Re: Mouse tracking with Tapestry

I’ll answer it this way:

	http://jumpstart.doublenegative.com.au/jumpstart7/examples/navigation/onactivateandonpassivate/3 <http://jumpstart.doublenegative.com.au/jumpstart7/examples/navigation/onactivateandonpassivate/3>

Hope this helps,

Geoff

> On 7 Apr 2017, at 2:07 PM, Phyambre <[email protected]> wrote:
> 
> Hi,
> 
> I would like to do mouse tracking with tapestry (know the coordinates of
> the mouse, the path of the DOM tree to the element that is being pointed
> and the text of that element).
> 
> Currently I have a solution that works, but I think it is terribly
> inefficient and I hope you can make any suggestions to improve it.
> 
> I have a JS library that calculates all those values and writes them to
> "input hidden" form fields in my .tml
> 
> Then I used the ZoneUpdater mixin:
> 
> http://jumpstart.doublenegative.com.au/jumpstart/examples/ajax/onevent
> 
> I modified ZoneUpdater.java by adding a List attribute. That list will
> contain the ids of the "input hidden fields" as you can see below.
> 
> Then, in the TML file, instead of
> 
> |<input t:type="TextField" t:id="firstName" t:mixins="zoneUpdater"
> t:clientEvent="keyup" t:event="firstNameChanged" t:zone="nameZone" /><br/>|
> 
> I have
> 
> <p class="paragraph" t:type="any" t:mixins="zoneUpdater"
> ZoneUpdater.clientEvent="mousemove" ZoneUpdater.event="track"
>            ZoneUpdater.zone="textZone"
> ZoneUpdater.fields="['documentHeightVal', 'documentWidthVal',
> 'windowHeightVal',
>            'windowWidthVal', 'windowOffsetYVal', 'windowOffsetXVal',
> 'mouseYVal','mouseXVal', 'domPathVal',
> 'overTextVal']">${currentParagraph}</p>
> 
> then in zone-updater.js I add all those values to the URL.
> 
> Finally, in my page file, the onTrack() method is executed.
> 
> The problem here is that onActivate() is also being exectued, and
> onActivate() has a lot of stuff that I want to execute only once (when
> the page loads) and not every time the user moves the mouse.
> 
> Is there any other solution that does not trigger onActivate() every
> time that the user moves the mouse on a component?
> 
> Regards,
> 
> Phy.
> 
>