////  DomainConnectionModel.cpp////  Created by Vlad Stelmahovsky//  Copyright 2017 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include "DomainConnectionModel.h"#include <QtCore/QLoggingCategory>#include <QtCore/QMetaMethod> #include <NodeList.h>#include <NumericalConstants.h> Q_LOGGING_CATEGORY(dcmodel, "hifi.dcmodel") DomainConnectionModel::DomainConnectionModel(QAbstractItemModel* parent) :    QAbstractItemModel(parent){} DomainConnectionModel::~DomainConnectionModel() {} QVariant DomainConnectionModel::data(const QModelIndex& index, int role) const {    //sanity    const QMap<quint64, LimitedNodeList::ConnectionStep> &times =            DependencyManager::get<NodeList>()->getLastConnectionTimes();     if (!index.isValid() || index.row() >= times.size())        return QVariant();     // setup our data with the values from the NodeList    quint64 firstStepTime = times.firstKey() / USECS_PER_MSEC;    quint64 timestamp = times.keys().at(index.row());     quint64 stepTime = timestamp / USECS_PER_MSEC;    quint64 delta = 0;//(stepTime - lastStepTime);    quint64 elapsed = 0;//stepTime - firstStepTime;     if (index.row() > 0) {        quint64 prevstepTime = times.keys().at(index.row() - 1) / USECS_PER_MSEC;        delta = (stepTime - prevstepTime);        elapsed = stepTime - firstStepTime;    }     if (role == Qt::DisplayRole || role == DisplayNameRole) {        const QMetaObject &nodeListMeta = NodeList::staticMetaObject;        QMetaEnum stepEnum = nodeListMeta.enumerator(nodeListMeta.indexOfEnumerator("ConnectionStep"));        int stepIndex = (int) times.value(timestamp);        return stepEnum.valueToKey(stepIndex);    } else if (role == DeltaRole) {        return delta;    } else if (role == TimestampRole) {        return stepTime;    } else if (role == TimeElapsedRole) {        return elapsed;    }    return QVariant();} int DomainConnectionModel::rowCount(const QModelIndex& parent) const {    Q_UNUSED(parent)    const QMap<quint64, LimitedNodeList::ConnectionStep> &times =            DependencyManager::get<NodeList>()->getLastConnectionTimes();    return times.size();} QHash<int, QByteArray> DomainConnectionModel::roleNames() const {    QHash<int, QByteArray> roles;    roles.insert(DisplayNameRole, "name");    roles.insert(TimestampRole, "timestamp");    roles.insert(DeltaRole, "delta");    roles.insert(TimeElapsedRole, "timeelapsed");    return roles;} QModelIndex DomainConnectionModel::index(int row, int column, const QModelIndex &parent) const{    Q_UNUSED(parent)    return createIndex(row, column);} QModelIndex DomainConnectionModel::parent(const QModelIndex &child) const{    Q_UNUSED(child)    return QModelIndex();} int DomainConnectionModel::columnCount(const QModelIndex &parent) const{    Q_UNUSED(parent)    return 1;} void DomainConnectionModel::refresh() {    //inform view that we want refresh data    beginResetModel();    endResetModel();}