plugins/Unity/categories.cpp · unity8

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unity8/plugins/Unity/categories.cpp

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1/*

3 *

4 * Authors:

5 * Michał Sawicz <michal.sawicz@canonical.com>

6 * Michal Hruby <michal.hruby@canonical.com>

7 *

8 * This program is free software; you can redistribute it and/or modify

9 * it under the terms of the GNU General Public License as published by

10 * the Free Software Foundation; version 3.

11 *

12 * This program is distributed in the hope that it will be useful,

13 * but WITHOUT ANY WARRANTY; without even the implied warranty of

14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

15 * GNU General Public License for more details.

16 *

17 * You should have received a copy of the GNU General Public License

18 * along with this program. If not, see <http://www.gnu.org/licenses/>.

19 */

21// self

22#include "categories.h"

23#include "categoryresults.h"

24#include <QDebug>

26// Qt

27#include <QDebug>

29// TODO: use something from libunity once it's public

30enum CategoryColumn {

31 ID,

32 DISPLAY_NAME,

33 ICON_HINT,

34 RENDERER_NAME,

35 HINTS

36};

38Categories::Categories(QObject* parent)

39 : DeeListModel(parent)

40{

41 m_roles[Categories::RoleCategoryId] = "categoryId";

42 m_roles[Categories::RoleName] = "name";

43 m_roles[Categories::RoleIcon] = "icon";

44 m_roles[Categories::RoleRenderer] = "renderer";

45 m_roles[Categories::RoleContentType] = "contentType";

46 m_roles[Categories::RoleProgressSource] = "progressSource";

47 m_roles[Categories::RoleHints] = "hints";

48 m_roles[Categories::RoleResults] = "results";

49 m_roles[Categories::RoleCount] = "count";

51 // TODO This should not be needed but accumulatting the count changes

52 // makes the visualization more stable and also makes crashes on fast

53 // change of the search term harder to reproduce

54 m_timer.setSingleShot(true);

55 m_timer.setInterval(50);

56 connect(&m_timer, &QTimer::timeout, this, &Categories::onEmitCountChanged);

57}

59DeeListModel*

60Categories::getResults(int index) const

61{

62 if (!m_results.contains(index)) {

63 CategoryResults* results = new CategoryResults(const_cast<Categories*>(this));

64 results->setCategoryIndex(index);

65 connect(results, &DeeListModel::countChanged, this, &Categories::onCountChanged);

67 unsigned categoryIndex = static_cast<unsigned>(index);

68 auto unity_results = m_unityScope->GetResultsForCategory(categoryIndex);

69 if (unity_results) {

70 results->setModel(unity_results->model());

71 } else {

72 // No results model returned by unity core; this can be the case when the global

73 // results model of this scope is still not set in unity core. Don't set backend

74 // model in DeeListModel - it will still beahve properly as an empty model. Since

75 // we're connected to the category model change signal, and it is set by unity core

76 // at the same time as results model (on channel opening), we'll reset category

77 // results models with proper models when we're notifed again.

78 qWarning() << "No results model for category" << categoryIndex;

79 }

81 m_results.insert(index, results);

82 }

84 return m_results[index];

85}

87void Categories::onCategoriesModelChanged(unity::glib::Object<DeeModel> model)

88{

89 m_updatedCategories.clear();

90 // FIXME: this might destroy the renderer view and re-create it, optimize?

91 Q_FOREACH(DeeListModel* model, m_results) {

92 delete model;

93 }

94 m_results.clear();

96 setModel(model);

97}

99void Categories::onCategoryOrderChanged(std::vector<unsigned int> cat_order)

100{

101 for (unsigned int pos = 0; pos<cat_order.size(); pos++)

102 {

103 unsigned int cat = cat_order[pos];

104 const int old_pos = m_categoryOrder.indexOf(cat);

105

106 if (old_pos < 0) {

107 qWarning() << "No such category index:" << cat;

108 continue;

109 }

110

111 if (static_cast<int>(pos) != old_pos) {

112 int target_pos = pos;

113 const bool status = beginMoveRows(QModelIndex(), old_pos, old_pos, QModelIndex(), target_pos);

114 if (status)

115 m_categoryOrder.move(old_pos, pos);

116 else

117 qWarning("beginMoveRows failed");

118 endMoveRows();

119 }

120 }

121}

122

123void

124Categories::setUnityScope(const unity::dash::Scope::Ptr& scope)

125{

126 m_unityScope = scope;

127

128 // no need to call this, we'll get notified

129 //setModel(m_unityScope->categories()->model());

130

131 m_signals.disconnectAll();

132 m_signals << m_unityScope->categories()->model.changed.connect(sigc::mem_fun(this, &Categories::onCategoriesModelChanged));

133 m_signals << m_unityScope->category_order.changed.connect(sigc::mem_fun(this, &Categories::onCategoryOrderChanged));

134}

135

136void

137Categories::onCountChanged()

138{

139 CategoryResults* results = qobject_cast<CategoryResults*>(sender());

140 if (results) {

141 if (!m_updatedCategories.contains(results->categoryIndex())) {

142 m_updatedCategories << results->categoryIndex();

143 }

144 m_timer.start();

145 }

146}

147

148void Categories::onRowCountChanged()

149{

150 QAbstractItemModel* model = qobject_cast<QAbstractItemModel*>(sender());

151 // find the corresponding category index

152 for (auto iter = m_overriddenCategories.begin(); iter != m_overriddenCategories.end(); ++iter) {

153 if (iter.value() == model) {

154 for (int i = 0; i < rowCount(); i++) {

155 auto id = data(index(i), RoleCategoryId).toString();

156 if (id != iter.key()) continue;

157 const int mappedIndex = m_categoryOrder.indexOf(i);

158 QVector<int> roles;

159 roles.append(RoleCount);

160 QModelIndex changedIndex = index(i);

161 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

162 break;

163 }

164 }

165 }

166}

167

168void

169Categories::onEmitCountChanged()

170{

171 QVector<int> roles;

172 roles.append(Categories::RoleCount);

173 Q_FOREACH(int categoryIndex, m_updatedCategories) {

174 if (!m_results.contains(categoryIndex)) continue;

175 const int realIndex = m_categoryOrder.indexOf(categoryIndex);

176 const QModelIndex changedIndex = index(realIndex);

177 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

178 }

179 m_updatedCategories.clear();

180}

181

182QHash<int, QByteArray>

183Categories::roleNames() const

184{

185 return m_roles;

186}

187

188void Categories::onOverrideModelDestroyed()

189{

190 QObject* model = sender();

191 auto iter = m_overriddenCategories.begin();

192 while (iter != m_overriddenCategories.end()) {

193 if (iter.value() == model) {

194 iter = m_overriddenCategories.erase(iter);

195 continue;

196 }

197 ++iter;

198 }

199}

200

201void Categories::overrideResults(const QString& categoryId, QAbstractItemModel* model)

202{

203 m_overriddenCategories[categoryId] = model;

204 // watch the model

205 connect(model, &QObject::destroyed, this, &Categories::onOverrideModelDestroyed);

206 connect(model, &QAbstractItemModel::rowsInserted, this, &Categories::onRowCountChanged);

207 connect(model, &QAbstractItemModel::rowsRemoved, this, &Categories::onRowCountChanged);

208 connect(model, &QAbstractItemModel::modelReset, this, &Categories::onRowCountChanged);

209

210 // emit the dataChanged signal if the category is already in the model

211 for (int i = 0; i < rowCount(); i++) {

212 auto id = data(index(i), RoleCategoryId).toString();

213 if (id != categoryId) continue;

214 QVector<int> roles;

215 roles.append(RoleCount);

216 roles.append(RoleResults);

217 QModelIndex changedIndex = index(i);

218 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

219 break;

220 }

221}

222

223QVariant

224Categories::data(const QModelIndex& index, int role) const

225{

226 if (!index.isValid()) {

227 return QVariant();

228 }

229

230 if (m_categoryOrder.size() != rowCount())

231 {

232 // populate category order vector with 0..n

233 m_categoryOrder.clear();

234 const unsigned int lim = rowCount();

235 for (unsigned int i = 0; i<lim; i++) {

236 m_categoryOrder.append(i);

237 }

238 }

239

240 int realRow = index.row();

241 if (index.row() < m_categoryOrder.size()) {

242 realRow = m_categoryOrder[index.row()];

243 } else {

244 qWarning() << "Invalid index" << index.row();

245 return QVariant();

246 }

247

248 const QModelIndex realIndex = createIndex(realRow, index.column());

249

250 switch (role) {

251 case RoleCategoryId:

252 return DeeListModel::data(realIndex, CategoryColumn::ID);

253 case RoleName:

254 return DeeListModel::data(realIndex, CategoryColumn::DISPLAY_NAME);

255 case RoleIcon:

256 return DeeListModel::data(realIndex, CategoryColumn::ICON_HINT);

257 case RoleRenderer:

258 return DeeListModel::data(realIndex, CategoryColumn::RENDERER_NAME);

259 case RoleContentType:

260 {

261 auto hints = DeeListModel::data(realIndex, CategoryColumn::HINTS).toHash();

262 return hints.contains("content-type") ? hints["content-type"] : QVariant(QString("default"));

263 }

264 case RoleProgressSource:

265 {

266 auto hints = DeeListModel::data(realIndex, CategoryColumn::HINTS).toHash();

267 return hints.contains("progress-source") ? hints["progress-source"] : QVariant();

268 }

269 case RoleHints:

270 return DeeListModel::data(realIndex, CategoryColumn::HINTS);

271 case RoleResults:

272 if (m_overriddenCategories.size() > 0)

273 {

274 auto id = DeeListModel::data(realIndex, CategoryColumn::ID).toString();

275 if (m_overriddenCategories.find(id) != m_overriddenCategories.end())

276 return QVariant::fromValue(m_overriddenCategories[id]);

277 }

278 return QVariant::fromValue(getResults(realRow));

279 case RoleCount:

280 if (m_overriddenCategories.size() > 0)

281 {

282 auto id = DeeListModel::data(realIndex, CategoryColumn::ID).toString();

283 if (m_overriddenCategories.find(id) != m_overriddenCategories.end())

284 {

285 return QVariant::fromValue(m_overriddenCategories[id]->rowCount());

286 }

287 }

288 return QVariant::fromValue(getResults(realRow)->rowCount());

289 default:

290 return QVariant();

291 }

292}