From fb09018d49e182012422d721fb0fbf95130b82c5 Mon Sep 17 00:00:00 2001
From: Christian Mollekopf <chrigi_1@fastmail.fm>
Date: Wed, 3 Jan 2018 17:58:47 +0100
Subject: We need all parents available, not only one

---
 common/modelresult.cpp | 24 +++++++++++++++++++-----
 common/modelresult.h   |  1 +
 2 files changed, 20 insertions(+), 5 deletions(-)

(limited to 'common')

diff --git a/common/modelresult.cpp b/common/modelresult.cpp
index 9685e3c..495eca0 100644
--- a/common/modelresult.cpp
+++ b/common/modelresult.cpp
@@ -236,6 +236,7 @@ QModelIndex ModelResult<T, Ptr>::createIndexFromId(const qint64 &id) const
     }
     auto grandParentId = mParents.value(id, 0);
     auto row = mTree.value(grandParentId).indexOf(id);
+    Q_ASSERT(row >= 0);
     return createIndex(row, 0, id);
 }
 
@@ -290,6 +291,19 @@ void ModelResult<T, Ptr>::fetchMore(const QModelIndex &parent)
     }
 }
 
+template <class T, class Ptr>
+bool ModelResult<T, Ptr>::allParentsAvailable(qint64 id) const
+{
+    auto p = id;
+    while (p) {
+        if (!mEntities.contains(p)) {
+            return false;
+        }
+        p = mParents.value(p, 0);
+    }
+    return true;
+}
+
 template <class T, class Ptr>
 void ModelResult<T, Ptr>::add(const Ptr &value)
 {
@@ -306,16 +320,16 @@ void ModelResult<T, Ptr>::add(const Ptr &value)
             break;
         }
     }
-    bool parentIsAvailable = mEntities.contains(pId) || (pId == 0);
-    SinkTraceCtx(mLogCtx) << "Added entity " << childId <<  "id: " << value->identifier() << "parent: " << pId;
+    bool parentIsVisible = allParentsAvailable(pId);
     // SinkTraceCtx(mLogCtx) << "Inserting rows " << index << parent;
-    if (parentIsAvailable) {
-        beginInsertRows(createIndexFromId(pId), idx, idx);
+    if (parentIsVisible) {
+        auto parent = createIndexFromId(pId);
+        beginInsertRows(parent, idx, idx);
     }
     mEntities.insert(childId, value);
     mTree[pId].insert(idx, childId);
     mParents.insert(childId, pId);
-    if (parentIsAvailable) {
+    if (parentIsVisible) {
         endInsertRows();
     }
     // SinkTraceCtx(mLogCtx) << "Inserted rows " << mTree[id].size();
diff --git a/common/modelresult.h b/common/modelresult.h
index 55a95b9..321f9f1 100644
--- a/common/modelresult.h
+++ b/common/modelresult.h
@@ -75,6 +75,7 @@ private:
 
     qint64 parentId(const Ptr &value);
     QModelIndex createIndexFromId(const qint64 &id) const;
+    bool allParentsAvailable(qint64 id) const;
 
     Sink::Log::Context  mLogCtx;
     // TODO we should be able to directly use T as index, with an appropriate hash function, and thus have a QMap<T, T> and QList<T>
-- 
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