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();

93 setModel(model);

94}

96void

97Categories::setUnityScope(const unity::dash::Scope::Ptr& scope)

98{

99 m_unityScope = scope;

100

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

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

103

104 m_categoriesChangedConnection.disconnect();

105 m_categoriesChangedConnection =

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

107}

108

109void

110Categories::onCountChanged()

111{

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

113 if (results) {

114 m_updatedCategories << results->categoryIndex();

115 m_timer.start();

116 }

117}

118

119void Categories::onRowCountChanged()

120{

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

122 // find the corresponding category index

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

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

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

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

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

128 QVector<int> roles;

129 roles.append(RoleCount);

130 QModelIndex changedIndex = index(i);

131 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

132 break;

133 }

134 }

135 }

136}

137

138void

139Categories::onEmitCountChanged()

140{

141 QVector<int> roles;

142 roles.append(Categories::RoleCount);

143 Q_FOREACH(int categoryIndex, m_updatedCategories) {

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

145 QModelIndex changedIndex = index(categoryIndex);

146 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

147 }

148 m_updatedCategories.clear();

149}

150

151QHash<int, QByteArray>

152Categories::roleNames() const

153{

154 return m_roles;

155}

156

157void Categories::onOverrideModelDestroyed()

158{

159 QObject* model = sender();

160 auto iter = m_overriddenCategories.begin();

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

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

163 iter = m_overriddenCategories.erase(iter);

164 continue;

165 }

166 ++iter;

167 }

168}

169

170void Categories::overrideResults(const QString& categoryId, QAbstractItemModel* model)

171{

172 m_overriddenCategories[categoryId] = model;

173 // watch the model

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

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

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

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

178

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

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

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

182 if (id != categoryId) continue;

183 QVector<int> roles;

184 roles.append(RoleCount);

185 roles.append(RoleResults);

186 QModelIndex changedIndex = index(i);

187 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

188 break;

189 }

190}

191

192QVariant

193Categories::data(const QModelIndex& index, int role) const

194{

195 if (!index.isValid()) {

196 return QVariant();

197 }

198

199 switch (role) {

200 case RoleCategoryId:

201 return DeeListModel::data(index, CategoryColumn::ID);

202 case RoleName:

203 return DeeListModel::data(index, CategoryColumn::DISPLAY_NAME);

204 case RoleIcon:

205 return DeeListModel::data(index, CategoryColumn::ICON_HINT);

206 case RoleRenderer:

207 return DeeListModel::data(index, CategoryColumn::RENDERER_NAME);

208 case RoleContentType:

209 {

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

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

212 }

213 case RoleRendererHint:

214 {

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

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

217 }

218 case RoleProgressSource:

219 {

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

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

222 }

223 case RoleHints:

224 return DeeListModel::data(index, CategoryColumn::HINTS);

225 case RoleResults:

226 if (m_overriddenCategories.size() > 0)

227 {

228 auto id = DeeListModel::data(index, CategoryColumn::ID).toString();

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

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

231 }

232 return QVariant::fromValue(getResults(index.row()));

233 case RoleCount:

234 if (m_overriddenCategories.size() > 0)

235 {

236 auto id = DeeListModel::data(index, CategoryColumn::ID).toString();

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

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

239 }

240 return QVariant::fromValue(getResults(index.row())->rowCount());

241 default:

242 return QVariant();

243 }

244}