QQmlDMAbstractItemModelData: add support for row and column

This will give item view delegates access to which row and
column they belong to.

Change-Id: I5c008504d30695319e5b149987af750f860043dd
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>
Reviewed-by: J-P Nurmi <jpnurmi@qt.io>

1 files changed, 35 insertions, 4 deletions

diff --git a/src/qml/util/qqmladaptormodel.cpp b/src/qml/util/qqmladaptormodel.cpp
index d3167d24f3..104d655820 100644
--- a/src/qml/util/qqmladaptormodel.cpp
+++ b/src/qml/util/qqmladaptormodel.cpp
@@ -330,7 +330,7 @@ bool QQmlDMCachedModelData::resolveIndex(const QQmlAdaptorModel &, int idx)
 {
     if (index == -1) {
         Q_ASSERT(idx >= 0);
-        index = idx;
+        setModelIndex(idx);
         cachedData.clear();
         emit modelIndexChanged();
         const QMetaObject *meta = metaObject();
@@ -399,13 +399,18 @@ QV4::ReturnedValue QQmlDMCachedModelData::set_property(const QV4::FunctionObject
 class QQmlDMAbstractItemModelData : public QQmlDMCachedModelData
 {
     Q_OBJECT
+    Q_PROPERTY(int row MEMBER row NOTIFY rowChanged)
+    Q_PROPERTY(int column MEMBER column NOTIFY columnChanged)
     Q_PROPERTY(bool hasModelChildren READ hasModelChildren CONSTANT)
+
 public:
     QQmlDMAbstractItemModelData(
             QQmlDelegateModelItemMetaType *metaType,
             VDMModelDelegateDataType *dataType,
             int index)
         : QQmlDMCachedModelData(metaType, dataType, index)
+        , row(type->model->rowAt(index))
+        , column(type->model->columnAt(index))
     {
     }
 
@@ -413,7 +418,7 @@ public:
     {
         if (index >= 0 && *type->model) {
             const QAbstractItemModel * const model = type->model->aim();
-            return model->hasChildren(model->index(index, 0, type->model->rootIndex));
+            return model->hasChildren(model->index(row, column, type->model->rootIndex));
         } else {
             return false;
         }
@@ -421,13 +426,13 @@ public:
 
     QVariant value(int role) const override
     {
-        return type->model->aim()->index(index, 0, type->model->rootIndex).data(role);
+        return type->model->aim()->index(row, column, type->model->rootIndex).data(role);
     }
 
     void setValue(int role, const QVariant &value) override
     {
         type->model->aim()->setData(
-                type->model->aim()->index(index, 0, type->model->rootIndex), value, role);
+                type->model->aim()->index(row, column, type->model->rootIndex), value, role);
     }
 
     QV4::ReturnedValue get() override
@@ -443,6 +448,16 @@ public:
         ++scriptRef;
         return o.asReturnedValue();
     }
+
+    void setModelIndex(int idx) override;
+
+Q_SIGNALS:
+    void rowChanged();
+    void columnChanged();
+
+private:
+    int row;
+    int column;
 };
 
 class VDMAbstractItemModelDataType : public VDMModelDelegateDataType
@@ -563,6 +578,22 @@ public:
     }
 };
 
+void QQmlDMAbstractItemModelData::setModelIndex(int idx)
+{
+    QQmlDMCachedModelData::setModelIndex(idx);
+
+    int prevRow = row;
+    int prevColumn = column;
+
+    row = type->model->rowAt(idx);
+    column = type->model->columnAt(idx);
+
+    if (row != prevRow)
+        emit rowChanged();
+    if (column != prevColumn)
+        emit columnChanged();
+}
+
 //-----------------------------------------------------------------
 // QQmlListAccessor
 //-----------------------------------------------------------------