diff options
Diffstat (limited to 'node_modules/react-dom/lib/ReactDOMOption.js')
| -rw-r--r-- | node_modules/react-dom/lib/ReactDOMOption.js | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/node_modules/react-dom/lib/ReactDOMOption.js b/node_modules/react-dom/lib/ReactDOMOption.js new file mode 100644 index 000000000..4846e9d51 --- /dev/null +++ b/node_modules/react-dom/lib/ReactDOMOption.js @@ -0,0 +1,122 @@ +/** + * 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;
\ No newline at end of file |