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/**
* 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 _assign = require('object-assign');
var React = require('react/lib/React');
var ReactDOMComponentTree = require('./ReactDOMComponentTree');
var ReactDOMSelect = require('./ReactDOMSelect');
var warning = require('fbjs/lib/warning');
var didWarnInvalidOptionChildren = false;
function flattenChildren(children) {
var content = '';
// Flatten children and warn if they aren't strings or numbers;
// invalid types are ignored.
React.Children.forEach(children, function (child) {
if (child == null) {
return;
}
if (typeof child === 'string' || typeof child === 'number') {
content += child;
} else if (!didWarnInvalidOptionChildren) {
didWarnInvalidOptionChildren = true;
process.env.NODE_ENV !== 'production' ? warning(false, 'Only strings and numbers are supported as <option> children.') : void 0;
}
});
return content;
}
/**
* Implements an <option> host component that warns when `selected` is set.
*/
var ReactDOMOption = {
mountWrapper: function (inst, props, hostParent) {
// TODO (yungsters): Remove support for `selected` in <option>.
if (process.env.NODE_ENV !== 'production') {
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;
}
// Look up whether this option is 'selected'
var selectValue = null;
if (hostParent != null) {
var selectParent = hostParent;
if (selectParent._tag === 'optgroup') {
selectParent = selectParent._hostParent;
}
if (selectParent != null && selectParent._tag === 'select') {
selectValue = ReactDOMSelect.getSelectValueContext(selectParent);
}
}
// If the value is null (e.g., no specified value or after initial mount)
// or missing (e.g., for <datalist>), we don't change props.selected
var selected = null;
if (selectValue != null) {
var value;
if (props.value != null) {
value = props.value + '';
} else {
value = flattenChildren(props.children);
}
selected = false;
if (Array.isArray(selectValue)) {
// multiple
for (var i = 0; i < selectValue.length; i++) {
if ('' + selectValue[i] === value) {
selected = true;
break;
}
}
} else {
selected = '' + selectValue === value;
}
}
inst._wrapperState = { selected: selected };
},
postMountWrapper: function (inst) {
// value="" should make a value attribute (#6219)
var props = inst._currentElement.props;
if (props.value != null) {
var node = ReactDOMComponentTree.getNodeFromInstance(inst);
node.setAttribute('value', props.value);
}
},
getHostProps: function (inst, props) {
var hostProps = _assign({ selected: undefined, children: undefined }, props);
// Read state only from initial mount because <select> updates value
// manually; we need the initial state only for server rendering
if (inst._wrapperState.selected != null) {
hostProps.selected = inst._wrapperState.selected;
}
var content = flattenChildren(props.children);
if (content) {
hostProps.children = content;
}
return hostProps;
}
};
module.exports = ReactDOMOption;
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