Código fuente para NiBAx.core.gui.SearchableQComboBox

# This Python file uses the following encoding: utf-8
"""
Author: Ashish Singh
contact: software@cbica.upenn.edu
Copyright (c) 2018 University of Pennsylvania. All rights reserved.
Use of this source code is governed by license located in license file: https://github.com/CBICA/BrainChart/blob/main/LICENSE
"""
from PyQt5 import QtCore, QtWidgets

class SearchableQComboBox(QtWidgets.QComboBox):
    def __init__(self, parent=None):
        super(SearchableQComboBox, self).__init__(parent)

        self.setFocusPolicy(QtCore.Qt.StrongFocus)
        self.setEditable(True)

        # add a filter model to filter matching items
        self.pFilterModel = QtCore.QSortFilterProxyModel(self)
        self.pFilterModel.setFilterCaseSensitivity(QtCore.Qt.CaseInsensitive)
        self.pFilterModel.setSourceModel(self.model())

        # add a completer, which uses the filter model
        self.completer = QtWidgets.QCompleter(self.pFilterModel, self)
        # always show all (filtered) completions
        self.completer.setCompletionMode(QtWidgets.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(SearchableQComboBox, 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(SearchableQComboBox, self).setModelColumn(column)