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| import csv
import sys
from PySide6.QtCore import QAbstractTableModel, QModelIndex, Qt
from PySide6.QtTest import QAbstractItemModelTester
from PySide6.QtWidgets import (QApplication, QWidget,
QTableView, QVBoxLayout, QLineEdit, QPushButton)
class CsvModel(QAbstractTableModel):
def __init__(self, source, parent=None):
super().__init__(parent)
self.csv_data = []
with open(source) as csv_file:
reader = csv.reader(csv_file)
self.header = next(reader)
for row in reader:
self.csv_data.append(row)
def rowCount(self, parent=QModelIndex()):
return len(self.csv_data)
def columnCount(self, parent=QModelIndex()):
return 4
def data(self, index, role):
if role == Qt.ItemDataRole.DisplayRole:
return self.csv_data[index.row()][index.column()]
elif role == Qt.ItemDataRole.EditRole:
return self.csv_data[index.row()][index.column()]
# Editable models implement setData() and flags()
def setData(self, index, value, role):
if role == Qt.ItemDataRole.EditRole:
if self.csv_data[index.row()][index.column()] != value:
self.csv_data[index.row()][index.column()] = value
self.dataChanged.emit(index, index)
return True
return False
return False
def flags(self, index):
flags = Qt.ItemFlags.ItemIsSelectable | \
Qt.ItemFlags.ItemIsEnabled | \
Qt.ItemFlags.ItemIsEditable
return flags
def insertRows(self, row, count, parent=QModelIndex()):
if 0 <= row <= self.rowCount():
self.beginInsertRows(parent, row, row)
self.csv_data.insert(row, ['', '', '', ''])
self.endInsertRows()
return True
else:
return False
def removeRows(self, row, count, parent=QModelIndex()):
if 0 <= row < len(self.csv_data):
self.beginRemoveRows(parent, row, row)
self.csv_data[row:row + 1] = []
self.endRemoveRows()
return True
else:
return False
# QTableView can have a header
def headerData(self, section, orientation, role):
if orientation == Qt.Orientation.Horizontal:
if role == Qt.ItemDataRole.DisplayRole:
return self.header[section]
class Window(QWidget):
def __init__(self):
super().__init__()
layout = QVBoxLayout()
self.setLayout(layout)
self.model = CsvModel('data.csv')
QAbstractItemModelTester(self.model)
self.view = QTableView()
self.view.setModel(self.model)
self.model.rowsInserted.connect(self.on_rows_inserted)
self.view.resizeColumnsToContents()
self.fname_edit = QLineEdit()
self.lname_edit = QLineEdit()
self.prof_edit = QLineEdit()
self.submit_button = QPushButton('Submit')
self.submit_button.clicked.connect(self.on_submit)
self.submit_button = QPushButton('Submit')
self.submit_button.clicked.connect(self.on_submit)
self.insert_button = QPushButton('Insert new')
self.insert_button.clicked.connect(self.on_insert)
self.append_button = QPushButton('Append new')
self.append_button.clicked.connect(self.on_append)
self.remove_button = QPushButton('Remove current')
self.remove_button.clicked.connect(self.on_remove)
layout.addWidget(self.view)
layout.addWidget(self.insert_button)
layout.addWidget(self.append_button)
layout.addWidget(self.remove_button)
self.model.dataChanged.connect(self.on_data_changed)
def on_submit(self):
self.mapper.submit()
def on_insert(self):
row = self.view.selectionModel().currentIndex().row()
self.model.insertRows(row, 1)
def on_append(self):
print('in on append')
row = self.model.rowCount()
self.model.insertRows(row, 1)
index = self.model.index(row, 0)
self.view.scrollTo(index)
def on_remove(self):
index = self.view.currentIndex()
self.model.removeRows(index.row(), 1)
def on_rows_inserted(self, parent, first, last):
index = self.model.index(first, 0)
if index.isValid():
self.view.setCurrentIndex(index)
def on_data_changed(self, topLeft, bottomRight, roles):
print(f'Model changed, r: {topLeft.row()}, c: {topLeft.column()}')
data = topLeft.model().data(topLeft, Qt.ItemDataRole.DisplayRole)
print(f'Data: {data}')
if __name__ == '__main__':
app = QApplication(sys.argv)
main_window = Window()
main_window.show()
sys.exit(app.exec())
|