kurlnavigatorbutton_p.h

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/*****************************************************************************
 * Copyright (C) 2006 by Peter Penz <peter.penz@gmx.at>                      *
 * Copyright (C) 2006 by Aaron J. Seigo <aseigo@kde.org>                     *
 *                                                                           *
 * This library is free software; you can redistribute it and/or             *
 * modify it under the terms of the GNU Library General Public               *
 * License as published by the Free Software Foundation; either              *
 * version 2 of the License, or (at your option) any later version.          *
 *                                                                           *
 * This library 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         *
 * Library General Public License for more details.                          *
 *                                                                           *
 * You should have received a copy of the GNU Library General Public License *
 * along with this library; see the file COPYING.LIB.  If not, write to      *
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,      *
 * Boston, MA 02110-1301, USA.                                               *
 *****************************************************************************/

#ifndef KURLNAVIGATORBUTTON_P_H
#define KURLNAVIGATORBUTTON_P_H

#include "kurlnavigatorbuttonbase_p.h"
#include "kurlnavigatormenu_p.h"

#include <kio/global.h>
#include <kio/udsentry.h>
#include <kurl.h>

#include <QPointer>

class KJob;
class QDropEvent;
class QPaintEvent;

namespace KIO
{
    class Job;
}

class KUrlNavigatorButton : public KUrlNavigatorButtonBase
{
    Q_OBJECT

public:
    explicit KUrlNavigatorButton(const KUrl& url, QWidget* parent);
    virtual ~KUrlNavigatorButton();

    void setUrl(const KUrl& url);
    KUrl url() const;

    /* Implementation note: QAbstractButton::setText() is not virtual,
     * but KUrlNavigatorButton needs to adjust the minimum size when
     * the text has been changed. KUrlNavigatorButton::setText() hides
     * QAbstractButton::setText() which is not nice, but sufficient for
     * the usage in KUrlNavigator.
     */
    void setText(const QString& text);

    void setActiveSubDirectory(const QString& subDir);
    QString activeSubDirectory() const;

    virtual QSize sizeHint() const;

Q_SIGNALS:
    void urlsDropped(const KUrl& destination, QDropEvent* event);

    void clicked(const KUrl& url, Qt::MouseButton button);

    void startedTextResolving();

    void finishedTextResolving();

protected:
    virtual void paintEvent(QPaintEvent* event);
    virtual void enterEvent(QEvent* event);
    virtual void leaveEvent(QEvent* event);
    virtual void dropEvent(QDropEvent* event);
    virtual void dragEnterEvent(QDragEnterEvent* event);
    virtual void dragMoveEvent(QDragMoveEvent* event);
    virtual void dragLeaveEvent(QDragLeaveEvent* event);
    virtual void mousePressEvent(QMouseEvent* event);
    virtual void mouseReleaseEvent(QMouseEvent* event);
    virtual void mouseMoveEvent(QMouseEvent* event);
    virtual void wheelEvent(QWheelEvent* event);

private Q_SLOTS:
    void requestSubDirs();

    void startSubDirsJob();

    void addEntriesToSubDirs(KIO::Job* job, const KIO::UDSEntryList& entries);

    void openSubDirsMenu(KJob* job);

    void replaceButton(KJob* job);

    void urlsDropped(QAction* action, QDropEvent* event);

    void slotMenuActionClicked(QAction* action);

    void statFinished(KJob*);

private:
    void cancelSubDirsRequest();

    int arrowWidth() const;
    bool isAboveArrow(int x) const;
    bool isTextClipped() const;
    void updateMinimumWidth();
    void initMenu(KUrlNavigatorMenu* menu, int startIndex);

private:
    bool m_hoverArrow;
    bool m_pendingTextChange;
    bool m_replaceButton;
    int m_wheelSteps;
    KUrl m_url;

    QString m_subDir;
    QTimer* m_openSubDirsTimer;
    KIO::Job* m_subDirsJob;

    QList<QPair<QString,QString> > m_subDirs;

    static QPointer<KUrlNavigatorMenu> m_subDirsMenu;
};

#endif