add drag and drop onto app icon (dock etc.) support for MacOS platform.

YACReader/goto_dialog.h

@@ -0,0 +1,32 @@
+#ifndef __GOTODIALOG_H
+#define __GOTODIALOG_H
+
+#include <QDialog>
+#include <QLabel>
+#include <QLineEdit>
+#include <QPushButton>
+#include <QIntValidator>
+
+	class GoToDialog : public QDialog
+	{
+	Q_OBJECT
+	public:
+		GoToDialog(QWidget * parent = 0);
+	private:
+		QLabel * numPagesLabel;
+		QLabel * textLabel;
+		QLineEdit * pageNumber;
+		QIntValidator * v;
+		QPushButton * accept;
+		QPushButton * cancel;
+		void setupUI();
+	public slots:
+		void goTo();
+		void setNumPages(unsigned int numPages);
+        void open();
+	signals:
+		void goToPage(unsigned int page);
+	};
+
+#endif
+