wallet-core/node_modules/react-dom/lib/ReactDOMComponent.js
2017-05-03 15:35:00 +02:00

1000 lines
38 KiB
JavaScript

/**
* 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.
*
*/
/* global hasOwnProperty:true */
'use strict';
var _prodInvariant = require('./reactProdInvariant'),
_assign = require('object-assign');
var AutoFocusUtils = require('./AutoFocusUtils');
var CSSPropertyOperations = require('./CSSPropertyOperations');
var DOMLazyTree = require('./DOMLazyTree');
var DOMNamespaces = require('./DOMNamespaces');
var DOMProperty = require('./DOMProperty');
var DOMPropertyOperations = require('./DOMPropertyOperations');
var EventPluginHub = require('./EventPluginHub');
var EventPluginRegistry = require('./EventPluginRegistry');
var ReactBrowserEventEmitter = require('./ReactBrowserEventEmitter');
var ReactDOMComponentFlags = require('./ReactDOMComponentFlags');
var ReactDOMComponentTree = require('./ReactDOMComponentTree');
var ReactDOMInput = require('./ReactDOMInput');
var ReactDOMOption = require('./ReactDOMOption');
var ReactDOMSelect = require('./ReactDOMSelect');
var ReactDOMTextarea = require('./ReactDOMTextarea');
var ReactInstrumentation = require('./ReactInstrumentation');
var ReactMultiChild = require('./ReactMultiChild');
var ReactServerRenderingTransaction = require('./ReactServerRenderingTransaction');
var emptyFunction = require('fbjs/lib/emptyFunction');
var escapeTextContentForBrowser = require('./escapeTextContentForBrowser');
var invariant = require('fbjs/lib/invariant');
var isEventSupported = require('./isEventSupported');
var shallowEqual = require('fbjs/lib/shallowEqual');
var validateDOMNesting = require('./validateDOMNesting');
var warning = require('fbjs/lib/warning');
var Flags = ReactDOMComponentFlags;
var deleteListener = EventPluginHub.deleteListener;
var getNode = ReactDOMComponentTree.getNodeFromInstance;
var listenTo = ReactBrowserEventEmitter.listenTo;
var registrationNameModules = EventPluginRegistry.registrationNameModules;
// For quickly matching children type, to test if can be treated as content.
var CONTENT_TYPES = { 'string': true, 'number': true };
var STYLE = 'style';
var HTML = '__html';
var RESERVED_PROPS = {
children: null,
dangerouslySetInnerHTML: null,
suppressContentEditableWarning: null
};
// Node type for document fragments (Node.DOCUMENT_FRAGMENT_NODE).
var DOC_FRAGMENT_TYPE = 11;
function getDeclarationErrorAddendum(internalInstance) {
if (internalInstance) {
var owner = internalInstance._currentElement._owner || null;
if (owner) {
var name = owner.getName();
if (name) {
return ' This DOM node was rendered by `' + name + '`.';
}
}
}
return '';
}
function friendlyStringify(obj) {
if (typeof obj === 'object') {
if (Array.isArray(obj)) {
return '[' + obj.map(friendlyStringify).join(', ') + ']';
} else {
var pairs = [];
for (var key in obj) {
if (Object.prototype.hasOwnProperty.call(obj, key)) {
var keyEscaped = /^[a-z$_][\w$_]*$/i.test(key) ? key : JSON.stringify(key);
pairs.push(keyEscaped + ': ' + friendlyStringify(obj[key]));
}
}
return '{' + pairs.join(', ') + '}';
}
} else if (typeof obj === 'string') {
return JSON.stringify(obj);
} else if (typeof obj === 'function') {
return '[function object]';
}
// Differs from JSON.stringify in that undefined because undefined and that
// inf and nan don't become null
return String(obj);
}
var styleMutationWarning = {};
function checkAndWarnForMutatedStyle(style1, style2, component) {
if (style1 == null || style2 == null) {
return;
}
if (shallowEqual(style1, style2)) {
return;
}
var componentName = component._tag;
var owner = component._currentElement._owner;
var ownerName;
if (owner) {
ownerName = owner.getName();
}
var hash = ownerName + '|' + componentName;
if (styleMutationWarning.hasOwnProperty(hash)) {
return;
}
styleMutationWarning[hash] = true;
process.env.NODE_ENV !== 'production' ? warning(false, '`%s` was passed a style object that has previously been mutated. ' + 'Mutating `style` is deprecated. Consider cloning it beforehand. Check ' + 'the `render` %s. Previous style: %s. Mutated style: %s.', componentName, owner ? 'of `' + ownerName + '`' : 'using <' + componentName + '>', friendlyStringify(style1), friendlyStringify(style2)) : void 0;
}
/**
* @param {object} component
* @param {?object} props
*/
function assertValidProps(component, props) {
if (!props) {
return;
}
// Note the use of `==` which checks for null or undefined.
if (voidElementTags[component._tag]) {
!(props.children == null && props.dangerouslySetInnerHTML == null) ? process.env.NODE_ENV !== 'production' ? invariant(false, '%s is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`.%s', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : _prodInvariant('137', component._tag, component._currentElement._owner ? ' Check the render method of ' + component._currentElement._owner.getName() + '.' : '') : void 0;
}
if (props.dangerouslySetInnerHTML != null) {
!(props.children == null) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Can only set one of `children` or `props.dangerouslySetInnerHTML`.') : _prodInvariant('60') : void 0;
!(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML) ? process.env.NODE_ENV !== 'production' ? invariant(false, '`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information.') : _prodInvariant('61') : void 0;
}
if (process.env.NODE_ENV !== 'production') {
process.env.NODE_ENV !== 'production' ? warning(props.innerHTML == null, 'Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.') : void 0;
process.env.NODE_ENV !== 'production' ? warning(props.suppressContentEditableWarning || !props.contentEditable || props.children == null, 'A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.') : void 0;
process.env.NODE_ENV !== 'production' ? warning(props.onFocusIn == null && props.onFocusOut == null, 'React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.') : void 0;
}
!(props.style == null || typeof props.style === 'object') ? process.env.NODE_ENV !== 'production' ? invariant(false, 'The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + \'em\'}} when using JSX.%s', getDeclarationErrorAddendum(component)) : _prodInvariant('62', getDeclarationErrorAddendum(component)) : void 0;
}
function enqueuePutListener(inst, registrationName, listener, transaction) {
if (transaction instanceof ReactServerRenderingTransaction) {
return;
}
if (process.env.NODE_ENV !== 'production') {
// IE8 has no API for event capturing and the `onScroll` event doesn't
// bubble.
process.env.NODE_ENV !== 'production' ? warning(registrationName !== 'onScroll' || isEventSupported('scroll', true), 'This browser doesn\'t support the `onScroll` event') : void 0;
}
var containerInfo = inst._hostContainerInfo;
var isDocumentFragment = containerInfo._node && containerInfo._node.nodeType === DOC_FRAGMENT_TYPE;
var doc = isDocumentFragment ? containerInfo._node : containerInfo._ownerDocument;
listenTo(registrationName, doc);
transaction.getReactMountReady().enqueue(putListener, {
inst: inst,
registrationName: registrationName,
listener: listener
});
}
function putListener() {
var listenerToPut = this;
EventPluginHub.putListener(listenerToPut.inst, listenerToPut.registrationName, listenerToPut.listener);
}
function inputPostMount() {
var inst = this;
ReactDOMInput.postMountWrapper(inst);
}
function textareaPostMount() {
var inst = this;
ReactDOMTextarea.postMountWrapper(inst);
}
function optionPostMount() {
var inst = this;
ReactDOMOption.postMountWrapper(inst);
}
var setAndValidateContentChildDev = emptyFunction;
if (process.env.NODE_ENV !== 'production') {
setAndValidateContentChildDev = function (content) {
var hasExistingContent = this._contentDebugID != null;
var debugID = this._debugID;
// This ID represents the inlined child that has no backing instance:
var contentDebugID = -debugID;
if (content == null) {
if (hasExistingContent) {
ReactInstrumentation.debugTool.onUnmountComponent(this._contentDebugID);
}
this._contentDebugID = null;
return;
}
validateDOMNesting(null, String(content), this, this._ancestorInfo);
this._contentDebugID = contentDebugID;
if (hasExistingContent) {
ReactInstrumentation.debugTool.onBeforeUpdateComponent(contentDebugID, content);
ReactInstrumentation.debugTool.onUpdateComponent(contentDebugID);
} else {
ReactInstrumentation.debugTool.onBeforeMountComponent(contentDebugID, content, debugID);
ReactInstrumentation.debugTool.onMountComponent(contentDebugID);
ReactInstrumentation.debugTool.onSetChildren(debugID, [contentDebugID]);
}
};
}
// There are so many media events, it makes sense to just
// maintain a list rather than create a `trapBubbledEvent` for each
var mediaEvents = {
topAbort: 'abort',
topCanPlay: 'canplay',
topCanPlayThrough: 'canplaythrough',
topDurationChange: 'durationchange',
topEmptied: 'emptied',
topEncrypted: 'encrypted',
topEnded: 'ended',
topError: 'error',
topLoadedData: 'loadeddata',
topLoadedMetadata: 'loadedmetadata',
topLoadStart: 'loadstart',
topPause: 'pause',
topPlay: 'play',
topPlaying: 'playing',
topProgress: 'progress',
topRateChange: 'ratechange',
topSeeked: 'seeked',
topSeeking: 'seeking',
topStalled: 'stalled',
topSuspend: 'suspend',
topTimeUpdate: 'timeupdate',
topVolumeChange: 'volumechange',
topWaiting: 'waiting'
};
function trapBubbledEventsLocal() {
var inst = this;
// If a component renders to null or if another component fatals and causes
// the state of the tree to be corrupted, `node` here can be null.
!inst._rootNodeID ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Must be mounted to trap events') : _prodInvariant('63') : void 0;
var node = getNode(inst);
!node ? process.env.NODE_ENV !== 'production' ? invariant(false, 'trapBubbledEvent(...): Requires node to be rendered.') : _prodInvariant('64') : void 0;
switch (inst._tag) {
case 'iframe':
case 'object':
inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];
break;
case 'video':
case 'audio':
inst._wrapperState.listeners = [];
// Create listener for each media event
for (var event in mediaEvents) {
if (mediaEvents.hasOwnProperty(event)) {
inst._wrapperState.listeners.push(ReactBrowserEventEmitter.trapBubbledEvent(event, mediaEvents[event], node));
}
}
break;
case 'source':
inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node)];
break;
case 'img':
inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topError', 'error', node), ReactBrowserEventEmitter.trapBubbledEvent('topLoad', 'load', node)];
break;
case 'form':
inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topReset', 'reset', node), ReactBrowserEventEmitter.trapBubbledEvent('topSubmit', 'submit', node)];
break;
case 'input':
case 'select':
case 'textarea':
inst._wrapperState.listeners = [ReactBrowserEventEmitter.trapBubbledEvent('topInvalid', 'invalid', node)];
break;
}
}
function postUpdateSelectWrapper() {
ReactDOMSelect.postUpdateWrapper(this);
}
// For HTML, certain tags should omit their close tag. We keep a whitelist for
// those special-case tags.
var omittedCloseTags = {
'area': true,
'base': true,
'br': true,
'col': true,
'embed': true,
'hr': true,
'img': true,
'input': true,
'keygen': true,
'link': true,
'meta': true,
'param': true,
'source': true,
'track': true,
'wbr': true
};
var newlineEatingTags = {
'listing': true,
'pre': true,
'textarea': true
};
// For HTML, certain tags cannot have children. This has the same purpose as
// `omittedCloseTags` except that `menuitem` should still have its closing tag.
var voidElementTags = _assign({
'menuitem': true
}, omittedCloseTags);
// We accept any tag to be rendered but since this gets injected into arbitrary
// HTML, we want to make sure that it's a safe tag.
// http://www.w3.org/TR/REC-xml/#NT-Name
var VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\.\-\d]*$/; // Simplified subset
var validatedTagCache = {};
var hasOwnProperty = {}.hasOwnProperty;
function validateDangerousTag(tag) {
if (!hasOwnProperty.call(validatedTagCache, tag)) {
!VALID_TAG_REGEX.test(tag) ? process.env.NODE_ENV !== 'production' ? invariant(false, 'Invalid tag: %s', tag) : _prodInvariant('65', tag) : void 0;
validatedTagCache[tag] = true;
}
}
function isCustomComponent(tagName, props) {
return tagName.indexOf('-') >= 0 || props.is != null;
}
var globalIdCounter = 1;
/**
* Creates a new React class that is idempotent and capable of containing other
* React components. It accepts event listeners and DOM properties that are
* valid according to `DOMProperty`.
*
* - Event listeners: `onClick`, `onMouseDown`, etc.
* - DOM properties: `className`, `name`, `title`, etc.
*
* The `style` property functions differently from the DOM API. It accepts an
* object mapping of style properties to values.
*
* @constructor ReactDOMComponent
* @extends ReactMultiChild
*/
function ReactDOMComponent(element) {
var tag = element.type;
validateDangerousTag(tag);
this._currentElement = element;
this._tag = tag.toLowerCase();
this._namespaceURI = null;
this._renderedChildren = null;
this._previousStyle = null;
this._previousStyleCopy = null;
this._hostNode = null;
this._hostParent = null;
this._rootNodeID = 0;
this._domID = 0;
this._hostContainerInfo = null;
this._wrapperState = null;
this._topLevelWrapper = null;
this._flags = 0;
if (process.env.NODE_ENV !== 'production') {
this._ancestorInfo = null;
setAndValidateContentChildDev.call(this, null);
}
}
ReactDOMComponent.displayName = 'ReactDOMComponent';
ReactDOMComponent.Mixin = {
/**
* Generates root tag markup then recurses. This method has side effects and
* is not idempotent.
*
* @internal
* @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
* @param {?ReactDOMComponent} the parent component instance
* @param {?object} info about the host container
* @param {object} context
* @return {string} The computed markup.
*/
mountComponent: function (transaction, hostParent, hostContainerInfo, context) {
this._rootNodeID = globalIdCounter++;
this._domID = hostContainerInfo._idCounter++;
this._hostParent = hostParent;
this._hostContainerInfo = hostContainerInfo;
var props = this._currentElement.props;
switch (this._tag) {
case 'audio':
case 'form':
case 'iframe':
case 'img':
case 'link':
case 'object':
case 'source':
case 'video':
this._wrapperState = {
listeners: null
};
transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);
break;
case 'input':
ReactDOMInput.mountWrapper(this, props, hostParent);
props = ReactDOMInput.getHostProps(this, props);
transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);
break;
case 'option':
ReactDOMOption.mountWrapper(this, props, hostParent);
props = ReactDOMOption.getHostProps(this, props);
break;
case 'select':
ReactDOMSelect.mountWrapper(this, props, hostParent);
props = ReactDOMSelect.getHostProps(this, props);
transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);
break;
case 'textarea':
ReactDOMTextarea.mountWrapper(this, props, hostParent);
props = ReactDOMTextarea.getHostProps(this, props);
transaction.getReactMountReady().enqueue(trapBubbledEventsLocal, this);
break;
}
assertValidProps(this, props);
// We create tags in the namespace of their parent container, except HTML
// tags get no namespace.
var namespaceURI;
var parentTag;
if (hostParent != null) {
namespaceURI = hostParent._namespaceURI;
parentTag = hostParent._tag;
} else if (hostContainerInfo._tag) {
namespaceURI = hostContainerInfo._namespaceURI;
parentTag = hostContainerInfo._tag;
}
if (namespaceURI == null || namespaceURI === DOMNamespaces.svg && parentTag === 'foreignobject') {
namespaceURI = DOMNamespaces.html;
}
if (namespaceURI === DOMNamespaces.html) {
if (this._tag === 'svg') {
namespaceURI = DOMNamespaces.svg;
} else if (this._tag === 'math') {
namespaceURI = DOMNamespaces.mathml;
}
}
this._namespaceURI = namespaceURI;
if (process.env.NODE_ENV !== 'production') {
var parentInfo;
if (hostParent != null) {
parentInfo = hostParent._ancestorInfo;
} else if (hostContainerInfo._tag) {
parentInfo = hostContainerInfo._ancestorInfo;
}
if (parentInfo) {
// parentInfo should always be present except for the top-level
// component when server rendering
validateDOMNesting(this._tag, null, this, parentInfo);
}
this._ancestorInfo = validateDOMNesting.updatedAncestorInfo(parentInfo, this._tag, this);
}
var mountImage;
if (transaction.useCreateElement) {
var ownerDocument = hostContainerInfo._ownerDocument;
var el;
if (namespaceURI === DOMNamespaces.html) {
if (this._tag === 'script') {
// Create the script via .innerHTML so its "parser-inserted" flag is
// set to true and it does not execute
var div = ownerDocument.createElement('div');
var type = this._currentElement.type;
div.innerHTML = '<' + type + '></' + type + '>';
el = div.removeChild(div.firstChild);
} else if (props.is) {
el = ownerDocument.createElement(this._currentElement.type, props.is);
} else {
// Separate else branch instead of using `props.is || undefined` above becuase of a Firefox bug.
// See discussion in https://github.com/facebook/react/pull/6896
// and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240
el = ownerDocument.createElement(this._currentElement.type);
}
} else {
el = ownerDocument.createElementNS(namespaceURI, this._currentElement.type);
}
ReactDOMComponentTree.precacheNode(this, el);
this._flags |= Flags.hasCachedChildNodes;
if (!this._hostParent) {
DOMPropertyOperations.setAttributeForRoot(el);
}
this._updateDOMProperties(null, props, transaction);
var lazyTree = DOMLazyTree(el);
this._createInitialChildren(transaction, props, context, lazyTree);
mountImage = lazyTree;
} else {
var tagOpen = this._createOpenTagMarkupAndPutListeners(transaction, props);
var tagContent = this._createContentMarkup(transaction, props, context);
if (!tagContent && omittedCloseTags[this._tag]) {
mountImage = tagOpen + '/>';
} else {
mountImage = tagOpen + '>' + tagContent + '</' + this._currentElement.type + '>';
}
}
switch (this._tag) {
case 'input':
transaction.getReactMountReady().enqueue(inputPostMount, this);
if (props.autoFocus) {
transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);
}
break;
case 'textarea':
transaction.getReactMountReady().enqueue(textareaPostMount, this);
if (props.autoFocus) {
transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);
}
break;
case 'select':
if (props.autoFocus) {
transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);
}
break;
case 'button':
if (props.autoFocus) {
transaction.getReactMountReady().enqueue(AutoFocusUtils.focusDOMComponent, this);
}
break;
case 'option':
transaction.getReactMountReady().enqueue(optionPostMount, this);
break;
}
return mountImage;
},
/**
* Creates markup for the open tag and all attributes.
*
* This method has side effects because events get registered.
*
* Iterating over object properties is faster than iterating over arrays.
* @see http://jsperf.com/obj-vs-arr-iteration
*
* @private
* @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
* @param {object} props
* @return {string} Markup of opening tag.
*/
_createOpenTagMarkupAndPutListeners: function (transaction, props) {
var ret = '<' + this._currentElement.type;
for (var propKey in props) {
if (!props.hasOwnProperty(propKey)) {
continue;
}
var propValue = props[propKey];
if (propValue == null) {
continue;
}
if (registrationNameModules.hasOwnProperty(propKey)) {
if (propValue) {
enqueuePutListener(this, propKey, propValue, transaction);
}
} else {
if (propKey === STYLE) {
if (propValue) {
if (process.env.NODE_ENV !== 'production') {
// See `_updateDOMProperties`. style block
this._previousStyle = propValue;
}
propValue = this._previousStyleCopy = _assign({}, props.style);
}
propValue = CSSPropertyOperations.createMarkupForStyles(propValue, this);
}
var markup = null;
if (this._tag != null && isCustomComponent(this._tag, props)) {
if (!RESERVED_PROPS.hasOwnProperty(propKey)) {
markup = DOMPropertyOperations.createMarkupForCustomAttribute(propKey, propValue);
}
} else {
markup = DOMPropertyOperations.createMarkupForProperty(propKey, propValue);
}
if (markup) {
ret += ' ' + markup;
}
}
}
// For static pages, no need to put React ID and checksum. Saves lots of
// bytes.
if (transaction.renderToStaticMarkup) {
return ret;
}
if (!this._hostParent) {
ret += ' ' + DOMPropertyOperations.createMarkupForRoot();
}
ret += ' ' + DOMPropertyOperations.createMarkupForID(this._domID);
return ret;
},
/**
* Creates markup for the content between the tags.
*
* @private
* @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
* @param {object} props
* @param {object} context
* @return {string} Content markup.
*/
_createContentMarkup: function (transaction, props, context) {
var ret = '';
// Intentional use of != to avoid catching zero/false.
var innerHTML = props.dangerouslySetInnerHTML;
if (innerHTML != null) {
if (innerHTML.__html != null) {
ret = innerHTML.__html;
}
} else {
var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;
var childrenToUse = contentToUse != null ? null : props.children;
if (contentToUse != null) {
// TODO: Validate that text is allowed as a child of this node
ret = escapeTextContentForBrowser(contentToUse);
if (process.env.NODE_ENV !== 'production') {
setAndValidateContentChildDev.call(this, contentToUse);
}
} else if (childrenToUse != null) {
var mountImages = this.mountChildren(childrenToUse, transaction, context);
ret = mountImages.join('');
}
}
if (newlineEatingTags[this._tag] && ret.charAt(0) === '\n') {
// text/html ignores the first character in these tags if it's a newline
// Prefer to break application/xml over text/html (for now) by adding
// a newline specifically to get eaten by the parser. (Alternately for
// textareas, replacing "^\n" with "\r\n" doesn't get eaten, and the first
// \r is normalized out by HTMLTextAreaElement#value.)
// See: <http://www.w3.org/TR/html-polyglot/#newlines-in-textarea-and-pre>
// See: <http://www.w3.org/TR/html5/syntax.html#element-restrictions>
// See: <http://www.w3.org/TR/html5/syntax.html#newlines>
// See: Parsing of "textarea" "listing" and "pre" elements
// from <http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody>
return '\n' + ret;
} else {
return ret;
}
},
_createInitialChildren: function (transaction, props, context, lazyTree) {
// Intentional use of != to avoid catching zero/false.
var innerHTML = props.dangerouslySetInnerHTML;
if (innerHTML != null) {
if (innerHTML.__html != null) {
DOMLazyTree.queueHTML(lazyTree, innerHTML.__html);
}
} else {
var contentToUse = CONTENT_TYPES[typeof props.children] ? props.children : null;
var childrenToUse = contentToUse != null ? null : props.children;
// TODO: Validate that text is allowed as a child of this node
if (contentToUse != null) {
// Avoid setting textContent when the text is empty. In IE11 setting
// textContent on a text area will cause the placeholder to not
// show within the textarea until it has been focused and blurred again.
// https://github.com/facebook/react/issues/6731#issuecomment-254874553
if (contentToUse !== '') {
if (process.env.NODE_ENV !== 'production') {
setAndValidateContentChildDev.call(this, contentToUse);
}
DOMLazyTree.queueText(lazyTree, contentToUse);
}
} else if (childrenToUse != null) {
var mountImages = this.mountChildren(childrenToUse, transaction, context);
for (var i = 0; i < mountImages.length; i++) {
DOMLazyTree.queueChild(lazyTree, mountImages[i]);
}
}
}
},
/**
* Receives a next element and updates the component.
*
* @internal
* @param {ReactElement} nextElement
* @param {ReactReconcileTransaction|ReactServerRenderingTransaction} transaction
* @param {object} context
*/
receiveComponent: function (nextElement, transaction, context) {
var prevElement = this._currentElement;
this._currentElement = nextElement;
this.updateComponent(transaction, prevElement, nextElement, context);
},
/**
* Updates a DOM component after it has already been allocated and
* attached to the DOM. Reconciles the root DOM node, then recurses.
*
* @param {ReactReconcileTransaction} transaction
* @param {ReactElement} prevElement
* @param {ReactElement} nextElement
* @internal
* @overridable
*/
updateComponent: function (transaction, prevElement, nextElement, context) {
var lastProps = prevElement.props;
var nextProps = this._currentElement.props;
switch (this._tag) {
case 'input':
lastProps = ReactDOMInput.getHostProps(this, lastProps);
nextProps = ReactDOMInput.getHostProps(this, nextProps);
break;
case 'option':
lastProps = ReactDOMOption.getHostProps(this, lastProps);
nextProps = ReactDOMOption.getHostProps(this, nextProps);
break;
case 'select':
lastProps = ReactDOMSelect.getHostProps(this, lastProps);
nextProps = ReactDOMSelect.getHostProps(this, nextProps);
break;
case 'textarea':
lastProps = ReactDOMTextarea.getHostProps(this, lastProps);
nextProps = ReactDOMTextarea.getHostProps(this, nextProps);
break;
}
assertValidProps(this, nextProps);
this._updateDOMProperties(lastProps, nextProps, transaction);
this._updateDOMChildren(lastProps, nextProps, transaction, context);
switch (this._tag) {
case 'input':
// Update the wrapper around inputs *after* updating props. This has to
// happen after `_updateDOMProperties`. Otherwise HTML5 input validations
// raise warnings and prevent the new value from being assigned.
ReactDOMInput.updateWrapper(this);
break;
case 'textarea':
ReactDOMTextarea.updateWrapper(this);
break;
case 'select':
// <select> value update needs to occur after <option> children
// reconciliation
transaction.getReactMountReady().enqueue(postUpdateSelectWrapper, this);
break;
}
},
/**
* Reconciles the properties by detecting differences in property values and
* updating the DOM as necessary. This function is probably the single most
* critical path for performance optimization.
*
* TODO: Benchmark whether checking for changed values in memory actually
* improves performance (especially statically positioned elements).
* TODO: Benchmark the effects of putting this at the top since 99% of props
* do not change for a given reconciliation.
* TODO: Benchmark areas that can be improved with caching.
*
* @private
* @param {object} lastProps
* @param {object} nextProps
* @param {?DOMElement} node
*/
_updateDOMProperties: function (lastProps, nextProps, transaction) {
var propKey;
var styleName;
var styleUpdates;
for (propKey in lastProps) {
if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {
continue;
}
if (propKey === STYLE) {
var lastStyle = this._previousStyleCopy;
for (styleName in lastStyle) {
if (lastStyle.hasOwnProperty(styleName)) {
styleUpdates = styleUpdates || {};
styleUpdates[styleName] = '';
}
}
this._previousStyleCopy = null;
} else if (registrationNameModules.hasOwnProperty(propKey)) {
if (lastProps[propKey]) {
// Only call deleteListener if there was a listener previously or
// else willDeleteListener gets called when there wasn't actually a
// listener (e.g., onClick={null})
deleteListener(this, propKey);
}
} else if (isCustomComponent(this._tag, lastProps)) {
if (!RESERVED_PROPS.hasOwnProperty(propKey)) {
DOMPropertyOperations.deleteValueForAttribute(getNode(this), propKey);
}
} else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {
DOMPropertyOperations.deleteValueForProperty(getNode(this), propKey);
}
}
for (propKey in nextProps) {
var nextProp = nextProps[propKey];
var lastProp = propKey === STYLE ? this._previousStyleCopy : lastProps != null ? lastProps[propKey] : undefined;
if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {
continue;
}
if (propKey === STYLE) {
if (nextProp) {
if (process.env.NODE_ENV !== 'production') {
checkAndWarnForMutatedStyle(this._previousStyleCopy, this._previousStyle, this);
this._previousStyle = nextProp;
}
nextProp = this._previousStyleCopy = _assign({}, nextProp);
} else {
this._previousStyleCopy = null;
}
if (lastProp) {
// Unset styles on `lastProp` but not on `nextProp`.
for (styleName in lastProp) {
if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {
styleUpdates = styleUpdates || {};
styleUpdates[styleName] = '';
}
}
// Update styles that changed since `lastProp`.
for (styleName in nextProp) {
if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {
styleUpdates = styleUpdates || {};
styleUpdates[styleName] = nextProp[styleName];
}
}
} else {
// Relies on `updateStylesByID` not mutating `styleUpdates`.
styleUpdates = nextProp;
}
} else if (registrationNameModules.hasOwnProperty(propKey)) {
if (nextProp) {
enqueuePutListener(this, propKey, nextProp, transaction);
} else if (lastProp) {
deleteListener(this, propKey);
}
} else if (isCustomComponent(this._tag, nextProps)) {
if (!RESERVED_PROPS.hasOwnProperty(propKey)) {
DOMPropertyOperations.setValueForAttribute(getNode(this), propKey, nextProp);
}
} else if (DOMProperty.properties[propKey] || DOMProperty.isCustomAttribute(propKey)) {
var node = getNode(this);
// If we're updating to null or undefined, we should remove the property
// from the DOM node instead of inadvertently setting to a string. This
// brings us in line with the same behavior we have on initial render.
if (nextProp != null) {
DOMPropertyOperations.setValueForProperty(node, propKey, nextProp);
} else {
DOMPropertyOperations.deleteValueForProperty(node, propKey);
}
}
}
if (styleUpdates) {
CSSPropertyOperations.setValueForStyles(getNode(this), styleUpdates, this);
}
},
/**
* Reconciles the children with the various properties that affect the
* children content.
*
* @param {object} lastProps
* @param {object} nextProps
* @param {ReactReconcileTransaction} transaction
* @param {object} context
*/
_updateDOMChildren: function (lastProps, nextProps, transaction, context) {
var lastContent = CONTENT_TYPES[typeof lastProps.children] ? lastProps.children : null;
var nextContent = CONTENT_TYPES[typeof nextProps.children] ? nextProps.children : null;
var lastHtml = lastProps.dangerouslySetInnerHTML && lastProps.dangerouslySetInnerHTML.__html;
var nextHtml = nextProps.dangerouslySetInnerHTML && nextProps.dangerouslySetInnerHTML.__html;
// Note the use of `!=` which checks for null or undefined.
var lastChildren = lastContent != null ? null : lastProps.children;
var nextChildren = nextContent != null ? null : nextProps.children;
// If we're switching from children to content/html or vice versa, remove
// the old content
var lastHasContentOrHtml = lastContent != null || lastHtml != null;
var nextHasContentOrHtml = nextContent != null || nextHtml != null;
if (lastChildren != null && nextChildren == null) {
this.updateChildren(null, transaction, context);
} else if (lastHasContentOrHtml && !nextHasContentOrHtml) {
this.updateTextContent('');
if (process.env.NODE_ENV !== 'production') {
ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);
}
}
if (nextContent != null) {
if (lastContent !== nextContent) {
this.updateTextContent('' + nextContent);
if (process.env.NODE_ENV !== 'production') {
setAndValidateContentChildDev.call(this, nextContent);
}
}
} else if (nextHtml != null) {
if (lastHtml !== nextHtml) {
this.updateMarkup('' + nextHtml);
}
if (process.env.NODE_ENV !== 'production') {
ReactInstrumentation.debugTool.onSetChildren(this._debugID, []);
}
} else if (nextChildren != null) {
if (process.env.NODE_ENV !== 'production') {
setAndValidateContentChildDev.call(this, null);
}
this.updateChildren(nextChildren, transaction, context);
}
},
getHostNode: function () {
return getNode(this);
},
/**
* Destroys all event registrations for this instance. Does not remove from
* the DOM. That must be done by the parent.
*
* @internal
*/
unmountComponent: function (safely) {
switch (this._tag) {
case 'audio':
case 'form':
case 'iframe':
case 'img':
case 'link':
case 'object':
case 'source':
case 'video':
var listeners = this._wrapperState.listeners;
if (listeners) {
for (var i = 0; i < listeners.length; i++) {
listeners[i].remove();
}
}
break;
case 'html':
case 'head':
case 'body':
/**
* Components like <html> <head> and <body> can't be removed or added
* easily in a cross-browser way, however it's valuable to be able to
* take advantage of React's reconciliation for styling and <title>
* management. So we just document it and throw in dangerous cases.
*/
!false ? process.env.NODE_ENV !== 'production' ? invariant(false, '<%s> tried to unmount. Because of cross-browser quirks it is impossible to unmount some top-level components (eg <html>, <head>, and <body>) reliably and efficiently. To fix this, have a single top-level component that never unmounts render these elements.', this._tag) : _prodInvariant('66', this._tag) : void 0;
break;
}
this.unmountChildren(safely);
ReactDOMComponentTree.uncacheNode(this);
EventPluginHub.deleteAllListeners(this);
this._rootNodeID = 0;
this._domID = 0;
this._wrapperState = null;
if (process.env.NODE_ENV !== 'production') {
setAndValidateContentChildDev.call(this, null);
}
},
getPublicInstance: function () {
return getNode(this);
}
};
_assign(ReactDOMComponent.prototype, ReactDOMComponent.Mixin, ReactMultiChild.Mixin);
module.exports = ReactDOMComponent;