From 0b9e8fa0672802ed91d0519e1e920f4b0396f2cf Mon Sep 17 00:00:00 2001
From: Anika Raemer <anika@raemer.net>
Date: Fri, 19 Oct 2018 20:41:14 +0200
Subject: [PATCH] show child list on click

---
 LenaPi/controllers/NavigationController.cpp | 13 +++++++++++--
 LenaPi/controllers/NavigationController.h   |  5 ++++-
 LenaPi/models/NavigationItemModel.cpp       | 10 ++++++++++
 LenaPi/models/NavigationItemModel.h         |  5 ++++-
 4 files changed, 29 insertions(+), 4 deletions(-)

diff --git a/LenaPi/controllers/NavigationController.cpp b/LenaPi/controllers/NavigationController.cpp
index 8467c60..c528e98 100644
--- a/LenaPi/controllers/NavigationController.cpp
+++ b/LenaPi/controllers/NavigationController.cpp
@@ -38,7 +38,6 @@ void NavigationController::setContextProperties()
 
 void NavigationController::add(const QString &path, NavigationItemModel *parentItem, bool isCircleDelegate)
 {
-    ///@todo recursively do the following for all subdirs
     auto dir = QDir(path);
     if(!dir.exists()) return;
 
@@ -48,12 +47,13 @@ void NavigationController::add(const QString &path, NavigationItemModel *parentI
     for(const auto& name : subDirsNames){
         if(name == "." || name == "..") continue;
         auto item = new NavigationItemModel(parentItem);
-        item->setCircleDelegate(isCircleDelegate);
         if(!item->setPath(path + "/" + name)) {
             item->deleteLater();
             continue;
         }
         qDebug() << "appending item " << item->getPath();
+        item->setCircleDelegate(isCircleDelegate);
+        connect(item, &NavigationItemModel::clicked, this, &NavigationController::onNavigationRequest);
         parentItem->appendChild(item);
         add(item->getPath(), item, false);
     }
@@ -65,3 +65,12 @@ void NavigationController::add(const QString &path, NavigationItemModel *parentI
     }
     // end testing
 }
+
+void NavigationController::onNavigationRequest()
+{
+    auto item = qobject_cast<NavigationItemModel*>(QObject::sender());
+    if(!item) return;
+
+    if(item->hasChildren())
+        mNavList->setModelItems(item->getChildren());
+}
diff --git a/LenaPi/controllers/NavigationController.h b/LenaPi/controllers/NavigationController.h
index c1f5cc4..709556d 100644
--- a/LenaPi/controllers/NavigationController.h
+++ b/LenaPi/controllers/NavigationController.h
@@ -25,7 +25,10 @@ private:
     NavigationListModel* mNavList;
     QString mRootPath = ".";
 
-    QQmlContext* mContext;
+    QQmlContext* mContext = Q_NULLPTR;
+
+private slots:
+    void onNavigationRequest();
 };
 
 #endif // NAVIGATIONCONTROLLER_H
diff --git a/LenaPi/models/NavigationItemModel.cpp b/LenaPi/models/NavigationItemModel.cpp
index 0b04ca5..e57fb5f 100644
--- a/LenaPi/models/NavigationItemModel.cpp
+++ b/LenaPi/models/NavigationItemModel.cpp
@@ -55,11 +55,21 @@ void NavigationItemModel::setCircleDelegate(bool value)
     }
 }
 
+bool NavigationItemModel::isRoot() const
+{
+    return mParentItem;
+}
+
 NavigationItemModel *NavigationItemModel::getParentItem()
 {
     return mParentItem;
 }
 
+bool NavigationItemModel::hasChildren() const
+{
+    return !mChildren.isEmpty();
+}
+
 QList<NavigationItemModel *> NavigationItemModel::getChildren()
 {
     return mChildren;
diff --git a/LenaPi/models/NavigationItemModel.h b/LenaPi/models/NavigationItemModel.h
index 6d1801a..f789f43 100644
--- a/LenaPi/models/NavigationItemModel.h
+++ b/LenaPi/models/NavigationItemModel.h
@@ -26,8 +26,11 @@ public:
     bool isCircleDelegate() const;
     void setCircleDelegate(bool value);
 
+    bool isRoot() const;
     NavigationItemModel* getParentItem();
-    QList<NavigationItemModel*> getChildren();
+
+    bool hasChildren() const;
+    QList<NavigationItemModel *> getChildren();
 
     void appendChild(NavigationItemModel* item);
     void clearChildren();