110 lines
3.6 KiB
TypeScript
110 lines
3.6 KiB
TypeScript
/*
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Copyright 2021 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { MatrixEvent } from "matrix-js-sdk/src";
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import { MediaEventHelper } from "../../../utils/MediaEventHelper";
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import React, { createRef } from "react";
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import { RovingAccessibleTooltipButton } from "../../../accessibility/RovingTabIndex";
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import Spinner from "../elements/Spinner";
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import classNames from "classnames";
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import { _t } from "../../../languageHandler";
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import { replaceableComponent } from "../../../utils/replaceableComponent";
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import { DOWNLOAD_ICON_URL } from "./MFileBody";
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interface IProps {
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mxEvent: MatrixEvent;
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// XXX: It can take a cycle or two for the MessageActionBar to have all the props/setup
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// required to get us a MediaEventHelper, so we use a getter function instead to prod for
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// one.
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mediaEventHelperGet: () => MediaEventHelper;
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}
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interface IState {
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loading: boolean;
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blob?: Blob;
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}
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@replaceableComponent("views.messages.DownloadActionButton")
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export default class DownloadActionButton extends React.PureComponent<IProps, IState> {
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private iframe: React.RefObject<HTMLIFrameElement> = createRef();
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public constructor(props: IProps) {
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super(props);
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this.state = {
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loading: false,
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};
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}
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private onDownloadClick = async () => {
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if (this.state.loading) return;
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this.setState({ loading: true });
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if (this.state.blob) {
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// Cheat and trigger a download, again.
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return this.onFrameLoad();
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}
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const blob = await this.props.mediaEventHelperGet().sourceBlob.value;
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this.setState({ blob });
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};
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private onFrameLoad = () => {
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this.setState({ loading: false });
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// we aren't showing the iframe, so we can send over the bare minimum styles and such.
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this.iframe.current.contentWindow.postMessage({
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imgSrc: DOWNLOAD_ICON_URL,
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imgStyle: null,
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style: "",
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blob: this.state.blob,
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download: this.props.mediaEventHelperGet().fileName,
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textContent: "",
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auto: true, // autodownload
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}, '*');
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};
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public render() {
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let spinner: JSX.Element;
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if (this.state.loading) {
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spinner = <Spinner w={18} h={18} />;
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}
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const classes = classNames({
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'mx_MessageActionBar_maskButton': true,
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'mx_MessageActionBar_downloadButton': true,
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'mx_MessageActionBar_downloadSpinnerButton': !!spinner,
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});
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return <RovingAccessibleTooltipButton
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className={classes}
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title={spinner ? _t("Downloading") : _t("Download")}
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onClick={this.onDownloadClick}
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disabled={!!spinner}
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>
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{ spinner }
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{ this.state.blob && <iframe
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src={"usercontent/" /* XXX: Like MFileBody, this should come from the skin */}
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ref={this.iframe}
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onLoad={this.onFrameLoad}
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sandbox="allow-scripts allow-downloads allow-downloads-without-user-activation"
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style={{ display: "none" }}
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/> }
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</RovingAccessibleTooltipButton>;
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}
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}
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