Moving items in the graph

src/bedit_gui/commands/graph_position_command.py

@@ -0,0 +1,21 @@
+from PySide6.QtGui import QUndoCommand
+
+from bedit_core.models import ComponentID
+
+
+class MoveGraphComponentCommand(QUndoCommand):
+    def __init__(self, document: object, graph_id: ComponentID, component_id: ComponentID, position: tuple[int, int]) -> None:
+        super().__init__("Move graph component")
+        self.document = document
+        self.graph_id = graph_id
+        self.component_id = component_id
+        database = document._graph_database(False)
+        graph = database.graphs.get(graph_id) if database is not None else None
+        self.old_position = graph.component_positions.get(component_id) if graph is not None else None
+        self.new_position = position
+
+    def redo(self) -> None:
+        self.document._set_graph_component_position(self.graph_id, self.component_id, self.new_position)
+
+    def undo(self) -> None:
+        self.document._set_graph_component_position(self.graph_id, self.component_id, self.old_position)