Hey Bryan,
thanks again for this hint, it is really helpful. I try to implement this in my
own piece, but due to limited brain and js capacities I can't figure out, what
I am doing wrong here. Here is the relevant part of my code:
Ext.namespace('Ext.selectdata');
Ext.selectdata.zooms = [
[-13.25, -28.77, 45.664, 9.828, 'Whole Africa']
];
var zoomstore = new Ext.data.ArrayStore({
fields: [{ name : 'ymin', type: 'float'}, { name : 'xmin',
type: 'float'}, { name : 'ymax', type: 'float'}, { name : 'xmax', type:
'float'}, { name : 'label', type: 'string'}],
data : Ext.selectdata.zooms
});
var drawControl = new OpenLayers.Control.DrawFeature(
layer,
OpenLayers.Handler.Polygon,
{handlerOptions: {multi: true}}
);
var mapPanel = new GeoExt.MapPanel({
region:'center',
title: "Map",
layers: [layer,base,roads],
extent: new OpenLayers.Bounds(-13.25, -28.77, 45.664, 9.828),
bbar: [
new GeoExt.Action({
control: drawControl,
text: "Create",
enableToggle: true
}), {
text: "Delete",
handler: function() {
gridPanel.getSelectionModel().each(function(rec) {
var feature = rec.get("feature");
modifyControl.unselectFeature(feature);
store.remove(rec);
if(feature.state !== OpenLayers.State.INSERT) {
feature.state = OpenLayers.State.DELETE;
layer.addFeatures([feature]);
}
});
}
},
new Ext.form.ComboBox({
tpl: '<tpl for="."><div ext:qtip="{label}"
class="x-combo-list-item">{label}</div></tpl>',
store: zoomstore,
displayField:'label',
typeAhead: true,
mode: 'local',
forceSelection: true,
triggerAction: 'all',
width:125,
emptyText:'Quick Zooms',
selectOnFocus:true,
listeners: {'select': function
(combo,record){this.mapPanel.map.zoomToExtent(new
OpenLayers.Bounds(record.data.ymin,record.data.xmin,record.data.ymax,record.data.xmax).transform(new
OpenLayers.Projection("EPSG:4326"), new
OpenLayers.Projection("EPSG:900913")));},
scope:this}
}),
"->", {
text: "Save",
handler: function() {
store.commitChanges();
saveStrategy.save();
}
}
]
});
mapPanel.map.addControl(drawControl);
var modifyControl = new OpenLayers.Control.ModifyFeature(layer);
mapPanel.map.addControl(modifyControl);
modifyControl.activate();
When I run the whole thing, it works, means the (single) selection option is
visible in the toolbar, but when I select it, Firebug gives me the following
error:
this.mapPanel is undefined
select(Object { name="combo"}, Object { name="record"})test4_...om.html (Zeile
126)
DomHelper()ext-all.js (Zeile 7)
DomHelper()ext-all.js (Zeile 7)
swfobject(Object { name="a"}, Object { name="b"})ext-all.js (Zeile 11)
swfobject(Object { name="b"})ext-all.js (Zeile 11)
DomHelper()ext-all.js (Zeile 7)
DomHelper()ext-all.js (Zeile 7)
DomHelper(Object { name="c"})ext-all.js (Zeile 7)
I(Object { name="M"})ext-all.js (Zeile 7)
[Break on this error] listeners: {'s...ayers.Projection("EPSG:900913")));},
test4_...om.html (Zeile 126)
It points to the line with the 'listeners' in the Combo Box, but I have no real
idea what this means or how I can fix this. Ideas / fixes (I think it is quite
a simple problem for a trained developer (which I am not)) are highly
appreciated. I also tried to examine the code from your example, but this did
not bring me any further....
Kind regards,
Philippe
Hi Philippe,
I have put together some
http://www.bryanmcbride.com/blog/geoexplorer_hacks_2 documentation for
implementing similar "Quick Zooms" in GeoExplorer. GeoExplorer is a
component of the http://opengeo.org/community/suite/ OpenGeo Suite , built
on OpenLayers and GeoExt. You can see the "Quick Zooms" in action
http://www.opengeohost.com/geoexplorer/ here . Hopefully this will get you
going in the right direction!
BRYAN
-----
Bryan R. McBride, GISP
http://www.bryanmcbride.com bryanmcbride.com
http://geoserving.net/ geoserving.net
--
View this message in context:
http://osgeo-org.1803224.n2.nabble.com/Define-several-states-of-view-Zoom-Area-tp5427671p5427774.html
Sent from the OpenLayers Users mailing list archive at Nabble.com.
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