Split out string/number components

src/dusk/ui/number_button.cpp

@@ -0,0 +1,44 @@
+#include "number_button.hpp"
+
+#include <charconv>
+#include <fmt/format.h>
+
+namespace dusk::ui {
+
+NumberButton::NumberButton(Rml::Element* parent, Props props)
+    : BaseStringButton(parent, {.key = std::move(props.key), .type = "number"}),
+      mGetValue(std::move(props.getValue)), mSetValue(std::move(props.setValue)), mMin(props.min),
+      mMax(props.max), mStep(props.step) {}
+
+Rml::String NumberButton::format_value() {
+    return fmt::to_string(mGetValue());
+}
+
+void NumberButton::set_value(Rml::String value) {
+    if (!mSetValue) {
+        return;
+    }
+
+    int parsedValue = 0;
+    const char* begin = value.data();
+    const char* end = begin + value.size();
+    const auto result = std::from_chars(begin, end, parsedValue);
+    if (result.ec != std::errc() || result.ptr != end) {
+        return;
+    }
+
+    mSetValue(std::clamp(parsedValue, mMin, mMax));
+}
+
+bool NumberButton::handle_nav_command(NavCommand cmd) {
+    if (cmd == NavCommand::Left) {
+        mSetValue(std::clamp(mGetValue() - mStep, mMin, mMax));
+        return true;
+    } else if (cmd == NavCommand::Right) {
+        mSetValue(std::clamp(mGetValue() + mStep, mMin, mMax));
+        return true;
+    }
+    return BaseStringButton::handle_nav_command(cmd);
+}
+
+}  // namespace dusk::ui