Make Duplicate Map/Layout more accessible

forms/mainwindow.ui

@@ -2906,6 +2906,7 @@
     <addaction name="action_NewMap"/>
     <addaction name="action_NewLayout"/>
     <addaction name="actionNew_Tileset"/>
+    <addaction name="actionDuplicate_Current_Map_Layout"/>
     <addaction name="separator"/>
     <addaction name="actionTileset_Editor"/>
     <addaction name="actionRegion_Map_Editor"/>
@@ -3278,6 +3279,11 @@
     <string>New Layout...</string>
    </property>
   </action>
+  <action name="actionDuplicate_Current_Map_Layout">
+   <property name="text">
+    <string>Duplicate Current Map/Layout...</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <customwidgets>

include/mainwindow.h

@@ -361,6 +361,7 @@ private:
     NewLayoutDialog* createNewLayoutDialog(const Layout *layoutToCopy = nullptr);
     void openNewLayoutDialog();
     void openDuplicateLayoutDialog(const QString &layoutId);
+    void openDuplicateMapOrLayoutDialog();
     void openNewMapGroupDialog();
     void openNewLocationDialog();
     void openSubWindow(QWidget * window);

src/mainwindow.cpp

@@ -297,6 +297,7 @@ void MainWindow::initExtraSignals() {
 
     connect(ui->action_NewMap, &QAction::triggered, this, &MainWindow::openNewMapDialog);
     connect(ui->action_NewLayout, &QAction::triggered, this, &MainWindow::openNewLayoutDialog);
+    connect(ui->actionDuplicate_Current_Map_Layout, &QAction::triggered, this, &MainWindow::openDuplicateMapOrLayoutDialog);
 }
 
 void MainWindow::on_actionCheck_for_Updates_triggered() {
@@ -1412,6 +1413,14 @@ void MainWindow::openDuplicateLayoutDialog(const QString &layoutId) {
     }
 }
 
+void MainWindow::openDuplicateMapOrLayoutDialog() {
+    if (this->editor->map) {
+        openDuplicateMapDialog(this->editor->map->name());
+    } else if (this->editor->layout) {
+        openDuplicateLayoutDialog(this->editor->layout->id);
+    }
+}
+
 void MainWindow::on_actionNew_Tileset_triggered() {
     auto dialog = new NewTilesetDialog(editor->project, this);
     connect(dialog, &NewTilesetDialog::applied, [this](Tileset *tileset) {