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Use case - user wishes to avoid useing mouse to select Diagram elements. User wishes to use keyboard. Recommendation - Tab - depth first traversal of diagram node tree Shift-Tab - reverse order traversal See Mattisse UI for example. Issues and questions: If current node is collapsed, shoud the Tab action auto-expand it for deep traversal. I think we should skip to next visible node and not auto-expand the collapsed node.
Question - should up arrow and down arrow also provide traversal? In Matisse UI builder, the up and down arrow do NOT provide traversal.
IMHO using arrow keys is more comfortable and user friendly way. So I think that we should use up and down arrows to provide traversal. Also IMO next usual actions should be supported too: "Page Up" and "Page Down" actions "ctrl+HOME" and "ctrl+END" - correspondingly top and bottom of the document We have special action to collapse/expand nodes, so tab shouldn't perform it in order don't confuse user. We can add shortcuts for these actions. Generally in Jtree right and left arrows perform expand collapse operations. But there is a Question: should we use left/right arrow to switch selection to the more left/right element ? But in case of diagramm we can use right/left arrow to switch selections to more right/left elements. So What kind of actions should we use for left/right arrows ? I prefer mentioned way in this case e.g. "ctrl right" and "ctrl left" actions could perform expand/collapse operations.
Done
Verified the feature is implemented in Gavotte nightly build 061221_12.