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Diffstat (limited to 'examples/widgets/itemviews/editabletreemodel/mainwindow.py')
| -rw-r--r-- | examples/widgets/itemviews/editabletreemodel/mainwindow.py | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/examples/widgets/itemviews/editabletreemodel/mainwindow.py b/examples/widgets/itemviews/editabletreemodel/mainwindow.py new file mode 100644 index 000000000..1489bf28b --- /dev/null +++ b/examples/widgets/itemviews/editabletreemodel/mainwindow.py @@ -0,0 +1,163 @@ +# Copyright (C) 2022 The Qt Company Ltd. +# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +import sys +from pathlib import Path + +from PySide6.QtCore import (QAbstractItemModel, QItemSelectionModel, + QModelIndex, Qt, Slot) +from PySide6.QtWidgets import (QAbstractItemView, QMainWindow, QTreeView, + QWidget) +from PySide6.QtTest import QAbstractItemModelTester + +from treemodel import TreeModel + + +class MainWindow(QMainWindow): + def __init__(self, parent: QWidget = None): + super().__init__(parent) + self.resize(573, 468) + + self.view = QTreeView() + self.view.setAlternatingRowColors(True) + self.view.setSelectionBehavior(QAbstractItemView.SelectItems) + self.view.setHorizontalScrollMode(QAbstractItemView.ScrollPerPixel) + self.view.setAnimated(False) + self.view.setAllColumnsShowFocus(True) + self.setCentralWidget(self.view) + + menubar = self.menuBar() + file_menu = menubar.addMenu("&File") + self.exit_action = file_menu.addAction("E&xit") + self.exit_action.setShortcut("Ctrl+Q") + self.exit_action.triggered.connect(self.close) + + actions_menu = menubar.addMenu("&Actions") + actions_menu.triggered.connect(self.update_actions) + self.insert_row_action = actions_menu.addAction("Insert Row") + self.insert_row_action.setShortcut("Ctrl+I, R") + self.insert_row_action.triggered.connect(self.insert_row) + self.insert_column_action = actions_menu.addAction("Insert Column") + self.insert_column_action.setShortcut("Ctrl+I, C") + self.insert_column_action.triggered.connect(self.insert_column) + actions_menu.addSeparator() + self.remove_row_action = actions_menu.addAction("Remove Row") + self.remove_row_action.setShortcut("Ctrl+R, R") + self.remove_row_action.triggered.connect(self.remove_row) + self.remove_column_action = actions_menu.addAction("Remove Column") + self.remove_column_action.setShortcut("Ctrl+R, C") + self.remove_column_action.triggered.connect(self.remove_column) + actions_menu.addSeparator() + self.insert_child_action = actions_menu.addAction("Insert Child") + self.insert_child_action.setShortcut("Ctrl+N") + self.insert_child_action.triggered.connect(self.insert_child) + help_menu = menubar.addMenu("&Help") + about_qt_action = help_menu.addAction("About Qt", qApp.aboutQt) # noqa: F821 + about_qt_action.setShortcut("F1") + + self.setWindowTitle("Editable Tree Model") + + headers = ["Title", "Description"] + + file = Path(__file__).parent / "default.txt" + self.model = TreeModel(headers, file.read_text(), self) + + if "-t" in sys.argv: + QAbstractItemModelTester(self.model, self) + self.view.setModel(self.model) + self.view.expandAll() + + for column in range(self.model.columnCount()): + self.view.resizeColumnToContents(column) + + selection_model = self.view.selectionModel() + selection_model.selectionChanged.connect(self.update_actions) + + self.update_actions() + + @Slot() + def insert_child(self) -> None: + selection_model = self.view.selectionModel() + index: QModelIndex = selection_model.currentIndex() + model: QAbstractItemModel = self.view.model() + + if model.columnCount(index) == 0: + if not model.insertColumn(0, index): + return + + if not model.insertRow(0, index): + return + + for column in range(model.columnCount(index)): + child: QModelIndex = model.index(0, column, index) + model.setData(child, "[No data]", Qt.EditRole) + if not model.headerData(column, Qt.Horizontal): + model.setHeaderData(column, Qt.Horizontal, "[No header]", + Qt.EditRole) + + selection_model.setCurrentIndex( + model.index(0, 0, index), QItemSelectionModel.ClearAndSelect + ) + self.update_actions() + + @Slot() + def insert_column(self) -> None: + model: QAbstractItemModel = self.view.model() + column: int = self.view.selectionModel().currentIndex().column() + + changed: bool = model.insertColumn(column + 1) + if changed: + model.setHeaderData(column + 1, Qt.Horizontal, "[No header]", + Qt.EditRole) + + self.update_actions() + + @Slot() + def insert_row(self) -> None: + index: QModelIndex = self.view.selectionModel().currentIndex() + model: QAbstractItemModel = self.view.model() + parent: QModelIndex = index.parent() + + if not model.insertRow(index.row() + 1, parent): + return + + self.update_actions() + + for column in range(model.columnCount(parent)): + child: QModelIndex = model.index(index.row() + 1, column, parent) + model.setData(child, "[No data]", Qt.EditRole) + + @Slot() + def remove_column(self) -> None: + model: QAbstractItemModel = self.view.model() + column: int = self.view.selectionModel().currentIndex().column() + + if model.removeColumn(column): + self.update_actions() + + @Slot() + def remove_row(self) -> None: + index: QModelIndex = self.view.selectionModel().currentIndex() + model: QAbstractItemModel = self.view.model() + + if model.removeRow(index.row(), index.parent()): + self.update_actions() + + @Slot() + def update_actions(self) -> None: + selection_model = self.view.selectionModel() + has_selection: bool = not selection_model.selection().isEmpty() + self.remove_row_action.setEnabled(has_selection) + self.remove_column_action.setEnabled(has_selection) + + current_index = selection_model.currentIndex() + has_current: bool = current_index.isValid() + self.insert_row_action.setEnabled(has_current) + self.insert_column_action.setEnabled(has_current) + + if has_current: + self.view.closePersistentEditor(current_index) + msg = f"Position: ({current_index.row()},{current_index.column()})" + if not current_index.parent().isValid(): + msg += " in top level" + self.statusBar().showMessage(msg) |