Combine minor creation dialogs

include/ui/newlayoutform.h

@@ -33,7 +33,8 @@ private:
     Project *m_project;
 
     bool validateMapDimensions();
-    bool validateTilesets();    
+    bool validatePrimaryTileset(bool allowEmpty = false);
+    bool validateSecondaryTileset(bool allowEmpty = false);
 };
 
 #endif // NEWLAYOUTFORM_H

include/ui/newnamedialog.h

@@ -0,0 +1,42 @@
+#ifndef NEWNAMEDIALOG_H
+#define NEWNAMEDIALOG_H
+
+/*
+    This is a generic dialog for requesting a new unique name from the user.
+*/
+
+#include <QDialog>
+#include <QAbstractButton>
+
+class Project;
+
+namespace Ui {
+class NewNameDialog;
+}
+
+class NewNameDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit NewNameDialog(const QString &label, Project *project, QWidget *parent = nullptr);
+    ~NewNameDialog();
+
+    void setNamePrefix(const QString &prefix);
+
+    virtual void accept() override;
+
+signals:
+    void applied(const QString &newName);
+
+private:
+    Ui::NewNameDialog *ui;
+    Project *project = nullptr;
+    const QString symbolPrefix;
+
+    bool validateName(bool allowEmpty = false);
+    void onNameChanged(const QString &name);
+    void dialogButtonClicked(QAbstractButton *button);
+};
+
+#endif // NEWNAMEDIALOG_H