The approach that I have used goes something like this:
App.Layers = {
streets: new OpenLayers.Layer....,
zones: new OpenLayers.Layer....
}
App.Stores = {
streets: new GeoExt.data.FeatureStore({layer:App.Layers.streets,....}),
zones: new GeoExt.data.FeatureStore({layer:App.Layers.zones,....}),
featTypes: new Ext.data.ArrayStore({
fields:['name','key'],
data:[['Streets','streets'],['Restricted Areas','zones']]
})
}
App.ColModels = {
streets: new Ext.grid.ColumnModel({ ..... }),
zones: new Ext.grid.ColumnModel({ ..... })
}
//assume we have a GeoExt.MapPanel (App.Map), a GridPanel (App.FeatGrid)
with an OpenLayers.Control.SelectFeature (App.FeatSelect)
var layerSelector = new Ext.form.ComboBox({
store:App.Stores.featTypes,
valueField:'key',
displayField:'name',
listeners:{
select:function(combo,record,index){
var key = record.get(combo.valueField);
App.FeatGrid.reconfigure(App.Stores[key],App.ColModels[key]);
App.FeatSelect.setLayer(App.Layers[key]);
App.FeatGrid.selModel.bind(App.FeatSelect);
}
}
})
You can see that the select event of the combo box reconfigures the grid and
the select feature control with your newly selected layer and associated
store and column model.
Hope that helps somewhat
Matt Priour
From: truongxuan quang
Sent: Friday, March 18, 2011 9:58 AM
To: [email protected]
Subject: [Users] Combobox control Map layers & gridpanel
Dear list
Could you please let me know there is example or tutorial to create Combobox
to control and switch between layers or grid panel of thematic map similar
to this example http://api.geoext.org/1.0/examples/zoom-chooser.html but in
this link it presented change only of map scale. Because I would to
something similar to this example
http://api.geoext.org/1.0/examples/feature-grid.html but for 3 layers, and I
support to use combobox to control and switch among layers.
Many Thanks
Quang
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_______________________________________________
Users mailing list
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http://www.geoext.org/cgi-bin/mailman/listinfo/users
