Support showing invalid entries in Freqman and allow minor edits

firmware/application/apps/ui_freqman.cpp

@@ -140,7 +140,7 @@ FrequencySaveView::FrequencySaveView(
 
     button_edit.on_select = [this, &nav](Button&) {
         temp_buffer_ = entry_.description;
-        text_prompt(nav_, temp_buffer_, 30, [this](std::string& new_desc) {
+        text_prompt(nav_, temp_buffer_, desc_edit_max, [this](std::string& new_desc) {
             entry_.description = new_desc;
             refresh_ui();
         });
@@ -189,7 +189,7 @@ FrequencyLoadView::FrequencyLoadView(
 /* FrequencyManagerView **********************************/
 
 void FrequencyManagerView::on_edit_freq() {
-    // TODO: range edit support?
+    // TODO: range edit support.
     auto freq_edit_view = nav_.push<FrequencyKeypadView>(current_entry().frequency_a);
     freq_edit_view->on_changed = [this](rf::Frequency f) {
         auto entry = current_entry();
@@ -201,7 +201,7 @@ void FrequencyManagerView::on_edit_freq() {
 
 void FrequencyManagerView::on_edit_desc() {
     temp_buffer_ = current_entry().description;
-    text_prompt(nav_, temp_buffer_, 28, [this](std::string& new_desc) {
+    text_prompt(nav_, temp_buffer_, desc_edit_max, [this](std::string& new_desc) {
         auto entry = current_entry();
         entry.description = std::move(new_desc);
         db_.replace_entry(current_index(), entry);
@@ -211,7 +211,7 @@ void FrequencyManagerView::on_edit_desc() {
 
 void FrequencyManagerView::on_add_category() {
     temp_buffer_.clear();
-    text_prompt(nav_, temp_buffer_, 12, [this](std::string& new_name) {
+    text_prompt(nav_, temp_buffer_, 20, [this](std::string& new_name) {
         if (!new_name.empty()) {
             create_freqman_file(new_name);
             refresh_categories();
@@ -249,7 +249,7 @@ void FrequencyManagerView::on_del_entry() {
         return;
 
     nav_.push<ModalMessageView>(
-        "Delete", "Delete" + pretty_string(current_entry(), 23) + "\nAre you sure?", YESNO,
+        "Delete", "Delete " + trim(pretty_string(current_entry(), 23)) + "\nAre you sure?", YESNO,
         [this](bool choice) {
             if (choice) {
                 db_.delete_entry(current_index());

firmware/application/apps/ui_freqman.hpp

@@ -79,6 +79,7 @@ class FreqManBaseView : public View {
    protected:
     /* Static so selected category is persisted across UI instances. */
     static size_t current_category_index;
+    static constexpr size_t desc_edit_max = 0x80;
 };
 
 // TODO: support for new category.

firmware/application/freqman_db.cpp

@@ -200,9 +200,12 @@ std::string pretty_string(const freqman_entry& entry, size_t max_length) {
                   to_string_dec_uint(entry.frequency_b / 1'000'000) + "M: " + entry.description;
             break;
         case freqman_type::HamRadio:
-            str = "" + to_string_dec_uint(entry.frequency_a / 1'000'000) + "M," +
+            str = "R:" + to_string_dec_uint(entry.frequency_a / 1'000'000) + "M,T:" +
                   to_string_dec_uint(entry.frequency_b / 1'000'000) + "M: " + entry.description;
             break;
+        case freqman_type::Raw:
+            str = entry.description;
+            break;
         default:
             str = "UNK:" + entry.description;
             break;
@@ -244,8 +247,10 @@ std::string to_freqman_string(const freqman_entry& entry) {
             if (is_valid(entry.tone))
                 append_field("c", tonekey::tone_key_value_string(entry.tone));
             break;
+        case freqman_type::Raw:
+            return entry.description;
         default:
-            return {};  // TODO: Comment type with description?
+            return {};
     };
 
     if (is_valid(entry.modulation) && entry.modulation < freqman_modulations.size()) {
@@ -429,6 +434,11 @@ freqman_entry FreqmanDB::operator[](FileWrapper::Line line) const {
         freqman_entry entry;
         if (parse_freqman_entry(*line_text, entry))
             return entry;
+        else {
+            entry.type = freqman_type::Raw;
+            entry.description = trim(*line_text);
+            return entry;
+        }
     }
 
     return {};
@@ -444,7 +454,7 @@ void FreqmanDB::insert_entry(const freqman_entry& entry, FileWrapper::Line line)
 void FreqmanDB::replace_entry(FileWrapper::Line line, const freqman_entry& entry) {
     auto range = wrapper_->line_range(line);
     if (!range)
-        return;  // TODO: Message?
+        return;
 
     // Don't overwrite the '\n'.
     range->end--;

firmware/application/freqman_db.hpp

@@ -59,6 +59,7 @@ enum class freqman_type : uint8_t {
     Single,    // f=
     Range,     // a=,b=
     HamRadio,  // r=,t=
+    Raw,       // line content in description
     Unknown,
 };
 
@@ -140,9 +141,9 @@ enum class freqman_type : uint8_t {
 
 /* Freqman Entry *******************************/
 struct freqman_entry {
-    int64_t frequency_a{0};      // 'f=freq' or 'a=freq_start' or 'r=recv_freq'
-    int64_t frequency_b{0};      // 'b=freq_end' or 't=tx_freq'
-    std::string description{0};  // 'd=desc'
+    int64_t frequency_a{0};     // 'f=freq' or 'a=freq_start' or 'r=recv_freq'
+    int64_t frequency_b{0};     // 'b=freq_end' or 't=tx_freq'
+    std::string description{};  // 'd=desc'
     freqman_type type{freqman_type::Unknown};
     freqman_index_t modulation{freqman_invalid_index};
     freqman_index_t bandwidth{freqman_invalid_index};

firmware/application/ui/ui_freqlist.cpp

@@ -56,24 +56,28 @@ void FreqManUIList::paint(Painter& painter) {
         auto text = std::string{};
         auto index = start_index_ + offset;
         auto line_position = rect.location() + Point{4, 1 + (int)offset * char_height};
-
-        // Highlight the selected item.
-        auto style = (offset == selected_index_) ? &Styles::bg_white : base_style;
+        auto is_selected = offset == selected_index_;
+        auto style = base_style;
 
         if (index < db_->entry_count()) {
             auto entry = (*db_)[index];
             // db_ is directly backed by a file, so invalid lines cannot be
-            // pre-filtered. Just show an empty 'slot' in this case.
+            // pre-filtered. Show an empty entry if 'Unknown'.
             if (entry.type != freqman_type::Unknown)
                 text = pretty_string(entry, line_max_length);
+
+            // Otherwise, if 'Raw' indicate an invalid entry by color.
+            if (entry.type == freqman_type::Raw)
+                style = &Styles::light_grey;
         }
 
         // Pad right with ' ' so trailing chars are cleaned up.
         // draw_glyph has less flicker than fill_rect when drawing.
         if (text.length() < line_max_length)
             text.resize(line_max_length, ' ');
 
-        painter.draw_string(line_position, *style, text);
+        painter.draw_string(
+            line_position, (is_selected ? style->invert() : *style), text);
     }
 
     // Draw a bounding rectangle when focused.

firmware/test/application/test_string_format.cpp

@@ -47,3 +47,7 @@ TEST_CASE("trim removes whitespace.") {
 TEST_CASE("trim returns empty for only whitespace.") {
     CHECK(trim("  \n").empty());
 }
+
+TEST_CASE("trim empty returns empty.") {
+    CHECK(trim("").empty());
+}