# -*- coding: utf-8 -*-

# Allow access to command-line arguments

import sys

# Import the core and GUI elements of Qt
from PySide.QtCore import *
from PySide.QtGui import *

# Create the QApplication object
qt_app = QApplication(sys.argv)

#Hier wird das Hauptfenster erzeugt und alle Signal-/Slot Verbindungen werden aufgebaut.
class Mainwindow(QWidget):
    def __init__(self):

        # Initialize the object as a QWidget and
        # set its title and minimum width
        QWidget.__init__(self)
        self.setWindowTitle('Einfache Applikation')
        self.setMinimumWidth(300)
        self.setMinimumHeight(200)

        # Erstellung einer H-Box welche die hinzugefuegten Widgets nebeneinander anordnet
        self.hboxlayout = QHBoxLayout()

        self.listWidget = QListWidget()
        self.hboxlayout.addWidget(self.listWidget)

        self.vboxlayout=QVBoxLayout()
        self.aButton=QPushButton('ADD', self)
        self.vboxlayout.addWidget(self.aButton)
        self.dButton=QPushButton('Delete', self)
        self.vboxlayout.addWidget(self.dButton)
        self.cButton=QPushButton('Clear', self)
        self.vboxlayout.addWidget(self.cButton)
        self.vboxlayout.addStretch()
        self.hboxlayout.addLayout(self.vboxlayout)

        self.aButton.clicked.connect(self.on_aButton_clicked)
        self.dButton.clicked.connect(self.on_dButton_clicked)
        self.cButton.clicked.connect(self.on_cButton_clicked)

        self.setLayout(self.hboxlayout)

    #In diesem Slot wird das "clicked"-Signal des Buttons verarbeitet
    @Slot()
    def on_aButton_clicked(self):
        nText=QInputDialog.getText(self, "Eingabe", "text")
        if not (nText==""):
            item=QListWidgetItem(self.listWidget)
            item.setText(nText[0])
    def on_dButton_clicked(self):
        for item in self.listWidget.selectedItems():
            self.listWidget.takeItem(self.listWidget.row(item))

    def on_cButton_clicked(self):
        self.listWidget.clear()

    def run(self):
        # Show the form
        self.show()
        # Run the qt application
        qt_app.exec_()

def main():
    # Create an instance of the application window and run it
    app = Mainwindow()
    app.run()

if __name__ == '__main__':
    main()