getTreeState() is not working (points to not existing function)

[vgroisma]

this is not working, complains that function is not implemented.
gridApi.treeBase.getTreeState()

this does exist (but not documented):
gridApi.treeBase.getTreeExpandedState()

but this internally points to service.getTreeState(grid) which also doesn't exist.

[Singh-R]

gridApi.treeBase.getTreeExpandedState() : when will this method be available for developers use?

[tringuyenminh92]

that's beta version for this feature so i manually saved grid's state object by using grid's state not tree state. so that i could restore some visible columns, orders, widths and expanded/collapsed state

[nealrosen]

@tringuyenminh92 Could you provide more detail on how you resolved this? I am also trying to restore expanded/collapsed state.

Is there an anticipated release date for support for this feature?

[RobbSadler]

bump - thanks!

[amberasaurus]

This still appears to be an issue in v3.2.9. Can we get some details on a workaround for now? Thanks!

[smingam]

Hi guys, ran into this issue myself, here's my workaround:
you need some unique ID in your data for each of your rows ('reference' in my case) so you can externally track their states (what the TODO in getTreeState documentation says.)

// var treeState = [];
onRegisterApi: function(gridApi) {
    $scope.gridApi = gridApi;

    $scope.gridApi.core.registerRowsProcessor(function(rows, columns) {
        rows.forEach(function(row) {
            if (treeState[row.entity.reference] != null) {
                if (row.treeNode == null) row.treeNode = {};
                row.treeNode.state = treeState[row.entity.reference].state;
            }
        });
        return rows;
    }, 399)
// doc says that treeBase/View rows processors run in the 400-415 range 
// so i put back my tree node states before they execute.
// It feels like every time your data refresh, the rows are reset and rebuilt from scratch, 
// so the tree nodes are recreated from your data (and defaulted to 'collapsed')
// luckily, looks like the state is not overwritten if you set it before, it works...

    // Save state on state change
    $scope.gridApi.treeBase.on.rowExpanded($scope, function(row) {
        treeState[row.entity.reference] = { state: 'expanded' };
    });
    $scope.gridApi.treeBase.on.rowCollapsed($scope, function(row) {
        treeState[row.entity.reference] = { state: 'collapsed' };
    });
}