1 files changed, 60 insertions, 0 deletions
diff --git a/src/qt/bitcoinamountfield.h b/src/qt/bitcoinamountfield.h
new file mode 100644
index 0000000000..ead8bdb84b
--- /dev/null
+++ b/src/qt/bitcoinamountfield.h
@@ -0,0 +1,60 @@
+#ifndef BITCOINFIELD_H
+#define BITCOINFIELD_H
+
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+class QDoubleSpinBox;
+class QValueComboBox;
+QT_END_NAMESPACE
+
+/** Widget for entering bitcoin amounts.
+  */
+class BitcoinAmountField: public QWidget
+{
+    Q_OBJECT
+    Q_PROPERTY(qint64 value READ value WRITE setValue NOTIFY textChanged USER true)
+public:
+    explicit BitcoinAmountField(QWidget *parent = 0);
+
+    qint64 value(bool *valid=0) const;
+    void setValue(qint64 value);
+
+    /** Mark current value as invalid in UI. */
+    void setValid(bool valid);
+    /** Perform input validation, mark field as invalid if entered value is not valid. */
+    bool validate();
+
+    /** Change unit used to display amount. */
+    void setDisplayUnit(int unit);
+
+    /** Make field empty and ready for new input. */
+    void clear();
+
+    /** Qt messes up the tab chain by default in some cases (issue http://bugreports.qt.nokia.com/browse/QTBUG-10907),
+        in these cases we have to set it up manually.
+    */
+    QWidget *setupTabChain(QWidget *prev);
+
+signals:
+    void textChanged();
+
+protected:
+    /** Intercept focus-in event and ',' keypresses */
+    bool eventFilter(QObject *object, QEvent *event);
+
+private:
+    QDoubleSpinBox *amount;
+    QValueComboBox *unit;
+    int currentUnit;
+
+    void setText(const QString &text);
+    QString text() const;
+
+private slots:
+    void unitChanged(int idx);
+
+};
+
+
+#endif // BITCOINFIELD_H