[Dynapi-Dev] Inline performances

[Benoit Marchant]

Here's my findings:

speedtest.dynlayer-basic.inline.html: same code as speedtest.dynlayer-basic.html, except that the loop does call setID to set the inline property. I timed until all dynlayers are initialized.
There's not much difference, and some time inline is a bit slower. Since you have to loop the same amount of layers to create them anyway.
This is a little irrelevant in fact. The huge win with inline layers is that from a user point of view, everything is visible right away.
I played a little with the inline code to see what was going on, there was a serious gain by not doing

DynLayer._updateValues(this) in DynLayer.prototype._createInline. Accessing the values in dlyr.elm and dlyr.elm.style takes some times. Now if you think about it, server side, you know these values, so when you create the layer, you can just create it with its values.

For example, in speedtest.dynlayer-basic.inline.html, I could do

lyr=new DynLayer(null,x,y,20,20,'yellow');// Then passing the same values as the one I would findout by doing DynLayer._updateValue, instead of doing

lyr=new DynLayer();
and rely on _updateValue to fill the blanks.

The other thing that we could do might be even better. Why pay the price of initializing all of that when it could be done lazily ? If you were to use aLayer.css() instead of aLayer.css, then for inline layers, we could set this.css = something just if someone asks for it. The same is true for all the values set in DynLayer._updateValue.

As a side note, is it necessary to call captureMouseEvents() on a dynlayer that has no listener ?
in DynLayer._assignElement, there's a test I don't understand:

if (dlyr._hasMouseEvents) dlyr.captureMouseEvents();
and captureMouseEvents is the only place where 	this._hasMouseEvents is set to  true; ????


Feedback ?

Benoit