Add new session button to SessionsModel

Summary:
This (optionally) appends an entry to the SessionsModel to append a "New
Session" option. The lock screen / user switcher are then modified to
use it.

Messages.sh is modified so all components are covered by the same pot.

Reviewers: #plasma

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D2594

components/CMakeLists.txt

@@ -1,4 +1,6 @@
+add_definitions(-DTRANSLATION_DOMAIN=\"plasmashellprivateplugin\")
+
 install(DIRECTORY workspace/ DESTINATION ${KDE_INSTALL_QMLDIR}/org/kde/plasma/workspace/components)
 add_subdirectory(shellprivate)
 add_subdirectory(keyboardlayout)
-add_subdirectory(sessionsprivate)
+add_subdirectory(sessionsprivate)

components/sessionsprivate/CMakeLists.txt

@@ -17,6 +17,7 @@ target_link_libraries(sessionsprivateplugin
     KF5::CoreAddons
     KF5::ConfigCore
     KF5::ConfigGui
+    KF5::I18n
     PW::KWorkspace
 )
 

components/sessionsprivate/sessionsmodel.cpp

@@ -24,6 +24,7 @@
 
 #include <KAuthorized>
 #include <KUser>
+#include <KLocalizedString>
 
 #include "kscreensaversettings.h"
 
@@ -74,7 +75,12 @@ bool SessionsModel::shouldLock() const
 
 void SessionsModel::switchUser(int vt, bool shouldLock)
 {
-    if (!canSwitchUser() || vt <= 0) {
+    if (vt < 0) {
+        startNewSession(shouldLock);
+        return;
+    }
+
+    if (!canSwitchUser()) {
         return;
     }
 
@@ -188,12 +194,45 @@ void SessionsModel::checkScreenLocked(const std::function<void (bool)> &cb)
     });
 }
 
+void SessionsModel::setShowNewSessionEntry(bool showNewSessionEntry)
+{
+    if (showNewSessionEntry == m_showNewSessionEntry) {
+        return;
+    }
+
+    int row = m_data.size();
+    if (showNewSessionEntry) {
+        beginInsertRows(QModelIndex(), row, row);
+        m_showNewSessionEntry = showNewSessionEntry;
+        endInsertRows();
+    } else {
+        beginRemoveRows(QModelIndex(), row, row);
+        m_showNewSessionEntry = showNewSessionEntry;
+        endRemoveRows();
+    }
+    emit countChanged();
+}
+
+
 QVariant SessionsModel::data(const QModelIndex &index, int role) const
 {
-    if (index.row() < 0 || index.row() >= m_data.count()) {
+    if (index.row() < 0 || index.row() > rowCount(QModelIndex())) {
         return QVariant();
     }
 
+    if (index.row() == m_data.count()) {
+        switch (static_cast<Role>(role)) {
+        case Role::RealName: return i18n("New Session");
+        case Role::IconName: return QStringLiteral("list-add");
+        case Role::Name: return i18n("New Session");
+        case Role::DisplayNumber: return 0; //NA
+        case Role::VtNumber: return -1; //an invalid VtNumber - which we'll use to indicate it's to start a new session
+        case Role::Session: return 0; //NA
+        case Role::IsTty: return false; //NA
+        default: return QVariant();
+        }
+    }
+
     const SessionEntry &item = m_data.at(index.row());
 
     switch (static_cast<Role>(role)) {
@@ -204,15 +243,15 @@ QVariant SessionsModel::data(const QModelIndex &index, int role) const
     case Role::VtNumber: return item.vtNumber;
     case Role::Session: return item.session;
     case Role::IsTty: return item.isTty;
+    default: return QVariant();
     }
 
-    return QVariant();
 }
 
 int SessionsModel::rowCount(const QModelIndex &parent) const
 {
     Q_UNUSED(parent);
-    return m_data.count();
+    return m_data.count() + (m_showNewSessionEntry ? 1 : 0);
 }
 
 QHash<int, QByteArray> SessionsModel::roleNames() const
@@ -221,6 +260,7 @@ QHash<int, QByteArray> SessionsModel::roleNames() const
         {static_cast<int>(Role::Name), QByteArrayLiteral("name")},
         {static_cast<int>(Role::RealName), QByteArrayLiteral("realName")},
         {static_cast<int>(Role::Icon), QByteArrayLiteral("icon")},
+        {static_cast<int>(Role::IconName), QByteArrayLiteral("iconName")},
         {static_cast<int>(Role::DisplayNumber), QByteArrayLiteral("displayNumber")},
         {static_cast<int>(Role::VtNumber), QByteArrayLiteral("vtNumber")},
         {static_cast<int>(Role::Session), QByteArrayLiteral("session")},

components/sessionsprivate/sessionsmodel.h

@@ -55,6 +55,7 @@ class SessionsModel : public QAbstractListModel
     Q_PROPERTY(bool canSwitchUser READ canSwitchUser CONSTANT)
     Q_PROPERTY(bool canStartNewSession READ canStartNewSession CONSTANT)
     Q_PROPERTY(bool shouldLock READ shouldLock NOTIFY shouldLockChanged)
+    Q_PROPERTY(bool showNewSessionEntry MEMBER m_showNewSessionEntry WRITE setShowNewSessionEntry NOTIFY showNewSessionEntryChanged)
 
     Q_PROPERTY(int count READ rowCount NOTIFY countChanged)
 
@@ -64,18 +65,21 @@ public:
 
     enum class Role {
         RealName = Qt::DisplayRole,
-        Icon = Qt::DecorationRole,
+        Icon = Qt::DecorationRole, //path to a file
         Name = Qt::UserRole + 1,
         DisplayNumber,
         VtNumber,
         Session,
-        IsTty
+        IsTty,
+        IconName //name of an icon
     };
 
     bool canSwitchUser() const;
     bool canStartNewSession() const;
     bool shouldLock() const;
 
+    void setShowNewSessionEntry(bool showNewSessionEntry);
+
     Q_INVOKABLE void reload();
     Q_INVOKABLE void switchUser(int vt, bool shouldLock = false);
     Q_INVOKABLE void startNewSession(bool shouldLock = false);
@@ -86,6 +90,7 @@ public:
 
 signals:
     void shouldLockChanged();
+    void showNewSessionEntryChanged();
     void countChanged();
 
     void switchedUser(int vt);
@@ -103,6 +108,8 @@ private:
     int m_pendingVt = 0;
     bool m_pendingReserve = false;
 
+    bool m_showNewSessionEntry = false;
+
     org::freedesktop::ScreenSaver *m_screensaverInterface = nullptr;
 
 };

components/shellprivate/CMakeLists.txt

@@ -1,4 +1,3 @@
-add_definitions(-DTRANSLATION_DOMAIN=\"plasmashellprivateplugin\")
 
 if (KF5TextEditor_FOUND)
    set(interactiveconsole_SRCS

lookandfeel/contents/components/UserList.qml

@@ -48,7 +48,7 @@ ListView {
         name: {
             var displayName = model.realName || model.name
 
-            if (model.vtNumber === undefined) {
+            if (model.vtNumber === undefined || model.vtNumber < 0) {
                 return displayName
             }
 

lookandfeel/contents/lockscreen/LockScreenUi.qml

@@ -53,6 +53,7 @@ PlasmaCore.ColorScope {
 
     SessionsModel {
         id: sessionsModel
+        showNewSessionEntry: true
     }
 
     PlasmaCore.DataSource {

lookandfeel/contents/userswitcher/UserSwitcher.qml

@@ -45,6 +45,8 @@ PlasmaCore.ColorScope {
 
     SessionsModel {
         id: sessionsModel
+        showNewSessionEntry: true
+
         // the calls takes place asynchronously; if we were to dismiss the dialog right
         // after startNewSession/switchUser we would be destroyed before the reply
         // returned leaving us do nothing (Bug 356945)