refactoring qad widgets part 2

c++ cast, nullptr, forward declaration, agregate ui, connect to member functions, order and clear includes

libs/widgets/qcodeedit_completer_p.h

@@ -20,16 +20,16 @@
 #ifndef QCODEEDIT_COMPLETER_P_H
 #define QCODEEDIT_COMPLETER_P_H
 
-#include <QTreeWidget>
 #include "qcodeedit.h"
+#include <QTreeWidget>
 
 
 class QCodeEditCompleter: public QTreeWidget
 {
 	Q_OBJECT
 public:
-	QCodeEditCompleter(QWidget * parent = 0);
-	~QCodeEditCompleter();
+	QCodeEditCompleter(QWidget * parent = nullptr);
+	~QCodeEditCompleter() override;
 
 	void nextCompletition();
 	void previousCompletition();
@@ -39,16 +39,15 @@ public:
 	QString currentReturn() const;
 	QString currentValue() const;
 
-private:
-	void keyPressEvent(QKeyEvent * e) override;
-
 private slots:
 	void adjust();
 
 signals:
 	void commit();
 	void gotoHRef(QCodeEdit::ACEntry e);
-	
+
+private:
+	void keyPressEvent(QKeyEvent * e) override;
 };