#include <qfileinfogatherer_p.h>

Inheritance diagram for QFileInfoGatherer:

Public Slots
void	fetchExtendedInformation (const QString &path, const QStringList &files)
	Fetch extended information for all files in path. More...

QFileIconProvider *	iconProvider () const

void	list (const QString &directoryPath)

bool	resolveSymlinks () const

void	setIconProvider (QFileIconProvider *provider)

void	setResolveSymlinks (bool enable)

void	updateFile (const QString &path)
	Fetch extended information for all filePath. More...

Public Slots inherited from QThread
void	quit ()
	Tells the thread's event loop to exit with return code 0 (success). More...

void	start (Priority=InheritPriority)
	Begins execution of the thread by calling run(). More...

void	terminate ()
	Terminates the execution of the thread. More...

Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...

Signals
void	directoryLoaded (const QString &path)

void	nameResolved (const QString &fileName, const QString &resolvedName) const

void	newListOfFiles (const QString &directory, const QStringList &listOfFiles) const

void	updates (const QString &directory, const QList< QPair< QString, QFileInfo > > &updates)

Signals inherited from QThread
void	finished ()
	This signal is emitted when the thread has finished executing. More...

void	started ()
	This signal is emitted when the thread starts executing. More...

void	terminated ()
	This signal is emitted when the thread is terminated. More...

Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...

Public Functions
void	clear ()

QExtendedInformation	getInfo (const QFileInfo &info) const

	QFileInfoGatherer (QObject *parent=0)
	Creates thread. More...

void	removePath (const QString &path)

	~QFileInfoGatherer ()
	Destroys thread. More...

Public Functions inherited from QThread
void	exit (int retcode=0)
	Tells the thread's event loop to exit with a return code. More...

bool	isFinished () const
	Returns true if the thread is finished; otherwise returns false. More...

bool	isRunning () const
	Returns true if the thread is running; otherwise returns false. More...

Priority	priority () const
	Returns the priority for a running thread. More...

	QThread (QObject *parent=0)
	Constructs a new QThread to manage a new thread. More...

void	setPriority (Priority priority)
	This function sets the priority for a running thread. More...

void	setStackSize (uint stackSize)
	Sets the maximum stack size for the thread to stackSize. More...

uint	stackSize () const
	Returns the maximum stack size for the thread (if set with setStackSize()); otherwise returns zero. More...

bool	wait (unsigned long time=ULONG_MAX)
	Blocks the thread until either of these conditions is met: More...

	~QThread ()
	Destroys the QThread. More...

Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...

const QObjectList &	children () const
	Returns a list of child objects. More...

bool	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const

bool	disconnect (const char signal=0, const QObject receiver=0, const char *member=0)

bool	disconnect (const QObject receiver, const char member=0)

void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...

void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...

QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...

virtual bool	event (QEvent *)
	This virtual function receives events to an object and should return true if the event e was recognized and processed. More...

virtual bool	eventFilter (QObject , QEvent )
	Filters events if this object has been installed as an event filter for the watched object. More...

template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...

template<typename T >
QList< T >	findChildren (const QString &aName=QString()) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...

template<typename T >
QList< T >	findChildren (const QRegExp &re) const

bool	inherits (const char *classname) const
	Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...

void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...

bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...

void	killTimer (int id)
	Kills the timer with timer identifier, id. More...

virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...

void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...

QString	objectName () const

QObject *	parent () const
	Returns a pointer to the parent object. More...

QVariant	property (const char *name) const
	Returns the value of the object's name property. More...

Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...

void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...

void	setObjectName (const QString &name)

void	setParent (QObject *)
	Makes the object a child of parent. More...

bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...

void	setUserData (uint id, QObjectUserData *data)

bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...

int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...

QThread *	thread () const
	Returns the thread in which the object lives. More...

QObjectUserData *	userData (uint id) const

virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...

Protected Functions
void	getFileInfos (const QString &path, const QStringList &files)

void	run ()
	The starting point for the thread. More...

Protected Functions inherited from QThread
int	exec ()
	Enters the event loop and waits until exit() is called, returning the value that was passed to exit(). More...

	QThread (QThreadPrivate &dd, QObject *parent=0)

Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...

virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...

virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...

virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...

	QObject (QObjectPrivate &dd, QObject *parent=0)

int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...

QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...

Private Functions
void	fetch (const QFileInfo &info, QElapsedTimer &base, bool &firstTime, QList< QPair< QString, QFileInfo > > &updatedFiles, const QString &path)

QString	translateDriveName (const QFileInfo &drive) const

Properties
volatile bool	abort

QWaitCondition	condition

QFileIconProvider	defaultProvider

QStack< QStringList >	files

QFileIconProvider *	m_iconProvider

bool	m_resolveSymlinks

QMutex	mutex

QStack< QString >	path

QFileSystemWatcher *	watcher

Additional Inherited Members
Public Types inherited from QThread
enum	Priority { IdlePriority, LowestPriority, LowPriority, NormalPriority, HighPriority, HighestPriority, TimeCriticalPriority, InheritPriority }
	This enum type indicates how the operating system should schedule newly created threads. More...

Static Public Functions inherited from QThread
static QThread *	currentThread ()
	Returns a pointer to a QThread which manages the currently executing thread. More...

static Qt::HANDLE	currentThreadId ()
	Returns the thread handle of the currently executing thread. More...

static int	idealThreadCount ()
	Returns the ideal number of threads that can be run on the system. More...

static void	yieldCurrentThread ()
	Yields execution of the current thread to another runnable thread, if any. More...

Static Public Functions inherited from QObject
static bool	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...

static bool	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	Disconnects signal in object sender from method in object receiver. More...

static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)

static uint	registerUserData ()

static QString	tr (const char sourceText, const char comment=0, int n=-1)

static QString	trUtf8 (const char sourceText, const char comment=0, int n=-1)

Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...

Static Protected Functions inherited from QThread
static void	msleep (unsigned long)
	Forces the current thread to sleep for msecs milliseconds. More...

static void	setTerminationEnabled (bool enabled=true)
	Enables or disables termination of the current thread based on the enabled parameter. More...

static void	sleep (unsigned long)
	Forces the current thread to sleep for secs seconds. More...

static void	usleep (unsigned long)
	Forces the current thread to sleep for usecs microseconds. More...

Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr

Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject

Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()

QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()

T *	qobject_cast (QObject *object)

	QObjectList

void *	qt_find_obj_child (QObject parent, const char type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

Definition at line 155 of file qfileinfogatherer_p.h.

Constructors and Destructors

◆ QFileInfoGatherer()

QFileInfoGatherer::QFileInfoGatherer ( QObject * parent = 0 )

Creates thread.

Definition at line 74 of file qfileinfogatherer.cpp.

     : QThread(parent), abort(false),
 #ifndef QT_NO_FILESYSTEMWATCHER
       watcher(0),
 #endif
       m_resolveSymlinks(false), m_iconProvider(&defaultProvider)
 {
 #ifdef Q_OS_WIN
     m_resolveSymlinks = true;
 #elif !defined(Q_OS_INTEGRITY) && !defined(Q_OS_VXWORKS)
     userId = getuid();
     groupId = getgid();
 #endif
 #ifndef QT_NO_FILESYSTEMWATCHER
     watcher = new QFileSystemWatcher(this);
     connect(watcher, SIGNAL(directoryChanged(QString)), this, SLOT(list(QString)));
     connect(watcher, SIGNAL(fileChanged(QString)), this, SLOT(updateFile(QString)));
 #endif
     start(LowPriority);
 }

◆ ~QFileInfoGatherer()

QFileInfoGatherer::~QFileInfoGatherer ( )

Destroys thread.

Definition at line 98 of file qfileinfogatherer.cpp.

 {
     QMutexLocker locker(&mutex);
     abort = true;
     condition.wakeOne();
     locker.unlock();
     wait();
 }

Functions

◆ clear()

void QFileInfoGatherer::clear ( )

Definition at line 170 of file qfileinfogatherer.cpp.

 {
 #ifndef QT_NO_FILESYSTEMWATCHER
     QMutexLocker locker(&mutex);
     watcher->removePaths(watcher->files());
     watcher->removePaths(watcher->directories());
 #endif
 }

◆ directoryLoaded

void QFileInfoGatherer::directoryLoaded ( const QString & path )

signal

Referenced by getFileInfos().

◆ fetch()

void QFileInfoGatherer::fetch	(	const QFileInfo &	info,
		QElapsedTimer &	base,
		bool &	firstTime,
		QList< QPair< QString, QFileInfo > > &	updatedFiles,
		const QString &	path
	)

private

Definition at line 341 of file qfileinfogatherer.cpp.

Referenced by getFileInfos().

                                                                                                                                                                    {
     updatedFiles.append(QPair<QString, QFileInfo>(fileInfo.fileName(), fileInfo));
     QElapsedTimer current;
     current.start();
     if ((firstTime && updatedFiles.count() > 100) || base.msecsTo(current) > 1000) {
         emit updates(path, updatedFiles);
         updatedFiles.clear();
         base = current;
         firstTime = false;
     }
 }

◆ fetchExtendedInformation

void QFileInfoGatherer::fetchExtendedInformation	(	const QString &	path,
		const QStringList &	files
	)

slot

Fetch extended information for all files in path.

See also: updateFile(), update(), resolvedName()

Definition at line 137 of file qfileinfogatherer.cpp.

Referenced by list(), and updateFile().

 {
     QMutexLocker locker(&mutex);
     // See if we already have this dir/file in our que
     int loc = this->path.lastIndexOf(path);
     while (loc > 0)  {
         if (this->files.at(loc) == files) {
             return;
         }
         loc = this->path.lastIndexOf(path, loc - 1);
     }
     this->path.push(path);
     this->files.push(files);
     condition.wakeAll();
 }

◆ getFileInfos()

void QFileInfoGatherer::getFileInfos	(	const QString &	path,
		const QStringList &	files
	)

protected

Definition at line 279 of file qfileinfogatherer.cpp.

Referenced by run().

 {
 #ifndef QT_NO_FILESYSTEMWATCHER
     if (files.isEmpty()
         && !watcher->directories().contains(path)
         && !path.isEmpty()
         && !path.startsWith(QLatin1String("//")) /*don't watch UNC path*/) {
         watcher->addPath(path);
     }
 #endif
 
     // List drives
     if (path.isEmpty()) {
 #ifdef QT_BUILD_INTERNAL
         fetchedRoot = true;
 #endif
         QFileInfoList infoList;
         if (files.isEmpty()) {
             infoList = QDir::drives();
         } else {
             for (int i = 0; i < files.count(); ++i)
                 infoList << QFileInfo(files.at(i));
         }
         for (int i = infoList.count() - 1; i >= 0; --i) {
             QString driveName = translateDriveName(infoList.at(i));
             QList<QPair<QString,QFileInfo> > updatedFiles;
             updatedFiles.append(QPair<QString,QFileInfo>(driveName, infoList.at(i)));
             emit updates(path, updatedFiles);
         }
         return;
     }
 
     QElapsedTimer base;
     base.start();
     QFileInfo fileInfo;
     bool firstTime = true;
     QList<QPair<QString, QFileInfo> > updatedFiles;
     QStringList filesToCheck = files;
 
     QString itPath = QDir::fromNativeSeparators(files.isEmpty() ? path : QLatin1String(""));
     QDirIterator dirIt(itPath, QDir::AllEntries | QDir::System | QDir::Hidden);
     QStringList allFiles;
     while(!abort && dirIt.hasNext()) {
         dirIt.next();
         fileInfo = dirIt.fileInfo();
         allFiles.append(fileInfo.fileName());
     fetch(fileInfo, base, firstTime, updatedFiles, path);
     }
     if (!allFiles.isEmpty())
         emit newListOfFiles(path, allFiles);
 
     QStringList::const_iterator filesIt = filesToCheck.constBegin();
     while(!abort && filesIt != filesToCheck.constEnd()) {
         fileInfo.setFile(path + QDir::separator() + *filesIt);
         ++filesIt;
         fetch(fileInfo, base, firstTime, updatedFiles, path);
     }
     if (!updatedFiles.isEmpty())
         emit updates(path, updatedFiles);
     emit directoryLoaded(path);
 }

◆ getInfo()

QExtendedInformation QFileInfoGatherer::getInfo ( const QFileInfo & info ) const

Definition at line 230 of file qfileinfogatherer.cpp.

 {
     QExtendedInformation info(fileInfo);
     info.icon = m_iconProvider->icon(fileInfo);
     info.displayType = m_iconProvider->type(fileInfo);
 #ifndef QT_NO_FILESYSTEMWATCHER
     // ### Not ready to listen all modifications
     #if 0
         // Enable the next two commented out lines to get updates when the file sizes change...
         if (!fileInfo.exists() && !fileInfo.isSymLink()) {
             info.size = -1;
             //watcher->removePath(fileInfo.absoluteFilePath());
         } else {
             if (!fileInfo.absoluteFilePath().isEmpty() && fileInfo.exists() && fileInfo.isReadable()
                 && !watcher->files().contains(fileInfo.absoluteFilePath())) {
                 //watcher->addPath(fileInfo.absoluteFilePath());
             }
         }
     #endif
 #endif
 
     if (m_resolveSymlinks && info.isSymLink(/* ignoreNtfsSymLinks = */ true)) {
         QFileInfo resolvedInfo(fileInfo.symLinkTarget());
         resolvedInfo = resolvedInfo.canonicalFilePath();
         if (resolvedInfo.exists()) {
             emit nameResolved(fileInfo.filePath(), resolvedInfo.fileName());
         }
     }
     return info;
 }

◆ iconProvider

QFileIconProvider * QFileInfoGatherer::iconProvider ( ) const

slot

Definition at line 127 of file qfileinfogatherer.cpp.

 {
     return m_iconProvider;
 }

◆ list

void QFileInfoGatherer::list ( const QString & directoryPath )

slot

Definition at line 197 of file qfileinfogatherer.cpp.

Referenced by QFileInfoGatherer(), and run().

 {
     fetchExtendedInformation(directoryPath, QStringList());
 }

◆ nameResolved

void QFileInfoGatherer::nameResolved	(	const QString &	fileName,
		const QString &	resolvedName
	)		const

signal

Referenced by getInfo().

◆ newListOfFiles

void QFileInfoGatherer::newListOfFiles	(	const QString &	directory,
		const QStringList &	listOfFiles
	)		const

signal

Referenced by getFileInfos().

◆ removePath()

void QFileInfoGatherer::removePath ( const QString & path )

Definition at line 184 of file qfileinfogatherer.cpp.

Referenced by QFileSystemModel::remove(), and QFileSystemModel::rmdir().

 {
 #ifndef QT_NO_FILESYSTEMWATCHER
     QMutexLocker locker(&mutex);
     watcher->removePath(path);
 #endif
 }

◆ resolveSymlinks

bool QFileInfoGatherer::resolveSymlinks ( ) const

slot

Definition at line 116 of file qfileinfogatherer.cpp.

 {
     return m_resolveSymlinks;
 }

◆ run()

void QFileInfoGatherer::run ( void )

protectedvirtual

The starting point for the thread.

After calling start(), the newly created thread calls this function. The default implementation simply calls exec().

You can reimplement this function to facilitate advanced thread management. Returning from this method will end the execution of the thread.

See also: start() wait()

Reimplemented from QThread.

Definition at line 205 of file qfileinfogatherer.cpp.

 {
     forever {
         bool updateFiles = false;
         QMutexLocker locker(&mutex);
         if (abort) {
             return;
         }
         if (this->path.isEmpty())
             condition.wait(&mutex);
         QString path;
         QStringList list;
         if (!this->path.isEmpty()) {
             path = this->path.first();
             list = this->files.first();
             this->path.pop_front();
             this->files.pop_front();
             updateFiles = true;
         }
         locker.unlock();
         if (updateFiles)
             getFileInfos(path, list);
     }
 }

◆ setIconProvider

void QFileInfoGatherer::setIconProvider ( QFileIconProvider * provider )

slot

Definition at line 121 of file qfileinfogatherer.cpp.

 {
     QMutexLocker locker(&mutex);
     m_iconProvider = provider;
 }

◆ setResolveSymlinks

void QFileInfoGatherer::setResolveSymlinks ( bool enable )

slot

Definition at line 107 of file qfileinfogatherer.cpp.

 {
     Q_UNUSED(enable);
 #ifdef Q_OS_WIN
     QMutexLocker locker(&mutex);
     m_resolveSymlinks = enable;
 #endif
 }

◆ translateDriveName()

QString QFileInfoGatherer::translateDriveName ( const QFileInfo & drive ) const

private

Definition at line 261 of file qfileinfogatherer.cpp.

Referenced by getFileInfos().

 {
     QString driveName = drive.absoluteFilePath();
 #if defined(Q_OS_WIN) && !defined(Q_OS_WINCE)
     if (driveName.startsWith(QLatin1Char('/'))) // UNC host
         return drive.fileName();
 #endif
 #if (defined(Q_OS_WIN) && !defined(Q_OS_WINCE)) || defined(Q_OS_SYMBIAN)
     if (driveName.endsWith(QLatin1Char('/')))
         driveName.chop(1);
 #endif
     return driveName;
 }

◆ updateFile

void QFileInfoGatherer::updateFile ( const QString & filePath )

slot

Fetch extended information for all filePath.

See also: fetchExtendedInformation()

Definition at line 158 of file qfileinfogatherer.cpp.

Referenced by QFileInfoGatherer().

 {
     QString dir = filePath.mid(0, filePath.lastIndexOf(QDir::separator()));
     QString fileName = filePath.mid(dir.length() + 1);
     fetchExtendedInformation(dir, QStringList(fileName));
 }

◆ updates

void QFileInfoGatherer::updates	(	const QString &	directory,
		const QList< QPair< QString, QFileInfo > > &	updates
	)

signal

Referenced by fetch(), and getFileInfos().

Properties

◆ abort

volatile bool QFileInfoGatherer::abort

private

Definition at line 192 of file qfileinfogatherer_p.h.

Referenced by getFileInfos(), run(), and ~QFileInfoGatherer().

◆ condition

QWaitCondition QFileInfoGatherer::condition

private

Definition at line 191 of file qfileinfogatherer_p.h.

Referenced by fetchExtendedInformation(), run(), and ~QFileInfoGatherer().

◆ defaultProvider

QFileIconProvider QFileInfoGatherer::defaultProvider

private

Definition at line 202 of file qfileinfogatherer_p.h.

◆ files

QStack<QStringList> QFileInfoGatherer::files

private

Definition at line 195 of file qfileinfogatherer_p.h.

Referenced by fetchExtendedInformation(), getFileInfos(), and run().

◆ m_iconProvider

QFileIconProvider* QFileInfoGatherer::m_iconProvider

private

Definition at line 201 of file qfileinfogatherer_p.h.

Referenced by getInfo(), iconProvider(), and setIconProvider().

◆ m_resolveSymlinks

bool QFileInfoGatherer::m_resolveSymlinks

private

Definition at line 200 of file qfileinfogatherer_p.h.

Referenced by getInfo(), QFileInfoGatherer(), resolveSymlinks(), and setResolveSymlinks().

◆ mutex

QMutex QFileInfoGatherer::mutex

private

Definition at line 190 of file qfileinfogatherer_p.h.

Referenced by clear(), fetchExtendedInformation(), removePath(), run(), setIconProvider(), setResolveSymlinks(), and ~QFileInfoGatherer().

◆ path

QStack<QString> QFileInfoGatherer::path

private

Definition at line 194 of file qfileinfogatherer_p.h.

Referenced by getFileInfos(), and run().

◆ watcher

QFileSystemWatcher* QFileInfoGatherer::watcher

private

Definition at line 198 of file qfileinfogatherer_p.h.

Referenced by clear(), getFileInfos(), getInfo(), QFileInfoGatherer(), and removePath().

The documentation for this class was generated from the following files:

/src/gui/dialogs/qfileinfogatherer_p.h
/src/gui/dialogs/qfileinfogatherer.cpp

Public Slots

Signals

Public Functions

Protected Functions

Private Functions

Properties

Additional Inherited Members

Detailed Description

Constructors and Destructors

◆ QFileInfoGatherer()

◆ ~QFileInfoGatherer()

Functions

◆ clear()

◆ directoryLoaded

◆ fetch()

◆ fetchExtendedInformation

◆ getFileInfos()

◆ getInfo()

◆ iconProvider

◆ list

◆ nameResolved

◆ newListOfFiles

◆ removePath()

◆ resolveSymlinks

◆ run()

◆ setIconProvider

◆ setResolveSymlinks

◆ translateDriveName()

◆ updateFile

◆ updates

Properties

◆ abort

◆ condition

◆ defaultProvider

◆ files

◆ m_iconProvider

◆ m_resolveSymlinks

◆ mutex

◆ path

◆ watcher