Add helper functions to the autogenerated pagingmodel backend implementations

These helper functions can be used to alter a pagingmodel from QML and
script it in a meaningful way without the need to care about the internal
paging logic.

Change-Id: Iaca947ab738701a93288e845df08ae4d37ec32df
Reviewed-by: Robert Griebl <robert.griebl@pelagicore.com>

2 files changed, 57 insertions, 4 deletions

diff --git a/src/tools/ivigenerator/templates_backend_simulator/pagingmodel.cpp.tpl b/src/tools/ivigenerator/templates_backend_simulator/pagingmodel.cpp.tpl
index 060a377..68433f6 100644
--- a/src/tools/ivigenerator/templates_backend_simulator/pagingmodel.cpp.tpl
+++ b/src/tools/ivigenerator/templates_backend_simulator/pagingmodel.cpp.tpl
@@ -42,6 +42,7 @@
 {{class}}::{{class}}(QObject* parent)
     : QIviPagingModelInterface(parent)
 {
+    qRegisterMetaType<QIviPagingModelInterface*>();
     m_list = {{property|default_value}};
 }
 
@@ -85,3 +86,47 @@ void {{class}}::fetchData(const QUuid &identifier, int start, int count)
 
     emit dataFetched(identifier, list, start, max <  m_list.count());
 }
+
+void {{class}}::insert(int index, const {{property.type.nested}} &item)
+{
+    m_list.insert(index, item);
+
+    emit dataChanged(QUuid(), { QVariant::fromValue(item) }, index, 0);
+}
+
+void {{class}}::remove(int index)
+{
+    m_list.removeAt(index);
+
+    emit dataChanged(QUuid(), QVariantList(), index, 1);
+}
+
+void {{class}}::move(int currentIndex, int newIndex)
+{
+    int min = qMin(currentIndex, newIndex);
+    int max = qMax(currentIndex, newIndex);
+
+    m_list.move(currentIndex, newIndex);
+    QVariantList variantList;
+    for (int i = min; i <= max; i++)
+        variantList.append(QVariant::fromValue(m_list.at(i)));
+
+    emit dataChanged(QUuid(), variantList, min, max - min + 1);
+}
+
+void {{class}}::reset()
+{
+    emit dataChanged(QUuid(), QVariantList(), 0, m_list.count());
+    m_list.clear();
+}
+
+void {{class}}::update(int index, const {{property.type.nested}} &item)
+{
+    m_list[index] = item;
+    emit dataChanged(QUuid(), { QVariant::fromValue(item) }, index, 1);
+}
+
+const {{property.type.nested}} &{{class}}::at(int index) const
+{
+    return m_list.at(index);
+}
diff --git a/src/tools/ivigenerator/templates_backend_simulator/pagingmodel.h.tpl b/src/tools/ivigenerator/templates_backend_simulator/pagingmodel.h.tpl
index 5d664bf..e274ce8 100644
--- a/src/tools/ivigenerator/templates_backend_simulator/pagingmodel.h.tpl
+++ b/src/tools/ivigenerator/templates_backend_simulator/pagingmodel.h.tpl
@@ -49,11 +49,19 @@ public:
     explicit {{class}}(QObject *parent = nullptr);
     ~{{class}}();
 
-    void initialize() override;
-    void registerInstance(const QUuid &identifier) override;
-    void unregisterInstance(const QUuid &identifier) override;
+    Q_INVOKABLE void initialize() override;
+    Q_INVOKABLE void registerInstance(const QUuid &identifier) override;
+    Q_INVOKABLE void unregisterInstance(const QUuid &identifier) override;
 
-    void fetchData(const QUuid &identifier, int start, int count) override;
+    Q_INVOKABLE void fetchData(const QUuid &identifier, int start, int count) override;
+
+public Q_SLOTS:
+    void insert(int index, const {{property.type.nested}} &item);
+    void remove(int index);
+    void move(int currentIndex, int newIndex);
+    void reset();
+    void update(int index, const {{property.type.nested}} &item);
+    const {{property.type.nested}} &at(int index) const;
 
 private:
     QList<{{property.type.nested}}> m_list;