Select and draw the appropriate editor depending on the type, metada and so on. Returns the modified value or VtValue

This is pretty similar to DrawBackgroundSelection in the SdfLayerSceneGraphEditor

DrawCurrentModal will check if there is anything to action like closing or draw ... it should really be called ProcessModalDialogs

Draw a preference like panel

TODO : show the types like "token" instead of TfToken

Text view + status bar of one tab (actions/preferences live in the menu bar).

Draws a menu list of all the sublayers, indented to reveal the parenting

Menu bar drawn above the file tabs. Actions operate on the currently active document; clicks set one-shot request flags consumed by DrawDocumentTab.

TODO that Should move to layerproperty

TODO : this is a duplicate, factorize the following function

Draw a prim type name combo

Draw a table with the variant selections

TODO

Work in progress

Draw a node in the primspec tree

Draw the hierarchy of the stage

This editor is specialized for list editor of tokens in the metadata. TODO: The code is really similar to DrawSdfPathListOneLinerEditor and ideally th

The easiest version of a timeline: a slider

TODO check if we can remove primSpec and use only SdfLayer and Selection

Returns unfolded