#ifndef MAINWINDOW_HH

#define MAINWINDOW_HH

#include <QMainWindow>

#include "DiagramView.hh"

class QActionGroup;

class Selectable;

namespace Ui {

    class MainWindow;

}

/**

 * @todo docs

 **/

class MainWindow : public QMainWindow {

    Q_OBJECT

public:

    MainWindow(QWidget *parent = 0);

    ~MainWindow();

protected:

    void changeEvent(QEvent *e);

    /**

     * Event handler for close events. Saves the window size and position into settings.

     *

     * @param event not used.

     **/

    void closeEvent (QCloseEvent * event);

private slots:

    /**

     * Shows the given @p message in the status bar.

     *

     * @param message the message to show.

     * @param timeout optional timeout in ms or 0 for a permanent message.

     **/

    void showMessage (const QString & message, int timeout);

    /**

     * Callback for when the user has clicked something in the toolbar of available shapes. Sets a new mode for the diagram view

     * so that it knows what to do when it's clicked.

     *

     * @param action the triggered action

     **/

    void actionSelected (QAction * action);

    /**

     * Callback for when the diagram view has a new @p mode. Sets the select action to be active if the @p mode is back to

     * standard mode (nothing active).

     *

     * @param mode the new mode.

     **/

    void modeChanged (DiagramView::OperationMode mode);

    /**

     * Callback for when the user has clicked something in the diagram. Updates the edit panel to show the editor for the current @p selectable.

     * If there is no suitable editor part then the panel is made empty.

     *

     * @param selectable the clicked shape or 0 for no shape.

     **/

    void diagramShapeSelected (Selectable * selectable);

    /**

     * Callback for the @e New action. Asks the user for confirmation and then recreates the diagram, deleteing the old.

     **/

    void newDiagram ();

    /**

     * Callback for the @e Open action. Asks the user for the file to open and loads it if valid.

     **/

    void openDiagram ();

    /**

     * Callback for the @e Save action. If no filename has been set then calls saveDiagramAs() so get a filename.

     **/

    void saveDiagram ();

    /**

     * Callback for the @e Save @e As action. Calls saveDiagram() to do the real saving.

     **/

    void saveDiagramAs ();

    /**

     * Callback for the @e Validate action. Opens a validation dialog.

     **/

    void validate ();

    /**

     * Callback for the @e Generate action. Opens a code generation dialog.

     **/

    void generate ();

    /**

     * Callback for the @e About action. Opens an about dialog.

     **/

    void about ();

    /**

     * Callback for the @e Help action. Opens a browser for the homepage.

     **/

    void help ();

private:

    /**

     * Set up the action in the object toolbar. Sets some internal properties for the actions.

     **/

    void setupActions ();

    Ui::MainWindow *ui;

    //! the name of the current diagram file

    QString m_filename;

    //! a group for the state action in the toolbar

    QActionGroup * m_action_group;

};

#endif // MAINWINDOW_HH