yjs/lib/Frameworks/JsonFramework.coffee
2014-09-17 16:10:41 +02:00

111 lines
2.7 KiB
CoffeeScript

json_types_uninitialized = require "../Types/JsonTypes"
HistoryBuffer = require "../HistoryBuffer"
Engine = require "../Engine"
#
# Framework for Json data-structures.
# Known values that are supported:
# * String
# * Integer
# * Array
#
class JsonFramework
#
# @param {String} user_id Unique id of the peer.
# @param {Connector} Connector the connector class.
#
constructor: (user_id, Connector)->
@HB = new HistoryBuffer user_id
type_manager = json_types_uninitialized @HB
@types = type_manager.types
@engine = new Engine @HB, type_manager.parser
@HB.engine = @engine # TODO: !! only for debugging
@connector = new Connector @engine, @HB, type_manager.execution_listener, @
first_word = new @types.JsonType(@HB.getReservedUniqueIdentifier())
@HB.addOperation(first_word).execute()
uid_beg = @HB.getReservedUniqueIdentifier()
uid_end = @HB.getReservedUniqueIdentifier()
beg = @HB.addOperation(new @types.Delimiter uid_beg, undefined, uid_end).execute()
end = @HB.addOperation(new @types.Delimiter uid_end, beg, undefined).execute()
@root_element = new @types.ReplaceManager undefined, @HB.getReservedUniqueIdentifier(), beg, end
@HB.addOperation(@root_element).execute()
@root_element.replace first_word, @HB.getReservedUniqueIdentifier()
#
# @return JsonType
#
getSharedObject: ()->
@root_element.val()
#
# Get the initialized connector.
#
getConnector: ()->
@connector
#
# @see HistoryBuffer
#
getHistoryBuffer: ()->
@HB
#
# @see JsonType.setMutableDefault
#
setMutableDefault: (mutable)->
@getSharedObject().setMutableDefault(mutable)
#
# Get the UserId from the HistoryBuffer object.
# In most cases this will be the same as the user_id value with which
# JsonFramework was initialized (Depending on the HistoryBuffer implementation).
#
getUserId: ()->
@HB.getUserId()
#
# @see JsonType.toJson
#
toJson : ()->
@getSharedObject().toJson()
#
# @see JsonType.val
#
val : (name, content, mutable)->
@getSharedObject().val(name, content, mutable)
#
# @see Operation.on
#
on: ()->
@getSharedObject().on arguments...
#
# @see Operation.deleteListener
#
deleteListener: ()->
@getSharedObject().deleteListener arguments...
#
# @see JsonType.value
#
Object.defineProperty JsonFramework.prototype, 'value',
get : -> @getSharedObject().value
set : (o)->
if o.constructor is {}.constructor
for o_name,o_obj of o
@val(o_name, o_obj, 'immutable')
else
throw new Error "You must only set Object values!"
module.exports = JsonFramework
if window?
if not window.Y?
window.Y = {}
window.Y.JsonFramework = JsonFramework