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Re: syntax-aware selection in palette notebook

  • To: mathgroup at smc.vnet.net
  • Subject: [mg112189] Re: syntax-aware selection in palette notebook
  • From: "Ingolf Dahl" <ingolf.dahl at telia.com>
  • Date: Sat, 4 Sep 2010 03:59:40 -0400 (EDT)

If with "syntax-aware" means that you do Ctrl+. , you might achieve the same
by 

Button["SelectionMoveAllExpression", SelectionMove[EvaluationNotebook[],
All, Expression]]

But sometimes something is fishy with SelectionMove. Let us create four
additional buttons:

Button["SelectionMoveBeforeExpression", 
 SelectionMove[EvaluationNotebook[], Before, Expression]]

Button["SelectionMoveAfterExpression", 
 SelectionMove[EvaluationNotebook[], After, Expression]]

Button["SelectionMovePreviousExpression", 
 SelectionMove[EvaluationNotebook[], Previous, Expression]]

Button["SelectionMoveNextExpression", 
 SelectionMove[EvaluationNotebook[], Next, Expression]]

I have tested them on the expression

Sin[x] + Cos[y]

The first button, "SelectionMoveAllExpression", works as expected. To me it
seems a bit counterintuitive that a single bracket "[" is an expression, but
for Mathematica "everything is an expression", so OK with that. 
The button "SelectionMoveBeforeExpression" also seem okey, unless the cursor
is placed after the letter "i" in Sin. Then the cursor is just moved to the
position after S. Is "i" in "Sin" an expression?
The button "SelectionMoveAfterExpression" does not do anything at all, while
the button "SelectionMoveNextExpression" does the job that
"SelectionMoveAfterExpression" should have done, with a similar behavior
inside words as "SelectionMoveBeforeExpression".
And the button "SelectionMovePreviousExpression" does exactly the same job
as "SelectionMoveBeforeExpression".

In the tutorial " Manipulating Notebooks from the Kernel" the word
"Expression" is said to mean "complete subexpression".

Can someone be pedagogic and help me in my ignorance?

Best regards

Ingolf Dahl

> -----Original Message-----
> From: Murray Eisenberg [mailto:murray at math.umass.edu]
> Sent: den 22 augusti 2010 14:10
> To: mathgroup at smc.vnet.net
> Subject: [mg111963] syntax-aware selection in palette notebook
> 
> If I have a palette notebook already created, how can I open it in a way
> that I (1) see the underlying expressions; and (2) can select in a
> syntax-aware manner, just like you can with input expressions in an
> ordinary notebook?
> 
> Is there some way in Mathematica itself?
> 
> In Workbench?  If so, how do you open the palette notebook there that way?
> 
> --
> Murray Eisenberg                     murray at math.umass.edu
> Mathematics & Statistics Dept.
> Lederle Graduate Research Tower      phone 413 549-1020 (H)
> University of Massachusetts                413 545-2859 (W)
> 710 North Pleasant Street            fax   413 545-1801
> Amherst, MA 01003-9305



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