/** * @private */Ext.define('Ext.util.paintmonitor.Abstract', { config: { element: null, callback: Ext.emptyFn, scope: null, args: [] }, eventName: '', monitorClass: '', constructor: function(config) { this.onElementPainted = this.onElementPainted.bind(this); this.initConfig(config); }, bindListeners: function(bind) { // eslint-disable-next-line max-len this.monitorElement[bind ? 'addEventListener' : 'removeEventListener'](this.eventName, this.onElementPainted, true); }, applyElement: function(element) { if (element) { return Ext.get(element); } }, updateElement: function(element) { this.monitorElement = Ext.Element.create({ classList: [Ext.baseCSSPrefix + 'paint-monitor', this.monitorClass] }, true); element.appendChild(this.monitorElement, true); element.addCls(Ext.baseCSSPrefix + 'paint-monitored'); this.bindListeners(true); }, onElementPainted: function() {}, destroy: function() { var me = this, monitorElement = me.monitorElement, parentNode = monitorElement.parentNode, element = me.getElement(); me.bindListeners(false); delete me.monitorElement; if (element && !element.destroyed) { element.removeCls(Ext.baseCSSPrefix + 'paint-monitored'); delete me._element; } if (parentNode) { parentNode.removeChild(monitorElement); } me.callParent(); }});