[Users] Disable Nodes on Zoom Event

[IT Intern]

Thank you so much Matt.  Your instructions to me were very patient and
concise.  Everything is working as you said it would and I can delete my old
sloppy code!  You were really a great help to me and I am very grateful :)

Sincerely,

elshae

On Thu, Oct 28, 2010 at 11:45 AM, Matt Priour
<mpriour at kestrelcomputer.com>wrote:

>  You have to "Apply" the patch. The exact instructions are SVN client
> dependant. If you are using SVN command-line then the OL wiki has good
> instructions. [1]
>
> If you are using something like TortiseSVN, then you would right click on
> the GeoExt root directory in the file explorer.
> Select TortiseSVN -> Apply Patch
> Then select the patch file and hit apply
>
> [1] http://trac.osgeo.org/openlayers/wiki/ApplyingPatches
>
> Matt Priour
> Kestrel Computer Consulting
>
>  *From:* IT Intern <itintern12 at gmail.com>
> *Sent:* Thursday, October 28, 2010 10:17 AM
> *To:* users at geoext.org
> *Subject:* Re: [Users] Disable Nodes on Zoom Event
>
> My apologies, just realized it is a patch file not a .js, but I still need
> to know where exactly it goes...
>
> On Thu, Oct 28, 2010 at 11:15 AM, IT Intern <itintern12 at gmail.com> wrote:
>
>> That's quite awesome!  Thanks Matt.  So now where do I apply this patch :p
>>
>> Do I just copy the file into
>> lib/GeoExt/widgets/treeand override the old LayerNode.js no worries???
>>
>> cheers,
>>
>> elshae
>>
>>
>>
>> On Thu, Oct 28, 2010 at 10:46 AM, Matt Priour <
>> mpriour at kestrelcomputer.com> wrote:
>>
>>>  OpenLayers already has a Map moveend event handler that will check to
>>> see if the layer is still in range (maxExtent, minResolution, maxResolution,
>>> minScale & maxScale are all tested)
>>> You should use one of these configuration options (maxResolution,
>>> minResolution are easiest) on the layers and let OL do the turning on/off
>>> layers for you.
>>>
>>> To have your GeoExt LayerNodes respond by enabling/disabling when layers
>>> are in/out of range, you can apply the autoDisable patch [1] attached to
>>> Ticket #235 (http://trac.geoext.org/attachment/ticket/235)
>>>
>>> [1]
>>> http://trac.geoext.org/attachment/ticket/235/autoDisableLayerNode.patch
>>>
>>> Matt Priour
>>> Kestrel Computer Consulting
>>>
>>>
>>>
>>>  *From:* IT Intern <itintern12 at gmail.com>
>>> *Sent:* Thursday, October 28, 2010 9:08 AM
>>> *To:* users at geoext.org
>>> *Subject:* [Users] Disable Nodes on Zoom Event
>>>
>>> Hello GeoExt Users,
>>>
>>> I have a zoom event that when a user zoom in and out of my map certain
>>> layers I setVisibility(false).  Now what I would like to do is have another
>>> event inside that event which disables the nodes of those layers when their
>>> setVisibilty(false) and enables them back when setVisibility(true).  I have
>>> some code and it kinda works, but the problem is the checkchange event does
>>> not only work when the zoomend event is done, but also anytime a user clicks
>>> the layer nodes.  I played a little with stopPropagation and that didn't do
>>> anything for me.  Actually I think my zoomend event could be much better
>>> coded and I would really love some suggestions.  I appreciate everyone
>>> taking their time to help me :)
>>>
>>> elshae
>>>
>>> Code:
>>>
>>> map.events.on({ "zoomend": function (e) {
>>>
>>>                   layerTree.on("checkchange", function (node, checked) {
>>>                     alert(node.text + "Inside event");
>>>                     if(checked == false)
>>>                         node.disable();
>>>                     else if(checked == true)
>>>                         node.enable();
>>>
>>>                 });
>>>
>>>                       if (this.getZoom() > 7) {
>>>                           tib_villages.setVisibility(true);
>>>                           tib_lakes.setVisibility(true);
>>>                           tib_townships.setVisibility(true);
>>>
>>>
>>>                     }
>>>                     else {
>>>
>>>                                     tib_villages.setVisibility(false);
>>>                                     tib_lakes.setVisibility(false);
>>>                                     tib_townships.setVisibility(false);
>>>
>>> //alert(layerTree.tib_villages.node.text);
>>>
>>>                         if (this.getZoom() > 5) {
>>>                               infrastructure.setVisibility(true);
>>>                               geography.setVisibility(true);
>>>                               geography2.setVisibility(true);
>>>                               tib_countys.setVisibility(true);
>>>
>>>                         }
>>>                         else{
>>>                             infrastructure.setVisibility(false);
>>>                             geography.setVisibility(false);
>>>                               geography2.setVisibility(false);
>>>                               tib_countys.setVisibility(false);
>>>                         }
>>>                     }//end else
>>>
>>>                 }//end function (e)
>>>
>>>             }); //end map.events.on
>>>
>>> ------------------------------
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at geoext.org
>>> http://www.geoext.org/cgi-bin/mailman/listinfo/users
>>>
>>
>>
>  ------------------------------
>
> _______________________________________________
> Users mailing list
> Users at geoext.org
> http://www.geoext.org/cgi-bin/mailman/listinfo/users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.geoext.org/pipermail/users/attachments/20101028/3ad789d4/attachment.htm