The nsIFormHistory object is a service which holds a set of name/value
 pairs.  The names correspond to form field names, and the values correspond
 to values the user has submitted.  So, several values may exist for a single
 name.

 Note: this interface provides no means to access stored values.
 Stored values are used by the FormFillController to generate
 autocomplete matches.
[scriptable, uuid(5d7d84d1-9798-4016-bf61-a32acf09b29d)]
interface nsIFormHistory2 : nsISupports

Attributes

 Returns the underlying DB connection the form history module is using.
readonly attribute mozIStorageConnection DBConnection 
 Returns true if the form history has any entries.
readonly attribute boolean hasEntries

Methods

 Adds a name and value pair to the form history.
void addEntry(in AString name, in AString value) 
 Gets whether a name and value pair exists in the form history.
boolean entryExists(in AString name, in AString value) 
 Returns true if there is no entry that is paired with a name.
boolean nameExists(in AString name) 
 Removes all entries in the entire form history.
void removeAllEntries() 
 Removes entries that were created between the specified times.

 @param aBeginTime
        The beginning of the timeframe, in microseconds
 @param aEndTime
        The end of the timeframe, in microseconds
void removeEntriesByTimeframe(in long long aBeginTime, in long long aEndTime) 
 Removes all entries that are paired with a name.
void removeEntriesForName(in AString name) 
 Removes a name and value pair from the form history.
void removeEntry(in AString name, in AString value)