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-rw-r--r--webapp/components/markdown_image.jsx64
1 files changed, 56 insertions, 8 deletions
diff --git a/webapp/components/markdown_image.jsx b/webapp/components/markdown_image.jsx
index 75a6ce9ea..2634ef3f6 100644
--- a/webapp/components/markdown_image.jsx
+++ b/webapp/components/markdown_image.jsx
@@ -1,19 +1,67 @@
// Copyright (c) 2017-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
-import React, {PureComponent} from 'react';
+import PropTypes from 'prop-types';
+import React from 'react';
import {postListScrollChange} from 'actions/global_actions.jsx';
-export default class MarkdownImage extends PureComponent {
- handleLoad = () => {
- postListScrollChange();
+const WAIT_FOR_HEIGHT_TIMEOUT = 100;
+
+export default class MarkdownImage extends React.PureComponent {
+ static propTypes = {
+
+ /*
+ * The href of the image to be loaded
+ */
+ href: PropTypes.string
}
- render() {
- const props = {...this.props};
- props.onLoad = this.handleLoad;
+ constructor(props) {
+ super(props);
+
+ this.heightTimeout = 0;
+ }
+
+ componentDidMount() {
+ this.waitForHeight();
+ }
+
+ componentDidUpdate(prevProps) {
+ if (this.props.href !== prevProps.href) {
+ this.waitForHeight();
+ }
+ }
- return <img {...props}/>;
+ componentWillUnmount() {
+ this.stopWaitingForHeight();
+ }
+
+ waitForHeight = () => {
+ if (this.refs.image.height) {
+ setTimeout(postListScrollChange, 0);
+
+ this.heightTimeout = 0;
+ } else {
+ this.heightTimeout = setTimeout(this.waitForHeight, WAIT_FOR_HEIGHT_TIMEOUT);
+ }
+ }
+
+ stopWaitingForHeight = () => {
+ if (this.heightTimeout !== 0) {
+ clearTimeout(this.heightTimeout);
+ this.heightTimeout = 0;
+ }
+ }
+
+ render() {
+ return (
+ <img
+ {...this.props}
+ ref='image'
+ onLoad={this.stopWaitingForHeight}
+ onError={this.stopWaitingForHeight}
+ />
+ );
}
}