src/qfileinfogatherer_p.h

   1 /****************************************************************************
   2 **
   3 ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
   4 **
   5 ** This file is part of the QtGui module of the Qt Toolkit.
   6 **
   7 ** This file may be used under the terms of the GNU General Public
   8 ** License version 2.0 as published by the Free Software Foundation
   9 ** and appearing in the file LICENSE.GPL included in the packaging of
  10 ** this file.  Please review the following information to ensure GNU
  11 ** General Public Licensing requirements will be met:
  12 ** http://www.trolltech.com/products/qt/opensource.html
  13 **
  14 ** If you are unsure which license is appropriate for your use, please
  15 ** review the following information:
  16 ** http://www.trolltech.com/products/qt/licensing.html or contact the
  17 ** sales department at sales@trolltech.com.
  18 **
  19 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  20 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  21 **
  22 ****************************************************************************/
  23
  24 #ifndef QFILEINFOGATHERER_H
  25 #define QFILEINFOGATHERER_H
  26
  27 #include <qthread.h>
  28 #include <qmutex.h>
  29 #include <qwaitcondition.h>
  30 #include <qfilesystemwatcher.h>
  31 #if QT_VERSION >= 0x040300
  32 #include <qfileiconprovider.h>
  33 #else
  34 #include <qdirmodel.h>
  35 #endif
  36 #include <qpair.h>
  37 #include <qdatetime.h>
  38 #include <qstack.h>
  39 #include <qdir.h>
  40
  41 class QExtendedInformation {
  42 public:
  43     enum Type { Dir, File, System };
  44
  45     QExtendedInformation() : size(0), fileType(System), isHidden(false),
  46                              isSymLink(false), caseSensitive(true) {}
  47
  48     qint64 size;
  49     QString displayType;
  50     QIcon icon;
  51     QDateTime lastModified;
  52     QFile::Permissions permissions;
  53     Type fileType;
  54     bool isHidden : 1;
  55     bool isSymLink : 1;
  56     bool caseSensitive : 1;
  57
  58     inline bool isDir() { return fileType == Dir; }
  59     inline bool isFile() { return fileType == File; }
  60     inline bool isSystem() { return fileType == System; }
  61
  62     bool operator ==(const QExtendedInformation &fileInfo) const {
  63        return fileInfo.size == size
  64        && fileInfo.displayType == displayType
  65        && fileInfo.lastModified == lastModified
  66        && fileInfo.permissions == permissions
  67        && fileInfo.fileType == fileType
  68        && fileInfo.isHidden == isHidden
  69        && fileInfo.isSymLink == isSymLink
  70        && fileInfo.caseSensitive == caseSensitive;
  71     }
  72     void operator =(const QExtendedInformation &fileInfo) {
  73         size = fileInfo.size;
  74         displayType = fileInfo.displayType;
  75         icon = fileInfo.icon;
  76         lastModified = fileInfo.lastModified;
  77         permissions = fileInfo.permissions;
  78         fileType = fileInfo.fileType;
  79         isHidden = fileInfo.isHidden;
  80         isSymLink = fileInfo.isSymLink;
  81         caseSensitive = fileInfo.caseSensitive;
  82     }
  83 };
  84
  85 class QFileIconProvider;
  86
  87 class Q_AUTOTEST_EXPORT QFileInfoGatherer : public QThread
  88 {
  89 Q_OBJECT
  90
  91 Q_SIGNALS:
  92     void updates(const QString &directory, const QList<QPair<QString, QExtendedInformation> > &updates);
  93     void newListOfFiles(const QString &directory, const QStringList &listOfFiles) const;
  94     void nameResolved(const QString &fileName, const QString &resolvedName) const;
  95
  96 public:
  97     QFileInfoGatherer(QObject *parent = 0);
  98     ~QFileInfoGatherer();
  99
 100     void clear();
 101     QExtendedInformation getInfo(const QFileInfo &info) const;
 102
 103 public Q_SLOTS:
 104     void list(const QString &directoryPath);
 105     void fetchExtendedInformation(const QString &path, const QStringList &files);
 106     void updateFile(const QString &path);
 107     void setResolveSymlinks(bool enable);
 108     bool resolveSymlinks() const;
 109     void setIconProvider(QFileIconProvider *provider);
 110     QFileIconProvider *iconProvider() const;
 111
 112 protected:
 113     void run();
 114     void getFileInfos(const QString &path, const QStringList &files);
 115
 116 private:
 117     void fetch(const QFileInfo &info, QTime &base, bool &firstTime, QList<QPair<QString,QExtendedInformation> > &updatedFiles, const QString &path);
 118     QString translateDriveName(const QFileInfo &drive) const;
 119     QFile::Permissions translatePermissions(const QFileInfo &fileInfo) const;
 120
 121     QMutex mutex;
 122     QWaitCondition condition;
 123     bool abort;
 124
 125     QStack<QString> path;
 126     QStack<QStringList> files;
 127
 128     QFileSystemWatcher *watcher;
 129     bool m_resolveSymlinks;
 130     QFileIconProvider *m_iconProvider;
 131     QFileIconProvider defaultProvider;
 132 #ifndef Q_OS_WIN
 133     uint userId;
 134     uint groupId;
 135 #endif
 136 };
 137
 138 #endif // QFILEINFOGATHERER_H
 139