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joplin/packages/app-desktop/gui/PdfViewer.tsx

109 lines
3.2 KiB
TypeScript

import * as React from 'react';
import { useCallback, useRef, useEffect } from 'react';
import Resource from '@joplin/lib/models/Resource';
import bridge from '../services/bridge';
import contextMenu from './NoteEditor/utils/contextMenu';
import { ContextMenuItemType, ContextMenuOptions } from './NoteEditor/utils/contextMenuUtils';
import CommandService from '@joplin/lib/services/CommandService';
import styled from 'styled-components';
import { themeStyle } from '@joplin/lib/theme';
const Window = styled.div`
height: 100%;
width: 100%;
position: fixed;
top: 0px;
left: 0px;
z-index: 999;
background-color: ${(props: any) => props.theme.backgroundColor};
color: ${(props: any) => props.theme.color};
`;
const IFrame = styled.iframe`
height: 100%;
width: 100%;
border: none;
`;
interface Props {
themeId: number;
// eslint-disable-next-line @typescript-eslint/ban-types -- Old code before rule was applied
dispatch: Function;
resource: any;
pageNo: number;
}
export default function PdfViewer(props: Props) {
const iframeRef = useRef<HTMLIFrameElement>(null);
const onClose = useCallback(() => {
props.dispatch({
type: 'DIALOG_CLOSE',
name: 'pdfViewer',
});
}, [props.dispatch]);
const openExternalViewer = useCallback(async () => {
await CommandService.instance().execute('openItem', `joplin://${props.resource.id}`);
}, [props.resource.id]);
const textSelected = useCallback(async (text: string) => {
if (!text) return;
const itemType = ContextMenuItemType.Text;
const menu = await contextMenu({
itemType,
resourceId: null,
filename: null,
mime: 'text/plain',
textToCopy: text,
linkToCopy: null,
htmlToCopy: '',
insertContent: () => { console.warn('insertContent() not implemented'); },
fireEditorEvent: () => { console.warn('fireEditorEvent() not implemented'); },
htmlToMd: async (_a, b, _c) => b,
mdToHtml: async (_a, b, _c) => { return { html: b, pluginAssets: [], cssStrings: [] }; },
} as ContextMenuOptions, props.dispatch);
menu.popup({ window: bridge().window() });
}, [props.dispatch]);
const onMessage_ = useCallback(async (event: any) => {
if (!event.data || !event.data.name) {
return;
}
if (event.data.name === 'close') {
onClose();
} else if (event.data.name === 'externalViewer') {
await openExternalViewer();
} else if (event.data.name === 'textSelected') {
await textSelected(event.data.text);
} else {
console.error('Unknown event received', event.data.name);
}
}, [openExternalViewer, textSelected, onClose]);
useEffect(() => {
const iframe = iframeRef.current;
iframe.contentWindow.addEventListener('message', onMessage_);
return () => {
// iframe.contentWindow is not always defined
// https://github.com/laurent22/joplin/issues/7528
if (iframe.contentWindow) iframe.contentWindow.removeEventListener('message', onMessage_);
};
}, [onMessage_]);
const theme = themeStyle(props.themeId);
return (
<Window theme={theme}>
<IFrame src="./vendor/lib/@joplin/pdf-viewer/index.html" x-url={Resource.fullPath(props.resource)}
x-appearance={theme.appearance} ref={iframeRef}
x-title={props.resource.title}
x-anchorpage={props.pageNo}
x-type="full"></IFrame>
</Window>
);
}