invitation.cpp

#include "invitation.h"

#include "task.h"
#include "user.h"
#include <tools/invaliddataexception.h>

namespace domain
{

struct InvitationPrivate
{
    Task* task;
    User* user;
    Invitation::State state;
};

Invitation::Invitation(Task* task, User* user) : d(new InvitationPrivate())
{
    Q_ASSERT(task != 0);
    Q_ASSERT(user != 0);

    d->task = task;
    d->user = user;
    d->state = Pending;

    task->addInvitation(this);
    user->addInvitation(this);
}

Invitation::~Invitation()
{
    d->task->removeInvitation(this);
    d->user->removeInvitation(this);
    d->task->notify();
    delete d;
}

const Task* Invitation::task() const
{
    return d->task;
}

const User* Invitation::user() const
{
    return d->user;
}

Invitation::State Invitation::state() const
{
    return d->state;
}

QString Invitation::stateString() const
{
    switch (d->state)
    {
        case Pending:       return "Pending";
        case Accepted:      return "Accepted";
        case Declined:      return "Declined";

        default: break; //keep compiler happy
    }

    return "This is embarrassing...";
}

void Invitation::setState(Invitation::State state)
{
    if (state == All)
        throw tools::InvalidDataException("Cannot set the state to All");

    if (d->state != state)
    {
        d->state = state;
        d->task->notify();
        emit dataChanged();
    }
}

} //ns domain

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