/**
 * @file SdiWindow/sdiwindow.h
 * @brief SdiWindow module's implementation
 * @author Enar Vaikene
 *
 * Copyright (c) 2011-2019 Enar Vaikene
 *
 * This file is part of the eVaf C++ cross-platform application development framework.
 *
 * This file can be used under the terms of the GNU General Public License
 * version 3.0 as published by the Free Software Foundation and appearing in
 * the file LICENSE included in the packaging of this file. Please review the
 * the following information to ensure the GNU General Public License version
 * 3.0 requirements will be met: http://www.gnu.org/copyleft/gpl.html.
 *
 * Alternatively, this file may be used in accordance with the Commercial License
 * Agreement provided with the Software.
 */

#ifndef __SDIWINDOW_SDIWINDOW_H
#  define __SDIWINDOW_SDIWINDOW_H

#include "isdiwindow.h"

#include <Plugins/iPlugin>
#include <Gui/Panel>

#include <QObject>
#include <QString>
#include <QWidget>
#include <QList>
#include <QVector>
#include <QHash>
#include <QScopedPointer>

class QVBoxLayout;

namespace eVaf {
namespace SdiWindow {
namespace Internal {

/**
 * Main window widget implementing the iSdiWindow interface
 */
class MainWindow : public QWidget, public iSdiWindow
{
    Q_OBJECT
    Q_INTERFACES(eVaf::SdiWindow::iSdiWindow)

public:

    MainWindow(QWidget * parent = nullptr, Qt::WindowFlags flags = Qt::WindowFlags());

    virtual ~MainWindow();

    virtual bool init(QString const & args);

    virtual void done();

    virtual bool isReady() { return mReady; }

    virtual void addPanel(QString const & name, Gui::Panel * panel);

    virtual Gui::Panel * panel(QString const & name) const;

    virtual bool showPanel(QString const & name);

    virtual void changeEvent(QEvent * e);

    virtual void closeEvent(QCloseEvent * e);


protected: // Methods


private: // Methods

    void setWindowSize();

    void saveSettings();

    void restoreSettings();


private: // Members

    /// Ready flag
    bool mReady;

    /// The layout of the main window
    QVBoxLayout * mLayout;

    /// Name of the main panel that becomes part of this window
    QString mMainPanelName;

    /// List of GUI::Panel objects added to the manager
    QList<Gui::Panel *> mPanels;

    /// List of minimized GUI::Panel objects
    QVector<Gui::Panel *> mMinimizedPanels;

    /// Hash with panel names
    QHash<QString, Gui::Panel *> mPanelNames;

    /// Current main panel added to this window
    Gui::Panel * mMainPanel;


private: // Methods

    /// Gets the main panel name from module attributes
    QString getMainPanelName(QString const & args) const;


private slots:

    /// Panel destroyed signal. We need to remove the panel from all the
    /// lists.
    void panelDestroyed(QObject * obj = nullptr);

};

/**
 * SdiWindow module's implementation
 */
class SdiWindowPlugin : public Plugins::iPlugin
{
    Q_OBJECT
    Q_INTERFACES(eVaf::Plugins::iPlugin)

public:

    SdiWindowPlugin();

    virtual ~SdiWindowPlugin();

    virtual bool init(const QString & args);

    virtual void done();

    virtual bool isReady() const { return mWindow != nullptr && mWindow->isReady(); }


private:

    /// iSdiWindow interface implementation
    QScopedPointer<MainWindow> mWindow;
};

} // namespace eVaf::SdiWindow::Internal
} // namespace eVaf::SdiWindow
} // namespace eVaf

#endif // sdiwindow.h