AngularJS自定义URL验证指令

define(["../app"], function (app) {
    'use strict';
	app.directive('sshUrl', function($rootScope){
        "use strict";
        return {
            require: "ngModel",
            link: function (scope, element, attr, ngModel) {
                if (ngModel) {
                    var strRegex = /^((https|HTTPS|http|HTTP|ftp|FTP|rtsp|RTSP|mms|MMS)?:\/\/)?(([0-9a-zA-Z_!~*'().&=+$%-]+: )?[0-9a-zA-Z_!~*'().&=+$%-]+@)?((\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5]$)|([0-9a-zA-Z_!~*'()-]+\.)*([0-9a-zA-Z][0-9a-zA-Z-]{0,61})?[0-9a-zA-Z]\.[a-zA-Z]{2,6})(:[0-9]{1,4})?((\/?)|(\/[0-9a-zA-Z_!~*'().;?:@&=+$,%#-]+)+\/?)$/;
                }

                var customerUrlCheck = function (value) {
                    var validity = ngModel.$isEmpty(value) || strRegex.test(value);
                    ngModel.$setValidity("sshUrl", validity);
                    return validity ? value : undefined;
                };
                ngModel.$formatters.push(customerUrlCheck);
                ngModel.$parsers.push(customerUrlCheck);
            }
        };
    });
});

<form ng-submit="" id="adTrackForm" name="adTrackForm" novalidate>
        <div class="adtrack_add">
            <ul>
                <li><span>以下信息必须填写:</span></li>
                <li>
                    <span>目标URL<p>（在其媒体投放广告时所指向的URL）</p></span>
                    <div class="adtrack_add_input">*
                        <input ssh-url id="targetUrl" name="targetUrl" ng-model="urlconfig.targetUrl" placeholder="www.mydomain/product.html" required/>
                    </div>&nbsp;&nbsp;&nbsp;
                    <span style="color:red" ng-show="adTrackForm.targetUrl.$dirty && adTrackForm.targetUrl.$invalid">
                        <span ng-show="adTrackForm.targetUrl.$error.required">请输入目标URL</span>
                        <span ng-show="adTrackForm.targetUrl.$error.sshUrl">您设置的目标URL格式错误</span>
                    </span>
                </li>
			</ul>
		</div>
		<input class="btn btn-info timechange_button" ng-disabled="adTrackForm.targetUrl.$dirty && adTrackForm.targetUrl.$invalid" type="submit" value="提交"/>
</form>