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

26enum CategoryColumn {

27 ID,

28 DISPLAY_NAME,

29 ICON_HINT,

30 RENDERER_NAME,

31 HINTS

32};

34Categories::Categories(QObject* parent)

35 : DeeListModel(parent)

36{

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

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

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

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

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

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

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

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

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

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

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

49 // change of the search term harder to reproduce

50 m_timer.setSingleShot(true);

51 m_timer.setInterval(50);

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

53}

55DeeListModel*

56Categories::getResults(int index) const

57{

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

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

60 results->setCategoryIndex(index);

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

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

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

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

67 m_results.insert(index, results);

68 }

70 return m_results[index];

71}

73void Categories::onCategoriesModelChanged(unity::glib::Object<DeeModel> model)

74{

75 m_updatedCategories.clear();

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

77 Q_FOREACH(DeeListModel* model, m_results) {

78 delete model;

79 }

80 m_results.clear();

81 setModel(model);

82}

84void

85Categories::setUnityScope(const unity::dash::Scope::Ptr& scope)

86{

87 m_unityScope = scope;

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

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

92 m_categoriesChangedConnection.disconnect();

93 m_categoriesChangedConnection =

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

95}

97void

98Categories::onCountChanged()

99{

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

101 if (results) {

102 m_updatedCategories << results->categoryIndex();

103 m_timer.start();

104 }

105}

106

107void Categories::onRowCountChanged()

108{

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

110 // find the corresponding category index

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

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

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

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

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

116 QVector<int> roles;

117 roles.append(RoleCount);

118 QModelIndex changedIndex = index(i);

119 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

120 break;

121 }

122 }

123 }

124}

125

126void

127Categories::onEmitCountChanged()

128{

129 QVector<int> roles;

130 roles.append(Categories::RoleCount);

131 Q_FOREACH(int categoryIndex, m_updatedCategories) {

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

133 QModelIndex changedIndex = index(categoryIndex);

134 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

135 }

136 m_updatedCategories.clear();

137}

138

139QHash<int, QByteArray>

140Categories::roleNames() const

141{

142 return m_roles;

143}

144

145void Categories::overrideResults(const QString& categoryId, QAbstractItemModel* model)

146{

147 m_overriddenCategories[categoryId] = model;

148 // TODO: change the parent of the model?

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

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

151

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

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

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

155 if (id != categoryId) continue;

156 QVector<int> roles;

157 roles.append(RoleCount);

158 roles.append(RoleResults);

159 QModelIndex changedIndex = index(i);

160 Q_EMIT dataChanged(changedIndex, changedIndex, roles);

161 break;

162 }

163}

164

165QVariant

166Categories::data(const QModelIndex& index, int role) const

167{

168 if (!index.isValid()) {

169 return QVariant();

170 }

171

172 switch (role) {

173 case RoleCategoryId:

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

175 case RoleName:

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

177 case RoleIcon:

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

179 case RoleRenderer:

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

181 case RoleContentType:

182 {

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

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

185 }

186 case RoleHints:

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

188 case RoleResults:

189 if (m_overriddenCategories.size() > 0)

190 {

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

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

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

194 }

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

196 case RoleCount:

197 if (m_overriddenCategories.size() > 0)

198 {

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

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

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

202 }

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

204 case RoleCategoryIndex:

205 return QVariant::fromValue(index.row());

206 default:

207 return QVariant();

208 }

209}