Initial commit.

src/qt/qvalidatedlineedit.h

@@ -0,0 +1,29 @@
+#ifndef QVALIDATEDLINEEDIT_H
+#define QVALIDATEDLINEEDIT_H
+
+#include <QLineEdit>
+
+/** Line edit that can be marked as "invalid" to show input validation feedback. When marked as invalid,
+   it will get a red background until it is focused.
+ */
+class QValidatedLineEdit : public QLineEdit
+{
+    Q_OBJECT
+public:
+    explicit QValidatedLineEdit(QWidget *parent = 0);
+    void clear();
+
+protected:
+    void focusInEvent(QFocusEvent *evt);
+
+private:
+    bool valid;
+
+public slots:
+    void setValid(bool valid);
+
+private slots:
+    void markValid();
+};
+
+#endif // QVALIDATEDLINEEDIT_H