listviewmodel.cpp

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//#
//# Copyright (C) 2020-2025 QuasarApp.
//# Distributed under the GPLv3 software license, see the accompanying
//# Everyone is permitted to copy and distribute verbatim copies
//# of this license document, but changing it is not allowed.
//#
 
#include "listviewmodel.h"
namespace ViewSolutions {
 
ListViewModel::ListViewModel(QObject *ptr):
    QAbstractListModel(ptr){
 
}
 
ListViewModel::~ListViewModel() {
    clear();
}
 
int ListViewModel::rowCount(const QModelIndex &) const {
    if (external())
        return _externalData->size();
 
    return _data.size();
}
 
QVariant ListViewModel::data(const QModelIndex &index, int role) const {
 
    if (index.row() < rowCount(index)) {
        if (static_cast<ListViewModelRoles>(role) == ListViewModelRoles::ModelData) {
            QObject *item = (external())? _externalData->value(index.row()) : _data.value(index.row());
            return QVariant::fromValue(item);
        }
    }
 
    return {};
}
 
QHash<int, QByteArray> ListViewModel::roleNames() const {
    QHash<int, QByteArray> roles;
    roles[static_cast<int>(ListViewModelRoles::ModelData)] = "modelData";
 
    return roles;
}
 
void ListViewModel::setExternalSource(const QList<QObject *> *newData) {
    if (external()) {
        beginResetModel();
        _externalData = newData;
        endResetModel();
    } else {
        _externalData = newData;
    }
 
    setExternal(true);
 
}
 
void ListViewModel::setSource(const QList<QObject*> &newData) {
 
    if (!external()) {
        beginResetModel();
 
        clear(true);
        _data = newData;
 
        endResetModel();
    } else {
        clear(true);
        _data = newData;
    }
 
    setExternal(false);
}
 
void ListViewModel::addSource(QObject* data) {
    if (!external()) {
        beginInsertRows(QModelIndex(), rowCount(), rowCount());
        _data.push_back(data);
        endInsertRows();
    } else {
        _data.push_back(data);
    }
}
 
void ListViewModel::clear(bool fast) {
    for (auto i : std::as_const(_data)) {
        if (fast) {
            i->deleteLater();
        } else {
            delete i;
        }
    }
 
    _data.clear();
}
 
bool ListViewModel::external() const {
    return _external;
}
 
void ListViewModel::setExternal(bool external) {
    if (external != _external) {
        beginResetModel();
        _external = external;
        endResetModel();
    }
}
 
}