Add loaded state

src/qt/main.qml

@@ -57,6 +57,7 @@ ApplicationWindow {
     MainForm {
         anchors.fill: parent
         openButton.onClicked: fileDialog.open()
+        openButton.text: oboy.loaded ? "Loaded" : "Open ROM"
     }
 
     MessageDialog {

src/qt/oboy.cpp

@@ -62,7 +62,13 @@ bool OBoy::load(const QString &path)
 
     ocaml_path = caml_copy_string_of_os(ba.data());
 
-    const bool success = Bool_val(caml_callback(*closure_f, ocaml_path));
+    _loaded = Bool_val(caml_callback(*closure_f, ocaml_path));
+    this->loadedChanged(_loaded);
     CAMLdrop;
-    return success;
+    return _loaded;
+}
+
+bool OBoy::loaded() const
+{
+    return _loaded;
 }

src/qt/oboy.h

@@ -7,10 +7,18 @@ class OBoy : public QObject
     Q_OBJECT
     Q_PROPERTY(QString name READ name CONSTANT)
     Q_PROPERTY(QString version READ version CONSTANT)
+    Q_PROPERTY(bool loaded READ loaded NOTIFY loadedChanged)
 public:
     explicit OBoy(QObject *parent = nullptr);
 
     QString name() const;
     QString version() const;
+    bool loaded() const;
     Q_INVOKABLE bool load(const QString &path);
+
+signals:
+    void loadedChanged(bool loaded);
+
+private:
+    bool _loaded = false;
 };