I had originally seen colored buttons to click and change between the
black, red and green view layouts, but I like the tab idea, create a
'debug-01' tab which consolidates nodes of interest, a 'doc' tab which
intersperses narrative ...

I think of Leo files as databases, xml definitions of annotated nodes,
arranged into a hierarchy, the Leo application a tool to work with this
data. The current discussion of new approaches to viewing node
arrangement sounds like introducing 'edges' to replace the current
'physical' tree structure in the xml file. That strikes me as evolution
towards a more powerful data storage model.

As is so often the case with Leo, there isn't really an existing analog,
so it's hard to answer the question 'what would you do with that?'

Thanks,
Kent

On Sat, Feb 13, 2016 at 12:58 PM, Edward K. Ream <[email protected]> wrote:
> Here are some recent thoughts about "different colored threads."
>
> 1. The discussion about attributes is interesting and valuable. It will be
> good to continue it.  It's already stimulated my thinking.  However, it
> clearly is a solvable implementation issue.
>
> 2. Imo, the crucial questions relate to use cases. How will this work? What
> will it look like? To reprise the refrain, "I love clones, I hate clones":
>
> Clones can be great for unit testing: I put them under @test nodes.  This
> makes it possible to run tests on the latest code without running tests
> externally. Very convenient, and super fast.
>
> Alas, I am fed up with with searches finding clones over and over again.
> This was almost intolerable when I cloned much of the make_stub_files code
> under each of the 10 @test nodes in the make_stub_files project. Yes, there
> are alternatives to searching the whole tree, but I typically don't use what
> already exists!
>
> Just one or two keystrokes can make a huge difference to work flow.
> Ideally, I'd like a work flow that "just works" without any additional
> setup. When I'm deep in the mood of programming, I don't want anything to be
> a distraction.  I want a work flow that I can always use.
>
> It's kinda like dwim (do what I mean).  Maybe I could call it smwiw (show me
> what I want).  All this fancy switcheroo technology (switching from one set
> of colored threads to a set of differently colored threads) might just add
> complexity and confusion.  Otoh, it looks perfect for switching between
> chapters or hoists.  Hmm.
>
> As a thought experiment, perhaps even a prototype, consider that switching
> colors of threads is much like switching tabs. Searches only can match what
> is visible in the selected tab.  Changing hoists or chapters switches tabs.
> Changing what attributes are visible also changes tab.
>
> Note: I think it's best to think of attributes in this sense as arbitrary
> predicates that return True/False for every node. In this discussion, we
> don't care much how the predicates are defined.  Naturally, though, it makes
> a big practical difference.
>
> This is as far as my thinking goes.  We'll see where this switching tabs
> analogy bears any fruit. As part of thought experiment I'm going to assume
> that there are an unlimited supply of available key bindings.  Equivalently,
> we can assume that Leo will read our minds about what we want, especially
> what panes have focus, what they show and how to switch effortlessly between
> them.  This may be the most general way of thinking about user interfaces.
>
> Your comments, please.
>
> Edward
>
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