java.lang.Object
- java.lang.Enum<EHCReferrerPolicy>
- - com.helger.html.hc.html.links.EHCReferrerPolicy

All Implemented Interfaces:

IHCHasHTMLAttributeValue, com.helger.xml.microdom.IHasAttributeValue, Serializable, Comparable<EHCReferrerPolicy>
```
public enum EHCReferrerPolicy
extends Enum<EHCReferrerPolicy>
implements IHCHasHTMLAttributeValue
```
Referrer policy
Source: https://w3c.github.io/webappsec-referrer-policy/#referrer-policy

Since:

8.4.0.

Author:

Philip Helger

Enum Constant Summary

Enum Constants
Enum Constant	Description
`NO_REFERRER`	The simplest policy is "no-referrer", which specifies that no referrer information is to be sent along with requests to any origin.
`NO_REFERRER_WHEN_DOWNGRADE`	The "no-referrer-when-downgrade" policy sends a request’s full referrerURL stripped for use as a referrer for requests: whose referrerURL and current URL are both potentially trustworthy URLs, or whose referrerURL is a non-potentially trustworthy URL. Requests whose referrerURL is a potentially trustworthy URL and whose current URL is a non-potentially trustworthy URL on the other hand, will contain no referrer information.
`NONE`	The empty string "" corresponds to no referrer policy, causing a fallback to a referrer policy defined elsewhere, or in the case where no such higher-level policy is available, falling back to the default referrer policy.
`ORIGIN`	The "origin" policy specifies that only the ASCII serialization of the request’s referrerURL is sent as referrer information when making both same-origin-referrer requests and cross-origin-referrer requests.
`ORIGIN_WHEN_CROSS_ORIGIN`	The "origin-when-cross-origin" policy specifies that a request’s full referrerURL is sent as referrer information when making same-origin-referrer requests, and only the ASCII serialization of the origin of the request’s referrerURL is sent as referrer information when making cross-origin-referrer requests.
`SAME_ORIGIN`	The "same-origin" policy specifies that a request’s full referrerURL is sent as referrer information when making same-origin-referrer requests.
`STRICT_ORIGIN`	The "strict-origin" policy sends the ASCII serialization of the origin of the referrerURL for requests: whose referrerURL and current URL are both potentially trustworthy URLs, or whose referrerURL is a non-potentially trustworthy URL. Requests whose referrerURL is a potentially trustworthy URL and whose current URL is a non-potentially trustworthy URL on the other hand, will contain no referrer information.
`STRICT_ORIGIN_WHEN_CROSS_ORIGIN`	The "strict-origin-when-cross-origin" policy specifies that a request’s full referrerURL is sent as referrer information when making same-origin-referrer requests, and only the ASCII serialization of the origin of the request’s referrerURL when making cross-origin-referrer requests: whose referrerURL and current URL are both potentially trustworthy URLs, or whose referrerURL is a non-potentially trustworthy URL. Requests whose referrerURL is a potentially trustworthy URL and whose current URL is a non-potentially trustworthy URL on the other hand, will contain no referrer information.
`UNSAFE_URL`	The "unsafe-url" policy specifies that a request’s full referrerURL is sent along for both same-origin-referrer requests and cross-origin-referrer requests.

Field Summary

Fields
Modifier and Type Field Description

static EHCReferrerPolicy DEFAULT
Default policy: strict-origin-when-cross-origin

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`getAttrValue()`
`static EHCReferrerPolicy`	`getFromAttrValueOrNull(String sAttrValue)`
`static EHCReferrerPolicy`	`valueOf(String name)`	Returns the enum constant of this type with the specified name.
`static EHCReferrerPolicy[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.helger.html.hc.html.IHCHasHTMLAttributeValue
hasAttrValue

- Enum Constant Detail
  - NONE
```
public static final EHCReferrerPolicy NONE
```
    The empty string "" corresponds to no referrer policy, causing a fallback to a referrer policy defined elsewhere, or in the case where no such higher-level policy is available, falling back to the default referrer policy. This happens in Fetch’s main fetch algorithm, for example.
  - NO_REFERRER
```
public static final EHCReferrerPolicy NO_REFERRER
```
    The simplest policy is "no-referrer", which specifies that no referrer information is to be sent along with requests to any origin. The header Referer will be omitted entirely.
  - NO_REFERRER_WHEN_DOWNGRADE
```
public static final EHCReferrerPolicy NO_REFERRER_WHEN_DOWNGRADE
```
    The "no-referrer-when-downgrade" policy sends a request’s full referrerURL stripped for use as a referrer for requests:
    
    whose referrerURL and current URL are both potentially trustworthy URLs, or
    
    whose referrerURL is a non-potentially trustworthy URL.
    
    Requests whose referrerURL is a potentially trustworthy URL and whose current URL is a non-potentially trustworthy URL on the other hand, will contain no referrer information. A Referer HTTP header will not be sent.
  - SAME_ORIGIN
```
public static final EHCReferrerPolicy SAME_ORIGIN
```
    The "same-origin" policy specifies that a request’s full referrerURL is sent as referrer information when making same-origin-referrer requests.
    Cross-origin-referrer requests, on the other hand, will contain no referrer information. A Referer HTTP header will not be sent.
  - ORIGIN
```
public static final EHCReferrerPolicy ORIGIN
```
    The "origin" policy specifies that only the ASCII serialization of the request’s referrerURL is sent as referrer information when making both same-origin-referrer requests and cross-origin-referrer requests.
  - STRICT_ORIGIN
```
public static final EHCReferrerPolicy STRICT_ORIGIN
```
    The "strict-origin" policy sends the ASCII serialization of the origin of the referrerURL for requests:
    
    whose referrerURL and current URL are both potentially trustworthy URLs, or
    
    whose referrerURL is a non-potentially trustworthy URL.
    
    Requests whose referrerURL is a potentially trustworthy URL and whose current URL is a non-potentially trustworthy URL on the other hand, will contain no referrer information. A Referer HTTP header will not be sent.
  - ORIGIN_WHEN_CROSS_ORIGIN
```
public static final EHCReferrerPolicy ORIGIN_WHEN_CROSS_ORIGIN
```
    The "origin-when-cross-origin" policy specifies that a request’s full referrerURL is sent as referrer information when making same-origin-referrer requests, and only the ASCII serialization of the origin of the request’s referrerURL is sent as referrer information when making cross-origin-referrer requests.
  - STRICT_ORIGIN_WHEN_CROSS_ORIGIN
```
public static final EHCReferrerPolicy STRICT_ORIGIN_WHEN_CROSS_ORIGIN
```
    The "strict-origin-when-cross-origin" policy specifies that a request’s full referrerURL is sent as referrer information when making same-origin-referrer requests, and only the ASCII serialization of the origin of the request’s referrerURL when making cross-origin-referrer requests:
    
    whose referrerURL and current URL are both potentially trustworthy URLs, or
    
    whose referrerURL is a non-potentially trustworthy URL.
    
    Requests whose referrerURL is a potentially trustworthy URL and whose current URL is a non-potentially trustworthy URL on the other hand, will contain no referrer information. A Referer HTTP header will not be sent.
  - UNSAFE_URL
```
public static final EHCReferrerPolicy UNSAFE_URL
```
    The "unsafe-url" policy specifies that a request’s full referrerURL is sent along for both same-origin-referrer requests and cross-origin-referrer requests.
- Field Detail
  - DEFAULT
```
@Nonnull
public static final EHCReferrerPolicy DEFAULT
```
    Default policy: strict-origin-when-cross-origin
- Method Detail
  - values
```
public static EHCReferrerPolicy[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (EHCReferrerPolicy c : EHCReferrerPolicy.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static EHCReferrerPolicy valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null
  - getAttrValue
```
@Nonnull
@Nonempty
public String getAttrValue()
```
    Specified by:
    
    getAttrValue in interface com.helger.xml.microdom.IHasAttributeValue
  - getFromAttrValueOrNull
```
@Nullable
public static EHCReferrerPolicy getFromAttrValueOrNull(@Nullable
                                                       String sAttrValue)
```

Enum EHCReferrerPolicy

Enum Constant Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Methods inherited from interface com.helger.html.hc.html.IHCHasHTMLAttributeValue

Enum Constant Detail

NONE

NO_REFERRER

NO_REFERRER_WHEN_DOWNGRADE

SAME_ORIGIN

ORIGIN

STRICT_ORIGIN

ORIGIN_WHEN_CROSS_ORIGIN

STRICT_ORIGIN_WHEN_CROSS_ORIGIN

UNSAFE_URL

Field Detail

DEFAULT

Method Detail

values

valueOf

getAttrValue

getFromAttrValueOrNull