/*
* Call this on cookies that were not set**, or on cookies whose inception
* date is newer than the current best cookie. If a cookie is being set
* to the value of another existing cookie, there may be more than one
* cookie type with the identical EXISTING best value. We just pick the
* first match in the order that the CookeType enumeration is declared.
*
* ** If the cookie was not previously set, there may not be another
* EXISTING cookie to override it's value. In this case, we set the
* target's state to NEW.
*/
private void setHowCookieWasRestoredOrReplaced(CookieType targetType, boolean isReplacement) {
CookieStates states = getCookieStates();
if (states.get(targetType) == NOT_SUPPORTED) {
return;
}
CookieState targetState = NEW;
for (CookieType otherType : CookieType.values()) {
if (otherType == targetType) {
continue;
}
// If a cookie was replaced by it's own ancestor, we want to treat it the same as EXISTING.
CookieState otherState = getCookieStates().get(otherType);
CookieState replacedFromStateForOtherType = replacedFromOlderState(otherType);
if (otherState == EXISTING || otherState == replacedFromStateForOtherType) {
targetState =
(isReplacement) ? replacedFromStateForOtherType : restoredFromState(otherType);
break;
}
}
states.set(targetType, targetState);
}
private void cascadeNewBestCookie(CookieType newBestCookieType) {
CookieStates states = getCookieStates();
CookieState restoredFromState = restoredFromState(newBestCookieType);
CookieState replacedFromState = replacedFromOlderState(newBestCookieType);
// Terminology:
// restored: means the cookie had no valid previous value
// replaced: means the cookie had a valid previous value that was replaced
//
for (CookieType otherType : CookieType.values()) {
CookieState otherState = states.get(otherType);
if (otherType == newBestCookieType || otherState == null) {
continue;
}
if (otherType == ETAG && otherState != RESET) {
states.setEtagState(LINKED_BUT_NOT_SYNCED);
continue;
}
switch (otherState) {
case EXISTING:
case REPLACED_BY_OLDER_SILVERLIGHT_COOKIE:
case REPLACED_BY_OLDER_FLASH_COOKIE:
case REPLACED_BY_OLDER_WEB_STORAGE_COOKIE:
case REPLACED_BY_OLDER_PLAIN_COOKIE:
case REPLACED_BY_OLDER_ETAG_COOKIE:
states.set(otherType, replacedFromState);
break;
case NEW:
case RESTORED_FROM_SILVERLIGHT_COOKIE:
case RESTORED_FROM_FLASH_COOKIE:
case RESTORED_FROM_WEB_STORAGE_COOKIE:
case RESTORED_FROM_PLAIN_COOKIE:
case RESTORED_FROM_ETAG_COOKIE:
states.set(otherType, restoredFromState);
break;
}
}
}