TAChart.Series.Source.Sorted
lazarus / 55-TAChart

----------------------------------------------------------------------
WDB463 · 2011-06-30 08:01

By using the built-in sources the sorted property is not stored if it
is changed in the property editor. It must be set during FormCreate or
anywhere other during run time. Is this a feature or a bug?

----------------------------------------------------------------------
Ask · 2011-06-30 14:49

QuoteIs this a feature or a bug?
It is a little of both. Unfortunately, properties of built-in source
are not saved by the IDE,
and I am unable to fix that from inside of TAChart.
I have vague plans to fix this in the IDE, but they are very low
priority for me,
since I do not know IDE very well (and to not have commit rights for
it),
and TAChart already takes all the time I can spend on Lazarus.
As a workaround, you can create a separate ListSource at design time.

----------------------------------------------------------------------
WDB463 · 2011-06-30 15:16

This is not a problem and only one line of code.

----------------------------------------------------------------------
WDB463 · 2011-07-06 14:30

I believe I understand the problem:

Properties of TPersistent objects will be stored in the lfm file
inside the owner object (shown black in the property editor) while
properties of TComponent are not stored because normally they are
created and linked during design time by the form (shown brown/green
in the property editor) so that they are stored by them self.

The here used built-in component is therefore "underhand" made during
runtime and the design editor handle it as a component property in
general where only the name of a linked component is stored during
design time. Therefore this is not really a problem of the IDE.

I think the only way to overcome this a little confusing problem is to
write a special PropertyEditor for TCustomChartSource as part of the
package what is a mixture of TPersistentPropertyEditor and
TComponentPropertyEditor (but I do not have evaluate the specific
differences between both up to now). But I do not know if it's worth
the effort...

----------------------------------------------------------------------
Ask · 2011-07-06 15:22

Yes, that is correct.
It is not a high priority for me too -- there are lots of things to
do:
http://wiki.lazarus.freepascal.org/TAChart#Roadmap

But you are, of course, welcome to investigate and fix the issue.