50 lines
1.4 KiB
JavaScript
50 lines
1.4 KiB
JavaScript
import { getReference } from '../Util/structReferences.js'
|
|
|
|
export function deleteItemRange (y, user, clock, range) {
|
|
let items = y.os.getItems(this._target, this._length)
|
|
for (let i = items.length - 1; i >= 0; i--) {
|
|
items[i]._delete(y, false)
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Delete is not a real struct. It will not be saved in OS
|
|
*/
|
|
export default class Delete {
|
|
constructor () {
|
|
this._targetID = null
|
|
this._length = null
|
|
}
|
|
_fromBinary (y, decoder) {
|
|
this._targetID = decoder.readID()
|
|
this._length = decoder.readVarUint()
|
|
}
|
|
_toBinary (encoder) {
|
|
encoder.writeUint8(getReference(this.constructor))
|
|
encoder.writeID(this._targetID)
|
|
encoder.writeVarUint(this._length)
|
|
}
|
|
/**
|
|
* - If created remotely (a remote user deleted something),
|
|
* this Delete is applied to all structs in id-range.
|
|
* - If created lokally (e.g. when y-array deletes a range of elements),
|
|
* this struct is broadcasted only (it is already executed)
|
|
*/
|
|
_integrate (y, locallyCreated = false) {
|
|
if (!locallyCreated) {
|
|
// from remote
|
|
const id = this._targetID
|
|
deleteItemRange(y, id.user, id.clock, this._length)
|
|
} else {
|
|
// from local
|
|
y.connector.broadcastStruct(this)
|
|
}
|
|
if (y.persistence !== null) {
|
|
y.persistence.saveOperations(this)
|
|
}
|
|
}
|
|
_logString () {
|
|
return `Delete - target: ${this._target}, len: ${this._length}`
|
|
}
|
|
}
|