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::RoleProgressSource] = "progressSource";

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

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

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

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

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

50 // change of the search term harder to reproduce

51 m_timer.setSingleShot(true);

52 m_timer.setInterval(50);

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

54}

56DeeListModel*

57Categories::getResults(int index) const

58{

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

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

61 results->setCategoryIndex(index);

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

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

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

66 if (unity_results) {

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

68 } else {

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

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

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

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

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

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

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

76 }

78 m_results.insert(index, results);

79 }

81 return m_results[index];

82}

84void Categories::onCategoriesModelChanged(unity::glib::Object<DeeModel> model)

85{

86 m_updatedCategories.clear();

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

88 Q_FOREACH(DeeListModel* model, m_results) {

89 delete model;

90 }

91 m_results.clear();

92 setModel(model);

93}

96void Categories::onScopeResultsModelChanged(unity::glib::Object<DeeModel> /* model */)

97{

98 // if scope results model changes, we need to reset all category models

99 onCategoriesModelChanged(m_unityScope->categories()->model());

100}

101

102void

103Categories::setUnityScope(const unity::dash::Scope::Ptr& scope)

104{

105 m_unityScope = scope;

106

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

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

109

110 m_categoriesChangedConnection.disconnect();

111 m_categoriesChangedConnection =

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

113}

114

115void

116Categories::onCountChanged()

117{

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

119 if (results) {

120 m_updatedCategories << results->categoryIndex();

121 m_timer.start();

122 }

123}

124

125void Categories::onRowCountChanged()

126{

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

128 // find the corresponding category index

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

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

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

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

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

134 QVector<int> roles;

135 roles.append(RoleCount);

136 QModelIndex changedIndex = index(i);

137 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

138 break;

139 }

140 }

141 }

142}

143

144void

145Categories::onEmitCountChanged()

146{

147 QVector<int> roles;

148 roles.append(Categories::RoleCount);

149 Q_FOREACH(int categoryIndex, m_updatedCategories) {

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

151 QModelIndex changedIndex = index(categoryIndex);

152 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

153 }

154 m_updatedCategories.clear();

155}

156

157QHash<int, QByteArray>

158Categories::roleNames() const

159{

160 return m_roles;

161}

162

163void Categories::onOverrideModelDestroyed()

164{

165 QObject* model = sender();

166 auto iter = m_overriddenCategories.begin();

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

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

169 iter = m_overriddenCategories.erase(iter);

170 continue;

171 }

172 ++iter;

173 }

174}

175

176void Categories::overrideResults(const QString& categoryId, QAbstractItemModel* model)

177{

178 m_overriddenCategories[categoryId] = model;

179 // watch the model

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

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

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

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

184

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

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

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

188 if (id != categoryId) continue;

189 QVector<int> roles;

190 roles.append(RoleCount);

191 roles.append(RoleResults);

192 QModelIndex changedIndex = index(i);

193 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

194 break;

195 }

196}

197

198QVariant

199Categories::data(const QModelIndex& index, int role) const

200{

201 if (!index.isValid()) {

202 return QVariant();

203 }

204

205 switch (role) {

206 case RoleCategoryId:

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

208 case RoleName:

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

210 case RoleIcon:

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

212 case RoleRenderer:

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

214 case RoleContentType:

215 {

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

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

218 }

219 case RoleProgressSource:

220 {

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

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

223 }

224 case RoleHints:

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

226 case RoleResults:

227 if (m_overriddenCategories.size() > 0)

228 {

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

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

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

232 }

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

234 case RoleCount:

235 if (m_overriddenCategories.size() > 0)

236 {

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

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

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

240 }

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

242 default:

243 return QVariant();

244 }

245}