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/*
SPDX-FileCopyrightText: 2013-2016 Andreas Cord-Landwehr <cordlandwehr@kde.org>
SPDX-License-Identifier: LGPL-2.1-only OR LGPL-3.0-only OR LicenseRef-KDE-Accepted-LGPL
*/
#include "learninggoalmodel.h"
#include "learner.h"
#include "profilemanager.h"
#include <QSignalMapper>
#include "liblearner_debug.h"
#include <KLocalizedString>
using namespace LearnerProfile;
// private class LearningGoalModelPrivate
class LearningGoalModelPrivate
{
public:
LearningGoalModelPrivate()
: m_profileManager(nullptr)
, m_learner(nullptr)
, m_signalMapper(new QSignalMapper())
{
}
~LearningGoalModelPrivate()
{
delete m_signalMapper;
}
void updateGoals();
void updateMappings();
ProfileManager *m_profileManager;
Learner *m_learner;
QList<LearningGoal *> m_goals;
QSignalMapper *m_signalMapper;
};
void LearningGoalModelPrivate::updateGoals()
{
m_goals.clear();
// set all registered goals from profile manager
if (m_profileManager) {
foreach (LearningGoal *goal, m_profileManager->goals()) {
m_goals.append(goal);
}
}
// TODO add learner status information
}
void LearningGoalModelPrivate::updateMappings()
{
if (!m_profileManager) {
return;
}
int goals = m_goals.count();
for (int i = 0; i < goals; ++i) {
m_signalMapper->setMapping(m_goals.at(i), i);
}
}
// class LearningGoalModel
LearningGoalModel::LearningGoalModel(QObject *parent)
: QAbstractListModel(parent)
, d(new LearningGoalModelPrivate)
{
#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
connect(d->m_signalMapper, static_cast<void (QSignalMapper::*)(int)>(&QSignalMapper::mapped), this, &LearningGoalModel::emitLearningGoalChanged);
#else
connect(d->m_signalMapper, &QSignalMapper::mappedInt, this, &LearningGoalModel::emitLearningGoalChanged);
#endif
}
LearningGoalModel::~LearningGoalModel()
{
}
QHash<int, QByteArray> LearningGoalModel::roleNames() const
{
QHash<int, QByteArray> roles;
roles[TitleRole] = "title";
roles[IdRole] = "id";
roles[DataRole] = "dataRole";
return roles;
}
void LearningGoalModel::setProfileManager(ProfileManager *profileManager)
{
if (d->m_profileManager == profileManager) {
return;
}
beginResetModel();
if (d->m_profileManager) {
d->m_profileManager->disconnect(this);
}
d->m_profileManager = profileManager;
d->updateGoals();
d->updateMappings();
endResetModel();
emit profileManagerChanged();
}
ProfileManager *LearningGoalModel::profileManager() const
{
return d->m_profileManager;
}
Learner *LearningGoalModel::learner() const
{
return d->m_learner;
}
void LearningGoalModel::setLearner(Learner *learner)
{
if (!learner) {
return;
}
beginResetModel();
if (d->m_learner) {
learner->disconnect(this);
}
d->m_learner = learner;
d->updateGoals();
d->updateMappings();
connect(learner, &Learner::goalAboutToBeAdded, this, &LearningGoalModel::onLearningGoalAboutToBeAdded);
connect(learner, &Learner::goalAdded, this, &LearningGoalModel::onLearningGoalAdded);
connect(learner, &Learner::goalAboutToBeRemoved, this, &LearningGoalModel::onLearningGoalAboutToBeRemoved);
emit learnerChanged();
endResetModel();
}
QVariant LearningGoalModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid()) {
return QVariant();
}
if (index.row() >= d->m_goals.count()) {
return QVariant();
}
LearningGoal *const goal = d->m_goals.at(index.row());
switch (role) {
case Qt::DisplayRole:
return !goal->name().isEmpty() ? QVariant(goal->name()) : QVariant(i18nc("@item:inlistbox unknown learning goal", "unknown"));
case Qt::ToolTipRole:
return QVariant(goal->name());
case TitleRole:
return goal->name();
case IdRole:
return goal->identifier();
case DataRole:
return QVariant::fromValue<QObject *>(goal);
default:
return QVariant();
}
}
int LearningGoalModel::rowCount(const QModelIndex &parent) const
{
if (parent.isValid()) {
return 0;
}
return d->m_goals.count();
}
void LearningGoalModel::onLearningGoalAboutToBeAdded(LearningGoal *goal, int index)
{
Q_UNUSED(index)
beginInsertRows(QModelIndex(), d->m_goals.count(), d->m_goals.count());
d->m_goals.append(goal);
d->updateMappings();
}
void LearningGoalModel::onLearningGoalAdded()
{
endInsertRows();
}
void LearningGoalModel::onLearningGoalAboutToBeRemoved(int index)
{
if (!d->m_learner) {
return;
}
if (index < 0 || d->m_goals.count() <= index) {
qCWarning(LIBLEARNER_LOG) << "Cannot remove learning goal from model, not registered";
return;
}
beginRemoveRows(QModelIndex(), index, index);
d->m_goals.removeAt(index);
d->updateMappings();
endRemoveRows();
}
void LearningGoalModel::emitLearningGoalChanged(int row)
{
emit learningGoalChanged(row);
emit dataChanged(index(row, 0), index(row, 0));
}
QVariant LearningGoalModel::headerData(int section, Qt::Orientation orientation, int role) const
{
if (role != Qt::DisplayRole) {
return QVariant();
}
if (orientation == Qt::Vertical) {
return QVariant(section + 1);
}
return QVariant(i18nc("@title:column", "Learning Goal"));
}
QVariant LearningGoalModel::learningGoal(int row) const
{
return data(index(row, 0), LearningGoalModel::DataRole);
}
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