mirror of
https://github.com/Foundry376/Mailspring.git
synced 2024-11-12 12:40:08 +08:00
134 lines
4.1 KiB
React
134 lines
4.1 KiB
React
|
import React from 'react';
|
||
|
|
import ReactDOM from 'react-dom';
|
||
|
|
import {EventedIFrame} from 'nylas-component-kit';
|
||
|
|
import {Utils} from 'nylas-exports';
|
||
|
|
|
||
|
|
export default class EmailFrame extends React.Component {
|
||
|
|
static displayName = 'EmailFrame';
|
||
|
|
|
||
|
|
static propTypes = {
|
||
|
|
content: React.PropTypes.string.isRequired,
|
||
|
|
};
|
||
|
|
|
||
|
|
componentDidMount() {
|
||
|
|
this._mounted = true;
|
||
|
|
this._writeContent();
|
||
|
|
}
|
||
|
|
|
||
|
|
shouldComponentUpdate(nextProps, nextState) {
|
||
|
|
return (!Utils.isEqualReact(nextProps, this.props) || !Utils.isEqualReact(nextState, this.state));
|
||
|
|
}
|
||
|
|
|
||
|
|
componentDidUpdate() {
|
||
|
|
this._writeContent();
|
||
|
|
}
|
||
|
|
|
||
|
|
componentWillUnmount() {
|
||
|
|
this._mounted = false;
|
||
|
|
if (this._unlisten) {
|
||
|
|
this._unlisten();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
_writeContent = () => {
|
||
|
|
const iframeNode = ReactDOM.findDOMNode(this.refs.iframe);
|
||
|
|
const doc = iframeNode.contentDocument;
|
||
|
|
if (!doc) { return; }
|
||
|
|
doc.open();
|
||
|
|
|
||
|
|
// NOTE: The iframe must have a modern DOCTYPE. The lack of this line
|
||
|
|
// will cause some bizzare non-standards compliant rendering with the
|
||
|
|
// message bodies. This is particularly felt with <table> elements use
|
||
|
|
// the `border-collapse: collapse` css property while setting a
|
||
|
|
// `padding`.
|
||
|
|
doc.write("<!DOCTYPE html>");
|
||
|
|
doc.write(`<div id='inbox-html-wrapper'>${this.props.content}</div>`);
|
||
|
|
doc.close();
|
||
|
|
|
||
|
|
// autolink(doc, {async: true});
|
||
|
|
// autoscaleImages(doc);
|
||
|
|
// addInlineDownloadPrompts(doc);
|
||
|
|
|
||
|
|
// Notify the EventedIFrame that we've replaced it's document (with `open`)
|
||
|
|
// so it can attach event listeners again.
|
||
|
|
this.refs.iframe.didReplaceDocument();
|
||
|
|
this._onMustRecalculateFrameHeight();
|
||
|
|
}
|
||
|
|
|
||
|
|
_onMustRecalculateFrameHeight = () => {
|
||
|
|
this.refs.iframe.setHeightQuietly(0);
|
||
|
|
this._lastComputedHeight = 0;
|
||
|
|
this._setFrameHeight();
|
||
|
|
}
|
||
|
|
|
||
|
|
_getFrameHeight = (doc) => {
|
||
|
|
let height = 0;
|
||
|
|
|
||
|
|
if (doc && doc.body) {
|
||
|
|
// Why reset the height? body.scrollHeight will always be 0 if the height
|
||
|
|
// of the body is dependent on the iframe height e.g. if height ===
|
||
|
|
// 100% in inline styles or an email stylesheet
|
||
|
|
const style = window.getComputedStyle(doc.body)
|
||
|
|
if (style.height === '0px') {
|
||
|
|
doc.body.style.height = "auto"
|
||
|
|
}
|
||
|
|
height = doc.body.scrollHeight;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (doc && doc.documentElement) {
|
||
|
|
height = doc.documentElement.scrollHeight;
|
||
|
|
}
|
||
|
|
|
||
|
|
// scrollHeight does not include space required by scrollbar
|
||
|
|
return height + 25;
|
||
|
|
}
|
||
|
|
|
||
|
|
_setFrameHeight = () => {
|
||
|
|
if (!this._mounted) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Q: What's up with this holder?
|
||
|
|
// A: If you resize the window, or do something to trigger setFrameHeight
|
||
|
|
// on an already-loaded message view, all the heights go to zero for a brief
|
||
|
|
// second while the heights are recomputed. This causes the ScrollRegion to
|
||
|
|
// reset it's scrollTop to ~0 (the new combined heiht of all children).
|
||
|
|
// To prevent this, the holderNode holds the last computed height until
|
||
|
|
// the new height is computed.
|
||
|
|
const holderNode = ReactDOM.findDOMNode(this.refs.iframeHeightHolder);
|
||
|
|
const iframeNode = ReactDOM.findDOMNode(this.refs.iframe);
|
||
|
|
const height = this._getFrameHeight(iframeNode.contentDocument);
|
||
|
|
|
||
|
|
// Why 5px? Some emails have elements with a height of 100%, and then put
|
||
|
|
// tracking pixels beneath that. In these scenarios, the scrollHeight of the
|
||
|
|
// message is always <100% + 1px>, which leads us to resize them constantly.
|
||
|
|
// This is a hack, but I'm not sure of a better solution.
|
||
|
|
if (Math.abs(height - this._lastComputedHeight) > 5) {
|
||
|
|
this.refs.iframe.setHeightQuietly(height);
|
||
|
|
holderNode.style.height = `${height}px`;
|
||
|
|
this._lastComputedHeight = height;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (iframeNode.contentDocument.readyState !== 'complete') {
|
||
|
|
setTimeout(() => this._setFrameHeight(), 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
render() {
|
||
|
|
return (
|
||
|
|
<div
|
||
|
|
className="iframe-container"
|
||
|
|
ref="iframeHeightHolder"
|
||
|
|
style={{height: this._lastComputedHeight}}
|
||
|
|
>
|
||
|
|
<EventedIFrame
|
||
|
|
ref="iframe"
|
||
|
|
seamless="seamless"
|
||
|
|
searchable
|
||
|
|
onResize={this._onMustRecalculateFrameHeight}
|
||
|
|
/>
|
||
|
|
</div>
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|