[react-packager][streamline oss] Move open sourced JS source to react-native-github

Libraries/ReactIOS/ReactIOSReconcileTransaction.js

@@ -0,0 +1,99 @@
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ *
+ * @providesModule ReactIOSReconcileTransaction
+ * @typechecks static-only
+ */
+
+"use strict";
+
+var CallbackQueue = require('CallbackQueue');
+var PooledClass = require('PooledClass');
+var Transaction = require('Transaction');
+
+/**
+ * Provides a `CallbackQueue` queue for collecting `onDOMReady` callbacks during
+ * the performing of the transaction.
+ */
+var ON_DOM_READY_QUEUEING = {
+  /**
+   * Initializes the internal `onDOMReady` queue.
+   */
+  initialize: function() {
+    this.reactMountReady.reset();
+  },
+
+  /**
+   * After DOM is flushed, invoke all registered `onDOMReady` callbacks.
+   */
+  close: function() {
+    this.reactMountReady.notifyAll();
+  }
+};
+
+/**
+ * Executed within the scope of the `Transaction` instance. Consider these as
+ * being member methods, but with an implied ordering while being isolated from
+ * each other.
+ */
+var TRANSACTION_WRAPPERS = [ON_DOM_READY_QUEUEING];
+
+/**
+ * Currently:
+ * - The order that these are listed in the transaction is critical:
+ * - Suppresses events.
+ * - Restores selection range.
+ *
+ * Future:
+ * - Restore document/overflow scroll positions that were unintentionally
+ *   modified via DOM insertions above the top viewport boundary.
+ * - Implement/integrate with customized constraint based layout system and keep
+ *   track of which dimensions must be remeasured.
+ *
+ * @class ReactIOSReconcileTransaction
+ */
+function ReactIOSReconcileTransaction() {
+  this.reinitializeTransaction();
+  this.reactMountReady = CallbackQueue.getPooled(null);
+}
+
+var Mixin = {
+  /**
+   * @see Transaction
+   * @abstract
+   * @final
+   * @return {array<object>} List of operation wrap proceedures.
+   *   TODO: convert to array<TransactionWrapper>
+   */
+  getTransactionWrappers: function() {
+    return TRANSACTION_WRAPPERS;
+  },
+
+  /**
+   * @return {object} The queue to collect `onDOMReady` callbacks with.
+   *   TODO: convert to ReactMountReady
+   */
+  getReactMountReady: function() {
+    return this.reactMountReady;
+  },
+
+  /**
+   * `PooledClass` looks for this, and will invoke this before allowing this
+   * instance to be resused.
+   */
+  destructor: function() {
+    CallbackQueue.release(this.reactMountReady);
+    this.reactMountReady = null;
+  }
+};
+
+Object.assign(
+  ReactIOSReconcileTransaction.prototype,
+  Transaction.Mixin,
+  ReactIOSReconcileTransaction,
+  Mixin
+);
+
+PooledClass.addPoolingTo(ReactIOSReconcileTransaction);
+
+module.exports = ReactIOSReconcileTransaction;