Re: Notebooks and GLists

[Michal Suchanek <hramrach centrum cz>]

On 30 August 2011 23:08, Neil Munro <neilmunro gmail com> wrote:
> Hi folks
> Â Â Â Â Â Not a very descript title, but I fail to come up with a better
> one. Anyway my problem is as follows.
>
> I have a notebook with reorderable tabs which each displays a sourceview
> widget.
> Each sourceview widget represents a document where a document is an instance
> of an object/struct.
> When the tabs are re-ordered the glist becomes out of order with the tabs
> and needs to be updated to reflect the new page positions.
>
> Using the page-reordered signal and callback I can get the new page position
> but not the old position.
>
> If there is a better way to go about implementing a system like this, I
> would be willing to hear it and any help is appreciated.
>
> Finally you can get the code here: https://gitorious.org/x2

You did not implement any Reorder. In absence of any code to comment
on I suggest you save the old order (= the last order known to your
code) in another GList and when you receive a reorder event you can
compare the new position with the saved position.

You need these two GLists to hold the same (or convertible) unique
values. eg. pointer to tab is one sufficiently unique value.

Pointer to tab and pointer a struct containing a pointer to tab is an
example of trivially convertible (and often very useful) unique
values.

HTH

Michal