Make group's sidebar visible through an option

include/ChatPage.h

@@ -119,6 +119,8 @@ private:
         void loadStateFromCache();
         void deleteConfigs();
         void resetUI();
+        //! Decides whether or not to hide the group's sidebar.
+        void setGroupViewState(bool isEnabled);
 
         template<class Collection>
         Memberships getMemberships(const std::vector<Collection> &events) const;

include/UserSettingsPage.h

@@ -29,8 +29,10 @@ constexpr int OptionMargin       = 6;
 constexpr int LayoutTopMargin    = 50;
 constexpr int LayoutBottomMargin = LayoutTopMargin;
 
-class UserSettings
+class UserSettings : public QObject
 {
+        Q_OBJECT
+
 public:
         UserSettings();
 
@@ -50,14 +52,28 @@ public:
                 save();
         };
 
+        void setGroupView(bool state)
+        {
+                if (isGroupViewEnabled_ != state)
+                        emit groupViewStateChanged(state);
+
+                isGroupViewEnabled_ = state;
+                save();
+        };
+
         QString theme() const { return !theme_.isEmpty() ? theme_ : "light"; }
         bool isTrayEnabled() const { return isTrayEnabled_; }
         bool isOrderingEnabled() const { return isOrderingEnabled_; }
+        bool isGroupViewEnabled() const { return isGroupViewEnabled_; }
+
+signals:
+        void groupViewStateChanged(bool state);
 
 private:
         QString theme_;
         bool isTrayEnabled_;
         bool isOrderingEnabled_;
+        bool isGroupViewEnabled_;
 };
 
 class HorizontalLine : public QFrame
@@ -97,6 +113,7 @@ private:
 
         Toggle *trayToggle_;
         Toggle *roomOrderToggle_;
+        Toggle *groupViewToggle_;
 
         QComboBox *themeCombo_;
 

src/ChatPage.cc

@@ -369,6 +369,13 @@ ChatPage::ChatPage(QSharedPointer<MatrixClient> client,
                         }
                 });
 
+        setGroupViewState(userSettings_->isGroupViewEnabled());
+
+        connect(userSettings_.data(),
+                &UserSettings::groupViewStateChanged,
+                this,
+                &ChatPage::setGroupViewState);
+
         AvatarProvider::init(client);
 
         instance_ = this;
@@ -919,4 +926,17 @@ ChatPage::showReadReceipts(const QString &event_id)
         receiptsModal_->fadeIn();
 }
 
+void
+ChatPage::setGroupViewState(bool isEnabled)
+{
+        if (!isEnabled) {
+                communitiesList_->communityChanged("world");
+                communitiesSideBar_->hide();
+
+                return;
+        }
+
+        communitiesSideBar_->show();
+}
+
 ChatPage::~ChatPage() {}

src/UserSettingsPage.cc

@@ -35,6 +35,7 @@ UserSettings::load()
         QSettings settings;
         isTrayEnabled_      = settings.value("user/window/tray", true).toBool();
         isOrderingEnabled_  = settings.value("user/room_ordering", true).toBool();
+        isGroupViewEnabled_ = settings.value("user/group_view", true).toBool();
         theme_              = settings.value("user/theme", "light").toString();
 
         applyTheme();
@@ -82,6 +83,7 @@ UserSettings::save()
         settings.endGroup();
 
         settings.setValue("room_ordering", isOrderingEnabled_);
+        settings.setValue("group_view", isGroupViewEnabled_);
         settings.setValue("theme", theme());
         settings.endGroup();
 }
@@ -139,6 +141,17 @@ UserSettingsPage::UserSettingsPage(QSharedPointer<UserSettings> settings, QWidge
         orderRoomLayout->addWidget(orderLabel);
         orderRoomLayout->addWidget(roomOrderToggle_, 0, Qt::AlignBottom | Qt::AlignRight);
 
+        auto groupViewLayout = new QHBoxLayout;
+        groupViewLayout->setContentsMargins(0, OptionMargin, 0, OptionMargin);
+        auto groupViewLabel = new QLabel(tr("Group's sidebar"), this);
+        groupViewToggle_    = new Toggle(this);
+        groupViewToggle_->setActiveColor(QColor("#38A3D8"));
+        groupViewToggle_->setInactiveColor(QColor("gray"));
+        groupViewLabel->setStyleSheet("font-size: 15px;");
+
+        groupViewLayout->addWidget(groupViewLabel);
+        groupViewLayout->addWidget(groupViewToggle_, 0, Qt::AlignBottom | Qt::AlignRight);
+
         auto themeOptionLayout_ = new QHBoxLayout;
         themeOptionLayout_->setContentsMargins(0, OptionMargin, 0, OptionMargin);
         auto themeLabel_ = new QLabel(tr("App theme"), this);
@@ -164,6 +177,8 @@ UserSettingsPage::UserSettingsPage(QSharedPointer<UserSettings> settings, QWidge
         mainLayout_->addWidget(new HorizontalLine(this));
         mainLayout_->addLayout(orderRoomLayout);
         mainLayout_->addWidget(new HorizontalLine(this));
+        mainLayout_->addLayout(groupViewLayout);
+        mainLayout_->addWidget(new HorizontalLine(this));
         mainLayout_->addLayout(themeOptionLayout_);
         mainLayout_->addWidget(new HorizontalLine(this));
 
@@ -184,6 +199,10 @@ UserSettingsPage::UserSettingsPage(QSharedPointer<UserSettings> settings, QWidge
                 settings_->setRoomOrdering(!isDisabled);
         });
 
+        connect(groupViewToggle_, &Toggle::toggled, this, [=](bool isDisabled) {
+                settings_->setGroupView(!isDisabled);
+        });
+
         connect(backBtn_, &QPushButton::clicked, this, [=]() {
                 settings_->save();
                 emit moveBack();
@@ -194,8 +213,11 @@ void
 UserSettingsPage::showEvent(QShowEvent *)
 {
         restoreThemeCombo();
-        trayToggle_->setState(!settings_->isTrayEnabled());          // Treats true as "off"
+
-        roomOrderToggle_->setState(!settings_->isOrderingEnabled()); // Treats true as "off"
+        // FIXME: Toggle treats true as "off"
+        trayToggle_->setState(!settings_->isTrayEnabled());
+        roomOrderToggle_->setState(!settings_->isOrderingEnabled());
+        groupViewToggle_->setState(!settings_->isGroupViewEnabled());
 }
 
 void