• Vue.directive('permission', permission);

export const permission = {
 inserted(el, binding) {
   checkRolePermission(el, binding, 'permission');
 }
};


function checkRolePermission(el, binding, type) {
 const {value} = binding;
 if (value && value instanceof Array && value.length > 0) {
   const permissionRoles = value;
   let hasPermission = false;
   if (type === 'roles') {
     hasPermission = hasRoles(...permissionRoles);
   } else if (type === 'permission') {
     hasPermission = hasPermissions(...permissionRoles);
   }
   if (!hasPermission) {
     el.parentNode && el.parentNode.removeChild(el);
   }
 }
}

export function hasPermissions(...permissions) {
 for (let p of permissions) {
   if (hasPermission(p)) {
     return true;
   }
 }
 return false;
}
// 是否含有某个角色
export function hasRoles(...roles) {
 let user = getCurrentUser();
 let rs = user.roles.map(r => r.id);
 for (let item of roles) {
   if (rs.indexOf(item) > -1) {
     return true;
   }
 }
 return false;
}

• Vue.directive('roles', roles);

// 基本同*Vue.directive('permission', permission);
export const roles = {
  inserted(el, binding) {
    checkRolePermission(el, binding, 'roles');
  }
};

• Vue.directive('xpack', xpack);

export const xpack = {
  inserted(el, binding) {
    checkLicense(el, binding);
  }
};


function checkLicense(el, binding, type) {
  let v = hasLicense();

  if (!v) {
    el.parentNode && el.parentNode.removeChild(el);
  }
}

export function hasLicense() {
  let v = localStorage.getItem(LicenseKey);
  return v === 'valid';
}

• Vue.directive('modules', modules);

export const modules = {
  inserted(el, binding) {
    checkModule(el, binding);
  }
};


function checkModule(el, binding) {
  const {value} = binding;
  if (value && value instanceof Array && value.length > 0) {
    let v = enableModules(...value);
    if (!v) {
      el.parentNode && el.parentNode.removeChild(el);
    }
  }
}

export function enableModules(...modules) {
  for (let module of modules) {
    let moduleStatus = localStorage.getItem('module_' + module);
    if (moduleStatus === 'DISABLE') {
      return false;
    }
  }
  return true;
}