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#ifndef QCONTACTACTION_H
#define QCONTACTACTION_H

#include "qtcontactsglobal.h"

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

#include <QObject>

QTM_BEGIN_NAMESPACE

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

public:
    virtual ~QContactAction() = 0;

    /* Initiate the asynchronous action on the given list of contacts (and optionally, per-contact-details) with the given parameters */
    virtual bool invokeAction(const QList<QContactActionTarget>& targets, const QVariantMap& parameters = QVariantMap()) = 0;

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

    virtual State state() const = 0;

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

    /* Convenience functions */
    bool invokeAction(const QContactActionTarget& target, const QVariantMap& parameters = QVariantMap())
    {
        return invokeAction(QList<QContactActionTarget>() << target, parameters);
    }
    bool invokeAction(const QContact& contact, const QContactDetail& detail = QContactDetail(), const QVariantMap& parameters = QVariantMap())
    {
        return invokeAction(QList<QContactActionTarget>() << QContactActionTarget(contact, detail), parameters);
    }

    // common actions
#ifdef Q_QDOC
    static const QLatin1Constant ActionCall;
    static const QLatin1Constant ActionEmail;
    static const QLatin1Constant ActionSms;
    static const QLatin1Constant ActionMms;
    static const QLatin1Constant ActionChat;
    static const QLatin1Constant ActionVideoCall;
    static const QLatin1Constant ActionOpenInEditor;
    static const QLatin1Constant ActionOpenInViewer;
#else
    Q_DECLARE_LATIN1_CONSTANT(ActionCall, "call");
    Q_DECLARE_LATIN1_CONSTANT(ActionEmail, "email");
    Q_DECLARE_LATIN1_CONSTANT(ActionSms, "sms");
    Q_DECLARE_LATIN1_CONSTANT(ActionMms, "mms");
    Q_DECLARE_LATIN1_CONSTANT(ActionChat, "chat");
    Q_DECLARE_LATIN1_CONSTANT(ActionVideoCall, "videocall");
    Q_DECLARE_LATIN1_CONSTANT(ActionOpenInEditor, "edit");
    Q_DECLARE_LATIN1_CONSTANT(ActionOpenInViewer, "view");
#endif

Q_SIGNALS:
    void stateChanged(QContactAction::State);
    void resultsAvailable();

public:
    /* return a list of names of actions which are available */
    static QStringList availableActions(const QString& serviceName = QString());

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

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

QTM_END_NAMESPACE

#endif
