CODEWITHSUNDEEP
javajava-8vaadin8treegridvaadin-grid
Anam Qureshi
Anam Qureshi

Reputation: 311

Adding data between leafs of tree grid vaadin

I am trying to create a tree grid in vaadin. Is it possible to insert some data between two leafs of tree grid?

Upvotes: 1

Views: 314

Answers (2)

王伟Wang Wei
王伟Wang Wei

Reputation: 1

I faced the similar problem, it seems the complex data structure to handle, it may create performance issues. I doubt whether it is possible in vaadin 8. Not possible to add new data in between the tree grid.

Upvotes: 0

Tarek Oraby
Tarek Oraby

Reputation: 1219

Not sure if there is an easier way, but you should be able to remove the last leaf(s), add your item, then re-add the removed leafs.

Example: assuming the following TreeGrid

TreeGrid<String> grid = new TreeGrid<>();
Column<String, String> col = grid.addColumn(String::toString);
grid.setHierarchyColumn(col);

TreeData<String> td = grid.getTreeData();
td.addItem(null, "root");
td.addItem("root", "first child");
td.addItem("root", "last child");

You can insert a middle child like so

td.removeItem("last child");
td.addItem("root", "middle child");
td.addItem("root", "last child");
grid.getDataProvider().refreshAll(); // Refresh for changes to TreeData to take effect

Upvotes: 1

Related Questions