qfiledialog.cpp

qt-x11-opensource-src-4.1.4.tar.gz源码

    listView->setSelectionMode(selectionMode(fileMode));
    listView->setSelectionBehavior(QAbstractItemView::SelectRows);
    listView->setRootIndex(current);

    listView->setWrapping(true);
    listView->setResizeMode(QListView::Adjust);
    listView->setEditTriggers(QAbstractItemView::EditKeyPressed);
    listView->setContextMenuPolicy(Qt::CustomContextMenu);
#ifndef QT_NO_DRAGANDDROP
    listView->setDragEnabled(true);
#endif

    grid->addWidget(listView, 1, 0, 1, 6);

    QObject::connect(listView, SIGNAL(activated(QModelIndex)), q, SLOT(_q_enterDirectory(QModelIndex)));
    QObject::connect(listView, SIGNAL(customContextMenuRequested(QPoint)),
                     q, SLOT(_q_showContextMenu(QPoint)));

#ifndef QT_NO_SHORTCUT
    QShortcut *shortcut = new QShortcut(listView);
    shortcut->setKey(QKeySequence("Delete"));
    QObject::connect(shortcut, SIGNAL(activated()), q, SLOT(_q_deleteCurrent()));
#endif
}

void QFileDialogPrivate::setupTreeView(const QModelIndex &current, QGridLayout *grid)
{
    Q_Q(QFileDialog);
    treeView = new QFileDialogTreeView(this);

    treeView->setModel(model);
    treeView->setSelectionModel(selections);
    treeView->setSelectionMode(selectionMode(fileMode));

    treeView->viewport()->setAcceptDrops(true);
    treeView->setRootIsDecorated(false);
    treeView->setItemsExpandable(false);
    treeView->header()->setStretchLastSection(true);
    treeView->header()->setSortIndicator(0, Qt::AscendingOrder);
    treeView->header()->setSortIndicatorShown(true);
    treeView->header()->setClickable(true);
    treeView->header()->resizeSection(0, 165); // this si the same size as Stretch ((530 - (100 * 2)) / 2)
    treeView->setEditTriggers(QAbstractItemView::EditKeyPressed);
    treeView->setContextMenuPolicy(Qt::CustomContextMenu);
    treeView->setRootIndex(current);
    treeView->hide();

    grid->addWidget(treeView, 1, 0, 1, 6);

    QObject::connect(treeView->header(), SIGNAL(sectionClicked(int)), q, SLOT(_q_sortByColumn(int)));
    QObject::connect(treeView, SIGNAL(activated(QModelIndex)), q, SLOT(_q_enterDirectory(QModelIndex)));
    QObject::connect(treeView, SIGNAL(customContextMenuRequested(QPoint)),
                     q, SLOT(_q_showContextMenu(QPoint)));

#ifndef QT_NO_SHORTCUT
    QShortcut *shortcut = new QShortcut(treeView);
    shortcut->setKey(QKeySequence("Delete"));
    QObject::connect(shortcut, SIGNAL(activated()), q, SLOT(_q_deleteCurrent()));
#endif
}

void QFileDialogPrivate::setupToolButtons(const QModelIndex &current, QGridLayout *grid)
{
    Q_Q(QFileDialog);
    QHBoxLayout *box = new QHBoxLayout;
    box->setMargin(3);
    box->setSpacing(3);
    QSize tools(22, 22);

    backButton = new QToolButton(q);
    backButton->setIcon(q->style()->standardPixmap(QStyle::SP_FileDialogBack));
#ifndef QT_NO_TOOLTIP
    backButton->setToolTip(QFileDialog::tr("Back"));
#endif
    backButton->setAutoRaise(true);
    backButton->setEnabled(false);
    backButton->setFixedSize(tools);
    QObject::connect(backButton, SIGNAL(clicked()), q, SLOT(_q_navigateToPrevious()));
    box->addWidget(backButton);

    toParentButton = new QToolButton(q);
    toParentButton->setIcon(q->style()->standardPixmap(QStyle::SP_FileDialogToParent));
#ifndef QT_NO_TOOLTIP
    toParentButton->setToolTip(QFileDialog::tr("Parent Directory"));
#endif
    toParentButton->setAutoRaise(true);
    toParentButton->setEnabled(model->parent(current).isValid());
    toParentButton->setFixedSize(tools);
    QObject::connect(toParentButton, SIGNAL(clicked()), q, SLOT(_q_navigateToParent()));
    box->addWidget(toParentButton);

    newFolderButton = new QToolButton(q);
    newFolderButton->setIcon(q->style()->standardPixmap(QStyle::SP_FileDialogNewFolder));
#ifndef QT_NO_TOOLTIP
    newFolderButton->setToolTip(QFileDialog::tr("Create New Folder"));
#endif
    newFolderButton->setAutoRaise(true);
    newFolderButton->setFixedSize(tools);
    QObject::connect(newFolderButton, SIGNAL(clicked()), q, SLOT(_q_createDirectory()));
    box->addWidget(newFolderButton);

    listModeButton = new QToolButton(q);
    listModeButton->setIcon(q->style()->standardPixmap(QStyle::SP_FileDialogListView));
#ifndef QT_NO_TOOLTIP
    listModeButton->setToolTip(QFileDialog::tr("List View"));
#endif
    listModeButton->setAutoRaise(true);
    listModeButton->setDown(true);
    listModeButton->setFixedSize(tools);
    QObject::connect(listModeButton, SIGNAL(clicked()), q, SLOT(_q_showList()));
    box->addWidget(listModeButton);

    detailModeButton = new QToolButton(q);
    detailModeButton->setIcon(q->style()->standardPixmap(QStyle::SP_FileDialogDetailedView));
#ifndef QT_NO_TOOLTIP
    detailModeButton->setToolTip(QFileDialog::tr("Detail View"));
#endif
    detailModeButton->setAutoRaise(true);
    detailModeButton->setFixedSize(tools);
    QObject::connect(detailModeButton, SIGNAL(clicked()), q, SLOT(_q_showDetails()));
    box->addWidget(detailModeButton);
    box->setSizeConstraint(QLayout::SetFixedSize);

    grid->addLayout(box, 0, 4, 1, 2);
}

void QFileDialogPrivate::setupWidgets(QGridLayout *grid)
{
    // labels
    Q_Q(QFileDialog);
    lookInLabel = new QLabel(QFileDialog::tr("Look in:"), q);
    grid->addWidget(lookInLabel, 0, 0);
    fileNameLabel = new QLabel(QFileDialog::tr("File name:"), q);
    grid->addWidget(fileNameLabel, 2, 0);
    fileTypeLabel = new QLabel(QFileDialog::tr("Files of type:"), q);
    grid->addWidget(fileTypeLabel, 3, 0);

    // push buttons
    acceptButton = new QPushButton(QFileDialog::tr("Open"), q);
    QObject::connect(acceptButton, SIGNAL(clicked()), q, SLOT(accept()));
    grid->addWidget(acceptButton, 2, 5, Qt::AlignLeft);

    rejectButton = new QPushButton(QFileDialog::tr("Cancel"), q);
    QObject::connect(rejectButton, SIGNAL(clicked()), q, SLOT(reject()));
    grid->addWidget(rejectButton, 3, 5, Qt::AlignLeft);

    // "lookin" combobox
    lookInCombo = new QComboBox(q);
    lookInCombo->setInsertPolicy(QComboBox::NoInsert);
    lookInCombo->setDuplicatesEnabled(false);
    lookInCombo->setEditable(true);
    lookInCombo->setAutoCompletion(false);
    QObject::connect(lookInCombo, SIGNAL(activated(QString)), q, SLOT(_q_enterDirectory(QString)));
    lookInEdit = new QFileDialogLineEdit(lookInCombo);
    QObject::connect(lookInEdit, SIGNAL(textChanged(QString)),
                     q, SLOT(_q_autoCompleteDirectory(QString)));
    QObject::connect(lookInEdit, SIGNAL(returnPressed()), q, SLOT(_q_enterDirectory()));
    lookInCombo->setLineEdit(lookInEdit);
    lookInCombo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    grid->addWidget(lookInCombo, 0, 1, 1, 3);

    // filename
    fileNameEdit = new QFileDialogLineEdit(q);
    fileNameEdit->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    QObject::connect(fileNameEdit, SIGNAL(textChanged(QString)),
                     q, SLOT(_q_autoCompleteFileName(QString)));
    QObject::connect(fileNameEdit, SIGNAL(returnPressed()), q, SLOT(accept()));
    grid->addWidget(fileNameEdit, 2, 1, 1, 3);

    // filetype
    fileTypeCombo = new QComboBox(q);
    fileTypeCombo->setDuplicatesEnabled(false);
    fileTypeCombo->setSizeAdjustPolicy(QComboBox::AdjustToMinimumContentsLength);
    fileTypeCombo->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
    QObject::connect(fileTypeCombo, SIGNAL(activated(QString)), q, SLOT(_q_useFilter(QString)));
    grid->addWidget(fileTypeCombo, 3, 1, 1, 3);
}

void QFileDialogPrivate::updateButtons(const QModelIndex &index)
{
    toParentButton->setEnabled(index.isValid());
    backButton->setEnabled(!history.isEmpty());
    newFolderButton->setEnabled(!model->isReadOnly());
    bool block = lookInCombo->blockSignals(true);
    if (index.isValid()) {
        QString pth = toNative(model->filePath(index));
        Q_ASSERT(!pth.isEmpty()); // this should be caught by the first if statement
        QIcon icn = model->fileIcon(index);
        int i = lookInCombo->findText(pth);
        if (i > -1) {
            lookInCombo->setCurrentIndex(i);
        } else {
            lookInCombo->addItem(icn, pth);
            lookInCombo->setCurrentIndex(lookInCombo->count() - 1);
        }
    } else { // "My Computer" is already in the list
        lookInCombo->setCurrentIndex(0);
    }
    lookInCombo->blockSignals(block);
}

void QFileDialogPrivate::setRootIndex(const QModelIndex &index)
{
    Q_Q(QFileDialog);
    bool block = selections->blockSignals(true);
    selections->clear();
    listView->setRootIndex(index);
    treeView->setRootIndex(index);
    model->refresh(index);
    selections->blockSignals(block);
    if (fileMode == QFileDialog::DirectoryOnly)
        fileNameEdit->clear();
    else
        q->selectFile(fileNameEdit->text());
}

QModelIndex QFileDialogPrivate::rootIndex() const
{
    return listView->rootIndex();
}

void QFileDialogPrivate::setDirSorting(QDir::SortFlags sort)
{
    int sortBy = sort & QDir::SortByMask;
    sortByNameAction->setChecked(sortBy == QDir::Name);
    sortBySizeAction->setChecked(sortBy == QDir::Size);
    sortByDateAction->setChecked(sortBy == QDir::Time);
    unsortedAction->setChecked(sortBy == QDir::Unsorted);
    model->setSorting(sort);
    model->refresh(rootIndex());
}

void QFileDialogPrivate::setDirFilter(QDir::Filters filters)
{
    showHiddenAction->setChecked(filters & QDir::Hidden);
    model->setFilter(filters);
    model->refresh(rootIndex());
}

QDir::Filters QFileDialogPrivate::filterForMode(QFileDialog::FileMode mode)
{
    QDir::Filters f = QDir::Drives | QDir::AllDirs;
    if (mode != QFileDialog::DirectoryOnly)
        f |= QDir::Files;
    return f;
}

QAbstractItemView::SelectionMode QFileDialogPrivate::selectionMode(QFileDialog::FileMode mode)
{
    if (mode == QFileDialog::ExistingFiles)
        return QAbstractItemView::ExtendedSelection;
    return QAbstractItemView::SingleSelection;
}

QModelIndex QFileDialogPrivate::matchDir(const QString &text, const QModelIndex &first) const
{
    QModelIndexList matches = model->match(first, Qt::DisplayRole,
                                           text, model->rowCount(first.parent()),
                                           Qt::MatchStartsWith|Qt::MatchCaseSensitive|Qt::MatchWrap);
    for (int i = 0; i < matches.count(); ++i)
        if (model->isDir(matches.at(i)))
            return matches.at(i);
    return QModelIndex();
}

QModelIndex QFileDialogPrivate::matchName(const QString &name, const QModelIndex &first) const
{
    QModelIndexList matches = model->match(first, Qt::DisplayRole, name, 1,
                                           Qt::MatchStartsWith|Qt::MatchCaseSensitive|Qt::MatchWrap);
    if (matches.count() <= 0)
        return QModelIndex();
    return matches.first();
}

bool QFileDialogPrivate::itemViewKeyboardEvent(QKeyEvent *e)
{
    switch (e->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 (e->key() == Qt::Key_Back || e->modifiers() == Qt::AltModifier) {
            _q_navigateToPrevious();
            return true;
        }
        break;
    default:
        break;
    }
    return false;
}


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


/******************************************************************
 *
 * Static functions for the native filedialogs
 *
 ******************************************************************/

#include <qapplication.h>
#include <qstyle.h>

#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);

#elif defined(Q_WS_MAC)
extern QStringList qt_mac_get_open_file_names(const QFileDialogArgs &args,
                                              QString *pwd,
                                              QString *selectedFilter);

extern QString qt_mac_get_save_file_name(const QFileDialogArgs &args,
                                         QString *pwd,
                                         QString *selectedFilter);
#endif

QString QFileDialogPrivate::workingDirectory(const QString &path)
{
    if (!path.isEmpty()) {
        QFileInfo info(path);
        if (info.exists() && info.isDir())
            return path;
        return info.absolutePath();
    }
    return QDir::currentPath();
}

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

/*!
  This is a convenience static function that returns an existing file
  selected by the user. If the user presses Cancel, it returns a null
  string.

  \code
    QString s = QFileDialog::getOpenFileName(
                    this,
                    "Choose a file to open",
                    "/home",
                    "Images (*.png *.xpm *.jpg)");
  \endcode

  The function creates a modal file dialog with the given \a parent widget.
  If the parent is not 0, the dialog will be shown centered over the
  parent widget.

  The file dialog's working directory will be set to \a dir.
  If \a dir includes a file name, the file will be selected. Only files
  that match the given \a filter are shown. The filter selected is set to
  \a selectedFilter. The parameters \a dir, \a selectedFilter, and
  \a filter may be empty strings. The \a options argument holds various
  options about how to run the dialog, see the QFileDialog::Option enum for
  more information on the flags you can pass.

  The dialog's caption is set to \a caption. If \a caption is not
  specified then a default caption will be used.

  Under Windows and Mac OS X, this static function will use the native
  file dialog and not a QFileDialog.

  Note that on Windows the dialog will spin a blocking modal event loop
  that will not dispatch any QTimers, and if parent is not 0 then it will
  position the dialog just under the parent's title bar.

  Under Unix/X11, the normal behavior of the file dialog is to resolve
  and follow symlinks. For example, if \c{/usr/tmp} is a symlink to
  \c{/var/tmp}, the file dialog will change to \c{/var/tmp} after
  entering \c{/usr/tmp}. If \a options includes DontResolveSymlinks,
  the file dialog will treat symlinks as regular directories.

  \sa getOpenFileNames(), getSaveFileName(), getExistingDirectory()
*/

QString QFileDialog::getOpenFileName(QWidget *