Re: [Gwt-openlayers-users] openlayers-gwt question

[Edwin C. <com...@gm...>]

Hi Andrew,

If you want to make a custom control into a reusable control, I would
create a javascript file saying

My.Namespacing.Object.ShiftClickDrag = OpenLayers.Util.extend( ... see
example ...);

And then wrap the ShiftClickDrag in a way similar to any other Control
is wrapped in GWT-OL, but in a separate GWT-OL-Extension lib. For the
latter I can only recommend to look at the code in the Mercurial
repository.

Greetings,
Edwin

2009/10/14 Andrew Mason <an...@en...>:
> Dear Edwin,
> I am attempting to implement the functionality displayed
> here http://www.openlayers.org/dev/examples/custom-control.html
> using openlayers-gwt
> The javascript code is this:
>
>  var control = new OpenLayers.Control();
>                 OpenLayers.Util.extend(control, {
>                     draw: function () {
>                         // this Handler.Box will intercept the
> shift-mousedown
>                         // before Control.MouseDefault gets to see it
>                         this.box = new OpenLayers.Handler.Box( control,
>                             {"done": this.notice},
>                             {keyMask: OpenLayers.Handler.MOD_SHIFT});
>                         this.box.activate();
>                     },
>
>                     notice: function (bounds) {
>                         var ll = map.getLonLatFromPixel(new
> OpenLayers.Pixel(bounds.left, bounds.bottom));
>                         var ur = map.getLonLatFromPixel(new
> OpenLayers.Pixel(bounds.right, bounds.top));
>                         alert(ll.lon.toFixed(4) + ", " +
>                               ll.lat.toFixed(4) + ", " +
>                               ur.lon.toFixed(4) + ", " +
>                               ur.lat.toFixed(4));
>                     }
>                 });
>
>                 map.addLayer(layer);
>                 map.addControl(control);
>
> But I'm having difficulty identifying how this can be done using
> openlayers-gwt. Have you any advice you can give me on how to achieve this?
>
> Thank you
>
> Andrew Mason
>
> **************************************************
> Web enabled software design & development
> Andrew Mason
> Director
> Environ-IT Ltd.
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> e: an...@en...
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