/*

 * Copyright (C) 2007 Apple Inc.  All rights reserved.

 * Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 * 2.  Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef WorkQueueItemQt_h

#define WorkQueueItemQt_h

#include <QPointer>

#include <QString>

#include <qwebframe.h>

#include <qwebpage.h>

class WorkQueueItem {

public:

    WorkQueueItem(QWebPage *page) : m_webPage(page) {}

    virtual ~WorkQueueItem() { }

    virtual bool invoke() const = 0;

protected:

    QPointer<QWebPage> m_webPage;

};

class LoadItem : public WorkQueueItem {

public:

    LoadItem(const QString &url, const QString &target, QWebPage *page)

        : WorkQueueItem(page)

        , m_url(url)

        , m_target(target)

    {

    }

    QString url() const { return m_url; }

    QString target() const { return m_target; }

    virtual bool invoke() const;

private:

    QString m_url;

    QString m_target;

};

class LoadHTMLStringItem : public WorkQueueItem {

public:

    LoadHTMLStringItem(const QString& content, const QString &baseURL, QWebPage *page)

        : WorkQueueItem(page)

        , m_content(content)

        , m_baseURL(baseURL)

    {

    }

private:

    virtual bool invoke() const;

    QString m_content;

    QString m_baseURL;

};

class ReloadItem : public WorkQueueItem {

public:

    ReloadItem(QWebPage *page)

        : WorkQueueItem(page)

    {

    }

    virtual bool invoke() const;

};

class ScriptItem : public WorkQueueItem {

public:

    ScriptItem(const QString &script, QWebPage *page)

        : WorkQueueItem(page)

        , m_script(script)

    {

    }

    QString script() const { return m_script; }

    virtual bool invoke() const;

private:

    QString m_script;

};

class LoadingScriptItem : public ScriptItem {

public:

    LoadingScriptItem(const QString& script, QWebPage* page)

        : ScriptItem(script, page)

    {

    }

    virtual bool invoke() const { return ScriptItem::invoke(); }

};

class NonLoadingScriptItem : public ScriptItem {

public:

    NonLoadingScriptItem(const QString& script, QWebPage* page)

        : ScriptItem(script, page)

    {

    }

    virtual bool invoke() const { ScriptItem::invoke(); return false; }

};

class BackForwardItem : public WorkQueueItem {

public:

    virtual bool invoke() const;

protected:

    BackForwardItem(int howFar, QWebPage *page)

        : WorkQueueItem(page)

        , m_howFar(howFar)

    {

    }

    int m_howFar;

};

class BackItem : public BackForwardItem {

public:

    BackItem(unsigned howFar, QWebPage *page)

        : BackForwardItem(-howFar, page)

    {

    }

};

class ForwardItem : public BackForwardItem {

public:

    ForwardItem(unsigned howFar, QWebPage *page)

        : BackForwardItem(howFar, page)

    {

    }

};

#endif // !defined(WorkQueueItemQt_h)