CKEditor link dialog removing protocol

After much research, debugging and tweaking, I've finally managed to pull this off!!!

Here's how I do it:

CKEDITOR.on('dialogDefinition', function(e) {
    // NOTE: this is an instance of CKEDITOR.dialog.definitionObject
    var dd = e.data.definition; 

    if (e.data.name === 'link') {
        dd.minHeight = 30;

        // remove the unwanted tabs
        dd.removeContents('advanced');
        dd.removeContents('target');
        dd.removeContents('upload');

        // remove all elements from the 'info' tab
        var tabInfo = dd.getContents('info');
        while (tabInfo.elements.length > 0) {
            tabInfo.remove(tabInfo.elements[0].id);
        }

        // add a simple URL text field
        tabInfo.add({
            type : 'text',
            id : 'urlNew',
            label : 'URL',
            setup : function(data) {
                var value = '';
                if (data.url) {
                    if (data.url.protocol) {
                        value += data.url.protocol;
                    }
                    if (data.url.url) {
                        value += data.url.url;
                    }
                } else if (data.email && data.email.address) {
                    value = 'mailto:' + data.email.address;
                }
                this.setValue(value);
            },
            commit : function(data) {
                data.url = { protocol: '', url: this.getValue() };
            }
        });
    }
});