list_dialog.py

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from python_qt_binding.QtCore import Qt
from python_qt_binding.QtGui import QColor
from python_qt_binding.QtWidgets import QDialog, QDialogButtonBox, QGroupBox, QHBoxLayout, QListWidget, QListWidgetItem, QPushButton, QVBoxLayout, QWidget
 
 
class ListDialog(QDialog):
 
    def __init__(self, title, items, parent):
        super(ListDialog, self).__init__(parent)
 
        self._layout = QVBoxLayout()
        self._view_box = QGroupBox("Optional topics")
        self._view_box_layout = QVBoxLayout(self._view_box)
        self._list_widget = QListWidget()
        self._view_box_layout.addWidget(self._list_widget)
        self._button_box = QDialogButtonBox(QDialogButtonBox.Save | QDialogButtonBox.Close)
        self._button_box.accepted.connect(self.save)
        self._button_box.rejected.connect(self.reject)
 
        self.setWindowTitle(title)
 
        self.create_list_widget(items)
 
        self._layout.addWidget(self._view_box)
        self._layout.addWidget(self._button_box)
        self.setLayout(self._layout)
 
        # createConnections
        self._list_widget.itemChanged.connect(self.highlight_checked)
 
        self.selected_items = []
 
    def create_list_widget(self, items):
        for item in items:
            w_item = QListWidgetItem()
            w_item.setText(item[0])
            w_item.setFlags(w_item.flags() | Qt.ItemIsUserCheckable)
            w_item.setCheckState(Qt.Checked if item[1] else Qt.Unchecked)
            self._list_widget.addItem(w_item)
        self._list_widget.setMinimumWidth(self._list_widget.sizeHintForColumn(0) + 5)
 
    @staticmethod
    def highlight_checked(item):
        if item.checkState() == Qt.Checked:
            item.setBackground(QColor("#ffffb2"))
        else:
            item.setBackground(QColor("#ffffff"))
 
    def save(self):
        self.selected_items = []
        for i in range(len(self._list_widget)):
            item = self._list_widget.item(i)
            if item.checkState() == Qt.Checked:
                self.selected_items.append(item.text())
 
        self.accept()
 
    def exec_(self):
        error_code = super(ListDialog, self).exec_()
        return self.selected_items, error_code