Begin adding space child managementcreateSpaces

16 files changed, 518 insertions, 4 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 57bb74b6..c8ccfe7f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -375,6 +375,7 @@ set(SRC_FILES
 	src/SSOHandler.cpp
 	src/CombinedImagePackModel.cpp
 	src/SingleImagePackModel.cpp
+	src/SpaceChildrenModel.cpp
 	src/ImagePackListModel.cpp
 	src/TrayIcon.cpp
 	src/UserSettingsPage.cpp
@@ -570,6 +571,7 @@ qt5_wrap_cpp(MOC_HEADERS
 	src/RoomsModel.h
 	src/SSOHandler.h
 	src/SingleImagePackModel.h
+	src/SpaceChildrenModel.h
 	src/TrayIcon.h
 	src/UserSettingsPage.h
 	src/UsersModel.h
diff --git a/resources/qml/Root.qml b/resources/qml/Root.qml
index 72f30b7a..71b29bd1 100644
--- a/resources/qml/Root.qml
+++ b/resources/qml/Root.qml
@@ -60,6 +60,14 @@ Pane {
     }
 
     Component {
+        id: spaceChildrenComponent
+
+        SpaceChildren {
+        }
+
+    }
+
+    Component {
         id: roomMembersComponent
 
         RoomMembers {
@@ -265,6 +273,15 @@ Pane {
             destroyOnClose(roomSettings);
         }
 
+        function onOpenSpaceChildrenDialog(spaceChildren, nonChildren) {
+            var spaceChildrenDialog = spaceChildrenComponent.createObject(timelineRoot, {
+                "spaceChildren": spaceChildren,
+                "nonChildren": nonChildren
+            });
+            spaceChildrenDialog.show();
+            destroyOnClose(spaceChildrenDialog);
+        }
+
         function onOpenInviteUsersDialog(invitees) {
             var dialog = inviteDialog.createObject(timelineRoot, {
                 "roomId": Rooms.currentRoom.roomId,
diff --git a/resources/qml/dialogs/RoomSettings.qml b/resources/qml/dialogs/RoomSettings.qml
index 110475c7..e00b91a5 100644
--- a/resources/qml/dialogs/RoomSettings.qml
+++ b/resources/qml/dialogs/RoomSettings.qml
@@ -363,6 +363,18 @@ ApplicationWindow {
                 }
 
                 Item {
+                    Layout.fillWidth: true
+                    visible: roomSettings.isSpace
+                }
+
+                Button {
+                    visible: roomSettings.isSpace
+                    text: qsTr("Manage space children")
+                    Layout.alignment: Qt.AlignRight
+                    onClicked: TimelineManager.openSpaceChildren(roomSettings.roomId)
+                }
+
+                Item {
                     // for adding extra space between sections
                     Layout.fillWidth: true
                 }
diff --git a/resources/qml/dialogs/SpaceChildren.qml b/resources/qml/dialogs/SpaceChildren.qml
new file mode 100644
index 00000000..63fda3e4
--- /dev/null
+++ b/resources/qml/dialogs/SpaceChildren.qml
@@ -0,0 +1,188 @@
+// SPDX-FileCopyrightText: 2021 Nheko Contributors
+// SPDX-FileCopyrightText: 2022 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+import ".."
+import QtQuick 2.15
+import QtQuick.Controls 2.3
+import QtQuick.Layouts 1.2
+import QtQuick.Window 2.13
+import im.nheko 1.0
+
+ApplicationWindow {
+    id: spaceChildrenDialog
+
+    property SpaceChildrenModel spaceChildren
+    property NonSpaceChildrenModel nonChildren
+
+    minimumWidth: 340
+    minimumHeight: 450
+    width: 450
+    height: 680
+    palette: Nheko.colors
+    color: Nheko.colors.window
+    modality: Qt.NonModal
+    flags: Qt.Dialog | Qt.WindowCloseButtonHint | Qt.WindowTitleHint
+    title: qsTr("Space children")
+
+    Shortcut {
+        sequence: StandardKey.Cancel
+        onActivated: spaceChildrenDialog.close()
+    }
+
+    ScrollHelper {
+        flickable: flickable
+        anchors.fill: flickable
+    }
+
+    ColumnLayout {
+        id: contentLayout
+        anchors.fill: parent
+        anchors.margins: Nheko.paddingMedium
+        spacing: Nheko.paddingMedium
+
+        Label {
+            color: Nheko.colors.text
+            horizontalAlignment: Label.AlignHCenter
+            Layout.alignment: Qt.AlignHCenter
+            Layout.fillWidth: true
+            text: qsTr("Children of %1").arg(spaceChildren.space.roomName)
+            wrapMode: Text.Wrap
+            font.pointSize: fontMetrics.font.pointSize * 1.5
+        }
+
+        ListView {
+            id: childrenList
+
+            Layout.fillWidth: true
+            Layout.fillHeight: true
+            model: spaceChildren
+            spacing: Nheko.paddingMedium
+            clip: true
+
+            ScrollHelper {
+                flickable: parent
+                anchors.fill: parent
+            }
+
+            delegate: RowLayout {
+                id: childDel
+
+                required property string id
+                required property string roomName
+                required property string avatarUrl
+                required property string alias
+
+                spacing: Nheko.paddingMedium
+                width: ListView.view.width
+
+                Avatar {
+                    Layout.alignment: Qt.AlignVCenter
+                    Layout.rightMargin: Nheko.paddingMedium
+                    width: Nheko.avatarSize
+                    height: Nheko.avatarSize
+                    url: childDel.avatarUrl.replace("mxc://", "image://MxcImage/")
+                    roomid: childDel.id
+                    displayName: childDel.roomName
+                }
+
+                ColumnLayout {
+                    spacing: Nheko.paddingMedium
+
+                    Label {
+                        font.bold: true
+                        text: childDel.roomName
+                    }
+
+                    Label {
+                        text: childDel.alias
+                        visible: childDel.alias
+                        color: Nheko.inactiveColors.text
+                    }
+                }
+
+                Item { Layout.fillWidth: true }
+
+                ImageButton {
+                    image: ":/icons/icons/ui/delete.svg"
+                    onClicked: Nheko.removeRoomFromSpace(childDel.id, spaceChildren.space.roomId)
+                }
+            }
+        }
+
+        Label {
+            color: Nheko.colors.text
+            horizontalAlignment: Label.AlignHCenter
+            Layout.alignment: Qt.AlignHCenter
+            Layout.fillWidth: true
+            text: qsTr("Add rooms to %1").arg(spaceChildren.space.roomName)
+            wrapMode: Text.Wrap
+            font.pointSize: fontMetrics.font.pointSize * 1.5
+        }
+
+        ListView {
+            id: nonChildrenList
+
+            Layout.fillWidth: true
+            Layout.fillHeight: true
+            model: nonChildren
+            spacing: Nheko.paddingMedium
+            clip: true
+
+            ScrollHelper {
+                flickable: parent
+                anchors.fill: parent
+            }
+
+            delegate: RowLayout {
+                id: nonChildDel
+
+                required property string id
+                required property string roomName
+                required property string avatarUrl
+                required property string alias
+
+                spacing: Nheko.paddingMedium
+                width: ListView.view.width
+
+                Avatar {
+                    Layout.alignment: Qt.AlignVCenter
+                    Layout.rightMargin: Nheko.paddingMedium
+                    width: Nheko.avatarSize
+                    height: Nheko.avatarSize
+                    url: nonChildDel.avatarUrl.replace("mxc://", "image://MxcImage/")
+                    roomid: nonChildDel.id
+                    displayName: nonChildDel.roomName
+                }
+
+                ColumnLayout {
+                    spacing: Nheko.paddingMedium
+
+                    Label {
+                        font.bold: true
+                        text: nonChildDel.roomName
+                    }
+
+                    Label {
+                        text: nonChildDel.alias
+                        visible: nonChildDel.alias
+                        color: Nheko.inactiveColors.text
+                    }
+                }
+
+                Item { Layout.fillWidth: true }
+
+                ImageButton {
+                    image: ":/icons/icons/ui/add-square-button.svg"
+                    onClicked: Nheko.addRoomToSpace(nonChildDel.id, spaceChildren.space.roomId)
+                }
+            }
+        }
+    }
+
+    footer: DialogButtonBox {
+        standardButtons: DialogButtonBox.Ok
+        onAccepted: close()
+    }
+}
diff --git a/resources/res.qrc b/resources/res.qrc
index 3ce63f42..0ccaad8c 100644
--- a/resources/res.qrc
+++ b/resources/res.qrc
@@ -177,6 +177,7 @@
         <file>qml/voip/PlaceCall.qml</file>
         <file>qml/voip/ScreenShare.qml</file>
         <file>qml/voip/VideoCall.qml</file>
+        <file>qml/dialogs/SpaceChildren.qml</file>
     </qresource>
     <qresource prefix="/media">
         <file>media/ring.ogg</file>
diff --git a/src/ChatPage.cpp b/src/ChatPage.cpp
index ccaf2926..d41972d6 100644
--- a/src/ChatPage.cpp
+++ b/src/ChatPage.cpp
@@ -748,6 +748,45 @@ ChatPage::joinRoomVia(const std::string &room_id,
 }
 
 void
+ChatPage::addRoomToSpace(const QString &roomId, const QString &spaceId)
+{
+    // Make sure that the user isn't trying to create an infinite loop. Granted, this is not
+    // perfect, since you could have a loop of the form "a => b => a => ...", but this is sufficient
+    // for now.
+    if (roomId == spaceId)
+        return;
+
+    mtx::events::state::space::Child child;
+    child.via = {roomId.splitRef(QStringLiteral(":")).last().toString().toStdString()};
+    http::client()->send_state_event(
+      roomId.toStdString(),
+      child,
+      [this](const mtx::responses::EventId &, mtx::http::RequestErr err) {
+          if (err) {
+              emit showNotification(tr("Failed to add room to space: %1")
+                                      .arg(QString::fromStdString(err->matrix_error.error)));
+          }
+      });
+}
+
+void
+ChatPage::removeRoomFromSpace(const QString &roomId, const QString &spaceId)
+{
+    auto childEvent = cache::client()->getStateEvent<mtx::events::state::space::Child>(
+      spaceId.toStdString(), "m.space.child");
+    if (childEvent.has_value())
+        http::client()->redact_event(
+          roomId.toStdString(),
+          childEvent->event_id,
+          [this](const mtx::responses::EventId &, mtx::http::RequestErr err) {
+              if (err) {
+                  emit showNotification(tr("Failed to remove room from space: %1")
+                                          .arg(QString::fromStdString(err->matrix_error.error)));
+              }
+          });
+}
+
+void
 ChatPage::createRoom(const mtx::requests::CreateRoom &req)
 {
     if (req.room_alias_name.find(":") != std::string::npos ||
diff --git a/src/ChatPage.h b/src/ChatPage.h
index 2673a3de..131db288 100644
--- a/src/ChatPage.h
+++ b/src/ChatPage.h
@@ -94,6 +94,9 @@ public slots:
                      bool promptForConfirmation = true,
                      const QString &reason      = "");
 
+    void addRoomToSpace(const QString &roomId, const QString &spaceId);
+    void removeRoomFromSpace(const QString &roomId, const QString &spaceId);
+
     void inviteUser(QString userid, QString reason);
     void kickUser(QString userid, QString reason);
     void banUser(QString userid, QString reason);
diff --git a/src/MainWindow.cpp b/src/MainWindow.cpp
index ffc3c6c1..9f9dfa91 100644
--- a/src/MainWindow.cpp
+++ b/src/MainWindow.cpp
@@ -34,6 +34,7 @@
 #include "RoomDirectoryModel.h"
 #include "RoomsModel.h"
 #include "SingleImagePackModel.h"
+#include "SpaceChildrenModel.h"
 #include "TrayIcon.h"
 #include "UserSettingsPage.h"
 #include "UsersModel.h"
@@ -212,6 +213,18 @@ MainWindow::registerQmlTypes()
       0,
       "SingleImagePackModel",
       QStringLiteral("SingleImagePackModel needs to be instantiated on the C++ side"));
+    qmlRegisterUncreatableType<SpaceChildrenModel>(
+      "im.nheko",
+      1,
+      0,
+      "SpaceChildrenModel",
+      "SpaceChildrenModel needs to be instantiated on the C++ side");
+    qmlRegisterUncreatableType<NonSpaceChildrenModel>(
+      "im.nheko",
+      1,
+      0,
+      "NonSpaceChildrenModel",
+      "NonSpaceChildrenModel needs to be instantiated on the C++ side");
     qmlRegisterUncreatableType<InviteesModel>(
       "im.nheko",
       1,
diff --git a/src/SpaceChildrenModel.cpp b/src/SpaceChildrenModel.cpp
new file mode 100644
index 00000000..f71aa0dd
--- /dev/null
+++ b/src/SpaceChildrenModel.cpp
@@ -0,0 +1,106 @@
+// SPDX-FileCopyrightText: 2022 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "SpaceChildrenModel.h"
+
+#include "Cache.h"
+#include "Cache_p.h"
+
+SpaceChildrenModel::SpaceChildrenModel(QSharedPointer<TimelineModel> space, QObject *parent)
+  : QAbstractListModel{parent}
+  , m_space{space}
+{
+    auto joinedRooms = cache::joinedRooms();
+    for (const auto &child : cache::client()->getChildRoomIds(m_space->roomId().toStdString())) {
+        m_childIds.push_back(QString::fromStdString(child));
+
+        if (std::find(std::begin(joinedRooms), std::end(joinedRooms), child) !=
+            std::end(joinedRooms))
+            m_childInfos.push_back(cache::singleRoomInfo(child));
+        else // TODO: replace with code to fetch a non-joined room
+            m_childInfos.push_back(cache::singleRoomInfo(child));
+    }
+}
+
+QHash<int, QByteArray>
+SpaceChildrenModel::roleNames() const
+{
+    return {{Roles::Id, "id"},
+            {Roles::RoomName, "roomName"},
+            {Roles::AvatarUrl, "avatarUrl"},
+            {Roles::Alias, "alias"}};
+}
+
+QVariant
+SpaceChildrenModel::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid() || index.row() >= (int)m_childIds.size() || index.row() < 0)
+        return {};
+
+    switch (role) {
+    case Roles::Id:
+        return m_childIds[index.row()];
+    case Roles::RoomName:
+        return QString::fromStdString(m_childInfos[index.row()].name);
+    case Roles::AvatarUrl:
+        return QString::fromStdString(m_childInfos[index.row()].avatar_url);
+    case Roles::Alias: {
+        auto aliases = cache::client()->getRoomAliases(m_childIds[index.row()].toStdString());
+        if (aliases.has_value())
+            return QString::fromStdString(aliases->alias);
+        else
+            return {};
+    }
+    default:
+        return {};
+    }
+}
+
+NonSpaceChildrenModel::NonSpaceChildrenModel(QSharedPointer<TimelineModel> space, QObject *parent)
+  : QAbstractListModel{parent}
+  , m_space{space}
+{
+    auto children = cache::client()->getChildRoomIds(m_space->roomId().toStdString());
+    for (const auto &room : cache::joinedRooms()) {
+        if (room == space->roomId().toStdString() ||
+            std::find(std::begin(children), std::end(children), room) == std::end(children)) {
+            m_roomIds.push_back(QString::fromStdString(room));
+            m_roomInfos.push_back(cache::singleRoomInfo(room));
+        }
+    }
+}
+
+QHash<int, QByteArray>
+NonSpaceChildrenModel::roleNames() const
+{
+    return {{Roles::Id, "id"},
+            {Roles::RoomName, "roomName"},
+            {Roles::AvatarUrl, "avatarUrl"},
+            {Roles::Alias, "alias"}};
+}
+
+QVariant
+NonSpaceChildrenModel::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid() || index.row() >= (int)m_roomIds.size() || index.row() < 0)
+        return {};
+
+    switch (role) {
+    case Roles::Id:
+        return m_roomIds[index.row()];
+    case Roles::RoomName:
+        return QString::fromStdString(m_roomInfos[index.row()].name);
+    case Roles::AvatarUrl:
+        return QString::fromStdString(m_roomInfos[index.row()].avatar_url);
+    case Roles::Alias: {
+        auto aliases = cache::client()->getRoomAliases(m_roomIds[index.row()].toStdString());
+        if (aliases.has_value())
+            return QString::fromStdString(aliases->alias);
+        else
+            return {};
+    }
+    default:
+        return {};
+    }
+}
diff --git a/src/SpaceChildrenModel.h b/src/SpaceChildrenModel.h
new file mode 100644
index 00000000..1fce5aa4
--- /dev/null
+++ b/src/SpaceChildrenModel.h
@@ -0,0 +1,79 @@
+// SPDX-FileCopyrightText: 2022 Nheko Contributors
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef SPACECHILDRENMODEL_H
+#define SPACECHILDRENMODEL_H
+
+#include <QAbstractListModel>
+#include <QSharedPointer>
+
+#include "timeline/TimelineModel.h"
+
+class SpaceChildrenModel : public QAbstractListModel
+{
+    Q_OBJECT
+
+    Q_PROPERTY(TimelineModel *space READ space CONSTANT)
+
+public:
+    enum Roles
+    {
+        Id,
+        RoomName,
+        AvatarUrl,
+        Alias,
+    };
+
+    explicit SpaceChildrenModel(QSharedPointer<TimelineModel> space, QObject *parent = nullptr);
+
+    TimelineModel *space() const { return m_space.data(); }
+
+    int rowCount(const QModelIndex &parent) const override
+    {
+        Q_UNUSED(parent);
+        return m_childIds.size();
+    }
+    QHash<int, QByteArray> roleNames() const override;
+    QVariant data(const QModelIndex &index, int role) const override;
+
+private:
+    QSharedPointer<TimelineModel> m_space;
+    QStringList m_childIds;
+    QList<RoomInfo> m_childInfos;
+};
+
+class NonSpaceChildrenModel : public QAbstractListModel
+{
+    Q_OBJECT
+
+    Q_PROPERTY(TimelineModel *space READ space CONSTANT)
+
+public:
+    enum Roles
+    {
+        Id,
+        RoomName,
+        AvatarUrl,
+        Alias,
+    };
+
+    explicit NonSpaceChildrenModel(QSharedPointer<TimelineModel> space, QObject *parent = nullptr);
+
+    TimelineModel *space() const { return m_space.data(); }
+
+    int rowCount(const QModelIndex &parent) const override
+    {
+        Q_UNUSED(parent);
+        return m_roomIds.size();
+    }
+    QHash<int, QByteArray> roleNames() const override;
+    QVariant data(const QModelIndex &index, int role) const override;
+
+private:
+    QSharedPointer<TimelineModel> m_space;
+    QStringList m_roomIds;
+    QList<RoomInfo> m_roomInfos;
+};
+
+#endif // SPACECHILDRENMODEL_H
diff --git a/src/timeline/TimelineViewManager.cpp b/src/timeline/TimelineViewManager.cpp
index 3bccd8f3..4e2401e8 100644
--- a/src/timeline/TimelineViewManager.cpp
+++ b/src/timeline/TimelineViewManager.cpp
@@ -181,6 +181,16 @@ TimelineViewManager::openRoomSettings(QString room_id)
 }
 
 void
+TimelineViewManager::openSpaceChildren(const QString &spaceId)
+{
+    auto children    = new SpaceChildrenModel{rooms_->getRoomById(spaceId)};
+    auto nonChildren = new NonSpaceChildrenModel{rooms_->getRoomById(spaceId)};
+    QQmlEngine::setObjectOwnership(children, QQmlEngine::JavaScriptOwnership);
+    QQmlEngine::setObjectOwnership(nonChildren, QQmlEngine::JavaScriptOwnership);
+    emit openSpaceChildrenDialog(children, nonChildren);
+}
+
+void
 TimelineViewManager::openInviteUsers(QString roomId)
 {
     InviteesModel *model = new InviteesModel{};
diff --git a/src/timeline/TimelineViewManager.h b/src/timeline/TimelineViewManager.h
index 08943e8c..207824ec 100644
--- a/src/timeline/TimelineViewManager.h
+++ b/src/timeline/TimelineViewManager.h
@@ -17,6 +17,7 @@
 #include "Cache.h"
 #include "JdenticonProvider.h"
 #include "Logging.h"
+#include "SpaceChildrenModel.h"
 #include "TimelineModel.h"
 #include "Utils.h"
 #include "emoji/EmojiModel.h"
@@ -65,6 +66,7 @@ public:
 
     Q_INVOKABLE void openRoomMembers(TimelineModel *room);
     Q_INVOKABLE void openRoomSettings(QString room_id);
+    Q_INVOKABLE void openSpaceChildren(const QString &spaceId);
     Q_INVOKABLE void openInviteUsers(QString roomId);
     Q_INVOKABLE void openGlobalUserProfile(QString userId);
     Q_INVOKABLE UserProfile *getGlobalUserProfile(QString userId);
@@ -86,6 +88,7 @@ signals:
     void focusInput();
     void openRoomMembersDialog(MemberList *members, TimelineModel *room);
     void openRoomSettingsDialog(RoomSettings *settings);
+    void openSpaceChildrenDialog(SpaceChildrenModel *children, NonSpaceChildrenModel *nonChildren);
     void openInviteUsersDialog(InviteesModel *invitees);
     void openProfile(UserProfile *profile);
     void showImagePackSettings(TimelineModel *room, ImagePackListModel *packlist);
diff --git a/src/ui/NhekoGlobalObject.cpp b/src/ui/NhekoGlobalObject.cpp
index 9ffbb666..25d6465e 100644
--- a/src/ui/NhekoGlobalObject.cpp
+++ b/src/ui/NhekoGlobalObject.cpp
@@ -128,7 +128,12 @@ Nheko::logout() const
 }
 
 void
-Nheko::createRoom(QString name, QString topic, QString aliasLocalpart, bool isEncrypted, bool isSpace, int preset)
+Nheko::createRoom(QString name,
+                  QString topic,
+                  QString aliasLocalpart,
+                  bool isEncrypted,
+                  bool isSpace,
+                  int preset)
 {
     mtx::requests::CreateRoom req;
 
@@ -156,9 +161,21 @@ Nheko::createRoom(QString name, QString topic, QString aliasLocalpart, bool isEn
     }
 
     if (isSpace) {
-        req.creation_content = mtx::events::state::Create{};
+        req.creation_content       = mtx::events::state::Create{};
         req.creation_content->type = "m.space";
     }
 
     emit ChatPage::instance()->createRoom(req);
 }
+
+void
+Nheko::addRoomToSpace(const QString &roomId, const QString &spaceId)
+{
+    ChatPage::instance()->addRoomToSpace(roomId, spaceId);
+}
+
+void
+Nheko::removeRoomFromSpace(const QString &roomId, const QString &spaceId)
+{
+    ChatPage::instance()->removeRoomFromSpace(roomId, spaceId);
+}
diff --git a/src/ui/NhekoGlobalObject.h b/src/ui/NhekoGlobalObject.h
index 9e1cbd7e..742a5d93 100644
--- a/src/ui/NhekoGlobalObject.h
+++ b/src/ui/NhekoGlobalObject.h
@@ -52,8 +52,14 @@ public:
     Q_INVOKABLE void setStatusMessage(QString msg) const;
     Q_INVOKABLE void showUserSettingsPage() const;
     Q_INVOKABLE void logout() const;
-    Q_INVOKABLE void
-    createRoom(QString name, QString topic, QString aliasLocalpart, bool isEncrypted, bool isSpace, int preset);
+    Q_INVOKABLE void createRoom(QString name,
+                                QString topic,
+                                QString aliasLocalpart,
+                                bool isEncrypted,
+                                bool isSpace,
+                                int preset);
+    Q_INVOKABLE void addRoomToSpace(const QString &roomId, const QString &spaceId);
+    Q_INVOKABLE void removeRoomFromSpace(const QString &roomId, const QString &spaceId);
 
 public slots:
     void updateUserProfile();
diff --git a/src/ui/RoomSettings.cpp b/src/ui/RoomSettings.cpp
index 42db1955..12dc48fa 100644
--- a/src/ui/RoomSettings.cpp
+++ b/src/ui/RoomSettings.cpp
@@ -244,6 +244,19 @@ RoomSettings::canChangeAvatar() const
 }
 
 bool
+RoomSettings::canSetSpaceChild() const
+{
+    try {
+        return cache::hasEnoughPowerLevel(
+          {EventType::SpaceChild}, roomid_.toStdString(), utils::localUser().toStdString());
+    } catch (const lmdb::error &e) {
+        nhlog::db()->warn("lmdb error: {}", e.what());
+    }
+
+    return false;
+}
+
+bool
 RoomSettings::isEncryptionEnabled() const
 {
     return usesEncryption_;
diff --git a/src/ui/RoomSettings.h b/src/ui/RoomSettings.h
index 9912cfd6..7710941a 100644
--- a/src/ui/RoomSettings.h
+++ b/src/ui/RoomSettings.h
@@ -37,6 +37,7 @@ class RoomSettings : public QObject
     Q_PROPERTY(QString plainRoomName READ plainRoomName NOTIFY roomNameChanged)
     Q_PROPERTY(QString plainRoomTopic READ plainRoomTopic NOTIFY roomTopicChanged)
     Q_PROPERTY(QString roomAvatarUrl READ roomAvatarUrl NOTIFY avatarUrlChanged)
+    Q_PROPERTY(bool isSpace READ isSpace CONSTANT)
     Q_PROPERTY(int memberCount READ memberCount CONSTANT)
     Q_PROPERTY(int notifications READ notifications NOTIFY notificationsChanged)
     Q_PROPERTY(int accessJoinRules READ accessJoinRules NOTIFY accessJoinRulesChanged)
@@ -45,6 +46,7 @@ class RoomSettings : public QObject
     Q_PROPERTY(bool canChangeJoinRules READ canChangeJoinRules CONSTANT)
     Q_PROPERTY(bool canChangeName READ canChangeName CONSTANT)
     Q_PROPERTY(bool canChangeTopic READ canChangeTopic CONSTANT)
+    Q_PROPERTY(bool canSetSpaceChild READ canSetSpaceChild CONSTANT)
     Q_PROPERTY(bool isEncryptionEnabled READ isEncryptionEnabled NOTIFY encryptionChanged)
     Q_PROPERTY(bool supportsKnocking READ supportsKnocking CONSTANT)
     Q_PROPERTY(bool supportsRestricted READ supportsRestricted CONSTANT)
@@ -59,6 +61,7 @@ public:
     QString plainRoomTopic() const;
     QString roomVersion() const;
     QString roomAvatarUrl();
+    bool isSpace() const { return info_.is_space; }
     int memberCount() const;
     int notifications();
     int accessJoinRules();
@@ -71,6 +74,8 @@ public:
     bool canChangeTopic() const;
     //! Whether the user has enough power level to send m.room.avatar event.
     bool canChangeAvatar() const;
+    //! Whether the user has enough power level to add children to a space.
+    bool canSetSpaceChild() const;
     bool isEncryptionEnabled() const;
     bool supportsKnocking() const;
     bool supportsRestricted() const;