Show errors from the system error log in a new window

showErrors.php

<?php
switch ($modx->event->name) {
	case 'OnManagerPageBeforeRender':
		// Определяем названия // Define titles on your language
		$lang['no'] = 'Нет'; //No
		$lang['yes'] = 'Есть'; //Yes
		$lang['errors'] = 'Ошибки'; //Errors
		$lang['errors_title'] = 'Открыть журнал ошибок в новом окне'; //Open the error log in a new window
		//
		$response = $modx->runProcessor('system/errorlog/get');
		$resObj = $response->getObject();
		$fsize = @filesize($resObj['name']);
		$resObj['size'] = round($fsize / 1000 / 1000,2).' MB';
		if ($fsize > 1) {
			$_txt = '<span>'.$lang['yes'].'</span>';
			$resObj['empty'] = false;
		} else {
			$_txt = $lang['no'];
			$resObj['empty'] = true;
		}
		$_html = "<style type=\"text/css\">
			.errorlog-li a {padding: 0 !important;margin-right: 7px !important;}
			.errorlog-li a span {color: red; background-color: white;padding: 5px;}
			#errorlog-box {background-color: #FFF;border: 2px solid #DDD;box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);position: absolute;width: 1200px;z-index: 5000;}
			#errorlog-box-title {background-color: #EFEFEF;padding: 10px 5px;margin: 3px;}
			#errorlog-box-body {height: 500px;padding: 10px 8px;overflow: auto;}
			#errorlog-box-title button {position: absolute;top: 5px;padding: 3px 6px !important;}
			#clearlog-btn {right: 35px;}
			#close-btn {right: 8px;}
		</style>\n";
		$_html .= '<script>
			function showLog(){
				var w = new Ext.Window({
					id: "errorlog-window",
				    height: 400,
				    width: 1200,
				    title: _("error_log"),
				    buttonAlign: "right",
				    items: [{
						xtype: "textarea",
						name: "log",
						hideLabel: true,
						id: "window-error-log-content",
						value: config.log,
						readOnly: true,
						height: "97%",
						width: "99%",
						hidden: config.tooLarge ? true : false
	                },{
						html: "<p>"+_("error_log_too_large",{name: config.name})+"</p>",
						id: "too-large-text",
						border: false,
						hidden: config.tooLarge ? false : true
                	},{
						xtype: "button",
						text: _("error_log_download",{size: config.size}),
						cls: "primary-button",
						id: "error-log-download-btn",
						style: "margin-top: 15px;",
						hidden: config.tooLarge ? false : true,
						handler: function () {location.href = MODx.config.connectors_url+"?action=system/errorlog/download&HTTP_MODAUTH="+MODx.siteId;},
						scope: this
                	}],
				    buttons: [{
			            text: _("error_log"),
			            handler: function () { location.href = "?a=system/event" },
			            scope: this
			          }, {
			            text: _("clear"),
			            id: "error-log-clear-btn",
			            disabled: config.empty ? true : false,
			            handler: function () {
			            	MODx.Ajax.request({
								url: MODx.config.connectors_url
								,params: {
									action: "system/errorlog/clear"
								}
								,listeners: {
									"success": {fn:function(r) {
										var log = Ext.getCmp("window-error-log-content");
										log.setValue(" ");
										config.log = " ";
										Ext.getCmp("error-log-clear-btn").disable();
										if (config.tooLarge) {
											log.show();
											Ext.getCmp("too-large-text").hide();
											Ext.getCmp("error-log-download-btn").hide();
											config.tooLarge = false;
										}
										document.getElementById("errorlog-result").innerHTML = lang.no;
									}}
								}
							});
			            }, scope: this
			          },{
			            text: _("close"),
			            handler: function () { w.close(); },
			            scope: this
			          }]
				}).show();
				
			}
			var config = '.$modx->toJSON($resObj).',
				lang = '.$modx->toJSON($lang).';
			Ext.onReady(function() {
				var usermenuUl = document.getElementById("modx-user-menu"),
					firstLi = usermenuUl.firstChild,
					errorlogLi = document.createElement("LI");

				errorlogLi.innerHTML = "<a href=\"javascript:void(0)\" onclick=\"return false;\">"+lang.errors+":</a><a id=\"errorlog-result\" href=\"javascript:showLog()\" title=\""+lang.errors_title+"\">'.$_txt.'</a>";
				errorlogLi.className = "errorlog-li";
				usermenuUl.insertBefore(errorlogLi, firstLi);
			});
</script>';
			$modx->controller->addHtml($_html);
		break;
}