added basic models and controllers

LenaPi/models/NavigationItemModel.cpp

@@ -0,0 +1,70 @@
+#include "NavigationItemModel.h"
+
+#include <QDir>
+#include <QFile>
+
+NavigationItemModel::NavigationItemModel(QObject *parent) : QObject(parent)
+{
+
+}
+
+QString NavigationItemModel::getImageSource() const
+{
+    return mImageSource;
+}
+
+QString NavigationItemModel::getPath() const
+{
+    return mPath;
+}
+
+void NavigationItemModel::onClicked()
+{
+    emit clicked();
+}
+
+bool NavigationItemModel::setPath(const QString &path)
+{
+
+    //@todo check if image.jpg exist; use default image from qrc otherwise!
+
+    auto dir = QDir(path);
+    if(!dir.exists()) return false;
+
+    mPath = path;
+
+    auto source = dir.filePath("file.jpg");
+    if(QFile(source).exists())
+        mImageSource = source;
+    else
+        mImageSource = "file:///home/ar/source/LenaPi/pics/benjamin.jpeg";
+
+     emit imageSourceChanged();
+
+    return true;
+}
+
+NavigationItemModel *NavigationItemModel::getParentItem()
+{
+    return mParentItem;
+}
+
+QList<NavigationItemModel *> NavigationItemModel::getChildren()
+{
+    return mChildren;
+}
+
+void NavigationItemModel::appendChild(NavigationItemModel *item)
+{
+    item->setParent(this);
+    mChildren.append(item);
+}
+
+void NavigationItemModel::clearChildren()
+{
+    for(const auto& child : mChildren){
+        child->deleteLater();
+    }
+    mChildren.clear();
+}
+