item_delegates.py

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#!/usr/bin/env python

# Copyright (c) 2011, Dorian Scholz, TU Darmstadt
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from python_qt_binding.QtCore import QModelIndex
from python_qt_binding.QtWidgets import QDoubleSpinBox, QItemDelegate


class SpinBoxDelegate(QItemDelegate):

    def __init__(self, min_value=0, max_value=100, decimals=2, *args):
        self._min = min_value
        self._max = max_value
        self._decimals = decimals
        super(SpinBoxDelegate, self).__init__(*args)

    def createEditor(self, parent, option, index):
        editor = QDoubleSpinBox(parent)
        editor.setDecimals(self._decimals)
        editor.setMaximum(self._min)
        editor.setMaximum(self._max)
        return editor


class DelegateUtil(object):

    """
    Find out the hierarchy level of the selected item.
    see: http://stackoverflow.com/a/4208240/577001

    :type model_index: QModelIndex
    :rtype: int

    :author: Isaac Saito
    """
    @staticmethod
    def _get_hierarchy_level(model_index):
        hierarchyLevel = 1
        seek_root = model_index
        while(seek_root.parent() != QModelIndex()):
            seek_root = seek_root.parent()
            hierarchyLevel += 1
        return hierarchyLevel