yjs/lib/Types/JsonTypes.coffee
2015-02-17 21:10:46 +00:00

148 lines
4.7 KiB
CoffeeScript

text_types_uninitialized = require "./TextTypes"
module.exports = (HB)->
text_types = text_types_uninitialized HB
types = text_types.types
#
# Manages Object-like values.
#
class types.Object extends types.MapManager
#
# Identifies this class.
# Use it to check whether this is a json-type or something else.
#
# @example
# var x = y.val('unknown')
# if (x.type === "Object") {
# console.log JSON.stringify(x.toJson())
# }
#
type: "Object"
applyDelete: ()->
super()
cleanup: ()->
super()
#
# Transform this to a Json. If your browser supports Object.observe it will be transformed automatically when a change arrives.
# Otherwise you will loose all the sharing-abilities (the new object will be a deep clone)!
# @return {Json}
#
# TODO: at the moment you don't consider changing of properties.
# E.g.: let x = {a:[]}. Then x.a.push 1 wouldn't change anything
#
toJson: (transform_to_value = false)->
if not @bound_json? or not Object.observe? or true # TODO: currently, you are not watching mutable strings for changes, and, therefore, the @bound_json is not updated. TODO TODO wuawuawua easy
val = @val()
json = {}
for name, o of val
if o instanceof types.Object
json[name] = o.toJson(transform_to_value)
else if o instanceof types.ListManager
json[name] = o.toJson(transform_to_value)
else if transform_to_value and o instanceof types.Operation
json[name] = o.val()
else
json[name] = o
@bound_json = json
if Object.observe?
that = @
Object.observe @bound_json, (events)->
for event in events
if not event.changedBy? and (event.type is "add" or event.type = "update")
# this event is not created by Y.
that.val(event.name, event.object[event.name])
@observe (events)->
for event in events
if event.created_ isnt HB.getUserId()
notifier = Object.getNotifier(that.bound_json)
oldVal = that.bound_json[event.name]
if oldVal?
notifier.performChange 'update', ()->
that.bound_json[event.name] = that.val(event.name)
, that.bound_json
notifier.notify
object: that.bound_json
type: 'update'
name: event.name
oldValue: oldVal
changedBy: event.changedBy
else
notifier.performChange 'add', ()->
that.bound_json[event.name] = that.val(event.name)
, that.bound_json
notifier.notify
object: that.bound_json
type: 'add'
name: event.name
oldValue: oldVal
changedBy:event.changedBy
@bound_json
#
# @overload val()
# Get this as a Json object.
# @return [Json]
#
# @overload val(name)
# Get value of a property.
# @param {String} name Name of the object property.
# @return [Object Type||String|Object] Depending on the value of the property. If mutable it will return a Operation-type object, if immutable it will return String/Object.
#
# @overload val(name, content)
# Set a new property.
# @param {String} name Name of the object property.
# @param {Object|String} content Content of the object property.
# @return [Object Type] This object. (supports chaining)
#
val: (name, content)->
if name? and arguments.length > 1
if content? and content.constructor?
type = types[content.constructor.name]
if type? and type.create?
args = []
for i in [1...arguments.length]
args.push arguments[i]
o = type.create.apply null, args
super name, o
else
throw new Error "The #{content.constructor.name}-type is not (yet) supported in Y."
else
super name, content
else # is this even necessary ? I have to define every type anyway.. (see Number type below)
super name
#
# @private
#
_encode: ()->
{
'type' : @type
'uid' : @getUid()
}
types.Object.parse = (json)->
{
'uid' : uid
} = json
new this(uid)
types.Object.create = (content, mutable)->
json = new types.Object().execute()
for n,o of content
json.val n, o, mutable
json
types.Number = {}
types.Number.create = (content)->
content
text_types