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Port Undo/Redo approach with a clean API

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Kevin Jahns
2019-06-23 13:04:14 +02:00
parent 14df5b72af
commit 03458dc641
18 changed files with 793 additions and 290 deletions
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37
src/utils/Transaction.js
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@@ -207,23 +207,26 @@ export const transact = (doc, f, origin = null) => {
}
}
}
// replace deleted items with ItemDeleted / GC
for (const [client, deleteItems] of ds.clients) {
const structs = /** @type {Array<AbstractStruct>} */ (store.clients.get(client))
for (let di = deleteItems.length - 1; di >= 0; di--) {
const deleteItem = deleteItems[di]
const endDeleteItemClock = deleteItem.clock + deleteItem.len
for (
let si = findIndexSS(structs, deleteItem.clock), struct = structs[si];
si < structs.length && struct.id.clock < endDeleteItemClock;
struct = structs[++si]
) {
const struct = structs[si]
if (deleteItem.clock + deleteItem.len <= struct.id.clock) {
break
}
if (struct.deleted && struct instanceof Item) {
struct.gc(store, false)
// Replace deleted items with ItemDeleted / GC.
// This is where content is actually remove from the Yjs Doc.
if (doc.gc) {
for (const [client, deleteItems] of ds.clients) {
const structs = /** @type {Array<AbstractStruct>} */ (store.clients.get(client))
for (let di = deleteItems.length - 1; di >= 0; di--) {
const deleteItem = deleteItems[di]
const endDeleteItemClock = deleteItem.clock + deleteItem.len
for (
let si = findIndexSS(structs, deleteItem.clock), struct = structs[si];
si < structs.length && struct.id.clock < endDeleteItemClock;
struct = structs[++si]
) {
const struct = structs[si]
if (deleteItem.clock + deleteItem.len <= struct.id.clock) {
break
}
if (struct instanceof Item && struct.deleted && !struct.keep) {
struct.gc(store, false)
}
}
}
}