mirror of
https://github.com/laurent22/joplin.git
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112 lines
3.2 KiB
TypeScript
112 lines
3.2 KiB
TypeScript
import { useRef, useMemo, useCallback } from 'react';
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import Setting from '@joplinapp/lib/models/Setting';
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import useSource from './hooks/useSource';
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import useOnMessage from './hooks/useOnMessage';
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import useOnResourceLongPress from './hooks/useOnResourceLongPress';
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const React = require('react');
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const { View } = require('react-native');
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const { WebView } = require('react-native-webview');
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const { themeStyle } = require('../global-style.js');
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const BackButtonDialogBox = require('../BackButtonDialogBox').default;
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const { reg } = require('@joplinapp/lib/registry.js');
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interface Props {
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themeId: number,
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style: any,
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noteBody: string,
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noteMarkupLanguage: number,
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highlightedKeywords: string[],
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noteResources: any,
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paddingBottom: number,
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noteHash: string,
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onJoplinLinkClick: Function,
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onCheckboxChange?: Function,
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onMarkForDownload?: Function,
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onLoadEnd?: Function,
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}
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export default function NoteBodyViewer(props:Props) {
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const theme = themeStyle(props.themeId);
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const webViewStyle:any = useMemo(() => {
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return { backgroundColor: theme.backgroundColor };
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}, [theme.backgroundColor]);
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const dialogBoxRef = useRef(null);
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const { source, injectedJs } = useSource(
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props.noteBody,
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props.noteMarkupLanguage,
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props.themeId,
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props.highlightedKeywords,
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props.noteResources,
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props.paddingBottom,
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props.noteHash
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);
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const onResourceLongPress = useOnResourceLongPress(
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props.onJoplinLinkClick,
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dialogBoxRef
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);
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const onMessage = useOnMessage(
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props.onCheckboxChange,
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props.noteBody,
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props.onMarkForDownload,
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props.onJoplinLinkClick,
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onResourceLongPress
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);
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const onLoadEnd = useCallback(() => {
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if (props.onLoadEnd) props.onLoadEnd();
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}, [props.onLoadEnd]);
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function onError() {
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reg.logger().error('WebView error');
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}
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// On iOS scalesPageToFit work like this:
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//
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// Find the widest image, resize it *and everything else* by x% so that
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// the image fits within the viewport. The problem is that it means if there's
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// a large image, everything is going to be scaled to a very small size, making
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// the text unreadable.
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//
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// On Android:
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//
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// Find the widest elements and scale them (and them only) to fit within the viewport
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// It means it's going to scale large images, but the text will remain at the normal
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// size.
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//
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// That means we can use scalesPageToFix on Android but not on iOS.
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// The weird thing is that on iOS, scalesPageToFix=false along with a CSS
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// rule "img { max-width: 100% }", works like scalesPageToFix=true on Android.
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// So we use scalesPageToFix=false on iOS along with that CSS rule.
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//
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// 2020-10-15: As we've now fully switched to WebKit for iOS (useWebKit=true) and
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// since the WebView package went through many versions it's possible that
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// the above no longer applies.
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return (
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<View style={props.style}>
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<WebView
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theme={theme}
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useWebKit={true}
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allowingReadAccessToURL={`file://${Setting.value('resourceDir')}`}
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style={webViewStyle}
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source={source}
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injectedJavaScript={injectedJs.join('\n')}
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originWhitelist={['file://*', './*', 'http://*', 'https://*']}
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mixedContentMode="always"
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allowFileAccess={true}
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onLoadEnd={onLoadEnd}
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onError={onError}
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onMessage={onMessage}
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/>
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<BackButtonDialogBox ref={dialogBoxRef}/>
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</View>
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);
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}
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