Hi,
NestedTree utilizes its hierarchical markup to update the expanded
branch only. This is not possible with a tabular markup.
Either you
- use NestedTree if you don't need columns and get partial updates for free
- use TableTree because of needed columns and live with complete updates
(similar to changes of sorting order in a DataTable)
- or invent a solution that replicates the magic of the old (deprecated)
tree implementation (it was able to update a subset or rows with a lot
of specialized rendering code)
Have fun
Sven
On 26.08.2015 21:20, Ephraim Rosenfeld wrote:
Hello Everyone:
I am looking for a way to leverage the
TableTree<https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/extensions/markup/html/repeater/tree/TableTree.html>
component while getting the Ajax updating behavior of the
NestedTree<https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/extensions/markup/html/repeater/tree/NestedTree.html>
component.
The following
post<http://stackoverflow.com/questions/19790545/stop-wicket-from-repainting-the-whole-page-after-each-ajax-call/19806978#19806978>
states that when using a
TableTree<https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/extensions/markup/html/repeater/tree/TableTree.html>,
the
TableTree#updateBranch<https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/extensions/markup/html/repeater/tree/TableTree.html#updateBranch(T,%20org.apache.wicket.ajax.AjaxRequestTarget)>
causes the entire table to be updated when expanding a node. In contrast, the
NestedTree<https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/extensions/markup/html/repeater/tree/NestedTree.html>
component overrides the
updateBranch<https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/extensions/markup/html/repeater/tree/NestedTree.html#updateBranch(T,%20org.apache.wicket.ajax.AjaxRequestTarget)>
method so that the table will appear with the sub-nodes expanded without having to refresh the entire table
when expanding a node.
If I try to override the
TableTree#updateBranch<https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/extensions/markup/html/repeater/tree/TableTree.html#updateBranch(T,%20org.apache.wicket.ajax.AjaxRequestTarget)>
with the same type of Visitor functionality in the
NestedTree#updateBranch<https://github.com/apache/wicket/blob/master/wicket-extensions/src/main/java/org/apache/wicket/extensions/markup/html/repeater/tree/NestedTree.java>
method to add back only the Item or RowItem component when the node is expanded, only the
parent node appears with the expanded icon, but the sub-node does not appear. This makes sense
because the
TableTree<https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/extensions/markup/html/repeater/tree/TableTree.html>
component presents sub-nodes as new rows in the table.
Is it possible to override the behavior of the
TableTree<https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/extensions/markup/html/repeater/tree/TableTree.html>
component such that the entire table need not be updated when expanding a node? Or am I
better off using the
NestedTree<https://ci.apache.org/projects/wicket/apidocs/6.x/org/apache/wicket/extensions/markup/html/repeater/tree/NestedTree.html>
component?
Thank you in advance,
- Ephraim
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