import Setting from '@joplin/lib/models/Setting';
import shim from '@joplin/lib/shim';
import { themeStyle } from '@joplin/lib/theme';
import EditLinkDialog from './EditLinkDialog';
import { defaultSearchState, SearchPanel } from './SearchPanel';
import ExtendedWebView from '../ExtendedWebView';
import * as React from 'react';
import { forwardRef, useImperativeHandle } from 'react';
import { useMemo, useState, useCallback, useRef } from 'react';
import { LayoutChangeEvent, NativeSyntheticEvent, View, ViewStyle } from 'react-native';
const { editorFont } = require('../global-style');
import { EditorControl, EditorSettings, SelectionRange } from './types';
import { _ } from '@joplin/lib/locale';
import MarkdownToolbar from './MarkdownToolbar/MarkdownToolbar';
import { ChangeEvent, EditorEvent, EditorEventType, SelectionRangeChangeEvent, UndoRedoDepthChangeEvent } from '@joplin/editor/events';
import { EditorCommandType, EditorKeymap, EditorLanguageType, ContentScriptData, SearchState } from '@joplin/editor/types';
import supportsCommand from '@joplin/editor/CodeMirror/editorCommands/supportsCommand';
import SelectionFormatting, { defaultSelectionFormatting } from '@joplin/editor/SelectionFormatting';
import Logger from '@joplin/utils/Logger';
import { WebViewErrorEvent } from 'react-native-webview/lib/RNCWebViewNativeComponent';
type ChangeEventHandler = (event: ChangeEvent)=> void;
type UndoRedoDepthChangeHandler = (event: UndoRedoDepthChangeEvent)=> void;
type SelectionChangeEventHandler = (event: SelectionRangeChangeEvent)=> void;
type OnAttachCallback = ()=> void;
const logger = Logger.create('NoteEditor');
interface Props {
themeId: number;
initialText: string;
initialSelection?: SelectionRange;
style: ViewStyle;
contentStyle?: ViewStyle;
toolbarEnabled: boolean;
readOnly: boolean;
onChange: ChangeEventHandler;
onSelectionChange: SelectionChangeEventHandler;
onUndoRedoDepthChange: UndoRedoDepthChangeHandler;
onAttach: OnAttachCallback;
}
function fontFamilyFromSettings() {
const font = editorFont(Setting.value('style.editor.fontFamily'));
return font ? `${font}, sans-serif` : 'sans-serif';
}
function useCss(themeId: number): string {
return useMemo(() => {
const theme = themeStyle(themeId);
return `
:root {
background-color: ${theme.backgroundColor};
}
body {
margin: 0;
height: 100vh;
width: 100vh;
width: 100vw;
min-width: 100vw;
box-sizing: border-box;
padding-left: 1px;
padding-right: 1px;
padding-bottom: 1px;
padding-top: 10px;
font-size: 13pt;
}
`;
}, [themeId]);
}
function useHtml(css: string): string {
const [html, setHtml] = useState('');
useMemo(() => {
setHtml(`
${_('Note editor')}
`);
}, [css]);
return html;
}
function editorTheme(themeId: number) {
const fontSizeInPx = Setting.value('style.editor.fontSize');
// Convert from `px` to `em`. To support font size scaling based on
// system accessibility settings, we need to provide font sizes in `em`.
// 16px is about 1em with the default root font size.
const estimatedFontSizeInEm = fontSizeInPx / 16;
return {
...themeStyle(themeId),
// To allow accessibility font scaling, we also need to set the
// fontSize to a value in `em`s (relative scaling relative to
// parent font size).
fontSizeUnits: 'em',
fontSize: estimatedFontSizeInEm,
fontFamily: fontFamilyFromSettings(),
};
}
type OnInjectJSCallback = (js: string)=> void;
type OnSetVisibleCallback = (visible: boolean)=> void;
type OnSearchStateChangeCallback = (state: SearchState)=> void;
const useEditorControl = (
injectJS: OnInjectJSCallback, setLinkDialogVisible: OnSetVisibleCallback,
setSearchState: OnSearchStateChangeCallback,
): EditorControl => {
return useMemo(() => {
const execCommand = (command: EditorCommandType) => {
injectJS(`cm.execCommand(${JSON.stringify(command)})`);
};
const setSearchStateCallback = (state: SearchState) => {
injectJS(`cm.setSearchState(${JSON.stringify(state)})`);
setSearchState(state);
};
const control: EditorControl = {
supportsCommand(command: EditorCommandType) {
return supportsCommand(command);
},
execCommand,
undo() {
injectJS('cm.undo()');
},
redo() {
injectJS('cm.redo()');
},
select(anchor: number, head: number) {
injectJS(
`cm.select(${JSON.stringify(anchor)}, ${JSON.stringify(head)});`,
);
},
setScrollPercent(fraction: number) {
injectJS(`cm.setScrollFraction(${JSON.stringify(fraction)})`);
},
insertText(text: string) {
injectJS(`cm.insertText(${JSON.stringify(text)});`);
},
updateBody(newBody: string) {
injectJS(`cm.updateBody(${JSON.stringify(newBody)});`);
},
updateSettings(newSettings: EditorSettings) {
injectJS(`cm.updateSettings(${JSON.stringify(newSettings)})`);
},
toggleBolded() {
execCommand(EditorCommandType.ToggleBolded);
},
toggleItalicized() {
execCommand(EditorCommandType.ToggleItalicized);
},
toggleOrderedList() {
execCommand(EditorCommandType.ToggleNumberedList);
},
toggleUnorderedList() {
execCommand(EditorCommandType.ToggleBulletedList);
},
toggleTaskList() {
execCommand(EditorCommandType.ToggleCheckList);
},
toggleCode() {
execCommand(EditorCommandType.ToggleCode);
},
toggleMath() {
execCommand(EditorCommandType.ToggleMath);
},
toggleHeaderLevel(level: number) {
const levelToCommand = [
EditorCommandType.ToggleHeading1,
EditorCommandType.ToggleHeading2,
EditorCommandType.ToggleHeading3,
EditorCommandType.ToggleHeading4,
EditorCommandType.ToggleHeading5,
];
const index = level - 1;
if (index < 0 || index >= levelToCommand.length) {
throw new Error(`Unsupported header level ${level}`);
}
execCommand(levelToCommand[index]);
},
increaseIndent() {
execCommand(EditorCommandType.IndentMore);
},
decreaseIndent() {
execCommand(EditorCommandType.IndentLess);
},
updateLink(label: string, url: string) {
injectJS(`cm.updateLink(
${JSON.stringify(label)},
${JSON.stringify(url)}
);`);
},
scrollSelectionIntoView() {
execCommand(EditorCommandType.ScrollSelectionIntoView);
},
showLinkDialog() {
setLinkDialogVisible(true);
},
hideLinkDialog() {
setLinkDialogVisible(false);
},
hideKeyboard() {
injectJS('document.activeElement?.blur();');
},
setContentScripts: async (plugins: ContentScriptData[]) => {
injectJS(`cm.setContentScripts(${JSON.stringify(plugins)});`);
},
setSearchState: setSearchStateCallback,
searchControl: {
findNext() {
execCommand(EditorCommandType.FindNext);
},
findPrevious() {
execCommand(EditorCommandType.FindPrevious);
},
replaceNext() {
execCommand(EditorCommandType.ReplaceNext);
},
replaceAll() {
execCommand(EditorCommandType.ReplaceAll);
},
showSearch() {
execCommand(EditorCommandType.ShowSearch);
},
hideSearch() {
execCommand(EditorCommandType.HideSearch);
},
setSearchState: setSearchStateCallback,
},
};
return control;
}, [injectJS, setLinkDialogVisible, setSearchState]);
};
function NoteEditor(props: Props, ref: any) {
const webviewRef = useRef(null);
const setInitialSelectionJS = props.initialSelection ? `
cm.select(${props.initialSelection.start}, ${props.initialSelection.end});
cm.execCommand('scrollSelectionIntoView');
` : '';
const editorSettings: EditorSettings = {
themeId: props.themeId,
themeData: editorTheme(props.themeId),
katexEnabled: Setting.value('markdown.plugin.katex'),
spellcheckEnabled: Setting.value('editor.mobile.spellcheckEnabled'),
language: EditorLanguageType.Markdown,
useExternalSearch: true,
readOnly: props.readOnly,
keymap: EditorKeymap.Default,
automatchBraces: false,
ignoreModifiers: false,
indentWithTabs: false,
};
const injectedJavaScript = `
function postMessage(name, data) {
window.ReactNativeWebView.postMessage(JSON.stringify({
data,
name,
}));
}
function logMessage(...msg) {
postMessage('onLog', { value: msg });
}
// Globalize logMessage, postMessage
window.logMessage = logMessage;
window.postMessage = postMessage;
window.onerror = (message, source, lineno) => {
window.ReactNativeWebView.postMessage(
"error: " + message + " in file://" + source + ", line " + lineno
);
};
window.onunhandledrejection = (event) => {
window.ReactNativeWebView.postMessage(
"error: Unhandled promise rejection: " + event
);
};
if (!window.cm) {
// This variable is not used within this script
// but is called using "injectJavaScript" from
// the wrapper component.
window.cm = null;
try {
${shim.injectedJs('codeMirrorBundle')};
const parentElement = document.getElementsByClassName('CodeMirror')[0];
const initialText = ${JSON.stringify(props.initialText)};
const settings = ${JSON.stringify(editorSettings)};
cm = codeMirrorBundle.initCodeMirror(parentElement, initialText, settings);
${setInitialSelectionJS}
window.onresize = () => {
cm.execCommand('scrollSelectionIntoView');
};
} catch (e) {
window.ReactNativeWebView.postMessage("error:" + e.message + ": " + JSON.stringify(e))
}
}
true;
`;
const css = useCss(props.themeId);
const html = useHtml(css);
const [selectionState, setSelectionState] = useState(defaultSelectionFormatting);
const [linkDialogVisible, setLinkDialogVisible] = useState(false);
const [searchState, setSearchState] = useState(defaultSearchState);
// Runs [js] in the context of the CodeMirror frame.
const injectJS = (js: string) => {
webviewRef.current.injectJS(js);
};
const editorControl = useEditorControl(
injectJS, setLinkDialogVisible, setSearchState,
);
useImperativeHandle(ref, () => {
return editorControl;
});
const onMessage = useCallback((event: any) => {
const data = event.nativeEvent.data;
if (data.indexOf('error:') === 0) {
logger.error('CodeMirror:', data);
return;
}
const msg = JSON.parse(data);
// eslint-disable-next-line @typescript-eslint/ban-types -- Old code before rule was applied
const handlers: Record = {
onLog: (event: any) => {
logger.info('CodeMirror:', ...event.value);
},
onEditorEvent: (event: EditorEvent) => {
let exhaustivenessCheck: never;
switch (event.kind) {
case EditorEventType.Change:
props.onChange(event);
break;
case EditorEventType.UndoRedoDepthChange:
props.onUndoRedoDepthChange(event);
break;
case EditorEventType.SelectionRangeChange:
props.onSelectionChange(event);
break;
case EditorEventType.SelectionFormattingChange:
setSelectionState(event.formatting);
break;
case EditorEventType.EditLink:
editorControl.showLinkDialog();
break;
case EditorEventType.UpdateSearchDialog:
setSearchState(event.searchState);
if (event.searchState.dialogVisible) {
editorControl.searchControl.showSearch();
} else {
editorControl.searchControl.hideSearch();
}
break;
case EditorEventType.Scroll:
// Not handled
break;
default:
exhaustivenessCheck = event;
return exhaustivenessCheck;
}
return;
},
};
if (handlers[msg.name]) {
handlers[msg.name](msg.data);
} else {
logger.warn('Unsupported CodeMirror message:', msg);
}
}, [props.onSelectionChange, props.onUndoRedoDepthChange, props.onChange, editorControl]);
const onError = useCallback((event: NativeSyntheticEvent) => {
logger.error(`Load error: Code ${event.nativeEvent.code}: ${event.nativeEvent.description}`);
}, []);
const [hasSpaceForToolbar, setHasSpaceForToolbar] = useState(true);
const toolbarEnabled = props.toolbarEnabled && hasSpaceForToolbar;
const onContainerLayout = useCallback((event: LayoutChangeEvent) => {
const containerHeight = event.nativeEvent.layout.height;
if (containerHeight < 140) {
setHasSpaceForToolbar(false);
} else {
setHasSpaceForToolbar(true);
}
}, []);
const toolbar = ;
return (
{toolbarEnabled ? toolbar : null}
);
}
export default forwardRef(NoteEditor);