RecentEntriesView: Generalize draw_header() implementations.

firmware/application/ais_app.cpp

@@ -185,30 +185,6 @@ void AISRecentEntry::update(const ais::Packet& packet) {
 
 namespace ui {
 
-static const std::array<std::pair<std::string, size_t>, 2> ais_columns { {
-	{ "MMSI", 9 },
-	{ "Name/Call", 20 },
-} };
-
-template<>
-void RecentEntriesView<AISRecentEntries>::draw_header(
-	const Rect& target_rect,
-	Painter& painter,
-	const Style& style
-) {
-	auto x = 0;
-	for(const auto& column : ais_columns) {
-		const auto width = column.second;
-		auto text = column.first;
-		if( width > text.length() ) {
-			text.append(width - text.length(), ' ');
-		}
-
-		painter.draw_string({ x, target_rect.pos.y }, style, text);
-		x += (width * 8) + 8;
-	}
-}
-
 template<>
 void RecentEntriesView<AISRecentEntries>::draw(
 	const Entry& entry,
@@ -303,6 +279,12 @@ AISAppView::AISAppView(NavigationView&) {
 		&recent_entry_detail_view,
 	} });
 
+	const std::array<RecentEntriesColumn, 2> columns { {
+		{ "MMSI", 9 },
+		{ "Name/Call", 20 },
+	} };
+	recent_entries_view.set_columns(columns);
+
 	recent_entry_detail_view.hidden(true);
 
 	target_frequency_ = initial_target_frequency;

firmware/application/ert_app.cpp

@@ -75,32 +75,6 @@ void ERTRecentEntry::update(const ert::Packet& packet) {
 
 namespace ui {
 
-static const std::array<std::pair<std::string, size_t>, 4> ert_columns { {
-	{ "ID", 10 },
-	{ "Tp", 2 },
-	{ "Consumpt", 10 },
-	{ "Cnt", 3 },
-} };
-
-template<>
-void RecentEntriesView<ERTRecentEntries>::draw_header(
-	const Rect& target_rect,
-	Painter& painter,
-	const Style& style
-) {
-	auto x = 0;
-	for(const auto& column : ert_columns) {
-		const auto width = column.second;
-		auto text = column.first;
-		if( width > text.length() ) {
-			text.append(width - text.length(), ' ');
-		}
-
-		painter.draw_string({ x, target_rect.pos.y }, style, text);
-		x += (width * 8) + 8;
-	}
-}
-
 template<>
 void RecentEntriesView<ERTRecentEntries>::draw(
 	const Entry& entry,
@@ -134,6 +108,14 @@ ERTAppView::ERTAppView(NavigationView&) {
 		&recent_entries_view,
 	} });
 
+	const std::array<RecentEntriesColumn, 4> columns { {
+		{ "ID", 10 },
+		{ "Tp", 2 },
+		{ "Consumpt", 10 },
+		{ "Cnt", 3 },
+	} };
+	recent_entries_view.set_columns(columns);
+
 	radio::enable({
 		initial_target_frequency,
 		sampling_rate,

firmware/application/recent_entries.hpp

@@ -118,6 +118,8 @@ private:
 
 namespace ui {
 
+using RecentEntriesColumn = std::pair<std::string, size_t>;
+
 template<class Entries>
 class RecentEntriesView : public View {
 public:
@@ -132,6 +134,16 @@ public:
 		set_focusable(true);
 	}
 
+	template<size_t ColumnCount>
+	void set_columns(
+		const std::array<RecentEntriesColumn, ColumnCount>& columns
+	) {
+		_columns.clear();
+		for(const auto& column : columns) {
+			_columns.emplace_back(column);
+		}
+	}
+
 	void paint(Painter& painter) override {
 		const auto r = screen_rect();
 		const auto& s = style();
@@ -192,6 +204,7 @@ public:
 
 private:
 	Entries& recent;
+	std::vector<std::pair<std::string, size_t>> _columns;
 	
 	using EntryKey = typename Entry::Key;
 	EntryKey selected_key = Entry::invalid_key;
@@ -226,7 +239,19 @@ private:
 		const Rect& target_rect,
 		Painter& painter,
 		const Style& style
-	);
+	) {
+		auto x = 0;
+		for(const auto& column : _columns) {
+			const auto width = column.second;
+			auto text = column.first;
+			if( width > text.length() ) {
+				text.append(width - text.length(), ' ');
+			}
+
+			painter.draw_string({ x, target_rect.pos.y }, style, text);
+			x += (width * 8) + 8;
+		}
+	}
 
 	void draw(
 		const Entry& entry,

firmware/application/tpms_app.cpp

@@ -95,34 +95,6 @@ void TPMSRecentEntry::update(const tpms::Reading& reading) {
 
 namespace ui {
 
-static const std::array<std::pair<std::string, size_t>, 6> tpms_columns { {
-	{ "Tp", 2 },
-	{ "ID", 8 },
-	{ "kPa", 3 },
-	{ "C", 3 },
-	{ "Cnt", 3 },
-	{ "Fl", 2 },
-} };
-
-template<>
-void RecentEntriesView<TPMSRecentEntries>::draw_header(
-	const Rect& target_rect,
-	Painter& painter,
-	const Style& style
-) {
-	auto x = 0;
-	for(const auto& column : tpms_columns) {
-		const auto width = column.second;
-		auto text = column.first;
-		if( width > text.length() ) {
-			text.append(width - text.length(), ' ');
-		}
-
-		painter.draw_string({ x, target_rect.pos.y }, style, text);
-		x += (width * 8) + 8;
-	}
-}
-
 template<>
 void RecentEntriesView<TPMSRecentEntries>::draw(
 	const Entry& entry,
@@ -176,6 +148,16 @@ TPMSAppView::TPMSAppView(NavigationView&) {
 		&recent_entries_view,
 	} });
 
+	const std::array<RecentEntriesColumn, 6> columns { {
+		{ "Tp", 2 },
+		{ "ID", 8 },
+		{ "kPa", 3 },
+		{ "C", 3 },
+		{ "Cnt", 3 },
+		{ "Fl", 2 },
+	} };
+	recent_entries_view.set_columns(columns);
+
 	radio::enable({
 		tuning_frequency(),
 		sampling_rate,