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"

25// Qt

26#include <QDebug>

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

29enum CategoryColumn {

30 ID,

31 DISPLAY_NAME,

32 ICON_HINT,

33 RENDERER_NAME,

34 HINTS

35};

37Categories::Categories(QObject* parent)

38 : DeeListModel(parent)

39{

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

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

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

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

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

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

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

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

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

49 m_roles[Categories::RoleCategoryIndex] = "categoryIndex";

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

71 m_results.insert(index, results);

72 }

74 return m_results[index];

75}

77void Categories::onCategoriesModelChanged(unity::glib::Object<DeeModel> model)

78{

79 m_updatedCategories.clear();

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

81 Q_FOREACH(DeeListModel* model, m_results) {

82 delete model;

83 }

84 m_results.clear();

86 setModel(model);

87}

89void Categories::onCategoryOrderChanged(std::vector<unsigned int> cat_order)

90{

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

92 {

93 unsigned int cat = cat_order[pos];

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

96 if (old_pos < 0) {

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

98 continue;

99 }

100

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

102 beginMoveRows(QModelIndex(), old_pos, old_pos, QModelIndex(), pos);

103 m_categoryOrder.move(old_pos, pos);

104 endMoveRows();

105 }

106 }

107}

108

109void

110Categories::setUnityScope(const unity::dash::Scope::Ptr& scope)

111{

112 m_unityScope = scope;

113

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

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

116

117 m_signals.disconnectAll();

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

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

120}

121

122void

123Categories::onCountChanged()

124{

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

126 if (results) {

127 m_updatedCategories << results->categoryIndex();

128 m_timer.start();

129 }

130}

131

132void Categories::onRowCountChanged()

133{

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

135 // find the corresponding category index

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

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

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

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

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

141 const int realIndex = m_categoryOrder.indexOf(i);

142 QVector<int> roles;

143 roles.append(RoleCount);

144 QModelIndex changedIndex = index(realIndex);

145 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

146 break;

147 }

148 }

149 }

150}

151

152void

153Categories::onEmitCountChanged()

154{

155 QVector<int> roles;

156 roles.append(Categories::RoleCount);

157 Q_FOREACH(int categoryIndex, m_updatedCategories) {

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

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

160 const QModelIndex changedIndex = index(realIndex);

161 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

162 }

163 m_updatedCategories.clear();

164}

165

166QHash<int, QByteArray>

167Categories::roleNames() const

168{

169 return m_roles;

170}

171

172void Categories::onOverrideModelDestroyed()

173{

174 QObject* model = sender();

175 auto iter = m_overriddenCategories.begin();

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

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

178 iter = m_overriddenCategories.erase(iter);

179 continue;

180 }

181 ++iter;

182 }

183}

184

185void Categories::overrideResults(const QString& categoryId, QAbstractItemModel* model)

186{

187 m_overriddenCategories[categoryId] = model;

188 // watch the model

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

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

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

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

193

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

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

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

197 if (id != categoryId) continue;

198 QVector<int> roles;

199 roles.append(RoleCount);

200 roles.append(RoleResults);

201 QModelIndex changedIndex = index(i);

202 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

203 break;

204 }

205}

206

207QVariant

208Categories::data(const QModelIndex& index, int role) const

209{

210 if (!index.isValid()) {

211 return QVariant();

212 }

213

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

215 {

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

217 m_categoryOrder.clear();

218 const unsigned int lim = rowCount();

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

220 m_categoryOrder.append(i);

221 }

222 }

223

224 int realRow = index.row();

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

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

227 } else {

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

229 return QVariant();

230 }

231

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

233

234 switch (role) {

235 case RoleCategoryId:

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

237 case RoleName:

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

239 case RoleIcon:

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

241 case RoleRenderer:

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

243 case RoleContentType:

244 {

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

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

247 }

248 case RoleProgressSource:

249 {

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

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

252 }

253 case RoleHints:

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

255 case RoleResults:

256 if (m_overriddenCategories.size() > 0)

257 {

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

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

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

261 }

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

263 case RoleCount:

264 if (m_overriddenCategories.size() > 0)

265 {

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

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

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

269 }

270 return QVariant::fromValue(getResults(realIndex.row())->rowCount());

271 case RoleCategoryIndex:

272 return QVariant::fromValue(index.row()); // no remapping to realIndex

273 default:

274 return QVariant();

275 }

276}