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

#include <QtCore/qurl.h>
#include <QtCore/qvariant.h>

#include <qmediacontent.h>


QT_BEGIN_NAMESPACE


class QMediaContentPrivate : public QSharedData
{
public:
    QMediaContentPrivate() {}
    QMediaContentPrivate(const QMediaResourceList &r):
        resources(r) {}

    QMediaContentPrivate(const QMediaContentPrivate &other):
        QSharedData(other),
        resources(other.resources)
    {}

    bool operator==(const QMediaContentPrivate &other) const
    {
        return resources == other.resources;
    }

    QMediaResourceList  resources;

private:
    QMediaContentPrivate& operator=(const QMediaContentPrivate &other);
};


/*!
    \class QMediaContent
    \preliminary
    \brief The QMediaContent class provides access to the resources relating to a media content.

    \ingroup multimedia

    QMediaContent is used within the multimedia framework as the logical handle
    to media content.  A QMediaContent object is composed of one or more
    \l {QMediaResource}s where each resource provides the URL and format
    information of a different encoding of the content.

    A non-null QMediaContent will always have a primary or canonical reference to
    the content available through the canonicalUrl() or canonicalResource()
    methods, any additional resources are optional.
*/


/*!
    Constructs a null QMediaContent.
*/

QMediaContent::QMediaContent()
{
}

/*!
    Constructs a media content with \a url providing a reference to the content.
*/

QMediaContent::QMediaContent(const QUrl &url):
    d(new QMediaContentPrivate)
{
    d->resources << QMediaResource(url);
}

/*!
    Constructs a media content with \a resource providing a reference to the content.
*/

QMediaContent::QMediaContent(const QMediaResource &resource):
    d(new QMediaContentPrivate)
{
    d->resources << resource;
}

/*!
    Constructs a media content with \a resources providing a reference to the content.
*/

QMediaContent::QMediaContent(const QMediaResourceList &resources):
    d(new QMediaContentPrivate(resources))
{
}

/*!
    Constructs a copy of the media content \a other.
*/

QMediaContent::QMediaContent(const QMediaContent &other):
    d(other.d)
{
}

/*!
    Destroys the media content object.
*/

QMediaContent::~QMediaContent()
{
}

/*!
    Assigns the value of \a other to this media content.
*/

QMediaContent& QMediaContent::operator=(const QMediaContent &other)
{
    d = other.d;
    return *this;
}

/*!
    Returns true if \a other is equivalent to this media content; false otherwise.
*/

bool QMediaContent::operator==(const QMediaContent &other) const
{
    return (d.constData() == 0 && other.d.constData() == 0) ||
            (d.constData() != 0 && other.d.constData() != 0 &&
             *d.constData() == *other.d.constData());
}

/*!
    Returns true if \a other is not equivalent to this media content; false otherwise.
*/

bool QMediaContent::operator!=(const QMediaContent &other) const
{
    return !(*this == other);
}

/*!
    Returns true if this media content is null (uninitialized); false otherwise.
*/

bool QMediaContent::isNull() const
{
    return d.constData() == 0;
}

/*!
    Returns a QUrl that represents that canonical resource for this media content.
*/

QUrl QMediaContent::canonicalUrl() const
{
    return canonicalResource().url();
}

/*!
    Returns a QMediaResource that represents that canonical resource for this media content.
*/

QMediaResource QMediaContent::canonicalResource() const
{
    return d.constData() != 0
            ?  d->resources.value(0)
            : QMediaResource();
}

/*!
    Returns a list of alternative resources for this media content.  The first item in this list
    is always the canonical resource.
*/

QMediaResourceList QMediaContent::resources() const
{
    return d.constData() != 0
            ? d->resources
            : QMediaResourceList();
}

QT_END_NAMESPACE