====== Strom zobrazující soubory ======

<code Python>
from __future__ import print_function
 
import sys
 
try :
   from PyQt5.QtCore import *
   from PyQt5.QtGui import *
   from PyQt5.QtWidgets import *
   print ("using PyQt5")
except :
   from PyQt4.QtCore import *
   from PyQt4.QtGui import *
   print ("using PyQt4")
 
# Windows: pip3 install PyQt5
# Debian, Ubuntu: apt-get install python3-pyqt5
# Fedora: dnf install python3-qt5
# ArchLinux: pacman -S python-pyqt5 
 
def variant_to_str (v) :
    if sys.version_info >= (3, 0) :
       return v
    else :
       v.toString ()

def bytes_to_str (data) :           
    if sys.version_info >= (3, 0) :
        return str (data, "latin1")
    else:
        return str (data)
        
class Window (QMainWindow) :
 
    def __init__ (self, parent = None) :
       super (Window, self).__init__ (parent)
 
       self.tree = QTreeWidget ()
       self.tree.itemDoubleClicked.connect (self.itemClick)
 
       self.tab = QTabWidget ()
 
       splitter = QSplitter (self)
       splitter.addWidget (self.tree)
       splitter.addWidget (self.tab)
       self.setCentralWidget (splitter)
 
       self.displayDir (self.tree, ".")
 
    def displayDir (self, target, path) :
        localDir = QDir (path) 
        directory = QDir (localDir.absolutePath ())
        item = QTreeWidgetItem (target)
        item.setText (0, directory.dirName ())
        item.setToolTip (0, directory.absolutePath ())
        item.setData (0, Qt.UserRole, directory.absolutePath ())
        item.setForeground (0, QColor ("red"))
 
        infoList = directory.entryInfoList (QDir.Files | QDir.Dirs |
                                            QDir.NoDotAndDotDot)
        for info in infoList :
            if info.isDir () :
               self.displayDir (item, info.filePath ()) 
            else :
               node = QTreeWidgetItem (item)
               node.setText (0, info.fileName ())
               node.setToolTip (0, info.filePath ())
               node.setData (0, Qt.UserRole, info.filePath ())
               node.setForeground (0, QColor ("blue"))
 
    def itemClick (self, item, column) :
        path = variant_to_str (item.data (0, Qt.UserRole))
        info = QFileInfo (path)
        ext = "." + info.completeSuffix ()
        widget = None

        if ext in [ ".h", ".cpp" ] :
           widget = QTextEdit ()
           f = QFile (path)
           if f.open (QFile.ReadOnly) :
              data = bytes_to_str (f.readAll ())
              widget.setText (data)

        if widget != None :
           self.tab.addTab (widget, info.fileName ())
 
if __name__ == "__main__" : 
   app = QApplication (sys.argv)
   win = Window ()
   win.show ()
   app.exec_ ()
</code>

{{file_tree.png}}