yjs/src/Struct/ItemString.js
2017-10-22 23:50:49 +02:00

37 lines
1.1 KiB
JavaScript

import { splitHelper, default as Item } from './Item.js'
import { logID } from '../MessageHandler/messageToString.js'
export default class ItemString extends Item {
constructor () {
super()
this._content = null
}
get _length () {
return this._content.length
}
_fromBinary (y, decoder) {
let missing = super._fromBinary(y, decoder)
this._content = decoder.readVarString()
return missing
}
_toBinary (encoder) {
super._toBinary(encoder)
encoder.writeVarString(this._content)
}
_logString () {
return `ItemJSON(id:${logID(this._id)},content:${JSON.stringify(this._content)},left:${logID(this._left)},origin:${logID(this._origin)},right:${logID(this._right)},parent:${logID(this._parent)},parentSub:${logID(this._parentSub)})`
}
_splitAt (y, diff) {
if (diff === 0) {
return this
} else if (diff >= this._length) {
return this._right
}
let item = new ItemString()
item._content = this._content.slice(diff)
this._content = this._content.slice(0, diff)
splitHelper(y, this, item, diff)
return item
}
}