Start of the icon editor

src/bedit_gui/commands/change_icon_command.py

@@ -0,0 +1,23 @@
+from __future__ import annotations
+
+from copy import deepcopy
+
+from PySide6.QtGui import QUndoCommand
+
+from bedit_core.models import ComponentID
+from bedit_gui.models import Icon
+
+
+class ChangeIconCommand(QUndoCommand):
+    def __init__(self, document: object, component_id: ComponentID, icon: Icon) -> None:
+        super().__init__("Change icon")
+        self.document = document
+        self.component_id = component_id
+        self.old_icon = document.stored_component_icon(component_id)
+        self.new_icon = deepcopy(icon)
+
+    def redo(self) -> None:
+        self.document._set_component_icon(self.component_id, self.new_icon)
+
+    def undo(self) -> None:
+        self.document._set_component_icon(self.component_id, self.old_icon)