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#ifndef QCONTACTACTION_H
#define QCONTACTACTION_H

#include "qtcontactsglobal.h"

#include "qcontactfilter.h"
#include "qcontactdetail.h"
#include "qcontact.h"

#include <QObject>

QTM_BEGIN_NAMESPACE

class QContactActionDescriptor;
class QContactActionData;
class Q_CONTACTS_EXPORT QContactAction : public QObject
{
    Q_OBJECT

public:
    /* return a list of names of actions which are available */
    static QStringList availableActions(const QString& vendorName = QString(), int implementationVersion = -1);

    /* return a list of descriptors for action implementations matching the given criteria */
    static QList<QContactActionDescriptor> actionDescriptors(const QString& actionName = QString(), const QString& vendorName = QString(), int implementationVersion = -1);

    /* return a pointer to an implementation of the action identified by the given descriptor */
    static QContactAction* action(const QContactActionDescriptor& descriptor);

public:
    virtual ~QContactAction() = 0;

    virtual QContactActionDescriptor actionDescriptor() const = 0;          // the descriptor which uniquely identifies this action
    virtual QVariantMap metaData() const = 0;                               // label, icon etc - under discussion! - replaces the above

    virtual QContactFilter contactFilter(const QVariant& value = QVariant()) const = 0; // use for matching
    virtual bool supportsDetail(const QContactDetail& detail) const = 0;    // whether this implementation supports the given detail
    virtual QList<QContactDetail> supportedDetails(const QContact& contact) const;

    /* Initiate the asynchronous action on the given contact (and optionally detail) */
    virtual void invokeAction(const QContact& contact, const QContactDetail& detail = QContactDetail()) = 0;

    /* The possible states of an action */
    enum State {
        InactiveState = 0,      // operation not yet started
        AutonomousState,        // operation started, no further information available - name under discussion.
        ActiveState,            // operation started, not yet finished
        FinishedState,          // operation successfully completed
        FinishedWithErrorState  // operation finished, but error occurred
    };

    /* Returns the most recently received result, or an invalid QVariantMap if no results received */
    virtual QVariantMap result() const = 0;

Q_SIGNALS:
    void progress(QContactAction::State state, const QVariantMap& result);
};

QTM_END_NAMESPACE

#endif
