filebrowser.cpp Example File

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 #include "filebrowser.h"

 #include "documentpropertieswidget.h"

 #include <qdocumentgallery.h>

 #include <QtGui>

 FileBrowser::FileBrowser(QWidget *parent, Qt::WindowFlags flags)
     : QMainWindow(parent, flags)
     , gallery(new QDocumentGallery(this))
     , fileSystemModel(0)
     , view(0)
 {
 #ifdef Q_WS_MAEMO_5
     setAttribute(Qt::WA_Maemo5StackedWindow);
 #endif

     menuBar()->addAction(tr("Documents"), this, SLOT(browseDocuments()));
     menuBar()->addAction(tr("Audio"), this, SLOT(browseAudio()));
     menuBar()->addAction(tr("Images"), this, SLOT(browseImages()));
     menuBar()->addAction(tr("Videos"), this, SLOT(browseVideos()));

     fileSystemModel = new QFileSystemModel(this);
     fileSystemModel->setRootPath(QDesktopServices::storageLocation(QDesktopServices::HomeLocation));

     view = new QListView;
     view->setModel(fileSystemModel);
     connect(view, SIGNAL(activated(QModelIndex)), this, SLOT(activated(QModelIndex)));

     setCentralWidget(view);

     browseDocuments();
 }

 void FileBrowser::browseAudio()
 {
     rootPath = QDesktopServices::storageLocation(QDesktopServices::MusicLocation);

     fileSystemModel->setFilter(QDir::AllEntries | QDir::NoDotAndDotDot | QDir::AllDirs);

     view->setRootIndex(fileSystemModel->index(rootPath));

     setWindowTitle(tr("Audio"));
 }

 void FileBrowser::browseDocuments()
 {
     rootPath = QDesktopServices::storageLocation(QDesktopServices::DocumentsLocation);

     fileSystemModel->setFilter(QDir::AllEntries | QDir::NoDotAndDotDot | QDir::AllDirs);

     view->setRootIndex(fileSystemModel->index(rootPath));

     setWindowTitle(tr("Documents"));
 }

 void FileBrowser::browseImages()
 {
     rootPath = QDesktopServices::storageLocation(QDesktopServices::PicturesLocation);

     fileSystemModel->setFilter(QDir::AllEntries | QDir::NoDotAndDotDot | QDir::AllDirs);

     view->setRootIndex(fileSystemModel->index(rootPath));

     setWindowTitle(tr("Images"));
 }

 void FileBrowser::browseVideos()
 {
     rootPath = QDesktopServices::storageLocation(QDesktopServices::MoviesLocation);

     fileSystemModel->setFilter(QDir::AllEntries | QDir::NoDotAndDotDot | QDir::AllDirs);

     view->setRootIndex(fileSystemModel->index(rootPath));

     setWindowTitle(tr("Videos"));
 }

 void FileBrowser::activated(const QModelIndex &index)
 {
     QFileInfo fileInfo = fileSystemModel->fileInfo(index);

     if (fileInfo.isDir() && fileInfo.fileName() != QLatin1String(".")) {
         if (fileInfo.fileName() == QLatin1String("..")) {
             QModelIndex parent = view->rootIndex().parent();

             fileInfo = fileSystemModel->fileInfo(parent);

             if (fileInfo.absoluteFilePath() == rootPath)
                 fileSystemModel->setFilter(QDir::AllEntries | QDir::NoDotAndDotDot | QDir::AllDirs);

             view->setRootIndex(parent);
         } else {
             fileSystemModel->setFilter(QDir::AllEntries | QDir::AllDirs);

             view->setRootIndex(index);
         }

         setWindowTitle(fileInfo.fileName());
     } else {
         if (fileInfo.fileName() == QLatin1String("."))
             fileInfo = fileSystemModel->fileInfo(view->rootIndex());

 #if defined(Q_WS_MAEMO_5)
         DocumentPropertiesWidget *widget = new DocumentPropertiesWidget(fileInfo, gallery, this);
         widget->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Preferred);

         QScrollArea *window = new QScrollArea(this);
         window->setWindowFlags(window->windowFlags() | Qt::Window);
         window->setAttribute(Qt::WA_DeleteOnClose);
         window->setAttribute(Qt::WA_Maemo5StackedWindow);
         window->setWidgetResizable(true);
         window->setWidget(widget);
         window->show();
 #elif defined (Q_OS_SYMBIAN)
         QScrollArea *window = new QScrollArea(this);
         DocumentPropertiesWidget *widget = new DocumentPropertiesWidget(fileInfo, gallery, window);
         widget->setWindowModality(Qt::WindowModal);
         window->setWindowFlags(window->windowFlags() | Qt::Dialog);
         window->setAttribute(Qt::WA_DeleteOnClose);
         window->setWidgetResizable(true);
         window->setWidget(widget);
         window->showMaximized();
 #else
         DocumentPropertiesWidget *widget = new DocumentPropertiesWidget(fileInfo, gallery, this);
         widget->setWindowFlags(widget->windowFlags() | Qt::Dialog);
         widget->setAttribute(Qt::WA_DeleteOnClose);
         widget->setWindowModality(Qt::WindowModal);
 # if defined(Q_OS_SYMBIAN)
         widget->showMaximized();
 # else
         widget->show();
 # endif
 #endif
     }
 }