--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/mainwindow.h	Tue Jul 19 12:19:45 2016 +0200
@@ -0,0 +1,71 @@
+/* Copyright (C) 2016 by ETH Zürich
+ * Software engineering by Intevation GmbH
+ *
+ * This file is Free Software under the GNU GPL (v>=2)
+ * and comes with ABSOLUTELY NO WARRANTY!
+ * See LICENSE.txt for details.
+ */
+
+
+/** @file The Main UI class.
+ *
+ * Parent class of all dialogs and graphical user interaction.
+ */
+#include <QMainWindow>
+#include <QSettings>
+
+class QPushButton;
+class QLineEdit;
+class QCheckBox;
+class FileNameRequester;
+
+/**
+ * @class MainWindow
+ * @brief The mainwindow of the application.
+ * @details Holds the input fields and export options.
+ */
+class MainWindow : public QMainWindow
+{
+    Q_OBJECT
+
+public:
+    MainWindow();
+
+protected:
+    /** @brief UI setup */
+    void setupGUI();
+
+    /** @brief Cleanup and save the current state */
+    virtual void closeEvent(QCloseEvent *event);
+
+    /** @brief Restores the last window state */
+    void readSettings();
+
+public slots:
+    /** @brief directly set an input file. */
+    void setInputFile(const QString& file);
+
+    /** @brief Prefill title with @title. */
+    void setTitle(const QString& title);
+
+protected slots:
+    /** @brief Show an error dialog to the user. */
+    void showErrorMessage(const QString& errMsg);
+
+    /** @brief check if all mandataory fields are set. */
+    void checkCompleted();
+
+    /** @brief Do the actual conversion. */
+    void doConvert();
+
+private:
+    QSettings mSettings;
+
+    FileNameRequester* mInputRequester;
+    FileNameRequester* mOutRequester;
+    QLineEdit *mTitleEdit;
+    QPushButton *mConvertBtn;
+    QCheckBox *mPdfChk,
+              *mXlsxChk,
+              *mHtmlChk;
+};