Requirement Description

Original:

under the current design, there is no line between a parent node and its children. But connected lines can make the parent-children structure more readable like:

But when trying to adding lines among nodes, ZK tree lacks enough information to rendering lines with CSS only because every row is a z-treerow. For example, no way to differentiate the last child of each parent node since the last child required a different line style.

workaround

From this workaround ( tree-line.js and tree-line2.css ), I have to render some specific CSS class to identify each tree row like z-treerow-child, z-treerow-last-child, so that I can render different styles of the line for them.