General update

KomplexHubPlugin/featuredimagesmodel.h

@@ -35,6 +35,7 @@
 #include <QNetworkReply>
 #include <QNetworkRequest>
 #include <QEventLoop>
+#include <QtConcurrent/QtConcurrentRun>
 
 #include "paginators/featuredimagespaginator.h"
 
@@ -200,13 +201,13 @@ public:
      * @brief nextPage
      * Function for the QML frontend
      */
-    Q_INVOKABLE auto nextPage() const -> void;
+    Q_INVOKABLE auto nextPage() -> void;
 
     /**
      * @brief previousPage
      * Function for the QML frontend
      */
-    Q_INVOKABLE auto previousPage() const -> void;
+    Q_INVOKABLE auto previousPage() -> void;
 
 protected:
     /**
@@ -226,8 +227,19 @@ protected:
      */
     auto resetState() -> void;
 
+    /**
+     * @brief resetDataModel
+     * Clears the data model and creates a new one if data exists
+     */
     auto resetDataModel() -> void;
 
+    /**
+     * @brief onPaginatorFetching
+     * Sets current state to loading. Triggered when paginator's cache controller
+     * needs to fetch data from the remote endpoint.
+     */
+    auto onPaginatorFetching() -> void;
+
 signals:
     auto stateChanged() -> void;
     auto errorStringChanged() -> void;
@@ -238,6 +250,18 @@ signals:
     auto totalPagesChanged() -> void;
 
 private:
+    /**
+     * @brief boundaryCheck
+     * Helper function to check the requested index boundary
+     * @param index
+     * @return
+     */
+    auto boundaryCheck(qsizetype index) const -> bool;
+
+    /**
+     * @brief m_dataRoles
+     * Data role map that connects ImageSearchModel::DataRole to it's QML accessor name
+     */
     static inline const QHash<int, QByteArray> m_dataRoles =
     {
         {
@@ -299,8 +323,6 @@ private:
 
     FeaturedImagesPaginator *m_paginator = nullptr;
 
-    mutable QList<ImageCache> m_data;
-
     Q_PROPERTY(State state READ state WRITE setState RESET resetState NOTIFY stateChanged FINAL)
     Q_PROPERTY(QString errorString READ errorString WRITE setErrorString NOTIFY errorStringChanged FINAL)
     Q_PROPERTY(qsizetype resultsPerPage READ resultsPerPage WRITE setResultsPerPage NOTIFY resultsPerPageChanged FINAL)