Reordering treegrid - store not updated correctly

[anttihavanko]

Hi

I'm trying to reorder EditorTreeGrid and update the model after dragdrop. I found out that calling store.getModels(), returns updated store but fetching models with getChild(i) doesn't. Is this a bug or should I "refresh" the store somehow? This only happens when model is dragged to some parent model (=new depth>0).



TreeStore<FoodModel>store = new TreeStore<FoodModel>();
EditorTreeGrid<FoodModel> grid = new EditorTreeGrid<FoodModel>(store, cm);
TreeGridDropTarget target = new TreeGridDropTarget(grid) {
@Override
protected void onDragDrop(DNDEvent e) {
super.onDragDrop(e);

final ArrayList<TreeStoreModel> arr = (ArrayList<TreeStoreModel>)e.getData();
final TreeStoreModel mT = arr.get(0);
final FoodModel m = (FoodModel)mT.getModel();
System.out.println("Dragged model: "+m.getName());

//get grid
final EditorTreeGrid<FoodModel> gridNew = (EditorTreeGrid<FoodModel>)e.getDropTarget().getComponent();
final TreeStore<FoodModel> store = (TreeStore<FoodModel>)gridNew.getTreeStore();
//print with getModels()
for(FoodModel mm : store.getModels()) {
System.out.println("With getModels(): "+mm.getName());
}
//print with getChild(i)
System.out.println("");
for(int i=0; i<store.getChildCount(); i++)
{
FoodModel mm = store.getChild(i);
System.out.println("With getChild(): "+mm.getName());
for(int j=0; j<mm.getChildCount(); j++) {
System.out.println(" - child: "+((FoodModel)mm.getChild(j)).getName());
}

}
}
}


And when "Model1" is dragged from different grid to "Parent2" that prints:


Dragged model: Model1
With getModels(): Parent1
With getModels(): Model2
With getModels(): Parent2
With getModels(): Model3
With getModels(): Model1

With getChild(): Parent1
- child: Model2
With getChild(): Parent2
- child: Model3


It seems that child models are not updated correctly? I hope somebody understands what I'm trying to say :D

[sven]

Can you please post some fully working testcase that implements EntryPoint?

[sven]

Actually, i see it.

Only the store keeps the structure. The model is not updated. Instead of calling mm.getChildCount() and mm.getChild(), you need to ask the store for the data.

[anttihavanko]

What do you mean by "ask store for the data"?

Do I have to manually add/update the dragged model to correct parent (where it was dragged)? Because it updates the grid correctly after dragdrop. (<- means that visually grid is correct after dropping the model)

[sven]

No, instead of calling mm.getChildCount, ask the store for the child count.

store.getChildCount(mm);

Same for getting the actual children

[anttihavanko]

Yes, that does the trick. Now it is working correctly. Thanks!