#include "NavigationListModel.h"

#include "NavigationItemModel.h"

NavigationListModel::NavigationListModel(QObject* parent) : QObject(parent)
{

}

QList<QObject *> NavigationListModel::getModelItems()
{
    return mItems;
}

void NavigationListModel::setModelItems(QList<NavigationItemModel *> list)
{
    mItems.clear();
    for(const auto& item : list){
        mItems.append(item);
    }

    if(mItems.isEmpty()){
        mIsBackVisible = false;
    } else{
        mIsBackVisible = !list.at(0)->getParentItem()->isRoot();
    }

    emit modelItemsChanged();
}

bool NavigationListModel::isBackVisible()
{
    return mIsBackVisible;
}

void NavigationListModel::navigateTo(NavigationItemModel *item)
{
    if(!item) return;
    setModelItems(item->getSiblings());
}

void NavigationListModel::navigateBack()
{
    if(!mIsBackVisible || mItems.isEmpty()) return;

    auto item = qobject_cast<NavigationItemModel*>(mItems.at(0));
    if(!item || item->getParentItem()->isRoot()) return;

    navigateTo(item->getParentItem());
}