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141 lines
3.8 KiB
TypeScript
141 lines
3.8 KiB
TypeScript
import * as React from 'react';
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import { _ } from '@joplin/lib/locale';
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import Logger from '@joplin/utils/Logger';
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import { useCallback, useContext, useEffect, useRef, useState } from 'react';
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import ExtendedWebView from '../../ExtendedWebView';
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import { OnMessageEvent, WebViewControl } from '../../ExtendedWebView/types';
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import { clearAutosave, writeAutosave } from './autosave';
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import { DialogContext } from '../../DialogManager';
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import BackButtonService from '../../../services/BackButtonService';
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import useWebViewSetup, { ImageEditorControl } from '../../../contentScripts/imageEditorBundle/useWebViewSetup';
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const logger = Logger.create('ImageEditor');
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type OnSaveCallback = (svgData: string)=> Promise<void>;
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type OnCancelCallback = ()=> void;
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interface Props {
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themeId: number;
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resourceFilename: string|null;
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onSave: OnSaveCallback;
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onExit: OnCancelCallback;
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}
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const ImageEditor = (props: Props) => {
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const webViewRef = useRef<WebViewControl|null>(null);
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const [imageChanged, setImageChanged] = useState(false);
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const editorControlRef = useRef<ImageEditorControl|null>(null);
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const dialogs = useContext(DialogContext);
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const onRequestCloseEditor = useCallback((promptIfUnsaved = true) => {
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const discardChangesAndClose = async () => {
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await clearAutosave();
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props.onExit();
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};
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if (!imageChanged || !promptIfUnsaved) {
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void discardChangesAndClose();
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return;
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}
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dialogs.prompt(
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_('Save changes?'), _('This drawing may have unsaved changes.'), [
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{
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text: _('Discard changes'),
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onPress: discardChangesAndClose,
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style: 'destructive',
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},
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{
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text: _('Save changes'),
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onPress: () => {
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// saveDrawing calls props.onSave(...) which may close the
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// editor.
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void editorControlRef.current.saveThenExit();
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},
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},
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],
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);
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}, [dialogs, props.onExit, imageChanged]);
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useEffect(() => {
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const hardwareBackPressListener = () => {
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onRequestCloseEditor(true);
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return true;
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};
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BackButtonService.addHandler(hardwareBackPressListener);
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return () => {
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BackButtonService.removeHandler(hardwareBackPressListener);
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};
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}, [onRequestCloseEditor]);
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const { pageSetup, api: editorControl, webViewEventHandlers } = useWebViewSetup({
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webViewRef,
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themeId: props.themeId,
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onSetImageChanged: setImageChanged,
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onAutoSave: writeAutosave,
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onSave: props.onSave,
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onRequestCloseEditor,
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resourceFilename: props.resourceFilename,
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});
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editorControlRef.current = editorControl;
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const [html, setHtml] = useState('');
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useEffect(() => {
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setHtml(`
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8"/>
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<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"/>
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<style>
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${pageSetup.css}
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</style>
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</head>
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<body></body>
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</html>
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`);
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// Only set HTML initially (and don't reset). Changing the HTML reloads
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// the page.
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//
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// We need the HTML to initially have the correct CSS to prevent color
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// changes on load.
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// eslint-disable-next-line @seiyab/react-hooks/exhaustive-deps
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}, []);
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// eslint-disable-next-line @typescript-eslint/no-explicit-any -- Old code before rule was applied
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const onError = useCallback((event: any) => {
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logger.error('ImageEditor: WebView error: ', event);
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}, []);
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const onWebViewMessage = webViewEventHandlers.onMessage;
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const onMessage = useCallback((event: OnMessageEvent) => {
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const data = event.nativeEvent.data;
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if (typeof data === 'string' && data.startsWith('error:')) {
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logger.error(data);
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return;
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}
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onWebViewMessage(event);
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}, [onWebViewMessage]);
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return (
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<ExtendedWebView
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html={html}
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injectedJavaScript={pageSetup.js}
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allowFileAccessFromJs={true}
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onMessage={onMessage}
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onLoadEnd={webViewEventHandlers.onLoadEnd}
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onError={onError}
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ref={webViewRef}
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webviewInstanceId={'image-editor-js-draw'}
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/>
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);
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};
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export default ImageEditor;
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