Smaller fixes and added Qt5 support

src/editor/widgets/qlineeditwithmenu.cpp

@@ -0,0 +1,14 @@
+#include "qlineeditwithmenu.h"
+
+#include <QMenu>
+#include <QMouseEvent>
+
+void QLineEditWithMenu::mousePressEvent(QMouseEvent *event)
+{
+    QLineEdit::mousePressEvent(event);
+
+    if (!m_menu)
+        return;
+
+    m_menu->exec(mapToGlobal(event->pos()));
+}

src/editor/widgets/qlineeditwithmenu.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <QLineEdit>
+
+class QMenu;
+
+class QLineEditWithMenu : public QLineEdit
+{
+    Q_OBJECT
+
+public:
+    using QLineEdit::QLineEdit;
+
+    QMenu *menu() { return m_menu; }
+    const QMenu *menu() const { return m_menu; }
+    void setMenu(QMenu *menu) { m_menu = menu; }
+
+protected:
+    void mousePressEvent(QMouseEvent *event) override;
+
+private:
+    QMenu *m_menu{};
+};

src/editor/widgets/qscrollareawithmenu.cpp

@@ -0,0 +1,14 @@
+#include "qscrollareawithmenu.h"
+
+#include <QMenu>
+#include <QMouseEvent>
+
+void QScrollAreaWithMenu::mousePressEvent(QMouseEvent *event)
+{
+    QScrollArea::mousePressEvent(event);
+
+    if (!m_menu)
+        return;
+
+    m_menu->exec(mapToGlobal(event->pos()));
+}

src/editor/widgets/qscrollareawithmenu.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <QScrollArea>
+
+class QMenu;
+
+class QScrollAreaWithMenu : public QScrollArea
+{
+    Q_OBJECT
+
+public:
+    using QScrollArea::QScrollArea;
+
+    QMenu *menu() { return m_menu; }
+    const QMenu *menu() const { return m_menu; }
+    void setMenu(QMenu *menu) { m_menu = menu; }
+
+protected:
+    void mousePressEvent(QMouseEvent *event) override;
+
+private:
+    QMenu *m_menu{};
+};