Multi QCompleter

multi_qcompleter.py

import re
import sys
from PySide import QtGui

DELIMITERS = r'[,_\s]'


class MultiCompleter(QtGui.QCompleter):

    def pathFromIndex(self, index):
        path = super(MultiCompleter, self).pathFromIndex(index)
        text = self.widget().text()
        split = re.split(DELIMITERS, text)[-1]
        if len(split) == len(text):
            return path
        if len(split):
            string_without_split = text[:-len(split)]
        else:
            string_without_split = text
        return string_without_split + path

    def splitPath(self, path):
        split = re.split(DELIMITERS, path)[-1]
        return [split]


def updateFields(widget, text):
    fields = re.split(DELIMITERS, text)
    widget.clear()
    widget.addItems(fields)

if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)

    d = QtGui.QDialog()
    d.setWindowTitle("Naming Editor")
    layout = QtGui.QVBoxLayout()

    tokens = MultiCompleter(["description", "side", "type"])
    rule = QtGui.QLineEdit()
    rule.setCompleter(tokens)
    layout.addWidget(rule)

    fields = QtGui.QListWidget()
    fields.setEnabled(False)
    rule.textChanged.connect(lambda x: updateFields(fields, x))
    layout.addWidget(fields)

    d.setLayout(layout)
    d.show()

    sys.exit(app.exec_())