AngularJS - ng-switch-when中的多个条件

Question

我有一个相当长的ng-switch-when语句，还有一些重复匹配。

我已经读过，角度不支持多值ng-switch（即时使用v1.2.8 ），但已找到这篇文章：How can I use ng-switch to satisfy multiple, same conditions?分享如何图书馆可以修改。

我已经通过我的角度库找到 ngSwitchWhenDirective ：

var ngSwitchWhenDirective = ngDirective({
    transclude: 'element',
    priority: 800,
    require: '^ngSwitch',
    link: function(scope, element, attrs, ctrl, $transclude) {
          ctrl.cases['!' + attrs.ngSwitchWhen] = (ctrl.cases['!' + attrs.ngSwitchWhen] || []);
          ctrl.cases['!' + attrs.ngSwitchWhen].push({ transclude: $transclude, element: element });
    }
});

但是根据angabriel的建议，不能看出如何调整它：

config(function($routeProvider, $provide) {
/**
* overwrite angular's directive ngSwitchWhen
* can handle ng-switch-when="value1 || value2 || value3"
*/
$provide.decorator('ngSwitchWhenDirective', function($delegate) {
$delegate[0].compile = function(element, attrs, transclude) {
    return function(scope, element, attr, ctrl) {
      var subCases = [attrs.ngSwitchWhen];
      if(attrs.ngSwitchWhen && attrs.ngSwitchWhen.length > 0 && attrs.ngSwitchWhen.indexOf('||') != -1) {
      subCases = attrs.ngSwitchWhen.split('||');
    }
    var i=0;
    var casee;
    var len = subCases.length;
    while(i<len) {
        casee = $.trim(subCases[i++]);
        ctrl.cases['!' + casee] = (ctrl.cases['!' + casee] || []);
        ctrl.cases['!' + casee].push({ transclude: transclude, element: element });
    }
}
}
return $delegate;
});
});