[Notifications] Report roleNames in the relevant places

QML needs it on the model it uses (Notifications) where they used to be but GammaRay seems to be taking them from the source (NotificationsModel).
This has both models (and jobs model) return the roleNames() and moves them to Utils so they're shared.

Differential Revision: https://phabricator.kde.org/D28657

libnotificationmanager/jobsmodel.cpp

@@ -22,6 +22,7 @@
 #include "jobsmodel_p.h"
 
 #include "notifications.h"
+#include "utils_p.h"
 
 #include <QDebug>
 #include <QScopedPointer>
@@ -176,6 +177,11 @@ int JobsModel::rowCount(const QModelIndex &parent) const
     return d->m_jobViews.count();
 }
 
+QHash<int, QByteArray> JobsModel::roleNames() const
+{
+    return Utils::roleNames();
+}
+
 void JobsModel::close(const QModelIndex &idx)
 {
     if (checkIndex(idx)) {

libnotificationmanager/jobsmodel.h

@@ -57,6 +57,7 @@ public:
     QVariant data(const QModelIndex &index, int role) const override;
     bool setData(const QModelIndex &index, const QVariant &value, int role) override;
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    QHash<int, QByteArray> roleNames() const override;
 
     /**
      * @brief Close a job

libnotificationmanager/notifications.cpp

@@ -843,26 +843,5 @@ int Notifications::rowCount(const QModelIndex &parent) const
 
 QHash<int, QByteArray> Notifications::roleNames() const
 {
-    static QHash<int, QByteArray> s_roles;
-
-    if (s_roles.isEmpty()) {
-        s_roles = QSortFilterProxyModel::roleNames();
-
-        // This generates role names from the Roles enum in the form of: FooRole -> foo
-        const QMetaEnum e = staticMetaObject.enumerator(staticMetaObject.indexOfEnumerator("Roles"));
-
-        for (int i = 0; i < e.keyCount(); ++i) {
-            const int value = e.value(i);
-
-            QByteArray key(e.key(i));
-            key[0] = key[0] + 32; // lower case first letter
-            key.chop(4); // strip "Role" suffix
-
-            s_roles.insert(value, key);
-        }
-
-        s_roles.insert(IdRole, QByteArrayLiteral("notificationId")); // id is QML-reserved
-    }
-
-    return s_roles;
+    return Utils::roleNames();
 }

libnotificationmanager/notificationsmodel.cpp

@@ -23,6 +23,7 @@
 #include "debug.h"
 
 #include "server.h"
+#include "utils_p.h"
 
 #include "notifications.h"
 
@@ -350,6 +351,11 @@ int NotificationsModel::rowCount(const QModelIndex &parent) const
     return d->notifications.count();
 }
 
+QHash<int, QByteArray> NotificationsModel::roleNames() const
+{
+    return Utils::roleNames();
+}
+
 void NotificationsModel::expire(uint notificationId)
 {
     if (d->rowOfNotification(notificationId) > -1) {

libnotificationmanager/notificationsmodel.h

@@ -45,6 +45,7 @@ public:
     QVariant data(const QModelIndex &index, int role) const override;
     bool setData(const QModelIndex &index, const QVariant &value, int role) override;
     int rowCount(const QModelIndex &parent = QModelIndex()) const override;
+    QHash<int, QByteArray> roleNames() const override;
 
     void expire(uint notificationId);
     void close(uint notificationId);

libnotificationmanager/utils.cpp

@@ -20,12 +20,15 @@
 
 #include "utils_p.h"
 
+#include "notifications.h"
+
 #include <QAbstractItemModel>
 #include <QAbstractProxyModel>
 #include <QCoreApplication>
 #include <QDBusConnection>
 #include <QDBusConnectionInterface>
 #include <QFile>
+#include <QMetaEnum>
 #include <QTextStream>
 
 #include <KConcatenateRowsProxyModel>
@@ -34,6 +37,34 @@
 
 using namespace NotificationManager;
 
+QHash<int, QByteArray> Utils::roleNames()
+{
+    static QHash<int, QByteArray> s_roles;
+
+    if (s_roles.isEmpty()) {
+        // This generates role names from the Roles enum in the form of: FooRole -> foo
+        const QMetaEnum e = QMetaEnum::fromType<Notifications::Roles>();
+
+        // Qt built-in roles we use
+        s_roles.insert(Qt::DisplayRole, QByteArrayLiteral("display"));
+        s_roles.insert(Qt::DecorationRole, QByteArrayLiteral("decoration"));
+
+        for (int i = 0; i < e.keyCount(); ++i) {
+            const int value = e.value(i);
+
+            QByteArray key(e.key(i));
+            key[0] = key[0] + 32; // lower case first letter
+            key.chop(4); // strip "Role" suffix
+
+            s_roles.insert(value, key);
+        }
+
+        s_roles.insert(Notifications::IdRole, QByteArrayLiteral("notificationId")); // id is QML-reserved
+    }
+
+    return s_roles;
+}
+
 QString Utils::processNameFromPid(uint pid)
 {
     auto processInfo = KProcessList::processInfo(pid);

libnotificationmanager/utils_p.h

@@ -32,6 +32,8 @@ namespace NotificationManager
 namespace Utils
 {
 
+QHash<int, QByteArray> roleNames();
+
 QString processNameFromPid(uint pid);
 
 QString desktopEntryFromPid(uint pid);