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#include "qaction.h"
#include "qaction_p.h"
#include <Qt3DCore/private/qnode_p.h>
#include <Qt3DCore/qpropertyupdatedchange.h>
#include <Qt3DCore/qpropertynodeaddedchange.h>
#include <Qt3DCore/qpropertynoderemovedchange.h>
#include <Qt3DCore/qnodecreatedchange.h>
#include <Qt3DInput/qabstractactioninput.h>

QT_BEGIN_NAMESPACE

namespace Qt3DInput {

/*!
    \class Qt3DInput::QAction
    \inmodule Qt3DInput
    \inherits Qt3DCore::QNode
    \brief Links a set of QAbstractActionInput that trigger the same event.
    \since 5.7
*/

/*!
    \qmltype Action
    \inqmlmodule Qt3D.Input
    \instantiates Qt3DInput::QAction
    \brief QML frontend for the Qt3DInput::QAction C++ class.

    Links a set of AbstractActionInput that trigger the same event.
    \since 5.7
*/

/*!
    Constructs a new QAction instance with parent \a parent.
 */
QAction::QAction(Qt3DCore::QNode *parent)
    : Qt3DCore::QNode(*new QActionPrivate(), parent)
{
}

/*! \internal */
QAction::~QAction()
{
}

/*!
    \qmlproperty bool Qt3D.Input::Action::action
*/

/*!
    \property QAction::active

    Holds \c true if the action is active.
 */
bool QAction::isActive() const
{
    Q_D(const QAction);
    return d->m_active;
}

/*!
    \qmlproperty list<AbstractActionInput> Qt3D.Input::Action::inputs

    The list of AbstractActionInput that must be triggered to trigger this Action.
*/

/*!
    Append QAbstractActionInput \a input to the list of inputs that can trigger this action.
 */
void QAction::addInput(QAbstractActionInput *input)
{
    Q_D(QAction);
    if (!d->m_inputs.contains(input)) {
        d->m_inputs.push_back(input);

        if (!input->parent())
            input->setParent(this);

        // Ensures proper bookkeeping
        d->registerDestructionHelper(input, &QAction::removeInput, d->m_inputs);

        if (d->m_changeArbiter != nullptr) {
            const auto change = Qt3DCore::QPropertyNodeAddedChangePtr::create(id(), input);
            change->setPropertyName("input");
            d->notifyObservers(change);
        }
    }
}

/*!
    Remove QAbstractActionInput \a input to the list of inputs that can trigger this action.
 */
void QAction::removeInput(QAbstractActionInput *input)
{
    Q_D(QAction);
    if (d->m_inputs.contains(input)) {

        if (d->m_changeArbiter != nullptr) {
            const auto change = Qt3DCore::QPropertyNodeRemovedChangePtr::create(id(), input);
            change->setPropertyName("input");
            d->notifyObservers(change);
        }

        d->m_inputs.removeOne(input);

        // Remove bookkeeping connection
        d->unregisterDestructionHelper(input);
    }
}

/*!
    Returns the list of inputs that can trigger this action.
 */
QVector<QAbstractActionInput *> QAction::inputs() const
{
    Q_D(const QAction);
    return d->m_inputs;
}

/*! \internal */
void QAction::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &change)
{
    Q_D(QAction);
    Qt3DCore::QPropertyUpdatedChangePtr e = qSharedPointerCast<Qt3DCore::QPropertyUpdatedChange>(change);
    if (e->type() == Qt3DCore::PropertyUpdated && e->propertyName() == QByteArrayLiteral("active")) {
        d->setActive(e->value().toBool());
    }
}

Qt3DCore::QNodeCreatedChangeBasePtr QAction::createNodeCreationChange() const
{
    auto creationChange = Qt3DCore::QNodeCreatedChangePtr<QActionData>::create(this);
    auto &data = creationChange->data;
    data.inputIds = qIdsForNodes(inputs());
    return creationChange;
}

} // Qt3DInput

QT_END_NAMESPACE
