1 files changed, 50 insertions, 0 deletions
diff --git a/tests/poppler/qt4/demos/documentobserver.h b/tests/poppler/qt4/demos/documentobserver.h
new file mode 100644
index 00000000..38fe2043
--- /dev/null
+++ b/tests/poppler/qt4/demos/documentobserver.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2008, Pino Toscano <pino@kde.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#ifndef DOCUMENTOBSERVER_H
+#define DOCUMENTOBSERVER_H
+
+class PdfViewer;
+namespace Poppler {
+class Document;
+}
+
+class DocumentObserver
+{
+friend class PdfViewer;
+
+public:
+    virtual ~DocumentObserver();
+
+    virtual void documentLoaded() = 0;
+    virtual void documentClosed() = 0;
+    virtual void pageChanged(int page) = 0;
+
+protected:
+    DocumentObserver();
+
+    Poppler::Document* document() const;
+    void setPage(int page);
+    int page() const;
+    void reloadPage();
+
+private:
+    PdfViewer *m_viewer;
+};
+
+#endif