yjs/src/Struct/ItemString.js
2018-03-29 11:58:02 +02:00

48 lines
1.2 KiB
JavaScript

import { splitHelper, default as Item } from './Item.js'
import { logItemHelper } from '../MessageHandler/messageToString.js'
export default class ItemString extends Item {
constructor () {
super()
this._content = null
}
_copy () {
let struct = super._copy()
struct._content = this._content
return struct
}
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)
}
/**
* Transform this YXml Type to a readable format.
* Useful for logging as all Items and Delete implement this method.
*
* @private
*/
_logString () {
return logItemHelper('ItemString', this, `content:"${this._content}"`)
}
_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
}
}