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| import React from 'react';
import PropTypes from 'prop-types';
import { List } from 'immutable';
import Promise from 'bluebird';
import superagent from 'superagent';
import TagContainer from './TagContainer';
export default class TagInput extends React.Component {
constructor(props) {
super(props);
this.state = {
waiting: false,
data: props.options
};
this.handleSelectItem = this.handleSelectItem.bind(this);
this.handleDeselectItem = this.handleDeselectItem.bind(this);
this.handleFetchOptions = this.handleFetchOptions.bind(this);
}
componentWillReceiveProps(nextProps) {
this.setState({
data: nextProps.options
});
}
/**
* Selects an item
* pass it to parent (If any)
*
* @param {any} item
* @memberof TagInput
*/
handleSelectItem(item) {
let { value } = this.props;
Iif (!this.props.multiple && !value.size == 0) {
// clear existing selection and send the tags to parent
this.props.onChange(new List().push(item));
} else {
value = this.props.invert ? value.unshift(item) : value = value.push(item);
// Sending the tags to parent
this.props.onChange(value);
}
}
/**
* Deselects an item
* pass it to parent (If any)
*
* @param {any} item
* @memberof TagInput
*/
handleDeselectItem(item) {
let { value, selectItemBy } = this.props;
Eif (typeof selectItemBy === 'undefined') {
selectItemBy = item.key ? 'key' : 'id';
}
const index = this.props.value.findIndex(selectedItem => item[selectItemBy] === selectedItem[selectItemBy]);
if (index > -1) {
value = value.splice(index, 1);
}
// Sending the tags to parent
this.props.onChange(value);
}
fetchOptions(query) {
this.setState({
waiting: true
});
// do a user-provided fetch
Eif (typeof this.props.fetchOptions === 'function') {
return this.props.fetchOptions(query);
}
// do a fetch with user-provided url + headers
const { fetchUrl, httpHeaders } = this.props;
return new Promise((resolve, reject) => {
let req = superagent.get(fetchUrl);
// Setting the http headers
Object.keys(httpHeaders).forEach((key) => {
req.set(key, httpHeaders[key]);
});
req
.accept('application/json')
.query({ query: query })
.end((err, res) => {
if (err) {
reject(err);
}
resolve(res.body);
});
});
}
handleFetchOptions(query = '', dropdownOpen = false) {
if (dropdownOpen || this.state.data.some(field => field.label === query)) {
return;
}
this.fetchOptions(query)
.then((res) => {
this.setState({
data: this.props.extractor(res)
});
})
.catch((err) => {
console.error(err);
})
.finally(() => {
this.setState({
waiting: false
});
});
}
render() {
const {
data,
waiting
} = this.state;
return (
<TagContainer
{...this.props}
options={data}
loading={waiting}
selection={this.props.value}
onSelect={this.handleSelectItem}
onDeselect={this.handleDeselectItem}
onFetchOptions={this.handleFetchOptions}
/>
);
}
}
// default props
TagInput.defaultProps = {
loading: false,
multiple: true,
filterable: true,
darkTheme: false,
invert: false,
className: '',
orderOptionsBy: 'title',
label: 'Select Tags...',
togglePosition: 'left',
noOptionsMessage: '',
toggleSwitchStyle: 'search',
selectItemBy: undefined,
fetchUrl: '',
fetchOptions: void 0,
optionGroupTitles: [],
options: [],
httpHeaders: {},
value: new List(),
onFetchOptions: void 0,
extractor: data => data
};
// prop types checking
TagInput.propTypes = {
loading: PropTypes.bool,
multiple: PropTypes.bool,
filterable: PropTypes.bool,
darkTheme: PropTypes.bool,
className: PropTypes.string,
orderOptionsBy: PropTypes.string,
label: PropTypes.string,
togglePosition: PropTypes.oneOf(['right', 'left']),
noOptionsMessage: PropTypes.string,
toggleSwitchStyle: PropTypes.string,
selectItemBy: PropTypes.string,
fetchUrl: PropTypes.string,
fetchOptions: PropTypes.func,
invert: PropTypes.bool,
options: PropTypes.array,
optionGroupTitles: PropTypes.array,
httpHeaders: PropTypes.object,
value: PropTypes.instanceOf(List).isRequired,
onChange: PropTypes.func.isRequired,
onFetchOptions: PropTypes.func,
extractor: PropTypes.func
};
|