Make 'Close All Documents' not confirm if all open documents are already saved (#1423)

* Adding blank PortfolioMessage to close docs

* Connected new PortfolioMessage to Menu Bar

* Adding functionality to new PortfolioMessage

* Amending outdated tests in color.rs

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

@@ -71,8 +71,8 @@ impl LayoutHolder for MenuBarMessageHandler {
 						},
 						MenuBarEntry {
 							label: "Close All".into(),
-							shortcut: action_keys!(DialogMessageDiscriminant::CloseAllDocumentsWithConfirmation),
-							action: MenuBarEntry::create_action(|_| DialogMessage::CloseAllDocumentsWithConfirmation.into()),
+							shortcut: action_keys!(PortfolioMessageDiscriminant::CloseAllDocumentsWithConfirmation),
+							action: MenuBarEntry::create_action(|_| PortfolioMessage::CloseAllDocumentsWithConfirmation.into()),
 							disabled: no_active_document,
 							..MenuBarEntry::default()
 						},

editor/src/messages/portfolio/portfolio_message.rs

@@ -31,6 +31,7 @@ pub enum PortfolioMessage {
 	},
 	CloseActiveDocumentWithConfirmation,
 	CloseAllDocuments,
+	CloseAllDocumentsWithConfirmation,
 	CloseDocument {
 		document_id: u64,
 	},

editor/src/messages/portfolio/portfolio_message_handler.rs

@@ -105,6 +105,13 @@ impl MessageHandler<PortfolioMessage, (&InputPreprocessorMessageHandler, &Prefer
 				responses.add(PortfolioMessage::DestroyAllDocuments);
 				responses.add(PortfolioMessage::UpdateOpenDocumentsList);
 			}
+			PortfolioMessage::CloseAllDocumentsWithConfirmation => {
+				if self.unsaved_document_names().is_empty() {
+					responses.add(PortfolioMessage::CloseAllDocuments)
+				} else {
+					responses.add(DialogMessage::CloseAllDocumentsWithConfirmation)
+				}
+			}
 			PortfolioMessage::CloseDocument { document_id } => {
 				// Is this the last document?
 				if self.documents.len() == 1 && self.document_ids[0] == document_id {
@@ -549,6 +556,7 @@ impl MessageHandler<PortfolioMessage, (&InputPreprocessorMessageHandler, &Prefer
 			GraphViewOverlayToggleDisabled,
 			CloseActiveDocumentWithConfirmation,
 			CloseAllDocuments,
+			CloseAllDocumentsWithConfirmation,
 			Import,
 			NextDocument,
 			OpenDocument,