I need a QCombox which Items are filtered based on the text input. If I set the QCombobox editable, the user can insert text and the QCompleter is automatically created. But the items are not filtered and I don’t want the user to add new Items.
Is there any possibility to add this functionality to the QCombobox?
Try this code, is something i used in a project of mine
import sys
from PyQt4.QtGui import QComboBox, QApplication, QCompleter, QSortFilterProxyModel, QStandardItemModel, QStandardItem
from PyQt4.QtCore import Qt
class ExtendedCombo( QComboBox ):
def __init__( self, parent = None):
super( ExtendedCombo, self ).__init__( parent )
self.setFocusPolicy( Qt.StrongFocus )
self.setEditable( True )
self.completer = QCompleter( self )
# always show all completions
self.completer.setCompletionMode( QCompleter.UnfilteredPopupCompletion )
self.pFilterModel = QSortFilterProxyModel( self )
self.pFilterModel.setFilterCaseSensitivity( Qt.CaseInsensitive )
self.completer.setPopup( self.view() )
self.setCompleter( self.completer )
self.lineEdit().textEdited[unicode].connect( self.pFilterModel.setFilterFixedString )
self.completer.activated.connect(self.setTextIfCompleterIsClicked)
def setModel( self, model ):
super(ExtendedCombo, self).setModel( model )
self.pFilterModel.setSourceModel( model )
self.completer.setModel(self.pFilterModel)
def setModelColumn( self, column ):
self.completer.setCompletionColumn( column )
self.pFilterModel.setFilterKeyColumn( column )
super(ExtendedCombo, self).setModelColumn( column )
def view( self ):
return self.completer.popup()
def index( self ):
return self.currentIndex()
def setTextIfCompleterIsClicked(self, text):
if text:
index = self.findText(text)
self.setCurrentIndex(index)
if __name__ == "__main__":
app = QApplication(sys.argv)
model = QStandardItemModel()
for i,word in enumerate( ['hola', 'adios', 'hello', 'good bye'] ):
item = QStandardItem(word)
model.setItem(i, 0, item)
combo = ExtendedCombo()
combo.setModel(model)
combo.setModelColumn(0)
combo.show()
sys.exit(app.exec_())
searching inside the combobox. Finally a good solution. Thank you guys!! It helped me a lot.
And here is the adjusted code to PyQt5:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import Qt, QSortFilterProxyModel
from PyQt5.QtWidgets import QCompleter, QComboBox
class ExtendedComboBox(QComboBox):
def __init__(self, parent=None):
super(ExtendedComboBox, self).__init__(parent)
self.setFocusPolicy(Qt.StrongFocus)
self.setEditable(True)
# add a filter model to filter matching items
self.pFilterModel = QSortFilterProxyModel(self)
self.pFilterModel.setFilterCaseSensitivity(Qt.CaseInsensitive)
self.pFilterModel.setSourceModel(self.model())
# add a completer, which uses the filter model
self.completer = QCompleter(self.pFilterModel, self)
# always show all (filtered) completions
self.completer.setCompletionMode(QCompleter.UnfilteredPopupCompletion)
self.setCompleter(self.completer)
# connect signals
self.lineEdit().textEdited.connect(self.pFilterModel.setFilterFixedString)
self.completer.activated.connect(self.on_completer_activated)
# on selection of an item from the completer, select the corresponding item from combobox
def on_completer_activated(self, text):
if text:
index = self.findText(text)
self.setCurrentIndex(index)
self.activated[str].emit(self.itemText(index))
# on model change, update the models of the filter and completer as well
def setModel(self, model):
super(ExtendedComboBox, self).setModel(model)
self.pFilterModel.setSourceModel(model)
self.completer.setModel(self.pFilterModel)
# on model column change, update the model column of the filter and completer as well
def setModelColumn(self, column):
self.completer.setCompletionColumn(column)
self.pFilterModel.setFilterKeyColumn(column)
super(ExtendedComboBox, self).setModelColumn(column)
if __name__ == "__main__":
import sys
from PyQt5.QtWidgets import QApplication
from PyQt5.QtCore import QStringListModel
app = QApplication(sys.argv)
string_list = ['hola muchachos', 'adios amigos', 'hello world', 'good bye']
combo = ExtendedComboBox()
# either fill the standard model of the combobox
combo.addItems(string_list)
# or use another model
#combo.setModel(QStringListModel(string_list))
combo.resize(300, 40)
combo.show()
sys.exit(app.exec_())
Thanks for the nice answer, I had the same problem. It works nicely, but forces you to supply an external model, which is unnecessary. I extended the code to also work with the internal standard model already supplied by the combobox. Also some cleanup and documentation has been done...
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from PyQt4.QtCore import Qt
from PyQt4.QtGui import QCompleter, QComboBox, QSortFilterProxyModel
class ExtendedComboBox(QComboBox):
def __init__(self, parent=None):
super(ExtendedComboBox, self).__init__(parent)
self.setFocusPolicy(Qt.StrongFocus)
self.setEditable(True)
# add a filter model to filter matching items
self.pFilterModel = QSortFilterProxyModel(self)
self.pFilterModel.setFilterCaseSensitivity(Qt.CaseInsensitive)
self.pFilterModel.setSourceModel(self.model())
# add a completer, which uses the filter model
self.completer = QCompleter(self.pFilterModel, self)
# always show all (filtered) completions
self.completer.setCompletionMode(QCompleter.UnfilteredPopupCompletion)
self.setCompleter(self.completer)
# connect signals
self.lineEdit().textEdited[unicode].connect(self.pFilterModel.setFilterFixedString)
self.completer.activated.connect(self.on_completer_activated)
# on selection of an item from the completer, select the corresponding item from combobox
def on_completer_activated(self, text):
if text:
index = self.findText(text)
self.setCurrentIndex(index)
# on model change, update the models of the filter and completer as well
def setModel(self, model):
super(ExtendedComboBox, self).setModel(model)
self.pFilterModel.setSourceModel(model)
self.completer.setModel(self.pFilterModel)
# on model column change, update the model column of the filter and completer as well
def setModelColumn(self, column):
self.completer.setCompletionColumn(column)
self.pFilterModel.setFilterKeyColumn(column)
super(ExtendedComboBox, self).setModelColumn(column)
if __name__ == "__main__":
import sys
from PyQt4.QtGui import QStringListModel, QApplication
app = QApplication(sys.argv)
string_list = ['hola muchachos', 'adios amigos', 'hello world', 'good bye']
combo = ExtendedComboBox()
# either fill the standard model of the combobox
combo.addItems(string_list)
# or use another model
#combo.setModel(QStringListModel(string_list))
combo.resize(300, 40)
combo.show()
sys.exit(app.exec_())
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