UI: Extract a Document class

src/dusk/ui/document.cpp

@@ -0,0 +1,71 @@
+#include "document.hpp"
+
+#include "aurora/rmlui.hpp"
+#include "ui.hpp"
+
+namespace dusk::ui {
+namespace {
+
+Rml::ElementDocument* load_document(const Rml::String& path) {
+    auto* context = aurora::rmlui::get_context();
+    if (context == nullptr) {
+        return nullptr;
+    }
+    return context->LoadDocument(path);
+}
+
+}  // namespace
+
+Document::Document(const Rml::String& path) : mDocument(load_document(path)) {
+    listen(Rml::EventId::Keydown, [this](Rml::Event& event) {
+        const auto cmd = map_nav_event(event);
+        if (cmd != NavCommand::None && handle_nav_command(event, cmd)) {
+            event.StopPropagation();
+        }
+    });
+}
+
+Document::~Document() {
+    mListeners.clear();
+    if (mDocument != nullptr) {
+        mDocument->Close();
+        mDocument = nullptr;
+    }
+}
+
+void Document::show() {
+    if (mDocument != nullptr) {
+        mDocument->Show();
+        focus();
+    }
+}
+
+void Document::hide() {
+    if (mDocument != nullptr) {
+        mDocument->Hide();
+    }
+}
+
+void Document::update() {}
+
+bool Document::focus() {
+    return false;
+}
+
+void Document::listen(Rml::Element* element, Rml::EventId event,
+    ScopedEventListener::Callback callback, bool capture) {
+    if (element == nullptr) {
+        element = mDocument;
+    }
+    if (element == nullptr || !callback) {
+        return;
+    }
+    mListeners.emplace_back(
+        std::make_unique<ScopedEventListener>(element, event, std::move(callback), capture));
+}
+
+bool Document::handle_nav_command(Rml::Event& event, NavCommand cmd) {
+    return false;
+}
+
+}  // namespace dusk::ui