ampache_react/app/components/elements/Pagination.jsx

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import React, { Component, PropTypes } from "react";
import { Link } from "react-router";
import CSSModules from "react-css-modules";
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import { defineMessages, injectIntl, intlShape, FormattedMessage, FormattedHTMLMessage } from "react-intl";
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import { messagesMap } from "../../utils";
import commonMessages from "../../locales/messagesDescriptors/common";
import messages from "../../locales/messagesDescriptors/elements/Pagination";
import css from "../../styles/elements/Pagination.scss";
const paginationMessages = defineMessages(messagesMap(Array.concat([], commonMessages, messages)));
class PaginationCSSIntl extends Component {
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computePaginationBounds(currentPage, nPages, maxNumberPagesShown=5) {
// Taken from http://stackoverflow.com/a/8608998/2626416
let lowerLimit = currentPage;
let upperLimit = currentPage;
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for (let b = 1; b < maxNumberPagesShown && b < nPages;) {
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if (lowerLimit > 1 ) {
lowerLimit--;
b++;
}
if (b < maxNumberPagesShown && upperLimit < nPages) {
upperLimit++;
b++;
}
}
return {
lowerLimit: lowerLimit,
upperLimit: upperLimit + 1 // +1 to ease iteration in for with <
};
}
goToPage(ev) {
ev.preventDefault();
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const pageNumber = parseInt(this.refs.pageInput.value);
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$(this.refs.paginationModal).modal("hide");
if (pageNumber) {
this.props.goToPage(pageNumber);
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}
}
dotsOnClick() {
$(this.refs.paginationModal).modal();
}
dotsOnKeyDown(ev) {
ev.preventDefault;
const code = ev.keyCode || ev.which;
if (code == 13 || code == 32) { // Enter or Space key
this.dotsOnClick(); // Fire same event as onClick
}
}
cancelModalBox() {
$(this.refs.paginationModal).modal("hide");
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}
render () {
const { formatMessage } = this.props.intl;
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const { lowerLimit, upperLimit } = this.computePaginationBounds(this.props.currentPage, this.props.nPages);
let pagesButton = [];
let key = 0; // key increment to ensure correct ordering
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if (lowerLimit > 1) {
// Push first page
pagesButton.push(
<li className="page-item" key={key}>
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<Link className="page-link" title={formatMessage(paginationMessages["app.pagination.goToPageWithoutMarkup"], { pageNumber: 1})} to={this.props.buildLinkToPage(1)}>
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<FormattedHTMLMessage {...paginationMessages["app.pagination.goToPage"]} values={{ pageNumber: 1 }} />
</Link>
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</li>
);
key++;
if (lowerLimit > 2) {
// Eventually push "…"
pagesButton.push(
<li className="page-item" key={key}>
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<span tabIndex="0" role="button" onKeyDown={this.dotsOnKeyDown.bind(this)} onClick={this.dotsOnClick.bind(this)}>&hellip;</span>
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</li>
);
key++;
}
}
for (let i = lowerLimit; i < upperLimit; i++) {
let className = "page-item";
let currentSpan = null;
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if (this.props.currentPage == i) {
className += " active";
currentSpan = <span className="sr-only">(<FormattedMessage {...paginationMessages["app.pagination.current"]} />)</span>;
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}
const title = formatMessage(paginationMessages["app.pagination.goToPageWithoutMarkup"], { pageNumber: i });
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pagesButton.push(
<li className={className} key={key}>
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<Link className="page-link" title={title} to={this.props.buildLinkToPage(i)}>
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<FormattedHTMLMessage {...paginationMessages["app.pagination.goToPage"]} values={{ pageNumber: i }} />
{currentSpan}
</Link>
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</li>
);
key++;
}
if (upperLimit < this.props.nPages) {
if (upperLimit < this.props.nPages - 1) {
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// Eventually push "…"
pagesButton.push(
<li className="page-item" key={key}>
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<span tabIndex="0" role="button" onKeyDown={this.dotsOnKeyDown.bind(this)} onClick={this.dotsOnClick.bind(this)}>&hellip;</span>
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</li>
);
key++;
}
const title = formatMessage(paginationMessages["app.pagination.goToPageWithoutMarkup"], { pageNumber: this.props.nPages });
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// Push last page
pagesButton.push(
<li className="page-item" key={key}>
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<Link className="page-link" title={title} to={this.props.buildLinkToPage(this.props.nPages)}>
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<FormattedHTMLMessage {...paginationMessages["app.pagination.goToPage"]} values={{ pageNumber: this.props.nPages }} />
</Link>
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</li>
);
}
if (pagesButton.length > 1) {
return (
<div>
<nav className="pagination-nav" styleName="nav" aria-label={formatMessage(paginationMessages["app.pagination.pageNavigation"])} role="navigation" >
<ul className="pagination" styleName="pointer" role="group">
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{ pagesButton }
</ul>
</nav>
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<div className="modal fade" ref="paginationModal" tabIndex="-1" role="dialog" aria-labelledby="paginationModalLabel">
<div className="modal-dialog" role="document">
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<div className="modal-content">
<div className="modal-header">
<button type="button" className="close" data-dismiss="modal" aria-label={formatMessage(paginationMessages["app.common.close"])}>&times;</button>
<h4 className="modal-title" id="paginationModalLabel">
<FormattedMessage {...paginationMessages["app.pagination.pageToGoTo"]} />
</h4>
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</div>
<div className="modal-body">
<form onSubmit={this.goToPage.bind(this)}>
<input className="form-control" autoComplete="off" type="number" ref="pageInput" aria-label={formatMessage(paginationMessages["app.pagination.pageToGoTo"])} autoFocus />
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</form>
</div>
<div className="modal-footer">
<button type="button" className="btn btn-default" onClick={this.cancelModalBox.bind(this)}>
<FormattedMessage {...paginationMessages["app.common.cancel"]} />
</button>
<button type="button" className="btn btn-primary" onClick={this.goToPage.bind(this)}>
<FormattedMessage {...paginationMessages["app.common.go"]} />
</button>
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</div>
</div>
</div>
</div>
</div>
);
}
return null;
}
}
PaginationCSSIntl.propTypes = {
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currentPage: PropTypes.number.isRequired,
goToPage: PropTypes.func.isRequired,
buildLinkToPage: PropTypes.func.isRequired,
nPages: PropTypes.number.isRequired,
intl: intlShape.isRequired,
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};
export default injectIntl(CSSModules(PaginationCSSIntl, css));