applets/dict: Add `count` in DictionariesModel

count: the number of dict items

applets/dict/plugin/dictionariesmodel.cpp

@@ -21,6 +21,8 @@ DictionariesModel::DictionariesModel(QObject *parent)
         }
         endResetModel();
     });
+    connect(this, &QAbstractItemModel::modelReset, this, &DictionariesModel::countChanged);
+
     engine.requestDicts();
 }
 
@@ -50,3 +52,8 @@ QHash<int, QByteArray> DictionariesModel::roleNames() const
 {
     return {{Qt::DisplayRole, "description"}, {Qt::EditRole, "id"}};
 }
+
+int DictionariesModel::count() const
+{
+    return rowCount();
+}

applets/dict/plugin/dictionariesmodel.h

@@ -14,6 +14,11 @@ class DictionariesModel : public QAbstractListModel
 {
     Q_OBJECT
 
+    /**
+     * @return the number of dict items
+     */
+    Q_PROPERTY(int count READ count NOTIFY countChanged)
+
 public:
     explicit DictionariesModel(QObject *parent = nullptr);
 
@@ -21,6 +26,11 @@ public:
     int rowCount(const QModelIndex &index = QModelIndex()) const override;
     QHash<int, QByteArray> roleNames() const override;
 
+    int count() const;
+
+Q_SIGNALS:
+    void countChanged();
+
 private:
     void setAvailableDicts(const QVariantMap &data);