from PyQt5.QtCore import Qt, QAbstractTableModel
import numpy as np

class TableModel(QAbstractTableModel):
    def __init__(self, data):
        super(TableModel, self).__init__()
        self._data = data

    def data(self, index, role):
        if role == Qt.DisplayRole:
            value = self._data.iloc[index.row(), index.column()]

            if isinstance(value, float):
                
                if np.isnan(value):
                    return "NaN"
                
                # Render float to 2 dp
                elif len(str(value).split(".")[1]) <= 3:
                    return "%.2f" % value
                else:
                    return "%.2e" % value

            return value

    def rowCount(self, index):
        # The length of the outer list.
        return self._data.shape[0]

    def columnCount(self, index):
        # The following takes the first sub-list, and returns
        # the length (only works if all rows are an equal length)
        return self._data.shape[1]

    def headerData(self, section, orientation, role):
        # section is the index of the column/row.
        if role == Qt.DisplayRole:
            if orientation == Qt.Horizontal:
                return str(self._data.columns[section])
            if orientation == Qt.Vertical:
                return str(self._data.index[section])