Jan-18-2019, 03:52 PM
Recommended approach for cell validation on dynamic table.
The scenario: I have a QDialog where based on different dropdown selections 1 or more tables are dynamically added. Because tables are dynamically added, the standard cell clicked signal is not enough. It only provides the row and column, and I need to know which table was clicked in addition to the row and column. More specifically, I have 2 columns with integer values. When a cell is changed in one of the columns, they must be within a valid range, and the value of the cell in the 2nd column must be >= value of the cell in the first column.
I'm fairly new to Python, but my thinking is that I need to create a class that extends the QTableWidgetItem with the additional information I need and sends a custom signal, which I can then wire up to a slot within the dialog. I've tried several variations of the following code, but can't get things quite right:
Am I on the right path? Any guidance is greatly appreciated.
The scenario: I have a QDialog where based on different dropdown selections 1 or more tables are dynamically added. Because tables are dynamically added, the standard cell clicked signal is not enough. It only provides the row and column, and I need to know which table was clicked in addition to the row and column. More specifically, I have 2 columns with integer values. When a cell is changed in one of the columns, they must be within a valid range, and the value of the cell in the 2nd column must be >= value of the cell in the first column.
I'm fairly new to Python, but my thinking is that I need to create a class that extends the QTableWidgetItem with the additional information I need and sends a custom signal, which I can then wire up to a slot within the dialog. I've tried several variations of the following code, but can't get things quite right:
class SmartCell(QtCore.QObject): valueChanged = QtCore.pyqtSignal(str) # Signal to be emitted when value changes. def __init__(self, tbl, rowname, colname, value): QtGui.QTableWidgetItem.__init__(self) self.tbl_name = tbl self.row_name = rowname self.col_name = colname # self.setText(value) self.__value = value @property def value(self): return self.__value @value.setter def value(self, value): if self.__value != value: self.__value = value # self.setText(value) signal = self.tbl_name + ":" + self.row_name + ":" + self.col_name + ":" + self.text() self.valueChanged.emit(signal)and then in the dialog, after importing the SmartCell reference as sCell:
item = sCell(obj_name, f.part_name, "start_frame", str(f.start_frame)) item.valueChanged.connect(self.frame_cell_changed) tbl.setItem(rowcounter, 1, item) item = sCell(obj_name, f.part_name, "end_frame", str(f.end_frame)) item.valueChanged.connect(self.frame_cell_changed) tbl.setItem(rowcounter, 2, item)
Am I on the right path? Any guidance is greatly appreciated.