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@@ -0,0 +1,671 @@
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+import { Fragment, memo, useEffect, useRef, useState } from "react";
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+import { collapseDownIcon, upIcon, searchIcon } from "./icons";
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+import { TextField } from "./TextField";
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+import { Button } from "./Button";
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+import { useApp, useExcalidrawSetAppState } from "./App";
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+import { debounce } from "lodash";
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+import type { AppClassProperties } from "../types";
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+import { isTextElement, newTextElement } from "../element";
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+import type { ExcalidrawTextElement } from "../element/types";
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+import { measureText } from "../element/textElement";
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+import { addEventListener, getFontString } from "../utils";
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+import { KEYS } from "../keys";
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+
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+import "./SearchMenu.scss";
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+import clsx from "clsx";
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+import { atom, useAtom } from "jotai";
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+import { jotaiScope } from "../jotai";
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+import { t } from "../i18n";
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+import { isElementCompletelyInViewport } from "../element/sizeHelpers";
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+import { randomInteger } from "../random";
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+import { CLASSES, EVENT } from "../constants";
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+import { useStable } from "../hooks/useStable";
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+
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+const searchKeywordAtom = atom<string>("");
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+export const searchItemInFocusAtom = atom<number | null>(null);
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+
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+const SEARCH_DEBOUNCE = 350;
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+
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+type SearchMatchItem = {
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+ textElement: ExcalidrawTextElement;
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+ keyword: string;
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+ index: number;
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+ preview: {
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+ indexInKeyword: number;
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+ previewText: string;
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+ moreBefore: boolean;
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+ moreAfter: boolean;
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+ };
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+ matchedLines: {
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+ offsetX: number;
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+ offsetY: number;
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+ width: number;
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+ height: number;
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+ }[];
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+};
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+
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+type SearchMatches = {
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+ nonce: number | null;
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+ items: SearchMatchItem[];
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+};
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+
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+export const SearchMenu = () => {
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+ const app = useApp();
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+ const setAppState = useExcalidrawSetAppState();
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+
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+ const searchInputRef = useRef<HTMLInputElement>(null);
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+
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+ const [keyword, setKeyword] = useAtom(searchKeywordAtom, jotaiScope);
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+ const [searchMatches, setSearchMatches] = useState<SearchMatches>({
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+ nonce: null,
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+ items: [],
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+ });
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+ const searchedKeywordRef = useRef<string | null>();
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+ const lastSceneNonceRef = useRef<number | undefined>();
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+
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+ const [focusIndex, setFocusIndex] = useAtom(
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+ searchItemInFocusAtom,
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+ jotaiScope,
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+ );
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+ const elementsMap = app.scene.getNonDeletedElementsMap();
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+
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+ useEffect(() => {
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+ const trimmedKeyword = keyword.trim();
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+ if (
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+ trimmedKeyword !== searchedKeywordRef.current ||
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+ app.scene.getSceneNonce() !== lastSceneNonceRef.current
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+ ) {
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+ searchedKeywordRef.current = null;
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+ handleSearch(trimmedKeyword, app, (matchItems, index) => {
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+ setSearchMatches({
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+ nonce: randomInteger(),
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+ items: matchItems,
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+ });
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+ setFocusIndex(index);
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+ searchedKeywordRef.current = trimmedKeyword;
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+ lastSceneNonceRef.current = app.scene.getSceneNonce();
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+ setAppState({
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+ searchMatches: matchItems.map((searchMatch) => ({
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+ id: searchMatch.textElement.id,
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+ focus: false,
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+ matchedLines: searchMatch.matchedLines,
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+ })),
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+ });
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+ });
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+ }
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+ }, [
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+ keyword,
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+ elementsMap,
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+ app,
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+ setAppState,
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+ setFocusIndex,
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+ lastSceneNonceRef,
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+ ]);
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+
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+ const goToNextItem = () => {
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+ if (searchMatches.items.length > 0) {
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+ setFocusIndex((focusIndex) => {
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+ if (focusIndex === null) {
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+ return 0;
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+ }
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+
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+ return (focusIndex + 1) % searchMatches.items.length;
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+ });
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+ }
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+ };
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+
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+ const goToPreviousItem = () => {
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+ if (searchMatches.items.length > 0) {
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+ setFocusIndex((focusIndex) => {
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+ if (focusIndex === null) {
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+ return 0;
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+ }
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+
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+ return focusIndex - 1 < 0
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+ ? searchMatches.items.length - 1
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+ : focusIndex - 1;
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+ });
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+ }
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+ };
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+
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+ useEffect(() => {
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+ if (searchMatches.items.length > 0 && focusIndex !== null) {
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+ const match = searchMatches.items[focusIndex];
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+
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+ if (match) {
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+ const matchAsElement = newTextElement({
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+ text: match.keyword,
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+ x: match.textElement.x + (match.matchedLines[0]?.offsetX ?? 0),
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+ y: match.textElement.y + (match.matchedLines[0]?.offsetY ?? 0),
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+ width: match.matchedLines[0]?.width,
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+ height: match.matchedLines[0]?.height,
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+ });
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+
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+ if (
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+ !isElementCompletelyInViewport(
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+ [matchAsElement],
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+ app.canvas.width / window.devicePixelRatio,
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+ app.canvas.height / window.devicePixelRatio,
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+ {
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+ offsetLeft: app.state.offsetLeft,
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+ offsetTop: app.state.offsetTop,
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+ scrollX: app.state.scrollX,
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+ scrollY: app.state.scrollY,
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+ zoom: app.state.zoom,
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+ },
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+ app.scene.getNonDeletedElementsMap(),
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+ app.getEditorUIOffsets(),
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+ )
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+ ) {
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+ app.scrollToContent(matchAsElement, {
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+ fitToContent: true,
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+ animate: true,
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+ duration: 300,
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+ });
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+ }
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+
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+ const nextMatches = searchMatches.items.map((match, index) => {
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+ if (index === focusIndex) {
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+ return {
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+ id: match.textElement.id,
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+ focus: true,
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+ matchedLines: match.matchedLines,
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+ };
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+ }
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+ return {
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+ id: match.textElement.id,
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+ focus: false,
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+ matchedLines: match.matchedLines,
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+ };
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+ });
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+
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+ setAppState({
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+ searchMatches: nextMatches,
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+ });
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+ }
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+ }
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+ }, [app, focusIndex, searchMatches, setAppState]);
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+
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+ useEffect(() => {
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+ return () => {
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+ setFocusIndex(null);
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+ searchedKeywordRef.current = null;
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+ lastSceneNonceRef.current = undefined;
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+ setAppState({
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+ searchMatches: [],
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+ });
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+ };
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+ }, [setAppState, setFocusIndex]);
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+
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+ const stableState = useStable({
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+ goToNextItem,
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+ goToPreviousItem,
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+ searchMatches,
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+ });
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+
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+ useEffect(() => {
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+ const eventHandler = (event: KeyboardEvent) => {
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+ if (
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+ event.key === KEYS.ESCAPE &&
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+ !app.state.openDialog &&
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+ !app.state.openPopup
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+ ) {
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+ event.preventDefault();
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+ event.stopPropagation();
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+ setAppState({
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+ openSidebar: null,
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+ });
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+ return;
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+ }
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+
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+ if (event[KEYS.CTRL_OR_CMD] && event.key === KEYS.F) {
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+ event.preventDefault();
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+ event.stopPropagation();
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+
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+ if (!searchInputRef.current?.matches(":focus")) {
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+ if (app.state.openDialog) {
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+ setAppState({
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+ openDialog: null,
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+ });
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+ }
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+ searchInputRef.current?.focus();
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+ } else {
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+ setAppState({
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+ openSidebar: null,
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+ });
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+ }
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+ }
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+
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+ if (
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+ event.target instanceof HTMLElement &&
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+ event.target.closest(".layer-ui__search")
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+ ) {
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+ if (stableState.searchMatches.items.length) {
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+ if (event.key === KEYS.ENTER) {
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+ event.stopPropagation();
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+ stableState.goToNextItem();
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+ }
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+
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+ if (event.key === KEYS.ARROW_UP) {
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+ event.stopPropagation();
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+ stableState.goToPreviousItem();
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+ } else if (event.key === KEYS.ARROW_DOWN) {
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+ event.stopPropagation();
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+ stableState.goToNextItem();
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+ }
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+ }
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+ }
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+ };
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+
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+ // `capture` needed to prevent firing on initial open from App.tsx,
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+ // as well as to handle events before App ones
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+ return addEventListener(window, EVENT.KEYDOWN, eventHandler, {
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+ capture: true,
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+ });
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+ }, [setAppState, stableState, app]);
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+
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+ /**
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+ * NOTE:
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+ *
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+ * for testing purposes, we're manually focusing instead of
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+ * setting `selectOnRender` on <TextField>
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+ */
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+ useEffect(() => {
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+ searchInputRef.current?.focus();
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+ }, []);
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+
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+ const matchCount = `${searchMatches.items.length} ${
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+ searchMatches.items.length === 1
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+ ? t("search.singleResult")
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+ : t("search.multipleResults")
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+ }`;
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+
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+ return (
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+ <div className="layer-ui__search">
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+ <div className="layer-ui__search-header">
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+ <TextField
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+ className={CLASSES.SEARCH_MENU_INPUT_WRAPPER}
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+ value={keyword}
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+ ref={searchInputRef}
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+ placeholder={t("search.placeholder")}
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+ icon={searchIcon}
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+ onChange={(value) => {
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+ setKeyword(value);
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+ }}
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+ />
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+ </div>
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+
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+ <div className="layer-ui__search-count">
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+ {searchMatches.items.length > 0 && (
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+ <>
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+ {focusIndex !== null && focusIndex > -1 ? (
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+ <div>
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+ {focusIndex + 1} / {matchCount}
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+ </div>
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+ ) : (
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+ <div>{matchCount}</div>
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+ )}
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+ <div className="result-nav">
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+ <Button
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+ onSelect={() => {
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+ goToNextItem();
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+ }}
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+ className="result-nav-btn"
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+ >
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+ {collapseDownIcon}
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+ </Button>
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+ <Button
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+ onSelect={() => {
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+ goToPreviousItem();
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+ }}
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+ className="result-nav-btn"
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+ >
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+ {upIcon}
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+ </Button>
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+ </div>
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+ </>
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+ )}
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+
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+ {searchMatches.items.length === 0 &&
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+ keyword &&
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+ searchedKeywordRef.current && (
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+ <div style={{ margin: "1rem auto" }}>{t("search.noMatch")}</div>
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+ )}
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+ </div>
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+
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+ <MatchList
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+ matches={searchMatches}
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+ onItemClick={setFocusIndex}
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+ focusIndex={focusIndex}
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+ trimmedKeyword={keyword.trim()}
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+ />
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+ </div>
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+ );
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+};
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+
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+const ListItem = (props: {
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+ preview: SearchMatchItem["preview"];
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+ trimmedKeyword: string;
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+ highlighted: boolean;
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+ onClick?: () => void;
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+}) => {
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+ const preview = [
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+ props.preview.moreBefore ? "..." : "",
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+ props.preview.previewText.slice(0, props.preview.indexInKeyword),
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+ props.preview.previewText.slice(
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+ props.preview.indexInKeyword,
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+ props.preview.indexInKeyword + props.trimmedKeyword.length,
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+ ),
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+ props.preview.previewText.slice(
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+ props.preview.indexInKeyword + props.trimmedKeyword.length,
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+ ),
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+ props.preview.moreAfter ? "..." : "",
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+ ];
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+
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+ return (
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+ <div
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+ tabIndex={-1}
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+ className={clsx("layer-ui__result-item", {
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+ active: props.highlighted,
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+ })}
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+ onClick={props.onClick}
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+ ref={(ref) => {
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+ if (props.highlighted) {
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+ ref?.scrollIntoView({ behavior: "auto", block: "nearest" });
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+ }
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+ }}
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+ >
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+ <div className="preview-text">
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+ {preview.flatMap((text, idx) => (
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+ <Fragment key={idx}>{idx === 2 ? <b>{text}</b> : text}</Fragment>
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+ ))}
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+ </div>
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+ </div>
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+ );
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+};
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+
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+interface MatchListProps {
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+ matches: SearchMatches;
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+ onItemClick: (index: number) => void;
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+ focusIndex: number | null;
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+ trimmedKeyword: string;
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+}
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+
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+const MatchListBase = (props: MatchListProps) => {
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+ return (
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+ <div className="layer-ui__search-result-container">
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+ {props.matches.items.map((searchMatch, index) => (
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+ <ListItem
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+ key={searchMatch.textElement.id + searchMatch.index}
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+ trimmedKeyword={props.trimmedKeyword}
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+ preview={searchMatch.preview}
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+ highlighted={index === props.focusIndex}
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+ onClick={() => props.onItemClick(index)}
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+ />
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+ ))}
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+ </div>
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+ );
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+};
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+
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+const areEqual = (prevProps: MatchListProps, nextProps: MatchListProps) => {
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+ return (
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+ prevProps.matches.nonce === nextProps.matches.nonce &&
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+ prevProps.focusIndex === nextProps.focusIndex
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+ );
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+};
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+
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+const MatchList = memo(MatchListBase, areEqual);
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+
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+const getMatchPreview = (text: string, index: number, keyword: string) => {
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+ const WORDS_BEFORE = 2;
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+ const WORDS_AFTER = 5;
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+
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+ const substrBeforeKeyword = text.slice(0, index);
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+ const wordsBeforeKeyword = substrBeforeKeyword.split(/\s+/);
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+ // text = "small", keyword = "mall", not complete before
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+ // text = "small", keyword = "smal", complete before
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+ const isKeywordCompleteBefore = substrBeforeKeyword.endsWith(" ");
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+ const startWordIndex =
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+ wordsBeforeKeyword.length -
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+ WORDS_BEFORE -
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+ 1 -
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+ (isKeywordCompleteBefore ? 0 : 1);
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+ let wordsBeforeAsString =
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+ wordsBeforeKeyword
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+ .slice(startWordIndex <= 0 ? 0 : startWordIndex)
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+ .join(" ") + (isKeywordCompleteBefore ? " " : "");
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+
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+ const MAX_ALLOWED_CHARS = 20;
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+
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+ wordsBeforeAsString =
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+ wordsBeforeAsString.length > MAX_ALLOWED_CHARS
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+ ? wordsBeforeAsString.slice(-MAX_ALLOWED_CHARS)
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+ : wordsBeforeAsString;
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+
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+ const substrAfterKeyword = text.slice(index + keyword.length);
|
|
|
+ const wordsAfter = substrAfterKeyword.split(/\s+/);
|
|
|
+ // text = "small", keyword = "mall", complete after
|
|
|
+ // text = "small", keyword = "smal", not complete after
|
|
|
+ const isKeywordCompleteAfter = !substrAfterKeyword.startsWith(" ");
|
|
|
+ const numberOfWordsToTake = isKeywordCompleteAfter
|
|
|
+ ? WORDS_AFTER + 1
|
|
|
+ : WORDS_AFTER;
|
|
|
+ const wordsAfterAsString =
|
|
|
+ (isKeywordCompleteAfter ? "" : " ") +
|
|
|
+ wordsAfter.slice(0, numberOfWordsToTake).join(" ");
|
|
|
+
|
|
|
+ return {
|
|
|
+ indexInKeyword: wordsBeforeAsString.length,
|
|
|
+ previewText: wordsBeforeAsString + keyword + wordsAfterAsString,
|
|
|
+ moreBefore: startWordIndex > 0,
|
|
|
+ moreAfter: wordsAfter.length > numberOfWordsToTake,
|
|
|
+ };
|
|
|
+};
|
|
|
+
|
|
|
+const normalizeWrappedText = (
|
|
|
+ wrappedText: string,
|
|
|
+ originalText: string,
|
|
|
+): string => {
|
|
|
+ const wrappedLines = wrappedText.split("\n");
|
|
|
+ const normalizedLines: string[] = [];
|
|
|
+ let originalIndex = 0;
|
|
|
+
|
|
|
+ for (let i = 0; i < wrappedLines.length; i++) {
|
|
|
+ let currentLine = wrappedLines[i];
|
|
|
+ const nextLine = wrappedLines[i + 1];
|
|
|
+
|
|
|
+ if (nextLine) {
|
|
|
+ const nextLineIndexInOriginal = originalText.indexOf(
|
|
|
+ nextLine,
|
|
|
+ originalIndex,
|
|
|
+ );
|
|
|
+
|
|
|
+ if (nextLineIndexInOriginal > currentLine.length + originalIndex) {
|
|
|
+ let j = nextLineIndexInOriginal - (currentLine.length + originalIndex);
|
|
|
+
|
|
|
+ while (j > 0) {
|
|
|
+ currentLine += " ";
|
|
|
+ j--;
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ normalizedLines.push(currentLine);
|
|
|
+ originalIndex = originalIndex + currentLine.length;
|
|
|
+ }
|
|
|
+
|
|
|
+ return normalizedLines.join("\n");
|
|
|
+};
|
|
|
+
|
|
|
+const getMatchedLines = (
|
|
|
+ textElement: ExcalidrawTextElement,
|
|
|
+ keyword: string,
|
|
|
+ index: number,
|
|
|
+) => {
|
|
|
+ const normalizedText = normalizeWrappedText(
|
|
|
+ textElement.text,
|
|
|
+ textElement.originalText,
|
|
|
+ );
|
|
|
+
|
|
|
+ const lines = normalizedText.split("\n");
|
|
|
+
|
|
|
+ const lineIndexRanges = [];
|
|
|
+ let currentIndex = 0;
|
|
|
+ let lineNumber = 0;
|
|
|
+
|
|
|
+ for (const line of lines) {
|
|
|
+ const startIndex = currentIndex;
|
|
|
+ const endIndex = startIndex + line.length - 1;
|
|
|
+
|
|
|
+ lineIndexRanges.push({
|
|
|
+ line,
|
|
|
+ startIndex,
|
|
|
+ endIndex,
|
|
|
+ lineNumber,
|
|
|
+ });
|
|
|
+
|
|
|
+ // Move to the next line's start index
|
|
|
+ currentIndex = endIndex + 1;
|
|
|
+ lineNumber++;
|
|
|
+ }
|
|
|
+
|
|
|
+ let startIndex = index;
|
|
|
+ let remainingKeyword = textElement.originalText.slice(
|
|
|
+ index,
|
|
|
+ index + keyword.length,
|
|
|
+ );
|
|
|
+ const matchedLines: {
|
|
|
+ offsetX: number;
|
|
|
+ offsetY: number;
|
|
|
+ width: number;
|
|
|
+ height: number;
|
|
|
+ }[] = [];
|
|
|
+
|
|
|
+ for (const lineIndexRange of lineIndexRanges) {
|
|
|
+ if (remainingKeyword === "") {
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (
|
|
|
+ startIndex >= lineIndexRange.startIndex &&
|
|
|
+ startIndex <= lineIndexRange.endIndex
|
|
|
+ ) {
|
|
|
+ const matchCapacity = lineIndexRange.endIndex + 1 - startIndex;
|
|
|
+ const textToStart = lineIndexRange.line.slice(
|
|
|
+ 0,
|
|
|
+ startIndex - lineIndexRange.startIndex,
|
|
|
+ );
|
|
|
+
|
|
|
+ const matchedWord = remainingKeyword.slice(0, matchCapacity);
|
|
|
+ remainingKeyword = remainingKeyword.slice(matchCapacity);
|
|
|
+
|
|
|
+ const offset = measureText(
|
|
|
+ textToStart,
|
|
|
+ getFontString(textElement),
|
|
|
+ textElement.lineHeight,
|
|
|
+ true,
|
|
|
+ );
|
|
|
+
|
|
|
+ // measureText returns a non-zero width for the empty string
|
|
|
+ // which is not what we're after here, hence the check and the correction
|
|
|
+ if (textToStart === "") {
|
|
|
+ offset.width = 0;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (textElement.textAlign !== "left" && lineIndexRange.line.length > 0) {
|
|
|
+ const lineLength = measureText(
|
|
|
+ lineIndexRange.line,
|
|
|
+ getFontString(textElement),
|
|
|
+ textElement.lineHeight,
|
|
|
+ true,
|
|
|
+ );
|
|
|
+
|
|
|
+ const spaceToStart =
|
|
|
+ textElement.textAlign === "center"
|
|
|
+ ? (textElement.width - lineLength.width) / 2
|
|
|
+ : textElement.width - lineLength.width;
|
|
|
+ offset.width += spaceToStart;
|
|
|
+ }
|
|
|
+
|
|
|
+ const { width, height } = measureText(
|
|
|
+ matchedWord,
|
|
|
+ getFontString(textElement),
|
|
|
+ textElement.lineHeight,
|
|
|
+ );
|
|
|
+
|
|
|
+ const offsetX = offset.width;
|
|
|
+ const offsetY = lineIndexRange.lineNumber * offset.height;
|
|
|
+
|
|
|
+ matchedLines.push({
|
|
|
+ offsetX,
|
|
|
+ offsetY,
|
|
|
+ width,
|
|
|
+ height,
|
|
|
+ });
|
|
|
+
|
|
|
+ startIndex += matchCapacity;
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ return matchedLines;
|
|
|
+};
|
|
|
+
|
|
|
+const escapeSpecialCharacters = (string: string) => {
|
|
|
+ return string.replace(/[.*+?^${}()|[\]\\-]/g, "\\$&");
|
|
|
+};
|
|
|
+
|
|
|
+const handleSearch = debounce(
|
|
|
+ (
|
|
|
+ keyword: string,
|
|
|
+ app: AppClassProperties,
|
|
|
+ cb: (matchItems: SearchMatchItem[], focusIndex: number | null) => void,
|
|
|
+ ) => {
|
|
|
+ if (!keyword || keyword === "") {
|
|
|
+ cb([], null);
|
|
|
+ return;
|
|
|
+ }
|
|
|
+
|
|
|
+ const elements = app.scene.getNonDeletedElements();
|
|
|
+ const texts = elements.filter((el) =>
|
|
|
+ isTextElement(el),
|
|
|
+ ) as ExcalidrawTextElement[];
|
|
|
+
|
|
|
+ texts.sort((a, b) => a.y - b.y);
|
|
|
+
|
|
|
+ const matchItems: SearchMatchItem[] = [];
|
|
|
+
|
|
|
+ const regex = new RegExp(escapeSpecialCharacters(keyword), "gi");
|
|
|
+
|
|
|
+ for (const textEl of texts) {
|
|
|
+ let match = null;
|
|
|
+ const text = textEl.originalText;
|
|
|
+
|
|
|
+ while ((match = regex.exec(text)) !== null) {
|
|
|
+ const preview = getMatchPreview(text, match.index, keyword);
|
|
|
+ const matchedLines = getMatchedLines(textEl, keyword, match.index);
|
|
|
+
|
|
|
+ if (matchedLines.length > 0) {
|
|
|
+ matchItems.push({
|
|
|
+ textElement: textEl,
|
|
|
+ keyword,
|
|
|
+ preview,
|
|
|
+ index: match.index,
|
|
|
+ matchedLines,
|
|
|
+ });
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ const visibleIds = new Set(
|
|
|
+ app.visibleElements.map((visibleElement) => visibleElement.id),
|
|
|
+ );
|
|
|
+
|
|
|
+ const focusIndex =
|
|
|
+ matchItems.findIndex((matchItem) =>
|
|
|
+ visibleIds.has(matchItem.textElement.id),
|
|
|
+ ) ?? null;
|
|
|
+
|
|
|
+ cb(matchItems, focusIndex);
|
|
|
+ },
|
|
|
+ SEARCH_DEBOUNCE,
|
|
|
+);
|