConfirmOverwrite(bool enabled)
{
    setOption(DontConfirmOverwrite, !enabled);
}

bool QFileDialog::confirmOverwrite() const
{
    return !testOption(DontConfirmOverwrite);
}

void QFileDialog::setDefaultSuffix(const QString &suffix)
{
    Q_D(QFileDialog);
    d->defaultSuffix = suffix;
}

QString QFileDialog::defaultSuffix() const
{
    Q_D(const QFileDialog);
    return d->defaultSuffix;
}

void QFileDialog::setHistory(const QStringList &paths)
{
    Q_D(QFileDialog);
    d->qFileDialogUi->lookInCombo->setHistory(paths);
}

void QFileDialogComboBox::setHistory(const QStringList &paths)
{
    m_history = paths;
    // Only populate the first item, showPopup will populate the rest if needed
    QList<QUrl> list;
    QModelIndex idx = d_ptr->model->index(d_ptr->rootPath());
    //On windows the popup display the "C:\", convert to nativeSeparators
    QUrl url = QUrl::fromLocalFile(QDir::toNativeSeparators(idx.data(QFileSystemModel::FilePathRole).toString()));
    if (url.isValid())
        list.append(url);
    urlModel->setUrls(list);
}

QStringList QFileDialog::history() const
{
    Q_D(const QFileDialog);
    QStringList currentHistory = d->qFileDialogUi->lookInCombo->history();
    //On windows the popup display the "C:\", convert to nativeSeparators
    QString newHistory = QDir::toNativeSeparators(d->rootIndex().data(QFileSystemModel::FilePathRole).toString());
    if (!currentHistory.contains(newHistory))
        currentHistory << newHistory;
    return currentHistory;
}

void QFileDialog::setItemDelegate(QAbstractItemDelegate *delegate)
{
    Q_D(QFileDialog);
    d->qFileDialogUi->listView->setItemDelegate(delegate);
    d->qFileDialogUi->treeView->setItemDelegate(delegate);
}

QAbstractItemDelegate *QFileDialog::itemDelegate() const
{
    Q_D(const QFileDialog);
    return d->qFileDialogUi->listView->itemDelegate();
}

void QFileDialog::setIconProvider(QFileIconProvider *provider)
{
    Q_D(QFileDialog);
    d->model->setIconProvider(provider);
    //It forces the refresh of all entries in the side bar, then we can get new icons
    d->qFileDialogUi->sidebar->setUrls(d->qFileDialogUi->sidebar->urls());
}

QFileIconProvider *QFileDialog::iconProvider() const
{
    Q_D(const QFileDialog);
    return d->model->iconProvider();
}

void QFileDialog::setLabelText(DialogLabel label, const QString &text)
{
    Q_D(QFileDialog);
    QPushButton *button;
    switch (label) {
    case LookIn:
        d->qFileDialogUi->lookInLabel->setText(text);
        break;
    case FileName:
        d->qFileDialogUi->fileNameLabel->setText(text);
        d->fileNameLabelExplicitlySat = true;
        break;
    case FileType:
        d->qFileDialogUi->fileTypeLabel->setText(text);
        break;
    case Accept:
        d->acceptLabel = text;
        if (acceptMode() == AcceptOpen)
            button = d->qFileDialogUi->buttonBox->button(QDialogButtonBox::Open);
        else
            button = d->qFileDialogUi->buttonBox->button(QDialogButtonBox::Save);
        if (button)
            button->setText(text);
        break;
    case Reject:
        button = d->qFileDialogUi->buttonBox->button(QDialogButtonBox::Cancel);
        if (button)
            button->setText(text);
        break;
    }
}

QString QFileDialog::labelText(DialogLabel label) const
{
    QPushButton *button;
    Q_D(const QFileDialog);
    switch (label) {
    case LookIn:
        return d->qFileDialogUi->lookInLabel->text();
    case FileName:
        return d->qFileDialogUi->fileNameLabel->text();
    case FileType:
        return d->qFileDialogUi->fileTypeLabel->text();
    case Accept:
        if (acceptMode() == AcceptOpen)
            button = d->qFileDialogUi->buttonBox->button(QDialogButtonBox::Open);
        else
            button = d->qFileDialogUi->buttonBox->button(QDialogButtonBox::Save);
        if (button)
            return button->text();
    case Reject:
        button = d->qFileDialogUi->buttonBox->button(QDialogButtonBox::Cancel);
        if (button)
            return button->text();
    }
    return QString();
}

/*
    For the native file dialogs
*/

#if defined(Q_WS_WIN)
extern QString qt_win_get_open_file_name(const QFileDialogArgs &args,
                                         QString *initialDirectory,
                                         QString *selectedFilter);

extern QString qt_win_get_save_file_name(const QFileDialogArgs &args,
                                         QString *initialDirectory,
                                         QString *selectedFilter);

extern QStringList qt_win_get_open_file_names(const QFileDialogArgs &args,
                                              QString *initialDirectory,
                                              QString *selectedFilter);

extern QString qt_win_get_existing_directory(const QFileDialogArgs &args);
#endif

/*
    For Symbian file dialogs
*/
#if defined(Q_WS_S60)
extern QString qtSymbianGetOpenFileName(const QString &caption,
                                        const QString &dir,
                                        const QString &filter);

extern QStringList qtSymbianGetOpenFileNames(const QString &caption,
                                             const QString &dir,
                                             const QString &filter);

extern QString qtSymbianGetSaveFileName(const QString &caption,
                                        const QString &dir);

extern QString qtSymbianGetExistingDirectory(const QString &caption,
                                             const QString &dir);
#endif

QString QFileDialog::getOpenFileName(QWidget *parent,
                               const QString &caption,
                               const QString &dir,
                               const QString &filter,
                               QString *selectedFilter,
                               Options options)
{
    if (qt_filedialog_open_filename_hook && !(options & DontUseNativeDialog))
        return qt_filedialog_open_filename_hook(parent, caption, dir, filter, selectedFilter, options);
#if defined(Q_WS_S60)
    if (QSysInfo::s60Version() > QSysInfo::SV_S60_5_0 && !(options & DontUseNativeDialog))
        return qtSymbianGetOpenFileName(caption, dir, filter);
#endif
    QFileDialogArgs args;
    args.parent = parent;
    args.caption = caption;
    args.directory = QFileDialogPrivate::workingDirectory(dir);
    args.selection = QFileDialogPrivate::initialSelection(dir);
    args.filter = filter;
    args.mode = ExistingFile;
    args.options = options;
#if defined(Q_WS_WIN)
    if (qt_use_native_dialogs && !(args.options & DontUseNativeDialog)) {
        return qt_win_get_open_file_name(args, &(args.directory), selectedFilter);
    }
#endif

    // create a qt dialog
    QFileDialog dialog(args);
    if (selectedFilter && !selectedFilter->isEmpty())
        dialog.selectNameFilter(*selectedFilter);
    if (dialog.exec() == QDialog::Accepted) {
        if (selectedFilter)
            *selectedFilter = dialog.selectedFilter();
        return dialog.selectedFiles().value(0);
    }
    return QString();
}

QStringList QFileDialog::getOpenFileNames(QWidget *parent,
                                          const QString &caption,
                                          const QString &dir,
                                          const QString &filter,
                                          QString *selectedFilter,
                                          Options options)
{
    if (qt_filedialog_open_filenames_hook && !(options & DontUseNativeDialog))
        return qt_filedialog_open_filenames_hook(parent, caption, dir, filter, selectedFilter, options);
#if defined(Q_WS_S60)
    if (QSysInfo::s60Version() > QSysInfo::SV_S60_5_0 && !(options & DontUseNativeDialog))
        return qtSymbianGetOpenFileNames(caption, dir, filter);
#endif
    QFileDialogArgs args;
    args.parent = parent;
    args.caption = caption;
    args.directory = QFileDialogPrivate::workingDirectory(dir);
    args.selection = QFileDialogPrivate::initialSelection(dir);
    args.filter = filter;
    args.mode = ExistingFiles;
    args.options = options;

#if defined(Q_WS_WIN)
    if (qt_use_native_dialogs && !(args.options & DontUseNativeDialog)) {
        return qt_win_get_open_file_names(args, &(args.directory), selectedFilter);
    }
#endif

    // create a qt dialog
    QFileDialog dialog(args);
    if (selectedFilter && !selectedFilter->isEmpty())
        dialog.selectNameFilter(*selectedFilter);
    if (dialog.exec() == QDialog::Accepted) {
        if (selectedFilter)
            *selectedFilter = dialog.selectedFilter();
        return dialog.selectedFiles();
    }
    return QStringList();
}

QString QFileDialog::getSaveFileName(QWidget *parent,
                                     const QString &caption,
                                     const QString &dir,
                                     const QString &filter,
                                     QString *selectedFilter,
                                     Options options)
{
    if (qt_filedialog_save_filename_hook && !(options & DontUseNativeDialog))
        return qt_filedialog_save_filename_hook(parent, caption, dir, filter, selectedFilter, options);
#if defined(Q_WS_S60)
    if (QSysInfo::s60Version() > QSysInfo::SV_S60_5_0 && !(options & DontUseNativeDialog))
        return qtSymbianGetSaveFileName(caption, dir);
#endif
    QFileDialogArgs args;
    args.parent = parent;
    args.caption = caption;
    args.directory = QFileDialogPrivate::workingDirectory(dir);
    args.selection = QFileDialogPrivate::initialSelection(dir);
    args.filter = filter;
    args.mode = AnyFile;
    args.options = options;

#if defined(Q_WS_WIN)
    if (qt_use_native_dialogs && !(args.options & DontUseNativeDialog)) {
        return qt_win_get_save_file_name(args, &(args.directory), selectedFilter);
    }
#endif

    // create a qt dialog
    QFileDialog dialog(args);
    dialog.setAcceptMode(AcceptSave);
    if (selectedFilter && !selectedFilter->isEmpty())
        dialog.selectNameFilter(*selectedFilter);
    if (dialog.exec() == QDialog::Accepted) {
        if (selectedFilter)
            *selectedFilter = dialog.selectedFilter();
        return dialog.selectedFiles().value(0);
    }

    return QString();
}

QString QFileDialog::getExistingDirectory(QWidget *parent,
                                          const QString &caption,
                                          const QString &dir,
                                          Options options)
{
    if (qt_filedialog_existing_directory_hook && !(options & DontUseNativeDialog))
        return qt_filedialog_existing_directory_hook(parent, caption, dir, options);
#if defined(Q_WS_S60)
    if (QSysInfo::s60Version() > QSysInfo::SV_S60_5_0 && !(options & DontUseNativeDialog))
        return qtSymbianGetExistingDirectory(caption, dir);
#endif
    QFileDialogArgs args;
    args.parent = parent;
    args.caption = caption;
    args.directory = QFileDialogPrivate::workingDirectory(dir);
    args.mode = (options & ShowDirsOnly ? DirectoryOnly : Directory);
    args.options = options;

#if defined(Q_WS_WIN)
    if (qt_use_native_dialogs && !(args.options & DontUseNativeDialog) && (options & ShowDirsOnly)
#if defined(Q_WS_WINCE)
        && qt_priv_ptr_valid
#endif
        ) {
        return qt_win_get_existing_directory(args);
    }
#endif

    // create a qt dialog
    QFileDialog dialog(args);
    if (dialog.exec() == QDialog::Accepted) {
        return dialog.selectedFiles().value(0);
    }
    return QString();
}

inline static QString _qt_get_directory(const QString &path)
{
    QFileInfo info = QFileInfo(QDir::current(), path);
    if (info.exists() && info.isDir())
        return QDir::cleanPath(info.absoluteFilePath());
    info.setFile(info.absolutePath());
    if (info.exists() && info.isDir())
        return info.absoluteFilePath();
    return QString();
}
/*
    Get the initial directory path

    \sa initialSelection()
 */
QString QFileDialogPrivate::workingDirectory(const QString &path)
{
    if (!path.isEmpty()) {
        QString directory = _qt_get_directory(path);
        if (!directory.isEmpty())
            return directory;
    }
    QString directory = _qt_get_directory(*lastVisitedDir());
    if (!directory.isEmpty())
        return directory;
    return QDir::currentPath();
}

/*
    Get the initial selection given a path.  The initial directory
    can contain both the initial directory and initial selection
    /home/user/foo.txt

    \sa workingDirectory()
 */
QString QFileDialogPrivate::initialSelection(const QString &path)
{
    if (!path.isEmpty()) {
        QFileInfo info(path);
        if (!info.isDir())
            return info.fileName();
    }
    return QString();
}

void QFileDialog::done(int result)
{
    Q_D(QFileDialog);

    QDialog::done(result);

    if (d->receiverToDisconnectOnClose) {
        disconnect(this, d->signalToDisconnectOnClose,
                   d->receiverToDisconnectOnClose, d->memberToDisconnectOnClose);
        d->receiverToDisconnectOnClose = 0;
    }
    d->memberToDisconnectOnClose.clear();
    d->signalToDisconnectOnClose.clear();
}

void QFileDialog::accept()
{
    Q_D(QFileDialog);
    QStringList files = selectedFiles();
    if (files.isEmpty())
        return;
    if (d->nativeDialogInUse){
        d->emitFilesSelected(files);
        QDialog::accept();
        return;
    }

    QString lineEditText = d->lineEdit()->text();
    // "hidden feature" type .. and then enter, and it will move up a dir
    // special case for ".."
    if (lineEditText == QLatin1String("..")) {
        d->_q_navigateToParent();
        bool block = d->qFileDialogUi->fileNameEdit->blockSignals(true);
        d->lineEdit()->selectAll();
        d->qFileDialogUi->fileNameEdit->blockSignals(block);
        return;
    }

    switch (d->fileMode) {
    case DirectoryOnly:
    case Directory: {
        QString fn = files.first();
        QFileInfo info(fn);
        if (!info.exists())
            info = QFileInfo(d->getEnvironmentVariable(fn));
        if (!info.exists()) {
#ifndef QT_NO_MESSAGEBOX
            QString message = tr("%1\nDirectory not found.\nPlease verify the "
                                          "correct directory name was given.");
            QMessageBox::warning(this, windowTitle(), message.arg(info.fileName()));
#endif // QT_NO_MESSAGEBOX
            return;
        }
        if (info.isDir()) {
            d->emitFilesSelected(files);
            QDialog::accept();
        }
        return;
    }

    case AnyFile: {
        QString fn = files.first();
        QFileInfo info(fn);
        if (info.isDir()) {
            setDirectory(info.absoluteFilePath());
            return;
        }

        if (!info.exists()) {
            int maxNameLength = d->maxNameLength(info.path());
            if (maxNameLength >= 0 && info.fileName().length() > maxNameLength)
                return;
        }

        // check if we have to ask for permission to overwrite the file
        if (!info.exists() || !confirmOverwrite() || acceptMode() == AcceptOpen) {
            d->emitFilesSelected(QStringList(fn));
            QDialog::accept();
#ifndef QT_NO_MESSAGEBOX
        } else {
            if (QMessageBox::warning(this, windowTitle(),
                                     tr("%1 already exists.\nDo you want to replace it?")
                                     .arg(info.fileName()),
                                     QMessageBox::Yes | QMessageBox::No, QMessageBox::No)
                    == QMessageBox::Yes) {
                d->emitFilesSelected(QStringList(fn));
                QDialog::accept();
            }
#endif
        }
        return;
    }

    case ExistingFile:
    case ExistingFiles:
        for (int i = 0; i < files.count(); ++i) {
            QFileInfo info(files.at(i));
            if (!info.exists())
                info = QFileInfo(d->getEnvironmentVariable(files.at(i)));
            if (!info.exists()) {
#ifndef QT_NO_MESSAGEBOX
                QString message = tr("%1\nFile not found.\nPlease verify the "
                                     "correct file name was given.");
                QMessageBox::warning(this, windowTitle(), message.arg(info.fileName()));
#endif // QT_NO_MESSAGEBOX
                return;
            }
            if (info.isDir()) {
                setDirectory(info.absoluteFilePath());
                d->lineEdit()->clear();
                return;
            }
        }
        d->emitFilesSelected(files);
        QDialog::accept();
        return;
    }
}

void QFileDialogPrivate::init(const QString &directory, const QString &nameFilter,
                              const QString &caption)
{
    Q_Q(QFileDialog);
    if (!caption.isEmpty()) {
        useDefaultCaption = false;
        setWindowTitle = caption;
        q->setWindowTitle(caption);
    }

    createWidgets();
    createMenuActions();
    retranslateStrings();
    q->setFileMode(fileMode);

#ifndef QT_NO_SETTINGS
    QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
    settings.beginGroup(QLatin1String("Qt"));
    if (!directory.isEmpty())
        setLastVisitedDirectory(workingDirectory(directory));
    q->restoreState(settings.value(QLatin1String("filedialog")).toByteArray());
#endif

#if defined(Q_EMBEDDED_SMALLSCREEN)
    qFileDialogUi->lookInLabel->setVisible(false);
    qFileDialogUi->fileNameLabel->setVisible(false);
    qFileDialogUi->fileTypeLabel->setVisible(false);
    qFileDialogUi->sidebar->hide();
#endif
    // Default case
    if (!nameFilter.isEmpty())
        q->setNameFilter(nameFilter);
    q->setAcceptMode(QFileDialog::AcceptOpen);
    q->setDirectory(workingDirectory(directory));
    q->selectFile(initialSelection(directory));

    _q_updateOkButton();
    q->resize(q->sizeHint());
}

void QFileDialogPrivate::createWidgets()
{
    Q_Q(QFileDialog);
    model = new QFileSystemModel(q);
    model->setObjectName(QLatin1String("qt_filesystem_model"));
#ifdef Q_WS_MAC
    model->setNameFilterDisables(true);
#else
    model->setNameFilterDisables(false);
#endif
    model->d_func()->disableRecursiveSort = true;
    QFileDialog::connect(model, SIGNAL(fileRenamed(QString,QString,QString)), q, SLOT(_q_fileRenamed(QString,QString,QString)));
    QFileDialog::connect(model, SIGNAL(rootPathChanged(QString)),
            q, SLOT(_q_pathChanged(QString)));
    QFileDialog::connect(model, SIGNAL(rowsInserted(QModelIndex,int,int)),
            q, SLOT(_q_rowsInserted(QModelIndex)));
    model->setReadOnly(false);

    qFileDialogUi.reset(new Ui_QFileDialog());
    qFileDialogUi->setupUi(q);

    QList<QUrl> initialBookmarks;
    initialBookmarks << QUrl::fromLocalFile(QLatin1String(""))
                     << QUrl::fromLocalFile(QDir::homePath());
    qFileDialogUi->sidebar->init(model, initialBookmarks);
    QFileDialog::connect(qFileDialogUi->sidebar, SIGNAL(goToUrl(QUrl)),
                         q, SLOT(_q_goToUrl(QUrl)));

    QObject::connect(qFileDialogUi->buttonBox, SIGNAL(accepted()), q, SLOT(accept()));
    QObject::connect(qFileDialogUi->buttonBox, SIGNAL(rejected()), q, SLOT(reject()));


    qFileDialogUi->lookInCombo->init(this);
    QObject::connect(qFileDialogUi->lookInCombo, SIGNAL(activated(QString)), q, SLOT(_q_goToDirectory(QString)));

    qFileDialogUi->lookInCombo->setInsertPolicy(QComboBox::NoInsert);
    qFileDialogUi->lookInCombo->setDuplicatesEnabled(false);

    // filename
    qFileDialogUi->fileNameEdit->init(this);
#ifndef QT_NO_SHORTCUT
    qFileDialogUi->fileNameLabel->setBuddy(qFileDialogUi->fileNameEdit);
#endif
#ifndef QT_NO_FSCOMPLETER
    completer = new QFSCompleter(model, q);
    qFileDialogUi->fileNameEdit->setCompleter(completer);
#endif // QT_NO_FSCOMPLETER
    QObject::connect(qFileDialogUi->fileNameEdit, SIGNAL(textChanged(QString)),
            q, SLOT(_q_autoCompleteFileName(QString)));
    QObject::connect(qFileDialogUi->fileNameEdit, SIGNAL(textChanged(QString)),
                     q, SLOT(_q_updateOkButton()));

    QObject::connect(qFileDialogUi->fileNameEdit, SIGNAL(returnPressed()), q, SLOT(accept()));

    // filetype
    qFileDialogUi->fileTypeCombo->setDuplicatesEnabled(false);
    qFileDialogUi->fileTypeCombo->setSizeAdjustPolicy(QComboBox::AdjustToMinimumContentsLength);
    qFileDialogUi->fileTypeCombo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    QObject::connect(qFileDialogUi->fileTypeCombo, SIGNAL(activated(int)),
                     q, SLOT(_q_useNameFilter(int)));
    QObject::connect(qFileDialogUi->fileTypeCombo, SIGNAL(activated(QString)),
                     q, SIGNAL(filterSelected(QString)));

    qFileDialogUi->listView->init(this);
    qFileDialogUi->listView->setModel(model);
    QObject::connect(qFileDialogUi->listView, SIGNAL(activated(QModelIndex)),
                     q, SLOT(_q_enterDirectory(QModelIndex)));
    QObject::connect(qFileDialogUi->listView, SIGNAL(customContextMenuRequested(QPoint)),
                    q, SLOT(_q_showContextMenu(QPoint)));
#ifndef QT_NO_SHORTCUT
    QShortcut *shortcut = new QShortcut(qFileDialogUi->listView);
    shortcut->setKey(QKeySequence(QLatin1String("Delete")));
    QObject::connect(shortcut, SIGNAL(activated()), q, SLOT(_q_deleteCurrent()));
#endif

    qFileDialogUi->treeView->init(this);
    qFileDialogUi->treeView->setModel(model);
    QHeaderView *treeHeader = qFileDialogUi->treeView->header();
    QFontMetrics fm(q->font());
    treeHeader->resizeSection(0, fm.width(QLatin1String("wwwwwwwwwwwwwwwwwwwwwwwwww")));
    treeHeader->resizeSection(1, fm.width(QLatin1String("128.88 GB")));
    treeHeader->resizeSection(2, fm.width(QLatin1String("mp3Folder")));
    treeHeader->resizeSection(3, fm.width(QLatin1String("10/29/81 02:02PM")));
    treeHeader->setContextMenuPolicy(Qt::ActionsContextMenu);

    QActionGroup *showActionGroup = new QActionGroup(q);
    showActionGroup->setExclusive(false);
    QObject::connect(showActionGroup, SIGNAL(triggered(QAction*)),
                     q, SLOT(_q_showHeader(QAction*)));;

    QAbstractItemModel *abstractModel = model;
#ifndef QT_NO_PROXYMODEL
    if (proxyModel)
        abstractModel = proxyModel;
#endif
    for (int i = 1; i < abstractModel->columnCount(QModelIndex()); ++i) {
        QAction *showHeader = new QAction(showActionGroup);
        showHeader->setCheckable(true);
        showHeader->setChecked(true);
        treeHeader->addAction(showHeader);
    }

    QScopedPointer<QItemSelectionModel> selModel(qFileDialogUi->treeView->selectionModel());
    qFileDialogUi->treeView->setSelectionModel(qFileDialogUi->listView->selectionModel());

    QObject::connect(qFileDialogUi->treeView, SIGNAL(activated(QModelIndex)),
                     q, SLOT(_q_enterDirectory(QModelIndex)));
    QObject::connect(qFileDialogUi->treeView, SIGNAL(customContextMenuRequested(QPoint)),
                     q, SLOT(_q_showContextMenu(QPoint)));
#ifndef QT_NO_SHORTCUT
    shortcut = new QShortcut(qFileDialogUi->treeView);
    shortcut->setKey(QKeySequence(QLatin1String("Delete")));
    QObject::connect(shortcut, SIGNAL(activated()), q, SLOT(_q_deleteCurrent()));
#endif

    // Selections
    QItemSelectionModel *selections = qFileDialogUi->listView->selectionModel();
    QObject::connect(selections, SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
                     q, SLOT(_q_selectionChanged()));
    QObject::connect(selections, SIGNAL(currentChanged(QModelIndex,QModelIndex)),
                     q, SLOT(_q_currentChanged(QModelIndex)));
    qFileDialogUi->splitter->setStretchFactor(qFileDialogUi->splitter->indexOf(qFileDialogUi->splitter->widget(1)), QSizePolicy::Expanding);

    createToolButtons();
}

void QFileDialogPrivate::_q_showHeader(QAction *action)
{
    Q_Q(QFileDialog);
    QActionGroup *actionGroup = qobject_cast<QActionGroup*>(q->sender());
    qFileDialogUi->treeView->header()->setSectionHidden(actionGroup->actions().indexOf(action) + 1, !action->isChecked());
}

#ifndef QT_NO_PROXYMODEL

void QFileDialog::setProxyModel(QAbstractProxyModel *proxyModel)
{
    Q_D(QFileDialog);
    if ((!proxyModel && !d->proxyModel)
        || (proxyModel == d->proxyModel))
        return;

    QModelIndex idx = d->rootIndex();
    if (d->proxyModel) {
        disconnect(d->proxyModel, SIGNAL(rowsInserted(QModelIndex,int,int)),
            this, SLOT(_q_rowsInserted(QModelIndex)));
    } else {
        disconnect(d->model, SIGNAL(rowsInserted(QModelIndex,int,int)),
            this, SLOT(_q_rowsInserted(QModelIndex)));
    }

    if (proxyModel != 0) {
        proxyModel->setParent(this);
        d->proxyModel = proxyModel;
        proxyModel->setSourceModel(d->model);
        d->qFileDialogUi->listView->setModel(d->proxyModel);
        d->qFileDialogUi->treeView->setModel(d->proxyModel);
#ifndef QT_NO_FSCOMPLETER
        d->completer->setModel(d->proxyModel);
        d->completer->proxyModel = d->proxyModel;
#endif
        connect(d->proxyModel, SIGNAL(rowsInserted(QModelIndex,int,int)),
            this, SLOT(_q_rowsInserted(QModelIndex)));
    } else {
        d->proxyModel = 0;
        d->qFileDialogUi->listView->setModel(d->model);
        d->qFileDialogUi->treeView->setModel(d->model);
#ifndef QT_NO_FSCOMPLETER
        d->completer->setModel(d->model);
        d->completer->sourceModel = d->model;
        d->completer->proxyModel = 0;
#endif
        connect(d->model, SIGNAL(rowsInserted(QModelIndex,int,int)),
            this, SLOT(_q_rowsInserted(QModelIndex)));
    }
    QScopedPointer<QItemSelectionModel> selModel(d->qFileDialogUi->treeView->selectionModel());
    d->qFileDialogUi->treeView->setSelectionModel(d->qFileDialogUi->listView->selectionModel());

    d->setRootIndex(idx);

    // reconnect selection
    QItemSelectionModel *selections = d->qFileDialogUi->listView->selectionModel();
    QObject::connect(selections, SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
                     this, SLOT(_q_selectionChanged()));
    QObject::connect(selections, SIGNAL(currentChanged(QModelIndex,QModelIndex)),
                     this, SLOT(_q_currentChanged(QModelIndex)));
}

QAbstractProxyModel *QFileDialog::proxyModel() const
{
    Q_D(const QFileDialog);
    return d->proxyModel;
}
#endif // QT_NO_PROXYMODEL

void QFileDialogPrivate::createToolButtons()
{
    Q_Q(QFileDialog);
    qFileDialogUi->backButton->setIcon(q->style()->standardIcon(QStyle::SP_ArrowBack, 0, q));
    qFileDialogUi->backButton->setAutoRaise(true);
    qFileDialogUi->backButton->setEnabled(false);
    QObject::connect(qFileDialogUi->backButton, SIGNAL(clicked()), q, SLOT(_q_navigateBackward()));

    qFileDialogUi->forwardButton->setIcon(q->style()->standardIcon(QStyle::SP_ArrowForward, 0, q));
    qFileDialogUi->forwardButton->setAutoRaise(true);
    qFileDialogUi->forwardButton->setEnabled(false);
    QObject::connect(qFileDialogUi->forwardButton, SIGNAL(clicked()), q, SLOT(_q_navigateForward()));

    qFileDialogUi->toParentButton->setIcon(q->style()->standardIcon(QStyle::SP_FileDialogToParent, 0, q));
    qFileDialogUi->toParentButton->setAutoRaise(true);
    qFileDialogUi->toParentButton->setEnabled(false);
    QObject::connect(qFileDialogUi->toParentButton, SIGNAL(clicked()), q, SLOT(_q_navigateToParent()));

    qFileDialogUi->listModeButton->setIcon(q->style()->standardIcon(QStyle::SP_FileDialogListView, 0, q));
    qFileDialogUi->listModeButton->setAutoRaise(true);
    qFileDialogUi->listModeButton->setDown(true);
    QObject::connect(qFileDialogUi->listModeButton, SIGNAL(clicked()), q, SLOT(_q_showListView()));

    qFileDialogUi->detailModeButton->setIcon(q->style()->standardIcon(QStyle::SP_FileDialogDetailedView, 0, q));
    qFileDialogUi->detailModeButton->setAutoRaise(true);
    QObject::connect(qFileDialogUi->detailModeButton, SIGNAL(clicked()), q, SLOT(_q_showDetailsView()));

    QSize toolSize(qFileDialogUi->fileNameEdit->sizeHint().height(), qFileDialogUi->fileNameEdit->sizeHint().height());
    qFileDialogUi->backButton->setFixedSize(toolSize);
    qFileDialogUi->listModeButton->setFixedSize(toolSize);
    qFileDialogUi->detailModeButton->setFixedSize(toolSize);
    qFileDialogUi->forwardButton->setFixedSize(toolSize);
    qFileDialogUi->toParentButton->setFixedSize(toolSize);

    qFileDialogUi->newFolderButton->setIcon(q->style()->standardIcon(QStyle::SP_FileDialogNewFolder, 0, q));
    qFileDialogUi->newFolderButton->setFixedSize(toolSize);
    qFileDialogUi->newFolderButton->setAutoRaise(true);
    qFileDialogUi->newFolderButton->setEnabled(false);
    QObject::connect(qFileDialogUi->newFolderButton, SIGNAL(clicked()), q, SLOT(_q_createDirectory()));
}

void QFileDialogPrivate::createMenuActions()
{
    Q_Q(QFileDialog);

    QAction *goHomeAction =  new QAction(q);
#ifndef QT_NO_SHORTCUT
    goHomeAction->setShortcut(Qt::CTRL + Qt::Key_H + Qt::SHIFT);
#endif
    QObject::connect(goHomeAction, SIGNAL(triggered()), q, SLOT(_q_goHome()));
    q->addAction(goHomeAction);

    // ### TODO add Desktop & Computer actions

    QAction *goToParent =  new QAction(q);
    goToParent->setObjectName(QLatin1String("qt_goto_parent_action"));
#ifndef QT_NO_SHORTCUT
    goToParent->setShortcut(Qt::CTRL + Qt::UpArrow);
#endif
    QObject::connect(goToParent, SIGNAL(triggered()), q, SLOT(_q_navigateToParent()));
    q->addAction(goToParent);

    renameAction = new QAction(q);
    renameAction->setEnabled(false);
    renameAction->setObjectName(QLatin1String("qt_rename_action"));
    QObject::connect(renameAction, SIGNAL(triggered()), q, SLOT(_q_renameCurrent()));

    deleteAction = new QAction(q);
    deleteAction->setEnabled(false);
    deleteAction->setObjectName(QLatin1String("qt_delete_action"));
    QObject::connect(deleteAction, SIGNAL(triggered()), q, SLOT(_q_deleteCurrent()));

    showHiddenAction = new QAction(q);
    showHiddenAction->setObjectName(QLatin1String("qt_show_hidden_action"));
    showHiddenAction->setCheckable(true);
    QObject::connect(showHiddenAction, SIGNAL(triggered()), q, SLOT(_q_showHidden()));

    newFolderAction = new QAction(q);
    newFolderAction->setObjectName(QLatin1String("qt_new_folder_action"));
    QObject::connect(newFolderAction, SIGNAL(triggered()), q, SLOT(_q_createDirectory()));
}

void QFileDialogPrivate::_q_goHome()
{
    Q_Q(QFileDialog);
    q->setDirectory(QDir::homePath());
}

void QFileDialogPrivate::_q_pathChanged(const QString &newPath)
{
    Q_Q(QFileDialog);
    QDir dir(model->rootDirectory());
    qFileDialogUi->toParentButton->setEnabled(dir.exists());
    qFileDialogUi->sidebar->selectUrl(QUrl::fromLocalFile(newPath));
    q->setHistory(qFileDialogUi->lookInCombo->history());

    if (currentHistoryLocation < 0 || currentHistory.value(currentHistoryLocation) != QDir::toNativeSeparators(newPath)) {
        while (currentHistoryLocation >= 0 && currentHistoryLocation + 1 < currentHistory.count()) {
            currentHistory.removeLast();
        }
        currentHistory.append(QDir::toNativeSeparators(newPath));
        ++currentHistoryLocation;
    }
    qFileDialogUi->forwardButton->setEnabled(currentHistory.size() - currentHistoryLocation > 1);
    qFileDialogUi->backButton->setEnabled(currentHistoryLocation > 0);
}

void QFileDialogPrivate::_q_navigateBackward()
{
    Q_Q(QFileDialog);
    if (!currentHistory.isEmpty() && currentHistoryLocation > 0) {
        --currentHistoryLocation;
        QString previousHistory = currentHistory.at(currentHistoryLocation);
        q->setDirectory(previousHistory);
    }
}

void QFileDialogPrivate::_q_navigateForward()
{
    Q_Q(QFileDialog);
    if (!currentHistory.isEmpty() && currentHistoryLocation < currentHistory.size() - 1) {
        ++currentHistoryLocation;
        QString nextHistory = currentHistory.at(currentHistoryLocation);
        q->setDirectory(nextHistory);
    }
}

void QFileDialogPrivate::_q_navigateToParent()
{
    Q_Q(QFileDialog);
    QDir dir(model->rootDirectory());
    QString newDirectory;
    if (dir.isRoot()) {
        newDirectory = model->myComputer().toString();
    } else {
        dir.cdUp();
        newDirectory = dir.absolutePath();
    }
    q->setDirectory(newDirectory);
    emit q->directoryEntered(newDirectory);
}

void QFileDialogPrivate::_q_createDirectory()
{
    Q_Q(QFileDialog);
    qFileDialogUi->listView->clearSelection();

    QString newFolderString = QFileDialog::tr("New Folder");
    QString folderName = newFolderString;
    QString prefix = q->directory().absolutePath() + QDir::separator();
    if (QFile::exists(prefix + folderName)) {
        qlonglong suffix = 2;
        while (QFile::exists(prefix + folderName)) {
            folderName = newFolderString + QString::number(suffix++);
        }
    }

    QModelIndex parent = rootIndex();
    QModelIndex index = model->mkdir(parent, folderName);
    if (!index.isValid())
        return;

    index = select(index);
    if (index.isValid()) {
        qFileDialogUi->treeView->setCurrentIndex(index);
        currentView()->edit(index);
    }
}

void QFileDialogPrivate::_q_showListView()
{
    qFileDialogUi->listModeButton->setDown(true);
    qFileDialogUi->detailModeButton->setDown(false);
    qFileDialogUi->treeView->hide();
    qFileDialogUi->listView->show();
    qFileDialogUi->stackedWidget->setCurrentWidget(qFileDialogUi->listView->parentWidget());
    qFileDialogUi->listView->doItemsLayout();
}

void QFileDialogPrivate::_q_showDetailsView()
{
    qFileDialogUi->listModeButton->setDown(false);
    qFileDialogUi->detailModeButton->setDown(true);
    qFileDialogUi->listView->hide();
    qFileDialogUi->treeView->show();
    qFileDialogUi->stackedWidget->setCurrentWidget(qFileDialogUi->treeView->parentWidget());
    qFileDialogUi->treeView->doItemsLayout();
}

void QFileDialogPrivate::_q_showContextMenu(const QPoint &position)
{
#ifdef QT_NO_MENU
    Q_UNUSED(position);
#else
    Q_Q(QFileDialog);
    QAbstractItemView *view = 0;
    if (q->viewMode() == QFileDialog::Detail)
        view = qFileDialogUi->treeView;
    else
        view = qFileDialogUi->listView;
    QModelIndex index = view->indexAt(position);
    index = mapToSource(index.sibling(index.row(), 0));

    QMenu menu(view);
    if (index.isValid()) {
        // file context menu
        QFile::Permissions p(index.parent().data(QFileSystemModel::FilePermissions).toInt());
        renameAction->setEnabled(p & QFile::WriteUser);
        menu.addAction(renameAction);
        deleteAction->setEnabled(p & QFile::WriteUser);
        menu.addAction(deleteAction);
        menu.addSeparator();
    }
    menu.addAction(showHiddenAction);
    if (qFileDialogUi->newFolderButton->isVisible()) {
        newFolderAction->setEnabled(qFileDialogUi->newFolderButton->isEnabled());
        menu.addAction(newFolderAction);
    }
    menu.exec(view->viewport()->mapToGlobal(position));
#endif // QT_NO_MENU
}

void QFileDialogPrivate::_q_renameCurrent()
{
    Q_Q(QFileDialog);
    QModelIndex index = qFileDialogUi->listView->currentIndex();
    index = index.sibling(index.row(), 0);
    if (q->viewMode() == QFileDialog::List)
        qFileDialogUi->listView->edit(index);
    else
        qFileDialogUi->treeView->edit(index);
}

bool QFileDialogPrivate::removeDirectory(const QString &path)
{
    QModelIndex modelIndex = model->index(path);
    return model->remove(modelIndex);
}

void QFileDialogPrivate::_q_deleteCurrent()
{
    if (model->isReadOnly())
        return;

    QModelIndexList list = qFileDialogUi->listView->selectionModel()->selectedRows();
    for (int i = list.count() - 1; i >= 0; --i) {
        QModelIndex index = list.at(i);
        if (index == qFileDialogUi->listView->rootIndex())
            continue;

        index = mapToSource(index.sibling(index.row(), 0));
        if (!index.isValid())
            continue;

    QString fileName = index.data(QFileSystemModel::FileNameRole).toString();
    QString filePath = index.data(QFileSystemModel::FilePathRole).toString();
    bool isDir = model->isDir(index);

    QFile::Permissions p(index.parent().data(QFileSystemModel::FilePermissions).toInt());
#ifndef QT_NO_MESSAGEBOX
    Q_Q(QFileDialog);
    if (!(p & QFile::WriteUser) && (QMessageBox::warning(q_func(), q_func()->windowTitle(),
                                QFileDialog::tr("'%1' is write protected.\nDo you want to delete it anyway?")
                                .arg(fileName),
                                 QMessageBox::Yes | QMessageBox::No, QMessageBox::No) == QMessageBox::No))
        return;
    else if (QMessageBox::warning(q_func(), q_func()->windowTitle(),
                                  QFileDialog::tr("Are sure you want to delete '%1'?")
                                  .arg(fileName),
                                  QMessageBox::Yes | QMessageBox::No, QMessageBox::No) == QMessageBox::No)
        return;

#else
    if (!(p & QFile::WriteUser))
        return;
#endif // QT_NO_MESSAGEBOX

        // the event loop has run, we can NOT reuse index because the model might have removed it.
        if (isDir) {
            if (!removeDirectory(filePath)) {
#ifndef QT_NO_MESSAGEBOX
            QMessageBox::warning(q, q->windowTitle(),
                                QFileDialog::tr("Could not delete directory."));
#endif
            }
        } else {
            model->remove(index);
        }
    }
}

void QFileDialogPrivate::_q_autoCompleteFileName(const QString &text)
{
    if (text.startsWith(QLatin1String("//")) || text.startsWith(QLatin1Char('\\'))) {
        qFileDialogUi->listView->selectionModel()->clearSelection();
        return;
    }

    QStringList multipleFiles = typedFiles();
    if (multipleFiles.count() > 0) {
        QModelIndexList oldFiles = qFileDialogUi->listView->selectionModel()->selectedRows();
        QModelIndexList newFiles;
        for (int i = 0; i < multipleFiles.count(); ++i) {
            QModelIndex idx = model->index(multipleFiles.at(i));
            if (oldFiles.contains(idx))
                oldFiles.removeAll(idx);
            else
                newFiles.append(idx);
        }
        for (int i = 0; i < newFiles.count(); ++i)
            select(newFiles.at(i));
        if (lineEdit()->hasFocus())
            for (int i = 0; i < oldFiles.count(); ++i)
                qFileDialogUi->listView->selectionModel()->select(oldFiles.at(i),
                    QItemSelectionModel::Toggle | QItemSelectionModel::Rows);
    }
}

void QFileDialogPrivate::_q_updateOkButton()
{
    Q_Q(QFileDialog);
    QPushButton *button =  qFileDialogUi->buttonBox->button((acceptMode == QFileDialog::AcceptOpen)
                    ? QDialogButtonBox::Open : QDialogButtonBox::Save);
    if (!button)
        return;

    bool enableButton = true;
    bool isOpenDirectory = false;

    QStringList files = q->selectedFiles();
    QString lineEditText = lineEdit()->text();

    if (lineEditText.startsWith(QLatin1String("//")) || lineEditText.startsWith(QLatin1Char('\\'))) {
        button->setEnabled(true);
        if (acceptMode == QFileDialog::AcceptSave)
            button->setText(acceptLabel);
        return;
    }

    if (files.isEmpty()) {
        enableButton = false;
    } else if (lineEditText == QLatin1String("..")) {
        isOpenDirectory = true;
    } else {
        switch (fileMode) {
        case QFileDialog::DirectoryOnly:
        case QFileDialog::Directory: {
            QString fn = files.first();
            QModelIndex idx = model->index(fn);
            if (!idx.isValid())
                idx = model->index(getEnvironmentVariable(fn));
            if (!idx.isValid() || !model->isDir(idx))
                enableButton = false;
            break;
        }
        case QFileDialog::AnyFile: {
            QString fn = files.first();
            QFileInfo info(fn);
            QModelIndex idx = model->index(fn);
            QString fileDir;
            QString fileName;
            if (info.isDir()) {
                fileDir = info.canonicalFilePath();
            } else {
                fileDir = fn.mid(0, fn.lastIndexOf(QLatin1Char('/')));
                fileName = fn.mid(fileDir.length() + 1);
            }
            if (lineEditText.contains(QLatin1String(".."))) {
                fileDir = info.canonicalFilePath();
                fileName = info.fileName();
            }

            if (fileDir == q->directory().canonicalPath() && fileName.isEmpty()) {
                enableButton = false;
                break;
            }
            if (idx.isValid() && model->isDir(idx)) {
                isOpenDirectory = true;
                enableButton = true;
                break;
            }
            if (!idx.isValid()) {
                int maxLength = maxNameLength(fileDir);
                enableButton = maxLength < 0 || fileName.length() <= maxLength;
            }
            break;
        }
        case QFileDialog::ExistingFile:
        case QFileDialog::ExistingFiles:
            for (int i = 0; i < files.count(); ++i) {
                QModelIndex idx = model->index(files.at(i));
                if (!idx.isValid())
                    idx = model->index(getEnvironmentVariable(files.at(i)));
                if (!idx.isValid()) {
                    enableButton = false;
                    break;
                }
                if (idx.isValid() && model->isDir(idx)) {
                    isOpenDirectory = true;
                    break;
                }
            }
            break;
        default:
            break;
        }
    }

    button->setEnabled(enableButton);
    if (acceptMode == QFileDialog::AcceptSave)
        button->setText(isOpenDirectory ? QFileDialog::tr("&Open") : acceptLabel);
}

void QFileDialogPrivate::_q_currentChanged(const QModelIndex &index)
{
    _q_updateOkButton();
    emit q_func()->currentChanged(index.data(QFileSystemModel::FilePathRole).toString());
}

void QFileDialogPrivate::_q_enterDirectory(const QModelIndex &index)
{
    Q_Q(QFileDialog);
    // My Computer or a directory
    QModelIndex sourceIndex = index.model() == proxyModel ? mapToSource(index) : index;
    QString path = sourceIndex.data(QFileSystemModel::FilePathRole).toString();
    if (path.isEmpty() || model->isDir(sourceIndex)) {
        q->setDirectory(path);
        emit q->directoryEntered(path);
        if (fileMode == QFileDialog::Directory
                || fileMode == QFileDialog::DirectoryOnly) {
            // ### find out why you have to do both of these.
            lineEdit()->setText(QString());
            lineEdit()->clear();
        }
    } else {
        // Do not accept when shift-clicking to multi-select a file in environments with single-click-activation (KDE)
        if (!q->style()->styleHint(QStyle::SH_ItemView_ActivateItemOnSingleClick)
            || q->fileMode() != QFileDialog::ExistingFiles || !(QApplication::keyboardModifiers() & Qt::CTRL)) {
            q->accept();
        }
    }
}

void QFileDialogPrivate::_q_goToDirectory(const QString &path)
{
 #ifndef QT_NO_MESSAGEBOX
    Q_Q(QFileDialog);
#endif
    QModelIndex index = qFileDialogUi->lookInCombo->model()->index(qFileDialogUi->lookInCombo->currentIndex(),
                                                    qFileDialogUi->lookInCombo->modelColumn(),
                                                    qFileDialogUi->lookInCombo->rootModelIndex());
    QString path2 = path;
    if (!index.isValid())
        index = mapFromSource(model->index(getEnvironmentVariable(path)));
    else {
        path2 = index.data(UrlRole).toUrl().toLocalFile();
        index = mapFromSource(model->index(path2));
    }
    QDir dir(path2);
    if (!dir.exists())
        dir = getEnvironmentVariable(path2);

    if (dir.exists() || path2.isEmpty() || path2 == model->myComputer().toString()) {
        _q_enterDirectory(index);
#ifndef QT_NO_MESSAGEBOX
    } else {
        QString message = QFileDialog::tr("%1\nDirectory not found.\nPlease verify the "
                                          "correct directory name was given.");
        QMessageBox::warning(q, q->windowTitle(), message.arg(path2));
#endif // QT_NO_MESSAGEBOX
    }
}

// Makes a list of filters from a normal filter string "Image Files (*.png *.jpg)"
QStringList qt_clean_filter_list(const QString &filter)
{
    QRegExp regexp(QString::fromLatin1(qt_file_dialog_filter_reg_exp));
    QString f = filter;
    int i = regexp.indexIn(f);
    if (i >= 0)
        f = regexp.cap(2);
    return f.split(QLatin1Char(' '), QString::SkipEmptyParts);
}

void QFileDialogPrivate::_q_useNameFilter(int index)
{
    if (index == nameFilters.size()) {
        QAbstractItemModel *comboModel = qFileDialogUi->fileTypeCombo->model();
        nameFilters.append(comboModel->index(comboModel->rowCount() - 1, 0).data().toString());
    }

    QString nameFilter = nameFilters.at(index);
    QStringList newNameFilters = qt_clean_filter_list(nameFilter);
    if (acceptMode == QFileDialog::AcceptSave) {
        QString newNameFilterExtension;
        if (newNameFilters.count() > 0)
            newNameFilterExtension = QFileInfo(newNameFilters.at(0)).suffix();

        QString fileName = lineEdit()->text();
        const QString fileNameExtension = QFileInfo(fileName).suffix();
        if (!fileNameExtension.isEmpty() && !newNameFilterExtension.isEmpty()) {
            const int fileNameExtensionLength = fileNameExtension.count();
            fileName.replace(fileName.count() - fileNameExtensionLength,
                             fileNameExtensionLength, newNameFilterExtension);
            qFileDialogUi->listView->clearSelection();
            lineEdit()->setText(fileName);
        }
    }

    model->setNameFilters(newNameFilters);
}

void QFileDialogPrivate::_q_selectionChanged()
{
    QModelIndexList indexes = qFileDialogUi->listView->selectionModel()->selectedRows();
    bool stripDirs = (fileMode != QFileDialog::DirectoryOnly && fileMode != QFileDialog::Directory);

    QStringList allFiles;
    for (int i = 0; i < indexes.count(); ++i) {
        if (stripDirs && model->isDir(mapToSource(indexes.at(i))))
            continue;
        allFiles.append(indexes.at(i).data().toString());
    }
    if (allFiles.count() > 1)
        for (int i = 0; i < allFiles.count(); ++i) {
            allFiles.replace(i, QString(QLatin1Char('"') + allFiles.at(i) + QLatin1Char('"')));
    }

    QString finalFiles = allFiles.join(QLatin1String(" "));
    if (!finalFiles.isEmpty() && !lineEdit()->hasFocus() && lineEdit()->isVisible())
        lineEdit()->setText(finalFiles);
    else
        _q_updateOkButton();
}

void QFileDialogPrivate::_q_showHidden()
{
    Q_Q(QFileDialog);
    QDir::Filters dirFilters = q->filter();
    if (showHiddenAction->isChecked())
        dirFilters |= QDir::Hidden;
    else
        dirFilters &= ~QDir::Hidden;
    q->setFilter(dirFilters);
}

void QFileDialogPrivate::_q_rowsInserted(const QModelIndex &parent)
{
    if (!qFileDialogUi->treeView
        || parent != qFileDialogUi->treeView->rootIndex()
        || !qFileDialogUi->treeView->selectionModel()
        || qFileDialogUi->treeView->selectionModel()->hasSelection()
        || qFileDialogUi->treeView->model()->rowCount(parent) == 0)
        return;
}

void QFileDialogPrivate::_q_fileRenamed(const QString &path, const QString oldName, const QString newName)
{
    if (fileMode == QFileDialog::Directory || fileMode == QFileDialog::DirectoryOnly) {
        if (path == rootPath() && lineEdit()->text() == oldName)
            lineEdit()->setText(newName);
    }
}

bool QFileDialogPrivate::itemViewKeyboardEvent(QKeyEvent *event) {

    Q_Q(QFileDialog);
    switch (event->key()) {
    case Qt::Key_Backspace:
        _q_navigateToParent();
        return true;
    case Qt::Key_Back:
#ifdef QT_KEYPAD_NAVIGATION
        if (QApplication::keypadNavigationEnabled())
            return false;
#endif
    case Qt::Key_Left:
        if (event->key() == Qt::Key_Back || event->modifiers() == Qt::AltModifier) {
            _q_navigateBackward();
            return true;
        }
        break;
    case Qt::Key_Escape:
        q->hide();
        return true;
    default:
        break;
    }
    return false;
}

QString QFileDialogPrivate::getEnvironmentVariable(const QString &string)
{
#ifdef Q_OS_UNIX
    if (string.size() > 1 && string.startsWith(QLatin1Char('$'))) {
        return QString::fromLocal8Bit(getenv(string.mid(1).toLatin1().constData()));
    }
#else
    if (string.size() > 2 && string.startsWith(QLatin1Char('%')) && string.endsWith(QLatin1Char('%'))) {
        return QString::fromLocal8Bit(qgetenv(string.mid(1, string.size() - 2).toLatin1().constData()));
    }
#endif
    return string;
}

void QFileDialogComboBox::init(QFileDialogPrivate *d_pointer) {
    d_ptr = d_pointer;
    urlModel = new QUrlModel(this);
    urlModel->showFullPath = true;
    urlModel->setFileSystemModel(d_ptr->model);
    setModel(urlModel);
}

void QFileDialogComboBox::showPopup()
{
    if (model()->rowCount() > 1)
        QComboBox::showPopup();

    urlModel->setUrls(QList<QUrl>());
    QList<QUrl> list;
    QModelIndex idx = d_ptr->model->index(d_ptr->rootPath());
    while (idx.isValid()) {
        QUrl url = QUrl::fromLocalFile(idx.data(QFileSystemModel::FilePathRole).toString());
        if (url.isValid())
            list.append(url);
        idx = idx.parent();
    }
    // add "my computer"
    list.append(QUrl::fromLocalFile(QLatin1String("")));
    urlModel->addUrls(list, 0);
    idx = model()->index(model()->rowCount() - 1, 0);

    // append history
    QList<QUrl> urls;
    for (int i = 0; i < m_history.count(); ++i) {
        QUrl path = QUrl::fromLocalFile(m_history.at(i));
        if (!urls.contains(path))
            urls.prepend(path);
    }
    if (urls.count() > 0) {
        model()->insertRow(model()->rowCount());
        idx = model()->index(model()->rowCount()-1, 0);
        // ### TODO maybe add a horizontal line before this
        model()->setData(idx, QFileDialog::tr("Recent Places"));
        QStandardItemModel *m = qobject_cast<QStandardItemModel*>(model());
        if (m) {
            Qt::ItemFlags flags = m->flags(idx);
            flags &= ~Qt::ItemIsEnabled;
            m->item(idx.row(), idx.column())->setFlags(flags);
        }
        urlModel->addUrls(urls, -1, false);
    }
    setCurrentIndex(0);

    QComboBox::showPopup();
}

// Exact same as QComboBox::paintEvent(), except we elide the text.
void QFileDialogComboBox::paintEvent(QPaintEvent *)
{
    QStylePainter painter(this);
    painter.setPen(palette().color(QPalette::Text));

    // draw the combobox frame, focusrect and selected etc.
    QStyleOptionComboBox opt;
    initStyleOption(&opt);

    QRect editRect = style()->subControlRect(QStyle::CC_ComboBox, &opt,
                                                QStyle::SC_ComboBoxEditField, this);
    int size = editRect.width() - opt.iconSize.width() - 4;
    opt.currentText = opt.fontMetrics.elidedText(opt.currentText, Qt::ElideMiddle, size);
    painter.drawComplexControl(QStyle::CC_ComboBox, opt);

    // draw the icon and text
    painter.drawControl(QStyle::CE_ComboBoxLabel, opt);
}

QFileDialogListView::QFileDialogListView(QWidget *parent) : QListView(parent)
{
}

void QFileDialogListView::init(QFileDialogPrivate *d_pointer)
{
    d_ptr = d_pointer;
    setSelectionBehavior(QAbstractItemView::SelectRows);
    setWrapping(true);
    setResizeMode(QListView::Adjust);
    setEditTriggers(QAbstractItemView::EditKeyPressed);
    setContextMenuPolicy(Qt::CustomContextMenu);
#ifndef QT_NO_DRAGANDDROP
    setDragDropMode(QAbstractItemView::InternalMove);
#endif
}

QSize QFileDialogListView::sizeHint() const
{
    int height = qMax(10, sizeHintForRow(0));
    return QSize(QListView::sizeHint().width() * 2, height * 30);
}

void QFileDialogListView::keyPressEvent(QKeyEvent *e)
{
#ifdef QT_KEYPAD_NAVIGATION
    if (QApplication::navigationMode() == Qt::NavigationModeKeypadDirectional) {
        QListView::keyPressEvent(e);
        return;
    }
#endif // QT_KEYPAD_NAVIGATION

    if (!d_ptr->itemViewKeyboardEvent(e))
        QListView::keyPressEvent(e);
    e->accept();
}

QFileDialogTreeView::QFileDialogTreeView(QWidget *parent) : QTreeView(parent)
{
}

void QFileDialogTreeView::init(QFileDialogPrivate *d_pointer)
{
    d_ptr = d_pointer;
    setSelectionBehavior(QAbstractItemView::SelectRows);
    setRootIsDecorated(false);
    setItemsExpandable(false);
    setSortingEnabled(true);
    header()->setSortIndicator(0, Qt::AscendingOrder);
    header()->setStretchLastSection(false);
    setTextElideMode(Qt::ElideMiddle);
    setEditTriggers(QAbstractItemView::EditKeyPressed);
    setContextMenuPolicy(Qt::CustomContextMenu);
#ifndef QT_NO_DRAGANDDROP
    setDragDropMode(QAbstractItemView::InternalMove);
#endif
}

void QFileDialogTreeView::keyPressEvent(QKeyEvent *e)
{
#ifdef QT_KEYPAD_NAVIGATION
    if (QApplication::navigationMode() == Qt::NavigationModeKeypadDirectional) {
        QTreeView::keyPressEvent(e);
        return;
    }
#endif // QT_KEYPAD_NAVIGATION

    if (!d_ptr->itemViewKeyboardEvent(e))
        QTreeView::keyPressEvent(e);
    e->accept();
}

QSize QFileDialogTreeView::sizeHint() const
{
    int height = qMax(10, sizeHintForRow(0));
    QSize sizeHint = header()->sizeHint();
    return QSize(sizeHint.width() * 4, height * 30);
}

void QFileDialogLineEdit::keyPressEvent(QKeyEvent *e)
{
#ifdef QT_KEYPAD_NAVIGATION
    if (QApplication::navigationMode() == Qt::NavigationModeKeypadDirectional) {
        QLineEdit::keyPressEvent(e);
        return;
    }
#endif // QT_KEYPAD_NAVIGATION

    int key = e->key();
    QLineEdit::keyPressEvent(e);
    if (key != Qt::Key_Escape)
        e->accept();
    if (hideOnEsc && (key == Qt::Key_Escape || key == Qt::Key_Return || key == Qt::Key_Enter)) {
        e->accept();
        hide();
        d_ptr->currentView()->setFocus(Qt::ShortcutFocusReason);
    }
}

#ifndef QT_NO_FSCOMPLETER

QString QFSCompleter::pathFromIndex(const QModelIndex &index) const
{
    const QFileSystemModel *dirModel;
    if (proxyModel)
        dirModel = qobject_cast<const QFileSystemModel *>(proxyModel->sourceModel());
    else
        dirModel = sourceModel;
    QString currentLocation = dirModel->rootPath();
    QString path = index.data(QFileSystemModel::FilePathRole).toString();
    if (!currentLocation.isEmpty() && path.startsWith(currentLocation)) {
#if defined(Q_OS_UNIX) || defined(Q_OS_WINCE)
        if (currentLocation == QDir::separator())
            return path.mid(currentLocation.length());
#endif
        if (currentLocation.endsWith(QLatin1Char('/')))
            return path.mid(currentLocation.length());
        else
            return path.mid(currentLocation.length()+1);
    }
    return index.data(QFileSystemModel::FilePathRole).toString();
}

QStringList QFSCompleter::splitPath(const QString &path) const
{
    if (path.isEmpty())
        return QStringList(completionPrefix());

    QString pathCopy = QDir::toNativeSeparators(path);
    QString sep = QDir::separator();
#if defined(Q_OS_SYMBIAN)
    if (pathCopy == QLatin1String("\\"))
        return QStringList(pathCopy);
#elif defined(Q_OS_WIN)
    if (pathCopy == QLatin1String("\\") || pathCopy == QLatin1String("\\\\"))
        return QStringList(pathCopy);
    QString doubleSlash(QLatin1String("\\\\"));
    if (pathCopy.startsWith(doubleSlash))
        pathCopy = pathCopy.mid(2);
    else
        doubleSlash.clear();
#elif defined(Q_OS_UNIX)
    bool expanded;
    pathCopy = qt_tildeExpansion(pathCopy, &expanded);
    if (expanded) {
        QFileSystemModel *dirModel;
        if (proxyModel)
            dirModel = qobject_cast<QFileSystemModel *>(proxyModel->sourceModel());
        else
            dirModel = sourceModel;
        dirModel->fetchMore(dirModel->index(pathCopy));
    }
#endif

    QRegExp re(QLatin1Char('[') + QRegExp::escape(sep) + QLatin1Char(']'));

#if defined(Q_OS_SYMBIAN)
    QStringList parts = pathCopy.split(re, QString::SkipEmptyParts);
    if (pathCopy.endsWith(sep))
        parts.append(QString());
#elif defined(Q_OS_WIN)
    QStringList parts = pathCopy.split(re, QString::SkipEmptyParts);
    if (!doubleSlash.isEmpty() && !parts.isEmpty())
        parts[0].prepend(doubleSlash);
    if (pathCopy.endsWith(sep))
        parts.append(QString());
#else
    QStringList parts = pathCopy.split(re);
    if (pathCopy[0] == sep[0]) // read the "/" at the beginning as the split removed it
        parts[0] = sep[0];
#endif

#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
    bool startsFromRoot = !parts.isEmpty() && parts[0].endsWith(QLatin1Char(':'));
#else
    bool startsFromRoot = pathCopy[0] == sep[0];
#endif
    if (parts.count() == 1 || (parts.count() > 1 && !startsFromRoot)) {
        const QFileSystemModel *dirModel;
        if (proxyModel)
            dirModel = qobject_cast<const QFileSystemModel *>(proxyModel->sourceModel());
        else
            dirModel = sourceModel;
        QString currentLocation = QDir::toNativeSeparators(dirModel->rootPath());
#if defined(Q_OS_WIN) || defined(Q_OS_SYMBIAN)
        if (currentLocation.endsWith(QLatin1Char(':')))
            currentLocation.append(sep);
#endif
        if (currentLocation.contains(sep) && path != currentLocation) {
            QStringList currentLocationList = splitPath(currentLocation);
            while (!currentLocationList.isEmpty()
                   && parts.count() > 0
                   && parts.at(0) == QLatin1String("..")) {
                parts.removeFirst();
                currentLocationList.removeLast();
            }
            if (!currentLocationList.isEmpty() && currentLocationList.last().isEmpty())
                currentLocationList.removeLast();
            return currentLocationList + parts;
        }
    }
    return parts;
}

#endif // QT_NO_COMPLETER

#ifdef QT3_SUPPORT

QString QFileDialog::selectedFile() const
{
    QStringList files = selectedFiles();
    return files.size() ? files.at(0) : QString();
}

#endif // QT3_SUPPORT

QT_END_NAMESPACE

#include "moc_qfiledialog.cpp"

#endif // QT_NO_FILEDIALOG