/****************************************************************************

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** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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** This file is part of the Qt Designer of the Qt Toolkit.

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** ensure the GNU Lesser General Public License version 2.1 requirements

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****************************************************************************/

#ifndef WIDGETBOXTREEWIDGET_H

#define WIDGETBOXTREEWIDGET_H

#include <qdesigner_widgetbox_p.h>

#include <QtGui/QTreeWidget>

#include <QtGui/QIcon>

#include <QtCore/QList>

#include <QtCore/QHash>

#include <QtCore/QXmlStreamReader> // Cannot forward declare them on Mac

#include <QtCore/QXmlStreamWriter>

QT_BEGIN_NAMESPACE

class QDesignerFormEditorInterface;

class QDesignerDnDItemInterface;

class QTimer;

namespace qdesigner_internal {

class WidgetBoxCategoryListView;

// WidgetBoxTreeWidget: A tree of categories

class WidgetBoxTreeWidget : public QTreeWidget

{

    Q_OBJECT

public:

    typedef QDesignerWidgetBoxInterface::Widget Widget;

    typedef QDesignerWidgetBoxInterface::Category Category;

    typedef QDesignerWidgetBoxInterface::CategoryList CategoryList;

    explicit WidgetBoxTreeWidget(QDesignerFormEditorInterface *core, QWidget *parent = 0);

    ~WidgetBoxTreeWidget();

    int categoryCount() const;

    Category category(int cat_idx) const;

    void addCategory(const Category &cat);

    void removeCategory(int cat_idx);

    int widgetCount(int cat_idx) const;

    Widget widget(int cat_idx, int wgt_idx) const;

    void addWidget(int cat_idx, const Widget &wgt);

    void removeWidget(int cat_idx, int wgt_idx);

    void dropWidgets(const QList<QDesignerDnDItemInterface*> &item_list);

    void setFileName(const QString &file_name);

    QString fileName() const;

    bool load(QDesignerWidgetBox::LoadMode loadMode);

    bool loadContents(const QString &contents);

    bool save();

    QIcon iconForWidget(QString iconName) const;

signals:

    void pressed(const QString name, const QString dom_xml, const QPoint &global_mouse_pos);

public slots:

    void filter(const QString &);

protected:

    void contextMenuEvent(QContextMenuEvent *e);

    void resizeEvent(QResizeEvent *e);

private slots:

    void slotSave();

    void slotScratchPadItemDeleted();

    void slotLastScratchPadItemDeleted();

    void handleMousePress(QTreeWidgetItem *item);

    void deleteScratchpad();

    void slotListMode();

    void slotIconMode();

private:

    WidgetBoxCategoryListView *addCategoryView(QTreeWidgetItem *parent, bool iconMode);

    WidgetBoxCategoryListView *categoryViewAt(int idx) const;

    void adjustSubListSize(QTreeWidgetItem *cat_item);

    static bool readCategories(const QString &fileName, const QString &xml, CategoryList *cats, QString *errorMessage);

    static bool readWidget(Widget *w, const QString &xml, QXmlStreamReader &r);

    CategoryList loadCustomCategoryList() const;

    void writeCategories(QXmlStreamWriter &writer, const CategoryList &cat_list) const;

    int indexOfCategory(const QString &name) const;

    int indexOfScratchpad() const;

    int ensureScratchpad();

    void addCustomCategories(bool replace);

    void saveExpandedState() const;

    void restoreExpandedState();

    void updateViewMode();

    QDesignerFormEditorInterface *m_core;

    QString m_file_name;

    typedef QHash<QString, QIcon> IconCache;

    mutable IconCache m_pluginIcons;

    bool m_iconMode;

    QTimer *m_scratchPadDeleteTimer;

};

}  // namespace qdesigner_internal

QT_END_NAMESPACE

#endif // WIDGETBOXTREEWIDGET_H