MODX Rich Introtext w/ Toggle

richIntro

<?php
/*
** richIntro
** Plugin checks if introtext is filled in yet, and hides it if not. Run 'onDocFormRender'
** http://g.recordit.co/VOYqBC3CnS.gif 
*/
$introtext = empty($resource->get('introtext'));
if($introtext){
    $modx->regClientStartupHTMLBlock('<script>Ext.onReady(function() {
        var introtext = Ext.getCmp("modx-resource-introtext");
        introtext.hide();});
    </script>');
}else{
    $modx->regClientStartupHTMLBlock('<script>Ext.onReady(function() {
            if(MODx.loadRTE) MODx.loadRTE("modx-resource-introtext");
            });</script>');
}

$modx->regClientStartupHTMLBlock('<style type="text/css">#x-form-el-modx-resource-introtext{width: 100%; overflow:hidden;}</style>');
$modx->regClientStartupHTMLBlock('<script>Ext.onReady(function() {

var group = Ext.getCmp("modx-resource-main-right");
var checkbox = new Ext.form.Checkbox({boxLabel:"Hide Introtext", id:"hide-introtext", hideLabel:true, checked: '.($introtext ? 'true':'false').', listeners:{
    \'check\': function(t,n,o){
        var introtext = Ext.getCmp("modx-resource-introtext");
        if(n){
            introtext.setValue("");
            introtext.hide();
            if(MODx.unloadRTE) MODx.unloadRTE("modx-resource-introtext");
        }else{
            introtext.show();
            if(MODx.loadRTE) MODx.loadRTE("modx-resource-introtext");
        }
      }
    }
});
group.items.add(checkbox);
});
</script>');