From de98e0b232509d5f40c135d540a70e415272ff85 Mon Sep 17 00:00:00 2001 From: Florian Dold Date: Wed, 3 May 2017 15:35:00 +0200 Subject: node_modules --- node_modules/react-dom/lib/ReactReconciler.js | 167 ++++++++++++++++++++++++++ 1 file changed, 167 insertions(+) create mode 100644 node_modules/react-dom/lib/ReactReconciler.js (limited to 'node_modules/react-dom/lib/ReactReconciler.js') diff --git a/node_modules/react-dom/lib/ReactReconciler.js b/node_modules/react-dom/lib/ReactReconciler.js new file mode 100644 index 000000000..7b3cdfdc4 --- /dev/null +++ b/node_modules/react-dom/lib/ReactReconciler.js @@ -0,0 +1,167 @@ +/** + * Copyright 2013-present, Facebook, Inc. + * All rights reserved. + * + * This source code is licensed under the BSD-style license found in the + * LICENSE file in the root directory of this source tree. An additional grant + * of patent rights can be found in the PATENTS file in the same directory. + * + */ + +'use strict'; + +var ReactRef = require('./ReactRef'); +var ReactInstrumentation = require('./ReactInstrumentation'); + +var warning = require('fbjs/lib/warning'); + +/** + * Helper to call ReactRef.attachRefs with this composite component, split out + * to avoid allocations in the transaction mount-ready queue. + */ +function attachRefs() { + ReactRef.attachRefs(this, this._currentElement); +} + +var ReactReconciler = { + + /** + * Initializes the component, renders markup, and registers event listeners. + * + * @param {ReactComponent} internalInstance + * @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction + * @param {?object} the containing host component instance + * @param {?object} info about the host container + * @return {?string} Rendered markup to be inserted into the DOM. + * @final + * @internal + */ + mountComponent: function (internalInstance, transaction, hostParent, hostContainerInfo, context, parentDebugID // 0 in production and for roots + ) { + if (process.env.NODE_ENV !== 'production') { + if (internalInstance._debugID !== 0) { + ReactInstrumentation.debugTool.onBeforeMountComponent(internalInstance._debugID, internalInstance._currentElement, parentDebugID); + } + } + var markup = internalInstance.mountComponent(transaction, hostParent, hostContainerInfo, context, parentDebugID); + if (internalInstance._currentElement && internalInstance._currentElement.ref != null) { + transaction.getReactMountReady().enqueue(attachRefs, internalInstance); + } + if (process.env.NODE_ENV !== 'production') { + if (internalInstance._debugID !== 0) { + ReactInstrumentation.debugTool.onMountComponent(internalInstance._debugID); + } + } + return markup; + }, + + /** + * Returns a value that can be passed to + * ReactComponentEnvironment.replaceNodeWithMarkup. + */ + getHostNode: function (internalInstance) { + return internalInstance.getHostNode(); + }, + + /** + * Releases any resources allocated by `mountComponent`. + * + * @final + * @internal + */ + unmountComponent: function (internalInstance, safely) { + if (process.env.NODE_ENV !== 'production') { + if (internalInstance._debugID !== 0) { + ReactInstrumentation.debugTool.onBeforeUnmountComponent(internalInstance._debugID); + } + } + ReactRef.detachRefs(internalInstance, internalInstance._currentElement); + internalInstance.unmountComponent(safely); + if (process.env.NODE_ENV !== 'production') { + if (internalInstance._debugID !== 0) { + ReactInstrumentation.debugTool.onUnmountComponent(internalInstance._debugID); + } + } + }, + + /** + * Update a component using a new element. + * + * @param {ReactComponent} internalInstance + * @param {ReactElement} nextElement + * @param {ReactReconcileTransaction} transaction + * @param {object} context + * @internal + */ + receiveComponent: function (internalInstance, nextElement, transaction, context) { + var prevElement = internalInstance._currentElement; + + if (nextElement === prevElement && context === internalInstance._context) { + // Since elements are immutable after the owner is rendered, + // we can do a cheap identity compare here to determine if this is a + // superfluous reconcile. It's possible for state to be mutable but such + // change should trigger an update of the owner which would recreate + // the element. We explicitly check for the existence of an owner since + // it's possible for an element created outside a composite to be + // deeply mutated and reused. + + // TODO: Bailing out early is just a perf optimization right? + // TODO: Removing the return statement should affect correctness? + return; + } + + if (process.env.NODE_ENV !== 'production') { + if (internalInstance._debugID !== 0) { + ReactInstrumentation.debugTool.onBeforeUpdateComponent(internalInstance._debugID, nextElement); + } + } + + var refsChanged = ReactRef.shouldUpdateRefs(prevElement, nextElement); + + if (refsChanged) { + ReactRef.detachRefs(internalInstance, prevElement); + } + + internalInstance.receiveComponent(nextElement, transaction, context); + + if (refsChanged && internalInstance._currentElement && internalInstance._currentElement.ref != null) { + transaction.getReactMountReady().enqueue(attachRefs, internalInstance); + } + + if (process.env.NODE_ENV !== 'production') { + if (internalInstance._debugID !== 0) { + ReactInstrumentation.debugTool.onUpdateComponent(internalInstance._debugID); + } + } + }, + + /** + * Flush any dirty changes in a component. + * + * @param {ReactComponent} internalInstance + * @param {ReactReconcileTransaction} transaction + * @internal + */ + performUpdateIfNecessary: function (internalInstance, transaction, updateBatchNumber) { + if (internalInstance._updateBatchNumber !== updateBatchNumber) { + // The component's enqueued batch number should always be the current + // batch or the following one. + process.env.NODE_ENV !== 'production' ? warning(internalInstance._updateBatchNumber == null || internalInstance._updateBatchNumber === updateBatchNumber + 1, 'performUpdateIfNecessary: Unexpected batch number (current %s, ' + 'pending %s)', updateBatchNumber, internalInstance._updateBatchNumber) : void 0; + return; + } + if (process.env.NODE_ENV !== 'production') { + if (internalInstance._debugID !== 0) { + ReactInstrumentation.debugTool.onBeforeUpdateComponent(internalInstance._debugID, internalInstance._currentElement); + } + } + internalInstance.performUpdateIfNecessary(transaction); + if (process.env.NODE_ENV !== 'production') { + if (internalInstance._debugID !== 0) { + ReactInstrumentation.debugTool.onUpdateComponent(internalInstance._debugID); + } + } + } + +}; + +module.exports = ReactReconciler; \ No newline at end of file -- cgit v1.2.3