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Showing posts from December, 2012

Adjustable flex datagrid row height for multi-level tree component

Note: This blog is extension to the post blogged here , the OP has used one level tree to display in grid, whereas I used multilevel tree. From last 2-3 months I'm working on Flex, developing our in-house map editor. We've a requirement to show a grid with some column containing multilevel tree data, I googled it and found the above link which was matching to our requirement but got one problem, it didn't work correctly for multilevel tree. The problem is - It failed to adjust height when you expand inner child element. The whole tree get collapsed when you collapse the inner element. To provide a solution to above problems, you have to - Keep a flag which tells if root is closing or not, if root is closing keep the original height. For all other child expansion, count the children from existing "open items" and adjust height accordingly. The below code explains it all.