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path: root/packages/gitbook-core/src/components/Link.js
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const React = require('react');
const ReactRedux = require('react-redux');

const File = require('../models/File');
const SummaryArticle = require('../models/SummaryArticle');
const SummaryArticleShape = require('../propTypes/SummaryArticle');
const FileShape = require('../propTypes/File');

/**
 * Link to another page or file in the book. Using this component instead of <a>
 * avoid broken links when location changes.
 *
 * @type {ReactClass}
 */
const Link = React.createClass({
    propTypes: {
        currentFile: FileShape,
        children:    React.PropTypes.node,

        // Destination of the link
        to: React.PropTypes.oneOfType([
            React.PropTypes.string,
            SummaryArticleShape,
            FileShape
        ])
    },

    render() {
        const { currentFile, to, children, ...props } = this.props;
        let href = to;
        delete props.dispatch;

        if (SummaryArticle.is(to) || File.is(to)) {
            href = to.url;
        }

        href = currentFile.relative(href);
        return <a href={href} {...props}>{children}</a>;
    }
});

module.exports = ReactRedux.connect((state) => {
    return { currentFile: state.file };
})(Link);