/****************************************************************************
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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
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** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
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** file. Please review the following information to ensure the GNU General
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****************************************************************************/

#ifndef NEWFORMWIDGET_H
#define NEWFORMWIDGET_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "shared_global_p.h"
#include "deviceprofile_p.h"

#include <abstractnewformwidget_p.h>

#include <QtGui/QWidget>
#include <QtGui/QPixmap>

#include <QtCore/QStringList>
#include <QtCore/QPair>
#include <QtCore/QMap>

QT_BEGIN_NAMESPACE

class QIODevice;
class QTreeWidgetItem;

namespace qdesigner_internal {

namespace Ui {
    class NewFormWidget;
}

class QDesignerWorkbench;

class QDESIGNER_SHARED_EXPORT NewFormWidget : public QDesignerNewFormWidgetInterface
{
    Q_OBJECT
    Q_DISABLE_COPY(NewFormWidget)

public:
    typedef QList<qdesigner_internal::DeviceProfile> DeviceProfileList;

    explicit NewFormWidget(QDesignerFormEditorInterface *core, QWidget *parentWidget);
    virtual ~NewFormWidget();

    virtual bool hasCurrentTemplate() const;
    virtual QString currentTemplate(QString *errorMessage = 0);

    // Convenience for implementing file dialogs with preview
    static QImage grabForm(QDesignerFormEditorInterface *core,
                           QIODevice &file,
                           const QString &workingDir,
                           const qdesigner_internal::DeviceProfile &dp);

private slots:
    void on_treeWidget_itemActivated(QTreeWidgetItem *item);
    void on_treeWidget_currentItemChanged(QTreeWidgetItem *current, QTreeWidgetItem *);
    void on_treeWidget_itemPressed(QTreeWidgetItem *item);
    void slotDeviceProfileIndexChanged(int idx);

private:
    QPixmap formPreviewPixmap(const QString &fileName) const;
    QPixmap formPreviewPixmap(QIODevice &file, const QString &workingDir = QString()) const;
    QPixmap formPreviewPixmap(const QTreeWidgetItem *item);

    void loadFrom(const QString &path, bool resourceFile, const QString &uiExtension,
                  const QString &selectedItem, QTreeWidgetItem *&selectedItemFound);
    void loadFrom(const QString &title, const QStringList &nameList,
                  const QString &selectedItem, QTreeWidgetItem *&selectedItemFound);

private:
    QString itemToTemplate(const QTreeWidgetItem *item, QString *errorMessage) const;
    QString currentTemplateI(QString *ptrToErrorMessage);

    QSize templateSize() const;
    void setTemplateSize(const QSize &s);
    int profileComboIndex() const;
    qdesigner_internal::DeviceProfile currentDeviceProfile() const;
    bool showCurrentItemPixmap();

    // Pixmap cache (item, profile combo index)
    typedef QPair<const QTreeWidgetItem *, int> ItemPixmapCacheKey;
    typedef QMap<ItemPixmapCacheKey, QPixmap> ItemPixmapCache;
    ItemPixmapCache m_itemPixmapCache;

    QDesignerFormEditorInterface *m_core;
    Ui::NewFormWidget *m_ui;
    QTreeWidgetItem *m_currentItem;
    QTreeWidgetItem *m_acceptedItem;
    DeviceProfileList m_deviceProfiles;
};

}

QT_END_NAMESPACE

#endif // NEWFORMWIDGET_H