Store last used emojis in the state config file

Instead of crumming up the main settings file with the last used emojis,
they now live in the state (where they belong.)

src/models/emojimodel.cpp

@@ -14,6 +14,8 @@
 
 EmojiModel::EmojiModel(QObject *parent)
     : QAbstractListModel(parent)
+    , m_config(KSharedConfig::openStateConfig())
+    , m_configGroup(KConfigGroup(m_config, QStringLiteral("Editor")))
 {
     if (_emojis.isEmpty()) {
 #include "emojis.h"
@@ -61,9 +63,9 @@ QHash<int, QByteArray> EmojiModel::roleNames() const
     return {{ShortNameRole, "shortName"}, {UnicodeRole, "unicode"}};
 }
 
-QVariantList EmojiModel::history() const
+QStringList EmojiModel::lastUsedEmojis() const
 {
-    return m_settings.value(QStringLiteral("Editor/emojis"), QVariantList()).toList();
+    return m_configGroup.readEntry(QStringLiteral("lastUsedEmojis"), QStringList());
 }
 
 QVariantList EmojiModel::filterModel(const QString &filter, bool limit)
@@ -93,19 +95,21 @@ QVariantList EmojiModel::filterModelNoCustom(const QString &filter, bool limit)
 
 void EmojiModel::emojiUsed(const QVariant &modelData)
 {
-    QVariantList list = history();
+    auto list = lastUsedEmojis();
+    const auto emoji = modelData.value<Emoji>();
 
     auto it = list.begin();
     while (it != list.end()) {
-        if ((*it).value<Emoji>().unicode == modelData.value<Emoji>().unicode) {
+        if (*it == emoji.shortName) {
             it = list.erase(it);
         } else {
             it++;
         }
     }
 
-    list.push_front(modelData);
-    m_settings.setValue(QStringLiteral("Editor/emojis"), list);
+    list.push_front(emoji.shortName);
+
+    m_configGroup.writeEntry(QStringLiteral("lastUsedEmojis"), list);
 
     Q_EMIT historyChanged();
 }
@@ -113,11 +117,11 @@ void EmojiModel::emojiUsed(const QVariant &modelData)
 QVariantList EmojiModel::emojis(Category category) const
 {
     if (category == History) {
-        return history();
+        return emojiHistory();
     }
     if (category == HistoryNoCustom) {
         QVariantList list;
-        for (const auto &e : history()) {
+        for (const auto &e : emojiHistory()) {
             auto emoji = qvariant_cast<Emoji>(e);
             if (!emoji.isCustom) {
                 list.append(e);
@@ -217,4 +221,19 @@ QVariantList EmojiModel::categoriesWithCustom() const
     return cats;
 }
 
+QVariantList EmojiModel::emojiHistory() const
+{
+    QVariantList list;
+    for (const auto &historicEmoji : lastUsedEmojis()) {
+        for (const auto &emojiCategory : _emojis) {
+            for (const auto &emoji : emojiCategory) {
+                if (qvariant_cast<Emoji>(emoji).shortName == historicEmoji) {
+                    list.append(emoji);
+                }
+            }
+        }
+    }
+    return list;
+}
+
 #include "moc_emojimodel.cpp"