[OpenLayers-Users] Panel with Navigation control, mouse wheel zoom deactivated

[Armin Burger]

I found now a solution to remove this strange (but likely intended) 
behaviour. In case some is interested:

The deactivation of the mouse wheel for all other controls in the panel 
is caused by the deactivation in the Navigation.js -> deactivate() 
function. If one removes/comments out there the line

   this.handlers.wheel.deactivate();

the mouse wheel function is available also for the other panel tools. If 
one wants to keep also the drag/pan function (useful for example for a 
map identify tool), one can also remove or comment out the line

this.dragPan.deactivate();

I put everything outside in a function to overwrite the standard 
Navigation behaviour, like

OpenLayers.Control.Navigation.prototype.deactivate = function() {
     if (this.pinchZoom) {
         this.pinchZoom.deactivate();
     }
     this.zoomBox.deactivate();
     //this.dragPan.deactivate();
     this.handlers.click.deactivate();
     //this.handlers.wheel.deactivate();
     return OpenLayers.Control.prototype.deactivate.apply(this,arguments);
}

So far at least I have not noticed negative side effects of this 
modification.

armin


On 04/03/2012 18:59, Armin Burger wrote:
> Hi everybody
>
> I noticed that if I replace in the panel control the "MouseDefaults"
> control with the "Navigation" control then the default mouse operation
> for the mouse wheel (zoom in/out) is deactivated if any other tool than
> the Navigation (e.g. the zoom control) is active.
>
> If I switch back to using MouseDefaults instead, then everything is fine
> (but this control is marked as deprecated...). One can easily see this
> behaviour with the "panel.html" from the "examples" directory. Is this
> deactivated mouse wheel zoom an intended behaviour? I have not found any
> setting that would avoid this.
>
> Thx in advance for any help
> Armin
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