Improve the panel control

[avlee]

Recently, I want to extend the panel control to create some more complex controls, but I found that when the child controls is activated or inactivated the Panel control will always re-draw the child controls, and include invasive behavior which is not conducive to apply CSS style to the child controls.

So I rewrote the Panel control to make it simpler and more beneficial to be extended.

[bartvde]

Not a regression so bumping to 2.10.

[erilem]

panel.patch doesn't apply to current trunk. Also, the patch doesn't include changes to the Panel tests, and it is unlikely that such a patch wouldn't require changes to the Panel tests. Bumping.

[avlee]

I attached a new patch, the patch's goal is to avoid the controls are removed from the DOM when activate or deactivate the controls, a further goal is to make the panel control to accommodate more complex controls, not just the button. Currently supports more complex controls needs more work.

This is doing the right thing? If not, we can close this ticket.

[jorix]

Hi avlee

In response to your comment:9 in #2906:

Yes I know this ticket, but my approach was different, see #2862 and also the initial approach of #2946.

I also I have written code to control the visibility of the control icons on the panel, to create icons with text, and also to include a type of custom control into panels. But I have not posted any of these proposals. OpenLayers team is not too open to proposals in this area.

Regards,

Xavier