[Users] GeoExt.MapPanel and TabPanel

[Andreas Hocevar]

Luca Casagrande wrote:
> Hi Pierre and thanks for your answer,
> adding null as you suggested brings the same problem :(
>   

Understandable. OpenLayers.Map also accepts a single argument configuration.

> What I don't understand is why if I set as active tab the first one,
> the page loads with no error and all is working fine.
>   

The problem is the way ExtJS hides elements by default, by setting
style.display to none. Try setting hideMode to "offsets" in your
mapPanel config, and see
http://www.extjs.com/deploy/dev/docs/source/Component.html#cfg-Ext.Component-hideMode
for more details.

>>     Code:
>>     var  mapTab = new Ext.TabPanel({
>>                                      region: 'center',
>>                                      deferredRender: false,
>>                                      activeTab: 0,
>>                                      items: [{
>>                                                html: '<p>Test</p>',
>>                                                title:'Welcome!',
>>                                                closable: false,
>>                                                autoScroll: true
>>                                              },
>>                                                new GeoExt.MapPanel({
>>                                                    title: ' Test',
>>     

                                                   hideMode: 'offsets',


>>                                                    closable : false,
>>                                                    map: new
>>     OpenLayers.Map(options),
>>                                                    center: [lon, lat],
>>                                                    zoom: 0,
>>                                                    layers: [..]
>>                                               })]
>>     });
>>     

Please report back if this fixes your issue.

Regards,
Andreas.

-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.