1 files changed, 58 insertions, 0 deletions
diff --git a/kviewshell/history.h b/kviewshell/history.h
new file mode 100644
index 00000000..2c651475
--- /dev/null
+++ b/kviewshell/history.h
@@ -0,0 +1,58 @@
+// -*- C++ -*-
+#ifndef history_h
+#define history_h
+
+// history.h
+//
+// (C) 2001 Stefan Kebekus
+// Distributed under the GPL
+
+#include <qobject.h>
+#include <qvaluelist.h>
+
+#define HISTORYLENGTH 10
+
+class HistoryItem
+{
+ public:
+  HistoryItem(Q_UINT32, Q_UINT32);
+  HistoryItem() {}
+
+  bool operator== (const HistoryItem& item) const;
+
+  Q_UINT32 page;
+  Q_UINT32 ypos;
+};
+
+inline
+bool operator!=(const HistoryItem& lhs, const HistoryItem& rhs)
+{
+  return !(lhs == rhs);
+}
+
+
+class History : public QObject
+{
+  Q_OBJECT
+
+public:
+  History();
+
+  void          add(Q_UINT32 page, Q_UINT32 ypos);
+  void          clear();
+
+  HistoryItem*  forward();
+  HistoryItem*  back();
+
+signals:
+  void backItem(bool);
+  void forwardItem(bool);
+
+private:
+  // List of history items. First item is the oldest.
+  QValueList<HistoryItem> historyList;
+
+  QValueList<HistoryItem>::iterator currentItem;
+};
+
+#endif