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From Vadim Gritsenko <va...@reverycodes.com>
Subject Re: ImageMap widget for CForms
Date Tue, 31 May 2005 13:43:16 GMT
Luca Morandini wrote:
> Folks,
> 
> I made my first Cocoon widget :)
> 
> It isn't at all that hard, though I managed to waste time by trying to 
> subclass my widget from the Action class :(
> 
> Anyway, here's how to use it:
> 1) Definition document:
> <fd:imagemap id="map">
>     <fd:hint>
>         <i18n:text>refresh.hint.mapZoomin</i18n:text>
>     </fd:hint>
>     <fd:on-action>
>         <javascript>onClickMap();</javascript>
>     </fd:on-action>
> </fd:imagemap>
> 
> 2) Template document:
> <ft:widget id="map">
>     <fi:styling border="2"/>
> </ft:widget>
> 
> 3) No binding required.
> 
> 4) Flow:
> function onClickMap () {
> 
>     var x= Number(cocoon.request.getParameter("map.x"));
>     var y= Number(cocoon.request.getParameter("map.y"));

Eww!


>     var uri;
>     
>     uri= "<zoomed map uri/>";
>     frm.getWidget().lookupWidget("map").setImageSource(uri);

Widget is available through event.sourceWidget, IIRC.


> }
> 
> So, the image map's URI is set by setImageSource(); when the user clicks 
> on it the onClickMap (or whatever is specified in on-action)  flowscript 
> is called, which gets mouse coordinates from request parameters.
> 
> Simple, isn't it ?
> 
> If someone would like some features to be added, this is the right time 
> to speak... otherwise I'll make a zipball and donate the thing.

It would be nice to have widget coordinates be part of the event.


> BTW, I'd like mouse coordinates to be retrieved by querying the map 
> widget rather than the request object... anyone knows a simple way to do 
> this from within the widget class (subclass of AbstractWidget) ?

Just create your own MapEvent with x, y fields.

Vadim

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