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/** ===========================================================
 * @file
 *
 * This file is a part of digiKam project
 * <a href="http://www.digikam.org">http://www.digikam.org</a>
 *
 * @date   2008-08-21
 * @brief  a combo box with a width not depending of text
 *         content size
 *
 * @author Copyright (C) 2006-2013 by Gilles Caulier
 *         <a href="mailto:caulier dot gilles at gmail dot com">caulier dot gilles at gmail dot com</a>
 * @author Copyright (C) 2008 by Andi Clemens
 *         <a href="mailto:andi dot clemens at googlemail dot com">andi dot clemens at googlemail dot com</a>
 * @author Copyright (C) 2005 by Tom Albers
 *         <a href="mailto:tomalbers at kde dot nl">tomalbers at kde dot nl</a>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * ============================================================ */

#ifndef SQUEEZEDCOMBOBOX_H
#define SQUEEZEDCOMBOBOX_H

// Qt includes

#include <QtGui/QComboBox>

// Local includes

#include "libkdcraw_export.h"

namespace KDcrawIface
{

/** @class SqueezedComboBox
 *
 * This widget is a QComboBox, but then a little bit
 * different. It only shows the right part of the items
 * depending on de size of the widget. When it is not
 * possible to show the complete item, it will be shortened
 * and "..." will be prepended.
 */
class LIBKDCRAW_EXPORT SqueezedComboBox : public QComboBox
{
    Q_OBJECT

public:

    /**
     * Constructor
     * @param parent parent widget
     * @param name name to give to the widget
     */
    explicit SqueezedComboBox(QWidget* const parent = 0, const char* name = 0 );
    /**
     * destructor
     */
    virtual ~SqueezedComboBox();

    /**
     *
     * Returns true if the combobox contains the original (not-squeezed)
     * version of text.
     * @param text the original (not-squeezed) text to check for
     */
    bool contains(const QString& text) const;

    /**
     * This inserts a item to the list. See QComboBox::insertItem()
     * for details. Please do not use QComboBox::insertItem() to this
     * widget, as that will fail.
     * @param newItem the original (long version) of the item which needs
     *                to be added to the combobox
     * @param index the position in the widget.
     * @param userData custom meta-data assigned to new item.
     */
    void insertSqueezedItem(const QString& newItem, int index,
                            const QVariant& userData=QVariant());

    /**
     * This inserts items to the list. See QComboBox::insertItems()
     * for details. Please do not use QComboBox:: insertItems() to this
     * widget, as that will fail.
     * @param newItems the originals (long version) of the items which needs
     *                 to be added to the combobox
     * @param index the position in the widget.
     */
    void insertSqueezedList(const QStringList& newItems, int index);

    /**
     * Append an item.
     * @param newItem the original (long version) of the item which needs
     *                to be added to the combobox
     * @param userData custom meta-data assigned to new item.
     */
    void addSqueezedItem(const QString& newItem,
                         const QVariant& userData=QVariant());

    /**
     * Set the current item to the one matching the given text.
     *
     * @param itemText the original (long version) of the item text
     */
    void setCurrent(const QString& itemText);

    /**
     * This method returns the full text (not squeezed) of the currently
     * highlighted item.
     * @return full text of the highlighted item
     */
    QString itemHighlighted() const;

    /**
     * This method returns the full text (not squeezed) for the index.
     * @param index the position in the widget.
     * @return full text of the item
     */
    QString item(int index) const;

    /**
     * Sets the sizeHint() of this widget.
     */
    virtual QSize sizeHint() const;

private Q_SLOTS:

    void slotTimeOut();
    void slotUpdateToolTip(int index);

private:

    void    resizeEvent(QResizeEvent*);
    QString squeezeText(const QString& original) const;

    // Prevent these from being used.
    QString currentText() const;
    void    setCurrentText(const QString& itemText);
    void    insertItem(const QString& text);
    void    insertItem(qint32 index, const QString& text);
    void    insertItem(int index, const QIcon& icon, const QString& text, const QVariant& userData=QVariant());
    void    insertItems(int index, const QStringList& list);
    void    addItem(const QString& text);
    void    addItem(const QIcon& icon, const QString& text, const QVariant& userData=QVariant());
    void    addItems(const QStringList& texts);
    QString itemText(int index) const;

private:

    class Private;
    Private* const d;
};

}  // namespace KDcrawIface

#endif // SQUEEZEDCOMBOBOX_H