On Tue, May 3, 2016 at 4:24 PM, Tavmjong Bah <tavmjong@...8...> wrote:

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I have been seeing the current CSS support taking in consideration the process of tracking the source of the property value of each object property.

We know the styles are added to 'style' attribute immediately on creation. Besides one can modify any attribute's value via the XML editor after altering the values in its right panel and clicking the 'Set' button. The modified value is saved and reflected in the drawing. And on opening the file in text editor, everything is alright.

Correct

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Next I merge the styles of the object via 'Stylesheet' in Extensions to a stylesheet, save it and open it in text editor, same attributes and values are saved in <style>.....</style> tags.

Yes.

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But now when I modify any attribute's value in XML editor, 'style' attribute and drawing are working right but the values are not updated in the stylesheet. Is this what I have to fix to track the source of values?

Basically, yes. Relying on an extension to create and manage style sheets is not a good idea. It is very limiting as to what can be done and it requires manual intervention.

The current implementation that writes styles to the saved svg file, is it all implemented in style-internal.h? Numerous flags have been used with different combinations. I have been able to understand a small portion of the workflow.

It would be helpful if you point me in some direction so that I can proceed further quickly.