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14 KiB
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{"version":3,"sources":["../yjs/node_modules/browserify/node_modules/browser-pack/_prelude.js","src/IndexedDB.js"],"names":[],"mappings":"AAAA;ACAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA","file":"y-indexeddb.es6","sourceRoot":"/source/","sourcesContent":["(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})","/* global Y */\n'use strict'\n\nfunction extend (Y) {\n Y.requestModules(['memory']).then(function () {\n class Store {\n constructor (transaction, name) {\n this.store = transaction.objectStore(name)\n }\n * find (id) {\n return yield this.store.get(id)\n }\n * put (v) {\n yield this.store.put(v)\n }\n * delete (id) {\n yield this.store.delete(id)\n }\n * findWithLowerBound (start) {\n return yield this.store.openCursor(window.IDBKeyRange.lowerBound(start))\n }\n * findWithUpperBound (end) {\n return yield this.store.openCursor(window.IDBKeyRange.upperBound(end), 'prev')\n }\n * findNext (id) {\n return yield* this.findWithLowerBound([id[0], id[1] + 1])\n }\n * findPrev (id) {\n return yield* this.findWithUpperBound([id[0], id[1] - 1])\n }\n * iterate (t, start, end, gen) {\n var range = null\n if (start != null && end != null) {\n range = window.IDBKeyRange.bound(start, end)\n } else if (start != null) {\n range = window.IDBKeyRange.lowerBound(start)\n } else if (end != null) {\n range = window.IDBKeyRange.upperBound(end)\n }\n var cursorResult\n if (range != null) {\n cursorResult = this.store.openCursor(range)\n } else {\n cursorResult = this.store.openCursor()\n }\n while ((yield cursorResult) != null) {\n yield* gen.call(t, cursorResult.result.value)\n cursorResult.result.continue()\n }\n }\n * flush () {}\n }\n\n function createStoreClone (Store) {\n class Clone extends Store {\n constructor () {\n super(...arguments)\n this.buffer = []\n this._copyTo = null\n }\n // copy to this store\n // it may be neccessary to reset this every time you create a transaction\n copyTo (store) {\n this._copyTo = store\n return this\n }\n * put (v, dontCopy) {\n if (!dontCopy) {\n this.buffer.push(this._copyTo.put(v))\n }\n yield* super.put(v)\n }\n * delete (id) {\n this.buffer.push(this._copyTo.delete(id))\n yield* super.delete(id)\n }\n * flush () {\n yield* super.flush()\n for (var i = 0; i < this.buffer.length; i++) {\n yield* this.buffer[i]\n }\n yield* this._copyTo.flush()\n }\n }\n return Clone\n }\n Y.utils.createStoreClone = createStoreClone\n\n var BufferedStore = Y.utils.createSmallLookupBuffer(Store)\n var ClonedStore = Y.utils.createStoreClone(Y.utils.RBTree)\n\n class Transaction extends Y.Transaction {\n constructor (store) {\n super(store)\n var transaction = store.db.transaction(['OperationStore', 'StateStore', 'DeleteStore'], 'readwrite')\n this.store = store\n this.ss = new BufferedStore(transaction, 'StateStore')\n this.os = new BufferedStore(transaction, 'OperationStore')\n this._ds = new BufferedStore(transaction, 'DeleteStore')\n this.ds = store.dsClone.copyTo(this._ds)\n }\n }\n class OperationStore extends Y.AbstractDatabase {\n constructor (y, options) {\n super(y, options)\n // dsClone is persistent over transactions!\n // _ds is not\n this.dsClone = new ClonedStore()\n\n if (options == null) {\n options = {}\n }\n this.options = options\n if (options.namespace == null) {\n if (y.options.connector.room == null) {\n throw new Error('IndexedDB: expect a string (options.namespace)! (you can also skip this step if your connector has a room property)')\n } else {\n options.namespace = y.options.connector.room\n }\n }\n if (options.idbVersion != null) {\n this.idbVersion = options.idbVersion\n } else {\n this.idbVersion = 5\n }\n var store = this\n // initialize database!\n this.requestTransaction(function * () {\n store.db = yield window.indexedDB.open(options.namespace, store.idbVersion)\n })\n if (options.cleanStart) {\n delete window.localStorage[JSON.stringify(['Yjs_indexeddb', options.namespace])]\n this.requestTransaction(function * () {\n yield this.os.store.clear()\n yield this._ds.store.clear()\n yield this.ss.store.clear()\n })\n }\n this.whenUserIdSet(function (userid) {\n if (window.localStorage[JSON.stringify(['Yjs_indexeddb', options.namespace])] == null) {\n window.localStorage[JSON.stringify(['Yjs_indexeddb', options.namespace])] = JSON.stringify([userid, 0])\n }\n })\n this.requestTransaction(function * () {\n // this should be executed after the previous two defined transactions\n // after we computed the upgrade event (see `yield indexedDB.open(..)`), we can check if userid is still stored on localstorage\n var uid = window.localStorage[JSON.stringify(['Yjs_indexeddb', options.namespace])]\n if (uid != null) {\n store.setUserId(uid)\n var nextuid = JSON.parse(uid)\n nextuid[1] = nextuid[1] + 1\n window.localStorage[JSON.stringify(['Yjs_indexeddb', options.namespace])] = JSON.stringify(nextuid)\n }\n // copy from persistent Store to not persistent StoreClone. (there could already be content in Store)\n yield* this._ds.iterate(this, null, null, function * (o) {\n yield* this.ds.put(o, true)\n })\n })\n this.operationAddedNamespace = JSON.stringify(['__YJS__', this.options.namespace])\n var operationsToAdd = []\n window.addEventListener('storage', function (event) {\n if (event.key === store.operationAddedNamespace) {\n operationsToAdd.push(JSON.parse(event.newValue))\n var op, i // helper variables\n if (operationsToAdd.length === 1) {\n store.requestTransaction(function * () {\n /* about nextRound:\n if op is not a delete, we retrieve it again from the db\n then it could be true that op.left is not yet added to store\n - but the types _change function expects that it is..\n In this case left has to be executed first\n\n What is left to say: we only put ready to execute ops in nextRound!\n\n TODO: implement a smart buffer in eventHelper!!!!!\n */\n var nextRound = []\n for (i = 0; i < operationsToAdd.length; i++) {\n op = operationsToAdd[i]\n if (op.struct !== 'Delete') {\n op = yield* this.getOperation(op.id)\n while (op.left != null) {\n var left = yield* this.getOperation(op.left)\n if (!left.deleted) {\n break\n }\n op.left = left.left\n }\n }\n nextRound.push(op)\n }\n operationsToAdd = []\n while (nextRound.length > 0) {\n var add = nextRound\n nextRound = []\n for (i = 0; i < add.length; i++) {\n op = add[i]\n if (op.struct === 'Insert') {\n var ready = true\n for (let j = i + 1; j < add.length; j++) {\n let _op = add[j]\n if (Y.utils.compareIds(_op.id, op.left)) {\n ready = false\n break\n }\n }\n if (ready) {\n for (let j = 0; j < nextRound.length; j++) {\n let _op = add[j]\n if (Y.utils.compareIds(_op.id, op.left)) {\n ready = false\n break\n }\n }\n }\n if (!ready) {\n // it is necessary to execute left first\n nextRound.push(op)\n continue\n }\n }\n yield* this.store.operationAdded(this, op, true)\n }\n }\n })\n }\n }\n }, false)\n }\n * operationAdded (transaction, op, noAdd) {\n yield* super.operationAdded(transaction, op)\n if (!noAdd) {\n window.localStorage[this.operationAddedNamespace] = JSON.stringify(op)\n }\n }\n transact (makeGen) {\n var transaction = this.db != null ? new Transaction(this) : null\n var store = this\n\n var gen = makeGen.call(transaction)\n handleTransactions(gen.next())\n\n function handleTransactions (result) {\n var request = result.value\n if (result.done) {\n makeGen = store.getNextRequest()\n if (makeGen != null) {\n if (transaction == null && store.db != null) {\n transaction = new Transaction(store)\n }\n gen = makeGen.call(transaction)\n handleTransactions(gen.next())\n } // else no transaction in progress!\n return\n }\n console.log('new request', request.source != null ? request.source.name : null)\n if (request.constructor === window.IDBRequest) {\n request.onsuccess = function () {\n var res = request.result\n if (res != null && res.constructor === window.IDBCursorWithValue) {\n res = res.value\n }\n handleTransactions(gen.next(res))\n }\n request.onerror = function (err) {\n gen.throw(err)\n }\n } else if (request.constructor === window.IDBCursor) {\n request.onsuccess = function () {\n handleTransactions(gen.next(request.result != null ? request.result.value : null))\n }\n request.onerror = function (err) {\n gen.throw(err)\n }\n } else if (request.constructor === window.IDBOpenDBRequest) {\n request.onsuccess = function (event) {\n var db = event.target.result\n handleTransactions(gen.next(db))\n }\n request.onerror = function () {\n gen.throw(\"Couldn't open IndexedDB database!\")\n }\n request.onupgradeneeded = function (event) {\n var db = event.target.result\n try {\n delete window.localStorage[JSON.stringify(['Yjs_indexeddb', store.options.namespace])]\n db.deleteObjectStore('OperationStore')\n db.deleteObjectStore('DeleteStore')\n db.deleteObjectStore('StateStore')\n } catch (e) {}\n db.createObjectStore('OperationStore', {keyPath: 'id'})\n db.createObjectStore('DeleteStore', {keyPath: 'id'})\n db.createObjectStore('StateStore', {keyPath: 'id'})\n }\n } else {\n gen.throw('You must not yield this type!')\n }\n }\n }\n // TODO: implement \"free\"..\n * destroy () {\n this.db.close()\n yield window.indexedDB.deleteDatabase(this.options.namespace)\n }\n }\n Y.extend('indexeddb', OperationStore)\n })\n}\n\nmodule.exports = extend\nif (typeof Y !== 'undefined') {\n extend(Y)\n}\n"]} |