82 lines
2.2 KiB
JavaScript
82 lines
2.2 KiB
JavaScript
import { BASE_URL, NODE_ID, COMMENT_NODE_CLASSNAME_PREFIX } from 'common/constants';
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if (document.readyState === 'loading') {
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document.addEventListener('DOMContentLoaded', init);
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} else {
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init();
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}
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function init() {
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const node = document.getElementById(NODE_ID);
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if (!node) {
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console.error('Remark42: Can\'t find root node.');
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return;
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}
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try {
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remark_config = remark_config || {};
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} catch (e) {
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console.error('Remark42: Config object is undefined.');
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return;
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}
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if (!remark_config.site_id) {
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console.error('Remark42: Site ID is undefined.');
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return;
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}
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remark_config.url = (remark_config.url || window.location.href).split('#')[0];
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const query = Object.keys(remark_config)
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.map(key => `${encodeURIComponent(key)}=${encodeURIComponent(remark_config[key])}`)
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.join('&');
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node.innerHTML = `
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<iframe
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src="${process.env.NODE_ENV === 'production' ? `${BASE_URL}/web` : ''}/iframe.html?${query}"
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width="100%"
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frameborder="0"
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allowtransparency="true"
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scrolling="no"
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tabindex="0"
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title="Remark42"
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style="width: 1px !important; min-width: 100% !important; border: none !important; overflow: hidden !important;"
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horizontalscrolling="no"
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verticalscrolling="no"
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></iframe>
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`;
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const iframe = node.getElementsByTagName('iframe')[0];
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window.addEventListener('message', receiveMessages);
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window.addEventListener('hashchange', postHashToIframe);
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setTimeout(postHashToIframe, 1000);
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function receiveMessages(event) {
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try {
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const data = typeof event.data === 'string' ? JSON.parse(event.data) : event.data;
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if (data.remarkIframeHeight) {
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iframe.style.height = `${data.remarkIframeHeight}px`;
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}
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if (data.scrollTo) {
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window.scrollTo(window.pageXOffset, data.scrollTo + iframe.getBoundingClientRect().top + window.pageYOffset);
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}
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} catch (e) {}
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}
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function postHashToIframe(e) {
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const hash = e ? `#${e.newURL.split('#')[1]}` : window.location.hash;
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if (hash.indexOf(`#${COMMENT_NODE_CLASSNAME_PREFIX}`) === 0) {
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if (e) e.preventDefault();
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iframe.contentWindow.postMessage(JSON.stringify({ hash }), '*');
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}
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}
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}
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