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168 lines
5.3 KiB
JavaScript
168 lines
5.3 KiB
JavaScript
import React from 'react';
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import ReactDOM from 'react-dom';
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import _ from "underscore";
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import {EventedIFrame} from 'nylas-component-kit';
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import {Utils, QuotedHTMLTransformer, MessageStore} from 'nylas-exports';
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import {autolink} from './autolinker';
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import {autoscaleImages} from './autoscale-images';
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import {addInlineImageListeners} from './inline-image-listeners';
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import EmailFrameStylesStore from './email-frame-styles-store';
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export default class EmailFrame extends React.Component {
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static displayName = 'EmailFrame';
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static propTypes = {
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content: React.PropTypes.string.isRequired,
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message: React.PropTypes.object,
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showQuotedText: React.PropTypes.bool,
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};
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componentDidMount() {
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this._mounted = true;
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this._writeContent();
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this._unlisten = EmailFrameStylesStore.listen(this._writeContent);
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}
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shouldComponentUpdate(nextProps, nextState) {
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return (!Utils.isEqualReact(nextProps, this.props) ||
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!Utils.isEqualReact(nextState, this.state));
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}
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componentDidUpdate() {
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this._writeContent();
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}
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componentWillUnmount() {
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this._mounted = false;
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if (this._unlisten) {
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this._unlisten();
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}
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}
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_emailContent = () => {
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// When showing quoted text, always return the pure content
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if (this.props.showQuotedText) {
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return this.props.content;
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}
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return QuotedHTMLTransformer.removeQuotedHTML(this.props.content, {
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keepIfWholeBodyIsQuote: true,
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});
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}
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_writeContent = () => {
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const iframeNode = ReactDOM.findDOMNode(this._iframeComponent);
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const doc = iframeNode.contentDocument;
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if (!doc) { return; }
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doc.open();
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// NOTE: The iframe must have a modern DOCTYPE. The lack of this line
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// will cause some bizzare non-standards compliant rendering with the
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// message bodies. This is particularly felt with <table> elements use
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// the `border-collapse: collapse` css property while setting a
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// `padding`.
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doc.write("<!DOCTYPE html>");
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const styles = EmailFrameStylesStore.styles();
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if (styles) {
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doc.write(`<style>${styles}</style>`);
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}
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doc.write(`<div id='inbox-html-wrapper'>${this._emailContent()}</div>`);
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doc.close();
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autolink(doc, {async: true});
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autoscaleImages(doc);
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addInlineImageListeners(doc);
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for (const extension of MessageStore.extensions()) {
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if (!extension.renderedMessageBodyIntoDocument) {
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continue;
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}
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try {
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extension.renderedMessageBodyIntoDocument({
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document: doc,
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message: this.props.message,
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iframe: iframeNode,
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});
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} catch (e) {
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NylasEnv.reportError(e);
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}
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}
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// Notify the EventedIFrame that we've replaced it's document (with `open`)
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// so it can attach event listeners again.
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this._iframeComponent.didReplaceDocument();
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this._onMustRecalculateFrameHeight();
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}
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_onMustRecalculateFrameHeight = () => {
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this._iframeComponent.setHeightQuietly(0);
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this._lastComputedHeight = 0;
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this._setFrameHeight();
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}
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_getFrameHeight = (doc) => {
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let height = 0;
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// If documentElement has a scroll height, prioritize that as height
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// If not, fall back to body scroll height by setting it to auto
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if (doc && doc.documentElement && doc.documentElement.scrollHeight > 0) {
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height = doc.documentElement.scrollHeight;
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} else if (doc && doc.body) {
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const style = window.getComputedStyle(doc.body);
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if (style.height === '0px') {
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doc.body.style.height = "auto";
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}
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height = doc.body.scrollHeight;
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}
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// scrollHeight does not include space required by scrollbar
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return height + 25;
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}
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_setFrameHeight = () => {
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if (!this._mounted) {
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return;
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}
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// Q: What's up with this holder?
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// A: If you resize the window, or do something to trigger setFrameHeight
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// on an already-loaded message view, all the heights go to zero for a brief
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// second while the heights are recomputed. This causes the ScrollRegion to
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// reset it's scrollTop to ~0 (the new combined heiht of all children).
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// To prevent this, the holderNode holds the last computed height until
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// the new height is computed.
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const iframeNode = ReactDOM.findDOMNode(this._iframeComponent);
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const height = this._getFrameHeight(iframeNode.contentDocument);
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// Why 5px? Some emails have elements with a height of 100%, and then put
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// tracking pixels beneath that. In these scenarios, the scrollHeight of the
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// message is always <100% + 1px>, which leads us to resize them constantly.
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// This is a hack, but I'm not sure of a better solution.
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if (Math.abs(height - this._lastComputedHeight) > 5) {
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this._iframeComponent.setHeightQuietly(height);
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this._iframeHeightHolderEl.style.height = `${height}px`;
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this._lastComputedHeight = height;
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}
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if (iframeNode.contentDocument.readyState !== 'complete') {
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_.defer(() => this._setFrameHeight());
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}
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}
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render() {
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return (
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<div
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className="iframe-container"
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ref={(el) => { this._iframeHeightHolderEl = el; }}
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style={{height: this._lastComputedHeight}}
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>
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<EventedIFrame
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ref={(cm) => { this._iframeComponent = cm; }}
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seamless="seamless"
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searchable
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onResize={this._onMustRecalculateFrameHeight}
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/>
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</div>
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);
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}
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}
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