cd241a4a17
This is needed for the IRC bridge to be able to do full membership list syncing without cluttering the message panel.
91 lines
2.7 KiB
JavaScript
91 lines
2.7 KiB
JavaScript
/*
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Copyright 2016 OpenMarket Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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var React = require('react');
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module.exports = React.createClass({
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displayName: 'TruncatedList',
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propTypes: {
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// The number of elements to show before truncating. If negative, no truncation is done.
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truncateAt: React.PropTypes.number,
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// The className to apply to the wrapping div
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className: React.PropTypes.string,
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// A function which will be invoked when an overflow element is required.
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// This will be inserted after the children.
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createOverflowElement: React.PropTypes.func
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},
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getInitialState: function() {
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return {
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enabled: true,
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};
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},
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getDefaultProps: function() {
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return {
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truncateAt: 2,
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createOverflowElement: function(overflowCount, totalCount, toggleTruncate, isExpanded) {
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return (
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<div>And {overflowCount} more...</div>
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);
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}
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};
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},
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toggleTruncate: function() {
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this.setState({
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enabled: !this.state.enabled
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});
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},
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render: function() {
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var childsJsx = this.props.children;
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var overflowJsx;
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var childArray = React.Children.toArray(this.props.children).filter((c) => {
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return c != null;
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});
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var childCount = childArray.length;
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if (this.state.enabled && this.props.truncateAt >= 0) {
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var overflowCount = childCount - this.props.truncateAt;
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if (overflowCount > 1) {
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overflowJsx = this.props.createOverflowElement(
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overflowCount, childCount, this.toggleTruncate
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);
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// cut out the overflow elements
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childArray.splice(childCount - overflowCount, overflowCount);
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childsJsx = childArray; // use what is left
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}
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}
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if (!this.state.enabled) {
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overflowJsx = this.props.createOverflowElement(
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0, childCount, this.toggleTruncate, true
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);
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}
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return (
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<div className={this.props.className}>
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{childsJsx}
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{overflowJsx}
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</div>
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);
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}
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});
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