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

27enum CategoryColumn {

28 ID,

29 DISPLAY_NAME,

30 ICON_HINT,

31 RENDERER_NAME,

32 HINTS

33};

35Categories::Categories(QObject* parent)

36 : DeeListModel(parent)

37{

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

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

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

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

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

43 m_roles[Categories::RoleRendererHint] = "rendererHint";

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

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

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

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

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

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

51 // change of the search term harder to reproduce

52 m_timer.setSingleShot(true);

53 m_timer.setInterval(50);

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

55}

57DeeListModel*

58Categories::getResults(int index) const

59{

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

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

62 results->setCategoryIndex(index);

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

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

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

67 if (unity_results) {

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

69 } else {

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

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

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

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

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

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

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

77 }

79 m_results.insert(index, results);

80 }

82 return m_results[index];

83}

85void Categories::onCategoriesModelChanged(unity::glib::Object<DeeModel> model)

86{

87 m_updatedCategories.clear();

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

89 Q_FOREACH(DeeListModel* model, m_results) {

90 delete model;

91 }

92 m_results.clear();

94 setModel(model);

95}

97void Categories::onCategoryOrderChanged(const std::vector<unsigned int>& cat_order)

98{

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

100 {

101 unsigned int cat = cat_order[pos];

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

103

104 if (old_pos < 0) {

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

106 continue;

107 }

108

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

110 int target_pos = pos;

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

112 if (status)

113 m_categoryOrder.move(old_pos, pos);

114 else

115 qWarning("beginMoveRows failed");

116 endMoveRows();

117 }

118 }

119}

120

121void

122Categories::setUnityScope(const unity::dash::Scope::Ptr& scope)

123{

124 m_unityScope = scope;

125

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

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

128

129 m_signals.disconnectAll();

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

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

132}

133

134void

135Categories::onCountChanged()

136{

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

138 if (results) {

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

140 m_updatedCategories << results->categoryIndex();

141 }

142 m_timer.start();

143 }

144}

145

146void Categories::onRowCountChanged()

147{

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

149 // find the corresponding category index

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

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

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

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

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

155 QVector<int> roles;

156 roles.append(RoleCount);

157 QModelIndex changedIndex = index(i);

158 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

159 break;

160 }

161 }

162 }

163}

164

165void

166Categories::onEmitCountChanged()

167{

168 QVector<int> roles;

169 roles.append(Categories::RoleCount);

170 Q_FOREACH(int categoryIndex, m_updatedCategories) {

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

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

173 const QModelIndex changedIndex = index(realIndex);

174 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

175 }

176 m_updatedCategories.clear();

177}

178

179QHash<int, QByteArray>

180Categories::roleNames() const

181{

182 return m_roles;

183}

184

185void Categories::onOverrideModelDestroyed()

186{

187 QObject* model = sender();

188 auto iter = m_overriddenCategories.begin();

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

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

191 iter = m_overriddenCategories.erase(iter);

192 continue;

193 }

194 ++iter;

195 }

196}

197

198void Categories::overrideResults(const QString& categoryId, QAbstractItemModel* model)

199{

200 m_overriddenCategories[categoryId] = model;

201 // watch the model

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

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

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

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

206

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

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

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

210 if (id != categoryId) continue;

211 QVector<int> roles;

212 roles.append(RoleCount);

213 roles.append(RoleResults);

214 QModelIndex changedIndex = index(i);

215 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

216 break;

217 }

218}

219

220QVariant

221Categories::data(const QModelIndex& index, int role) const

222{

223 if (!index.isValid()) {

224 return QVariant();

225 }

226

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

228 {

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

230 m_categoryOrder.clear();

231 const unsigned int lim = rowCount();

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

233 m_categoryOrder.append(i);

234 }

235 }

236

237 int realRow = index.row();

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

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

240 } else {

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

242 return QVariant();

243 }

244

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

246

247 switch (role) {

248 case RoleCategoryId:

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

250 case RoleName:

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

252 case RoleIcon:

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

254 case RoleRenderer:

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

256 case RoleContentType:

257 {

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

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

260 }

261 case RoleRendererHint:

262 {

263 auto hints = DeeListModel::data(index, CategoryColumn::HINTS).toHash();

264 return hints.contains("renderer-hint") ? hints["renderer-hint"] : QVariant(QString());

265 }

266 case RoleProgressSource:

267 {

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

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

270 }

271 case RoleHints:

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

273 case RoleResults:

274 if (m_overriddenCategories.size() > 0)

275 {

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

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

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

279 }

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

281 case RoleCount:

282 if (m_overriddenCategories.size() > 0)

283 {

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

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

286 {

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

288 }

289 }

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

291 default:

292 return QVariant();

293 }

294}