magpie/models/assets.cpp

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//SPDX-FileCopyrightText: 2023 Yury Gubich <blue@macaw.me>
//SPDX-License-Identifier: GPL-3.0-or-later
#include "assets.h"
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#include "utils/helpers.h"
Models::Assets::Assets (QObject* parent):
QAbstractListModel(parent),
records(),
state(State::initial)
{}
void Models::Assets::clear () {
beginResetModel();
records.clear();
endResetModel();
}
void Models::Assets::addAsset (const Asset& asset) {
QModelIndex index = getIndex(asset.id);
if (index.isValid())
throw std::runtime_error("An attempt to insert a duplicating Asset to an asset model");
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beginInsertRows(QModelIndex(), records.size(), records.size());
records.push_back(asset);
endInsertRows();
}
void Models::Assets::addAssets (const std::deque<Asset>& assets) {
if (assets.empty())
return;
for (const Asset& asset : assets)
if (getIndex(asset.id).isValid())
throw std::runtime_error("An attempt to insert a duplicating Asset to an asset model (bulk)");
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beginInsertRows(QModelIndex(), records.size(), records.size() + assets.size() - 1);
for (const Asset& asset : assets)
records.push_back(asset);
endInsertRows();
}
void Models::Assets::deleteAsset (unsigned int id) {
QModelIndex index = getIndex(id);
if (!index.isValid())
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throw std::runtime_error("An attempt to delete non existing Asset from asset model");
int row = index.row();
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beginRemoveRows(QModelIndex(), row, row);
records.erase(records.begin() + row);
endRemoveRows();
}
int Models::Assets::rowCount (const QModelIndex& parent) const {
//For list models only the root node (an invalid parent) should return the
//list's size. For all other (valid) parents, rowCount() should return 0 so
//that it does not become a tree model.
if (parent.isValid())
return 0;
return records.size();
}
QHash<int, QByteArray> Models::Assets::roleNames () const {
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static const QHash<int, QByteArray> roleNames({
{Title, "title"}, {Icon, "icon"}, {Balance, "balance"}, {Archived, "archived"}, {Color, "color"}, {Id, "assetId"}
});
return roleNames;
}
bool Models::Assets::canFetchMore (const QModelIndex& parent) const {
return state == State::initial;
}
void Models::Assets::fetchMore (const QModelIndex& parent) {
if (state != State::initial)
return;
state = State::requesting;
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emit requestAssets();
}
QVariant Models::Assets::data (const QModelIndex& index, int role) const {
if (!index.isValid())
return QVariant();
int row = index.row();
if (row >= 0 && row < records.size()) {
switch (role) {
case Qt::DisplayRole:
case Title:
return records[row].title;
case Icon:
return records[row].icon;
case Balance:
return records[row].balance;
case Archived:
return records[row].archived;
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case Color:
return records[row].color;
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case Id:
return records[row].id;
}
}
return QVariant();
}
bool Models::Assets::deserialize (const QVariantList& from, std::deque<Asset>& out) {
for (const QVariant& item : from) {
if (!item.canConvert<QVariantMap>())
return false;
const QVariantMap& ser = qast<QVariantMap>(item);
Asset& asset = out.emplace_back();
asset.title = ser.value("title").toString();
asset.icon = ser.value("icon").toString();
asset.archived = ser.value("archived").toBool();
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asset.id = ser.value("id").toUInt();
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uint32_t color = ser.value("color").toUInt();
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asset.color = QColor::fromRgba(color);
}
return true;
}
void Models::Assets::receivedAssets (const std::deque<Asset>& assets) {
beginResetModel();
records = assets;
state = State::syncronized;
endResetModel();
}
QModelIndex Models::Assets::getIndex (unsigned int id) const {
for (std::size_t i = 0; i < records.size(); ++i) {
if (records[i].id == id)
return createIndex(i, 0, &records[i]);
}
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return QModelIndex();
}