Add clear artboards button to undo history (#1643)

editor/src/messages/portfolio/document/document_message.rs

@@ -42,6 +42,7 @@ pub enum DocumentMessage {
 	BackupDocument {
 		network: NodeNetwork,
 	},
+	ClearArtboards,
 	ClearLayersPanel,
 	CommitTransaction,
 	CreateEmptyFolder {

editor/src/messages/portfolio/document/document_message_handler.rs

@@ -346,6 +346,10 @@ impl MessageHandler<DocumentMessage, DocumentInputs<'_>> for DocumentMessageHand
 				}
 			}
 			BackupDocument { network } => self.backup_with_document(network, responses),
+			ClearArtboards => {
+				self.backup(responses);
+				responses.add(GraphOperationMessage::ClearArtboards);
+			}
 			ClearLayersPanel => {
 				// Send an empty layer list
 				let data_buffer: RawBuffer = Self::default().serialize_root();

editor/src/messages/portfolio/menu_bar/menu_bar_message_handler.rs

@@ -254,7 +254,7 @@ impl LayoutHolder for MenuBarMessageHandler {
 				no_active_document,
 				MenuBarEntryChildren(vec![vec![MenuBarEntry {
 					label: "Clear Artboards".into(),
-					action: MenuBarEntry::create_action(|_| GraphOperationMessage::ClearArtboards.into()),
+					action: MenuBarEntry::create_action(|_| DocumentMessage::ClearArtboards.into()),
 					disabled: no_active_document,
 					..MenuBarEntry::default()
 				}]]),