通过ftype而不是id获取网格特征

Question

I am writing a generic class which is derived from ExtJS grid, and I have to check that the grouping feature is used during toolbar instantiation (if grouping is enabled, I want to auto-add two buttons to collapse/expand all groups).

var groupingFeature = me.getView().getFeature("grouping")
if(groupingFeature && me.store.grouper) {
    me.toolbar.insert(0,[{
        iconCls:'icon-plus',
        handler:function() {
            groupingFeature.expandAll();
        }
    },{
        iconCls:'icon-minus',
        handler:function() {
            groupingFeature.collapseAll();
        }
    }]);
}

But the grouping feature is not selected, because getFeature only works with ID (and I can't rely that a special id is added to every grouping feature).

Is there a way to get the feature by ftype ?

Answer 1

You could search by ftype in a loop over the features array or use the private Method findFeature of the Ext.grid.View, which is doing this. By the extjs documentation :

Finds a features by ftype in the features array

So using this function, you should get you the required information.

var view = me.getView();
var groupingFeature = view.findFeature("grouping");