121 lines
3.6 KiB
JavaScript
121 lines
3.6 KiB
JavaScript
/**
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* Copyright 2013-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*/
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'use strict';
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var _assign = require('object-assign');
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var React = require('react/lib/React');
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var ReactDOMComponentTree = require('./ReactDOMComponentTree');
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var ReactDOMSelect = require('./ReactDOMSelect');
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var warning = require('fbjs/lib/warning');
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var didWarnInvalidOptionChildren = false;
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function flattenChildren(children) {
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var content = '';
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// Flatten children and warn if they aren't strings or numbers;
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// invalid types are ignored.
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React.Children.forEach(children, function (child) {
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if (child == null) {
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return;
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}
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if (typeof child === 'string' || typeof child === 'number') {
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content += child;
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} else if (!didWarnInvalidOptionChildren) {
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didWarnInvalidOptionChildren = true;
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process.env.NODE_ENV !== 'production' ? warning(false, 'Only strings and numbers are supported as <option> children.') : void 0;
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}
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});
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return content;
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}
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/**
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* Implements an <option> host component that warns when `selected` is set.
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*/
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var ReactDOMOption = {
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mountWrapper: function (inst, props, hostParent) {
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// TODO (yungsters): Remove support for `selected` in <option>.
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if (process.env.NODE_ENV !== 'production') {
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process.env.NODE_ENV !== 'production' ? warning(props.selected == null, 'Use the `defaultValue` or `value` props on <select> instead of ' + 'setting `selected` on <option>.') : void 0;
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}
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// Look up whether this option is 'selected'
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var selectValue = null;
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if (hostParent != null) {
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var selectParent = hostParent;
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if (selectParent._tag === 'optgroup') {
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selectParent = selectParent._hostParent;
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}
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if (selectParent != null && selectParent._tag === 'select') {
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selectValue = ReactDOMSelect.getSelectValueContext(selectParent);
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}
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}
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// If the value is null (e.g., no specified value or after initial mount)
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// or missing (e.g., for <datalist>), we don't change props.selected
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var selected = null;
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if (selectValue != null) {
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var value;
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if (props.value != null) {
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value = props.value + '';
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} else {
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value = flattenChildren(props.children);
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}
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selected = false;
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if (Array.isArray(selectValue)) {
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// multiple
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for (var i = 0; i < selectValue.length; i++) {
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if ('' + selectValue[i] === value) {
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selected = true;
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break;
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}
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}
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} else {
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selected = '' + selectValue === value;
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}
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}
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inst._wrapperState = { selected: selected };
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},
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postMountWrapper: function (inst) {
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// value="" should make a value attribute (#6219)
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var props = inst._currentElement.props;
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if (props.value != null) {
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var node = ReactDOMComponentTree.getNodeFromInstance(inst);
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node.setAttribute('value', props.value);
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}
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},
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getHostProps: function (inst, props) {
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var hostProps = _assign({ selected: undefined, children: undefined }, props);
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// Read state only from initial mount because <select> updates value
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// manually; we need the initial state only for server rendering
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if (inst._wrapperState.selected != null) {
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hostProps.selected = inst._wrapperState.selected;
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}
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var content = flattenChildren(props.children);
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if (content) {
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hostProps.children = content;
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}
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return hostProps;
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}
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};
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module.exports = ReactDOMOption; |