1/* Copyright (c) 2013-2015 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#include "CheatsModel.h"
  7
  8#include "LogController.h"
  9#include "VFileDevice.h"
 10
 11#include <QSet>
 12
 13#include <mgba/core/cheats.h>
 14#include <mgba-util/vfs.h>
 15
 16using namespace QGBA;
 17
 18CheatsModel::CheatsModel(mCheatDevice* device, QObject* parent)
 19	: QAbstractItemModel(parent)
 20	, m_device(device)
 21{
 22	m_font.setFamily("Source Code Pro");
 23	m_font.setStyleHint(QFont::Monospace);
 24}
 25
 26QVariant CheatsModel::data(const QModelIndex& index, int role) const {
 27	if (!index.isValid()) {
 28		return QVariant();
 29	}
 30
 31	if (index.parent().isValid()) {
 32		int row = index.row();
 33		mCheatSet* cheats = static_cast<mCheatSet*>(index.internalPointer());
 34		const char* line = *StringListGetPointer(&cheats->lines, row);
 35		switch (role) {
 36		case Qt::DisplayRole:
 37			return line;
 38		case Qt::FontRole:
 39			return m_font;
 40		default:
 41			return QVariant();
 42		}
 43	}
 44
 45	if (index.row() >= mCheatSetsSize(&m_device->cheats)) {
 46		return QVariant();
 47	}
 48
 49	int row = index.row();
 50	const mCheatSet* cheats = *mCheatSetsGetPointer(&m_device->cheats, index.row());
 51	switch (role) {
 52	case Qt::DisplayRole:
 53	case Qt::EditRole:
 54		return cheats->name ? cheats->name : tr("(untitled)");
 55	case Qt::CheckStateRole:
 56		return cheats->enabled ? Qt::Checked : Qt::Unchecked;
 57	default:
 58		return QVariant();
 59	}
 60}
 61
 62bool CheatsModel::setData(const QModelIndex& index, const QVariant& value, int role) {
 63	if (!index.isValid() || index.parent().isValid() || index.row() > mCheatSetsSize(&m_device->cheats)) {
 64		return false;
 65	}
 66
 67	int row = index.row();
 68	mCheatSet* cheats = *mCheatSetsGetPointer(&m_device->cheats, index.row());
 69	switch (role) {
 70	case Qt::DisplayRole:
 71	case Qt::EditRole:
 72		mCheatSetRename(cheats, value.toString().toUtf8().constData());
 73		emit dataChanged(index, index);
 74		return true;
 75	case Qt::CheckStateRole:
 76		cheats->enabled = value == Qt::Checked;
 77		emit dataChanged(index, index);
 78		return true;
 79	default:
 80		return false;
 81	}
 82}
 83
 84QModelIndex CheatsModel::index(int row, int column, const QModelIndex& parent) const {
 85	if (parent.isValid()) {
 86		return createIndex(row, column, *mCheatSetsGetPointer(&m_device->cheats, parent.row()));
 87	} else {
 88		return createIndex(row, column, nullptr);
 89	}
 90}
 91
 92QModelIndex CheatsModel::parent(const QModelIndex& index) const {
 93	if (!index.isValid()) {
 94		return QModelIndex();
 95	}
 96	const mCheatSet* cheats = static_cast<const mCheatSet*>(index.internalPointer());
 97	if (!cheats) {
 98		return QModelIndex();
 99	}
100	for (size_t i = 0; i < mCheatSetsSize(&m_device->cheats); ++i) {
101		if (cheats == *mCheatSetsGetPointer(&m_device->cheats, i)) {
102			return createIndex(i, 0, nullptr);
103		}
104	}
105	return QModelIndex();
106}
107
108Qt::ItemFlags CheatsModel::flags(const QModelIndex& index) const {
109	if (!index.isValid()) {
110		return 0;
111	}
112
113	if (index.parent().isValid()) {
114		return Qt::ItemIsEnabled | Qt::ItemIsSelectable;
115	}
116
117	return Qt::ItemIsUserCheckable | Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
118}
119
120int CheatsModel::columnCount(const QModelIndex& parent) const {
121	return 1;
122}
123
124int CheatsModel::rowCount(const QModelIndex& parent) const {
125	if (parent.isValid()) {
126		if (parent.internalPointer()) {
127			return 0;
128		}
129		const mCheatSet* set = *mCheatSetsGetPointer(&m_device->cheats, parent.row());
130		return StringListSize(&set->lines);
131	}
132	return mCheatSetsSize(&m_device->cheats);
133}
134
135mCheatSet* CheatsModel::itemAt(const QModelIndex& index) {
136	if (!index.isValid()) {
137		return nullptr;
138	}
139	if (index.parent().isValid()) {
140		return static_cast<mCheatSet*>(index.internalPointer());
141	}
142	if (index.row() >= mCheatSetsSize(&m_device->cheats)) {
143		return nullptr;
144	}
145	return *mCheatSetsGetPointer(&m_device->cheats, index.row());
146}
147
148void CheatsModel::removeAt(const QModelIndex& index) {
149	if (!index.isValid() || index.parent().isValid() || index.row() >= mCheatSetsSize(&m_device->cheats)) {
150		return;
151	}
152	int row = index.row();
153	mCheatSet* set = *mCheatSetsGetPointer(&m_device->cheats, index.row());
154	beginRemoveRows(QModelIndex(), row, row);
155	mCheatRemoveSet(m_device, set);
156	mCheatSetDeinit(set);
157	endInsertRows();
158}
159
160QString CheatsModel::toString(const QModelIndexList& indices) const {
161	QMap<int, mCheatSet*> setOrder;
162	QMap<mCheatSet*, QSet<size_t>> setIndices;
163	for (const QModelIndex& index : indices) {
164		mCheatSet* set = static_cast<mCheatSet*>(index.internalPointer());
165		if (!set) {
166			set = *mCheatSetsGetPointer(&m_device->cheats, index.row());
167			setOrder[index.row()] = set;
168			QSet<size_t> range;
169			for (size_t i = 0; i < StringListSize(&set->lines); ++i) {
170				range.insert(i);
171			}
172			setIndices[set] = range;
173		} else {
174			setOrder[index.parent().row()] = set;
175			setIndices[set].insert(index.row());
176		}
177	}
178
179	QStringList strings;
180	QList<int> order = setOrder.keys();
181	std::sort(order.begin(), order.end());
182	for (int i : order) {
183		mCheatSet* set = setOrder[i];
184		QList<size_t> indexOrdex = setIndices[set].toList();
185		std::sort(indexOrdex.begin(), indexOrdex.end());
186		for (size_t j : indexOrdex) {
187			strings.append(*StringListGetPointer(&set->lines, j));
188		}
189	}
190
191	return strings.join('\n');
192}
193
194void CheatsModel::beginAppendRow(const QModelIndex& index) {
195	if (index.parent().isValid()) {
196		beginInsertRows(index.parent(), rowCount(index.parent()), rowCount(index.parent()));
197		return;
198	}
199	beginInsertRows(index, rowCount(index), rowCount(index));
200}
201
202void CheatsModel::endAppendRow() {
203	endInsertRows();
204}
205
206void CheatsModel::loadFile(const QString& path) {
207	VFile* vf = VFileDevice::open(path, O_RDONLY);
208	if (!vf) {
209		LOG(QT, WARN) << tr("Failed to open cheats file: %1").arg(path);
210		return;
211	}
212	beginResetModel();
213	mCheatParseFile(m_device, vf);
214	endResetModel();
215	vf->close(vf);
216}
217
218void CheatsModel::saveFile(const QString& path) {
219	VFile* vf = VFileDevice::open(path, O_TRUNC | O_CREAT | O_WRONLY);
220	if (!vf) {
221		return;
222	}
223	mCheatSaveFile(m_device, vf);
224	vf->close(vf);
225}
226
227void CheatsModel::addSet(mCheatSet* set) {
228	beginInsertRows(QModelIndex(), mCheatSetsSize(&m_device->cheats), mCheatSetsSize(&m_device->cheats));
229	size_t size = mCheatSetsSize(&m_device->cheats);
230	if (size) {
231		set->copyProperties(set, *mCheatSetsGetPointer(&m_device->cheats, size - 1));
232	}
233	mCheatAddSet(m_device, set);
234	endInsertRows();
235}
236
237void CheatsModel::invalidated() {
238	beginResetModel();
239	endResetModel();
240}