combobox.py

# Copyright (c) <2015-Present> Tzutalin
# Copyright (C) 2013  MIT, Computer Science and Artificial Intelligence Laboratory. Bryan Russell, Antonio Torralba,
# William T. Freeman. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
# associated documentation files (the "Software"), to deal in the Software without restriction, including without
# limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
# Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in all copies or substantial portions of
# the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
# NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
# SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
# CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

import sys
try:
    from PyQt5.QtWidgets import QWidget, QHBoxLayout, QComboBox
except ImportError:
    # needed for py3+qt4
    # Ref:
    # http://pyqt.sourceforge.net/Docs/PyQt4/incompatible_apis.html
    # http://stackoverflow.com/questions/21217399/pyqt4-qtcore-qvariant-object-instead-of-a-string
    if sys.version_info.major >= 3:
        import sip
        sip.setapi('QVariant', 2)
    from PyQt4.QtGui import QWidget, QHBoxLayout, QComboBox


class ComboBox(QWidget):
    def __init__(self, parent=None, items=[]):
        super(ComboBox, self).__init__(parent)

        layout = QHBoxLayout()
        self.cb = QComboBox()
        self.items = items
        self.cb.addItems(self.items)

        self.cb.currentIndexChanged.connect(parent.comboSelectionChanged)

        layout.addWidget(self.cb)
        self.setLayout(layout)

    def update_items(self, items):
        self.items = items

        self.cb.clear()
        self.cb.addItems(self.items)