--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/imports/folderlistmodel/qdeclarativefolderlistmodel.cpp Tue Jul 06 15:10:48 2010 +0300
@@ -0,0 +1,399 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//![code]
+#include "qdeclarativefolderlistmodel.h"
+#include <QDirModel>
+#include <QDebug>
+#include <qdeclarativecontext.h>
+
+QT_BEGIN_NAMESPACE
+
+class QDeclarativeFolderListModelPrivate
+{
+public:
+ QDeclarativeFolderListModelPrivate()
+ : sortField(QDeclarativeFolderListModel::Name), sortReversed(false), count(0) {
+ nameFilters << QLatin1String("*");
+ }
+
+ void updateSorting() {
+ QDir::SortFlags flags = 0;
+ switch(sortField) {
+ case QDeclarativeFolderListModel::Unsorted:
+ flags |= QDir::Unsorted;
+ break;
+ case QDeclarativeFolderListModel::Name:
+ flags |= QDir::Name;
+ break;
+ case QDeclarativeFolderListModel::Time:
+ flags |= QDir::Time;
+ break;
+ case QDeclarativeFolderListModel::Size:
+ flags |= QDir::Size;
+ break;
+ case QDeclarativeFolderListModel::Type:
+ flags |= QDir::Type;
+ break;
+ }
+
+ if (sortReversed)
+ flags |= QDir::Reversed;
+
+ model.setSorting(flags);
+ }
+
+ QDirModel model;
+ QUrl folder;
+ QStringList nameFilters;
+ QModelIndex folderIndex;
+ QDeclarativeFolderListModel::SortField sortField;
+ bool sortReversed;
+ int count;
+};
+
+/*!
+ \qmlclass FolderListModel
+ \brief The FolderListModel provides a model of the contents of a folder in a filesystem.
+
+ FolderListModel provides access to the local filesystem. The \e folder property
+ specifies the folder to list.
+
+ Qt uses "/" as a universal directory separator in the same way that "/" is
+ used as a path separator in URLs. If you always use "/" as a directory
+ separator, Qt will translate your paths to conform to the underlying
+ operating system.
+
+ This type is made available by importing the \c Qt.labs.folderlistmodel module.
+ \e {Elements in the Qt.labs module are not guaranteed to remain compatible
+ in future versions.}
+
+ \bold{import Qt.labs.folderlistmodel 1.0}
+
+ The roles available are:
+ \list
+ \o fileName
+ \o filePath
+ \endlist
+
+ Additionally a file entry can be differentiated from a folder entry
+ via the \l isFolder() method.
+*/
+
+QDeclarativeFolderListModel::QDeclarativeFolderListModel(QObject *parent)
+ : QAbstractListModel(parent)
+{
+ QHash<int, QByteArray> roles;
+ roles[FileNameRole] = "fileName";
+ roles[FilePathRole] = "filePath";
+ setRoleNames(roles);
+
+ d = new QDeclarativeFolderListModelPrivate;
+ d->model.setFilter(QDir::AllDirs | QDir::Files | QDir::Drives | QDir::NoDotAndDotDot);
+ connect(&d->model, SIGNAL(rowsInserted(const QModelIndex&,int,int))
+ , this, SLOT(inserted(const QModelIndex&,int,int)));
+ connect(&d->model, SIGNAL(rowsRemoved(const QModelIndex&,int,int))
+ , this, SLOT(removed(const QModelIndex&,int,int)));
+ connect(&d->model, SIGNAL(dataChanged(const QModelIndex&,const QModelIndex&))
+ , this, SLOT(dataChanged(const QModelIndex&,const QModelIndex&)));
+ connect(&d->model, SIGNAL(modelReset()), this, SLOT(refresh()));
+ connect(&d->model, SIGNAL(layoutChanged()), this, SLOT(refresh()));
+}
+
+QDeclarativeFolderListModel::~QDeclarativeFolderListModel()
+{
+ delete d;
+}
+
+QVariant QDeclarativeFolderListModel::data(const QModelIndex &index, int role) const
+{
+ QVariant rv;
+ QModelIndex modelIndex = d->model.index(index.row(), 0, d->folderIndex);
+ if (modelIndex.isValid()) {
+ if (role == FileNameRole)
+ rv = d->model.data(modelIndex, QDirModel::FileNameRole).toString();
+ else if (role == FilePathRole)
+ rv = QUrl::fromLocalFile(d->model.data(modelIndex, QDirModel::FilePathRole).toString());
+ }
+ return rv;
+}
+
+int QDeclarativeFolderListModel::rowCount(const QModelIndex &parent) const
+{
+ Q_UNUSED(parent);
+ return d->count;
+}
+
+/*!
+ \qmlproperty string FolderListModel::folder
+
+ The \a folder property holds the folder the model is currently providing.
+
+ It is a URL, but must be a file: or qrc: URL (or relative to such a URL).
+*/
+QUrl QDeclarativeFolderListModel::folder() const
+{
+ return d->folder;
+}
+
+void QDeclarativeFolderListModel::setFolder(const QUrl &folder)
+{
+ if (folder == d->folder)
+ return;
+ QModelIndex index = d->model.index(folder.toLocalFile());
+ if ((index.isValid() && d->model.isDir(index)) || folder.toLocalFile().isEmpty()) {
+
+ d->folder = folder;
+ QMetaObject::invokeMethod(this, "refresh", Qt::QueuedConnection);
+ emit folderChanged();
+ }
+}
+
+QUrl QDeclarativeFolderListModel::parentFolder() const
+{
+ QString localFile = d->folder.toLocalFile();
+ if (!localFile.isEmpty()) {
+ QDir dir(localFile);
+#if defined(Q_OS_SYMBIAN) || defined(Q_OS_WIN)
+ if (dir.isRoot())
+ dir.setPath("");
+ else
+#endif
+ dir.cdUp();
+ localFile = dir.path();
+ } else {
+ int pos = d->folder.path().lastIndexOf(QLatin1Char('/'));
+ if (pos == -1)
+ return QUrl();
+ localFile = d->folder.path().left(pos);
+ }
+ return QUrl::fromLocalFile(localFile);
+}
+
+/*!
+ \qmlproperty list<string> FolderListModel::nameFilters
+
+ The \a nameFilters property contains a list of filename filters.
+ The filters may include the ? and * wildcards.
+
+ The example below filters on PNG and JPEG files:
+
+ \code
+ FolderListModel {
+ nameFilters: [ "*.png", "*.jpg" ]
+ }
+ \endcode
+*/
+QStringList QDeclarativeFolderListModel::nameFilters() const
+{
+ return d->nameFilters;
+}
+
+void QDeclarativeFolderListModel::setNameFilters(const QStringList &filters)
+{
+ d->nameFilters = filters;
+ d->model.setNameFilters(d->nameFilters);
+}
+
+void QDeclarativeFolderListModel::classBegin()
+{
+}
+
+void QDeclarativeFolderListModel::componentComplete()
+{
+ if (!d->folder.isValid() || !QDir().exists(d->folder.toLocalFile()))
+ setFolder(QUrl(QLatin1String("file://")+QDir::currentPath()));
+
+ if (!d->folderIndex.isValid())
+ QMetaObject::invokeMethod(this, "refresh", Qt::QueuedConnection);
+}
+
+QDeclarativeFolderListModel::SortField QDeclarativeFolderListModel::sortField() const
+{
+ return d->sortField;
+}
+
+void QDeclarativeFolderListModel::setSortField(SortField field)
+{
+ if (field != d->sortField) {
+ d->sortField = field;
+ d->updateSorting();
+ }
+}
+
+bool QDeclarativeFolderListModel::sortReversed() const
+{
+ return d->sortReversed;
+}
+
+void QDeclarativeFolderListModel::setSortReversed(bool rev)
+{
+ if (rev != d->sortReversed) {
+ d->sortReversed = rev;
+ d->updateSorting();
+ }
+}
+
+/*!
+ \qmlmethod bool FolderListModel::isFolder(int index)
+
+ Returns true if the entry \a index is a folder; otherwise
+ returns false.
+*/
+bool QDeclarativeFolderListModel::isFolder(int index) const
+{
+ if (index != -1) {
+ QModelIndex idx = d->model.index(index, 0, d->folderIndex);
+ if (idx.isValid())
+ return d->model.isDir(idx);
+ }
+ return false;
+}
+
+void QDeclarativeFolderListModel::refresh()
+{
+ d->folderIndex = QModelIndex();
+ if (d->count) {
+ emit beginRemoveRows(QModelIndex(), 0, d->count);
+ d->count = 0;
+ emit endRemoveRows();
+ }
+ d->folderIndex = d->model.index(d->folder.toLocalFile());
+ int newcount = d->model.rowCount(d->folderIndex);
+ if (newcount) {
+ emit beginInsertRows(QModelIndex(), 0, newcount-1);
+ d->count = newcount;
+ emit endInsertRows();
+ }
+}
+
+void QDeclarativeFolderListModel::inserted(const QModelIndex &index, int start, int end)
+{
+ if (index == d->folderIndex) {
+ emit beginInsertRows(QModelIndex(), start, end);
+ d->count = d->model.rowCount(d->folderIndex);
+ emit endInsertRows();
+ }
+}
+
+void QDeclarativeFolderListModel::removed(const QModelIndex &index, int start, int end)
+{
+ if (index == d->folderIndex) {
+ emit beginRemoveRows(QModelIndex(), start, end);
+ d->count = d->model.rowCount(d->folderIndex);
+ emit endRemoveRows();
+ }
+}
+
+void QDeclarativeFolderListModel::dataChanged(const QModelIndex &start, const QModelIndex &end)
+{
+ if (start.parent() == d->folderIndex)
+ emit dataChanged(index(start.row(),0), index(end.row(),0));
+}
+
+/*!
+ \qmlproperty bool FolderListModel::showDirs
+
+ If true (the default), directories are included in the model.
+
+ Note that the nameFilters are ignored for directories.
+*/
+bool QDeclarativeFolderListModel::showDirs() const
+{
+ return d->model.filter() & QDir::AllDirs;
+}
+
+void QDeclarativeFolderListModel::setShowDirs(bool on)
+{
+ if (!(d->model.filter() & QDir::AllDirs) == !on)
+ return;
+ if (on)
+ d->model.setFilter(d->model.filter() | QDir::AllDirs | QDir::Drives);
+ else
+ d->model.setFilter(d->model.filter() & ~(QDir::AllDirs | QDir::Drives));
+}
+
+/*!
+ \qmlproperty bool FolderListModel::showDotAndDotDot
+
+ If true, the "." and ".." directories are included in the model.
+
+ The default is false.
+*/
+bool QDeclarativeFolderListModel::showDotAndDotDot() const
+{
+ return !(d->model.filter() & QDir::NoDotAndDotDot);
+}
+
+void QDeclarativeFolderListModel::setShowDotAndDotDot(bool on)
+{
+ if (!(d->model.filter() & QDir::NoDotAndDotDot) == on)
+ return;
+ if (on)
+ d->model.setFilter(d->model.filter() & ~QDir::NoDotAndDotDot);
+ else
+ d->model.setFilter(d->model.filter() | QDir::NoDotAndDotDot);
+}
+
+/*!
+ \qmlproperty bool FolderListModel::showOnlyReadable
+
+ If true, only readable files and directories are shown.
+
+ The default is false.
+*/
+bool QDeclarativeFolderListModel::showOnlyReadable() const
+{
+ return d->model.filter() & QDir::Readable;
+}
+
+void QDeclarativeFolderListModel::setShowOnlyReadable(bool on)
+{
+ if (!(d->model.filter() & QDir::Readable) == !on)
+ return;
+ if (on)
+ d->model.setFilter(d->model.filter() | QDir::Readable);
+ else
+ d->model.setFilter(d->model.filter() & ~QDir::Readable);
+}
+
+//![code]
+QT_END_NAMESPACE