Simple Scale Combo

Here is a example of the scale combo factory which provides a function that helps building scales combos. They behaves like classical combos. The main difference is that users give a set of scales. Those scales are formated in a way they are human readable and localized in a next step. 


    var combo = GeoExt.widgets.createScaleComboBox(
        {scales: [2500,5000,10000,25000,50000]},
        {
            typeAhead: true,
            mode: 'local',
            triggerAction: 'all',
            selectOnFocus:true,
            emptyText: 'Choose a scale',
            applyTo: "combo1"
        }
    );

Scale combo to scale map

In this example, the map is zoom to scale when a value is chosen in the scale combobox. 


    var combo = GeoExt.widgets.createScaleComboBox(
        {scales: [500000, 10000000, 25000000, 50000000, 100000000]},
        {
            typeAhead: true,
            mode: 'local',
            triggerAction: 'all',
            selectOnFocus:true,
            emptyText: 'Choose a scale',
            applyTo: "combo2",
            listeners: {
                select: function(combo, record, index) {
                    map.zoomToScale(record.data.value);
                }
            }
        }
    );