Document handling

New/Open/Save/Save as and Undo/Redo

src/bedit_gui/controllers/undo_controller.py

@@ -0,0 +1,36 @@
+from PySide6.QtCore import QObject
+
+from bedit_gui.documents import Document
+from bedit_gui.views.main_window import MainWindow
+
+
+class UndoController(QObject):
+    def __init__(self, document: Document, window: MainWindow) -> None:
+        super().__init__(window)
+
+        self.document = document
+        self.window = window
+
+        undo_action = window.ui.actionUndo
+        redo_action = window.ui.actionRedo
+        undo_stack = document.undo_stack
+
+        undo_action.triggered.connect(undo_stack.undo)
+        redo_action.triggered.connect(undo_stack.redo)
+
+        undo_stack.canUndoChanged.connect(undo_action.setEnabled)
+        undo_stack.canRedoChanged.connect(redo_action.setEnabled)
+
+        undo_stack.undoTextChanged.connect(self._update_undo_text)
+        undo_stack.redoTextChanged.connect(self._update_redo_text)
+
+        undo_action.setEnabled(undo_stack.canUndo())
+        redo_action.setEnabled(undo_stack.canRedo())
+
+    def _update_undo_text(self, command: str) -> None:
+        text = f"Undo {command}" if command else "Undo"
+        self.window.ui.actionUndo.setText(text)
+
+    def _update_redo_text(self, command: str) -> None:
+        text = f"Redo {command}" if command else "Redo"
+        self.window.ui.actionRedo.setText(text)