Rename display_error() -> display_modal(), add title argument.

firmware/application/analog_audio_app.cpp

@@ -140,7 +140,7 @@ AnalogAudioView::AnalogAudioView(
 	};
 
 	record_view.on_error = [&nav](std::string message) {
-		nav.display_error(message);
+		nav.display_modal("Error", message);
 	};
 
 	audio::output::start();

firmware/application/capture_app.cpp

@@ -71,7 +71,7 @@ CaptureAppView::CaptureAppView(NavigationView& nav) {
 
 	record_view.set_sampling_rate(sampling_rate / 8);
 	record_view.on_error = [&nav](std::string message) {
-		nav.display_error(message);
+		nav.display_modal("Error", message);
 	};
 }
 

firmware/application/ui_navigation.cpp

@@ -131,10 +131,13 @@ void NavigationView::pop() {
 	}
 }
 
-void NavigationView::display_error(const std::string& message) {
+void NavigationView::display_modal(
+	const std::string& title,
+	const std::string& message
+) {
 	/* If a modal view is already visible, don't display another */
 	if( !modal_view ) {
-		modal_view = push<ModalMessageView>(message);
+		modal_view = push<ModalMessageView>(title, message);
 	}
 }
 
@@ -290,7 +293,12 @@ void NotImplementedView::focus() {
 
 /* ModalMessageView ******************************************************/
 
-ModalMessageView::ModalMessageView(NavigationView& nav, std::string message) {
+ModalMessageView::ModalMessageView(
+	NavigationView& nav,
+	const std::string& title,
+	const std::string& message
+) : title_ { title }
+{
 	button_done.on_select = [&nav](Button&){
 		nav.pop();
 	};

firmware/application/ui_navigation.hpp

@@ -102,7 +102,7 @@ public:
 
 	void pop();
 
-	void display_error(const std::string& message);
+	void display_modal(const std::string& title, const std::string& message);
 
 	void focus() override;
 
@@ -210,11 +210,19 @@ private:
 
 class ModalMessageView : public View {
 public:
-	ModalMessageView(NavigationView& nav, std::string message);
+	ModalMessageView(
+		NavigationView& nav,
+		const std::string& title,
+		const std::string& message
+	);
 
 	void focus() override;
 
+	std::string title() const override { return title_; };
+
 private:
+	const std::string title_;
+
 	Text text_message {
 		{ 0 * 8, 7 * 16, 30 * 8, 16 },
 		""