plugins/Unity/categories.cpp · unity8

git.iko.soy/unity8

on 86ecccc help sign in

unity8/plugins/Unity/categories.cpp

296 lines 11 kB history raw

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 if (target_pos > old_pos)

112 target_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:" << old_pos << target_pos;

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 QVector<int> roles;

158 roles.append(RoleCount);

159 QModelIndex changedIndex = index(i);

160 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

161 break;

162 }

163 }

164 }

165}

166

167void

168Categories::onEmitCountChanged()

169{

170 QVector<int> roles;

171 roles.append(Categories::RoleCount);

172 Q_FOREACH(int categoryIndex, m_updatedCategories) {

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

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

175 const QModelIndex changedIndex = index(realIndex);

176 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

177 }

178 m_updatedCategories.clear();

179}

180

181QHash<int, QByteArray>

182Categories::roleNames() const

183{

184 return m_roles;

185}

186

187void Categories::onOverrideModelDestroyed()

188{

189 QObject* model = sender();

190 auto iter = m_overriddenCategories.begin();

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

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

193 iter = m_overriddenCategories.erase(iter);

194 continue;

195 }

196 ++iter;

197 }

198}

199

200void Categories::overrideResults(const QString& categoryId, QAbstractItemModel* model)

201{

202 m_overriddenCategories[categoryId] = model;

203 // watch the model

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

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

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

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

208

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

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

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

212 if (id != categoryId) continue;

213 QVector<int> roles;

214 roles.append(RoleCount);

215 roles.append(RoleResults);

216 QModelIndex changedIndex = index(i);

217 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

218 break;

219 }

220}

221

222QVariant

223Categories::data(const QModelIndex& index, int role) const

224{

225 if (!index.isValid()) {

226 return QVariant();

227 }

228

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

230 {

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

232 m_categoryOrder.clear();

233 const unsigned int lim = rowCount();

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

235 m_categoryOrder.append(i);

236 }

237 }

238

239 int realRow = index.row();

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

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

242 } else {

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

244 return QVariant();

245 }

246

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

248

249 switch (role) {

250 case RoleCategoryId:

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

252 case RoleName:

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

254 case RoleIcon:

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

256 case RoleRenderer:

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

258 case RoleContentType:

259 {

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

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

262 }

263 case RoleRendererHint:

264 {

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

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

267 }

268 case RoleProgressSource:

269 {

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

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

272 }

273 case RoleHints:

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

275 case RoleResults:

276 if (m_overriddenCategories.size() > 0)

277 {

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

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

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

281 }

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

283 case RoleCount:

284 if (m_overriddenCategories.size() > 0)

285 {

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

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

288 {

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

290 }

291 }

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

293 default:

294 return QVariant();

295 }

296}