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393 lines
16 KiB
TypeScript
393 lines
16 KiB
TypeScript
/**
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* Widget: Show highlighted text in the right pane
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*
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* By design, there's no support for nonsensical or malformed constructs:
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* - For example, if there is a formula in the middle of the highlighted text, the two ends of the formula will be regarded as two entries
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*/
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import { t } from "../services/i18n.js";
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import attributeService from "../services/attributes.js";
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import RightPanelWidget from "./right_panel_widget.js";
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import options from "../services/options.js";
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import OnClickButtonWidget from "./buttons/onclick_button.js";
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import appContext, { type EventData } from "../components/app_context.js";
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import type FNote from "../entities/fnote.js";
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import katex from "../services/math.js";
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const TPL = /*html*/`<div class="highlights-list-widget">
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<style>
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.highlights-list-widget {
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padding: 10px;
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contain: none;
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overflow: auto;
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position: relative;
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}
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.highlights-list > ol {
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padding-left: 20px;
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}
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.highlights-list li {
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cursor: pointer;
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margin-bottom: 3px;
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text-align: justify;
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word-wrap: break-word;
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hyphens: auto;
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}
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.highlights-list li:hover {
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font-weight: bold;
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}
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</style>
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<span class="highlights-list"></span>
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</div>`;
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export default class HighlightsListWidget extends RightPanelWidget {
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private $highlightsList!: JQuery<HTMLElement>;
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get widgetTitle() {
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return t("highlights_list_2.title");
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}
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get widgetButtons() {
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return [
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new OnClickButtonWidget()
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.icon("bx-cog")
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.title(t("highlights_list_2.options"))
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.titlePlacement("left")
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.onClick(() => appContext.tabManager.openContextWithNote("_optionsTextNotes", { activate: true }))
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.class("icon-action"),
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new OnClickButtonWidget()
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.icon("bx-x")
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.titlePlacement("left")
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.onClick((widget: OnClickButtonWidget) => widget.triggerCommand("closeHlt"))
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.class("icon-action")
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];
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}
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isEnabled() {
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return (
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super.isEnabled() && this.note != null && this.note.type === "text" && !this.noteContext?.viewScope?.highlightsListTemporarilyHidden && this.noteContext?.viewScope?.viewMode === "default"
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);
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}
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async doRenderBody() {
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this.$body.empty().append($(TPL));
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this.$highlightsList = this.$body.find(".highlights-list");
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}
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async refreshWithNote(note: FNote | null | undefined) {
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/* The reason for adding highlightsListPreviousVisible is to record whether the previous state
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of the highlightsList is hidden or displayed, and then let it be displayed/hidden at the initial time.
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If there is no such value, when the right panel needs to display toc but not highlighttext,
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every time the note content is changed, highlighttext Widget will appear and then close immediately,
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because getHlt function will consume time */
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if (this.noteContext?.viewScope?.highlightsListPreviousVisible) {
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this.toggleInt(true);
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} else {
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this.toggleInt(false);
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}
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const optionsHighlightsList = JSON.parse(options.get("highlightsList"));
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if (note?.isLabelTruthy("hideHighlightWidget") || !optionsHighlightsList.length) {
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this.toggleInt(false);
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this.triggerCommand("reEvaluateRightPaneVisibility");
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return;
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}
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let $highlightsList: JQuery<HTMLElement> | null = null;
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let hlLiCount = -1;
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// Check for type text unconditionally in case alwaysShowWidget is set
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if (note && this.note?.type === "text") {
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const noteComplement = await note.getNoteComplement();
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if (noteComplement && "content" in noteComplement) {
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({ $highlightsList, hlLiCount } = await this.getHighlightList(noteComplement.content, optionsHighlightsList));
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}
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}
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this.$highlightsList.empty();
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if ($highlightsList) {
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this.$highlightsList.append($highlightsList);
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}
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if (hlLiCount > 0) {
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this.toggleInt(true);
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if (this.noteContext?.viewScope) {
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this.noteContext.viewScope.highlightsListPreviousVisible = true;
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}
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} else {
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this.toggleInt(false);
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if (this.noteContext?.viewScope) {
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this.noteContext.viewScope.highlightsListPreviousVisible = false;
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}
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}
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this.triggerCommand("reEvaluateRightPaneVisibility");
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}
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extractOuterTag(htmlStr: string | null) {
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if (htmlStr === null) {
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return null;
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}
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// Regular expressions that match only the outermost tag
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const regex = /^<([a-zA-Z]+)([^>]*)>/;
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const match = htmlStr.match(regex);
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if (match) {
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const tagName = match[1].toLowerCase(); // Extract tag name
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const attributes = match[2].trim(); // Extract label attributes
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return { tagName, attributes };
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}
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return null;
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}
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areOuterTagsConsistent(str1: string | null, str2: string | null) {
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const tag1 = this.extractOuterTag(str1);
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const tag2 = this.extractOuterTag(str2);
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// If one of them has no label, returns false
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if (!tag1 || !tag2) {
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return false;
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}
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// Compare tag names and attributes to see if they are the same
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return tag1.tagName === tag2.tagName && tag1.attributes === tag2.attributes;
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}
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/**
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* Rendering formulas in strings using katex
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*
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* @param html Note's html content
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* @returns The HTML content with mathematical formulas rendered by KaTeX.
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*/
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async replaceMathTextWithKatax(html: string) {
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const mathTextRegex = /<span class="math-tex">\\\(([\s\S]*?)\\\)<\/span>/g;
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var matches = [...html.matchAll(mathTextRegex)];
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let modifiedText = html;
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if (matches.length > 0) {
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// Process all matches asynchronously
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for (const match of matches) {
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let latexCode = match[1];
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let rendered;
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try {
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rendered = katex.renderToString(latexCode, {
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throwOnError: false
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});
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} catch (e) {
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if (e instanceof ReferenceError && e.message.includes("katex is not defined")) {
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// Load KaTeX if it is not already loaded
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try {
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rendered = katex.renderToString(latexCode, {
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throwOnError: false
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});
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} catch (renderError) {
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console.error("KaTeX rendering error after loading library:", renderError);
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rendered = match[0]; // Fall back to original if error persists
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}
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} else {
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console.error("KaTeX rendering error:", e);
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rendered = match[0]; // Fall back to original on error
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}
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}
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// Replace the matched formula in the modified text
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modifiedText = modifiedText.replace(match[0], rendered);
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}
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}
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return modifiedText;
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}
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async getHighlightList(content: string, optionsHighlightsList: string[]) {
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// matches a span containing background-color
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const regex1 = /<span[^>]*style\s*=\s*[^>]*background-color:[^>]*?>[\s\S]*?<\/span>/gi;
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// matches a span containing color
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const regex2 = /<span[^>]*style\s*=\s*[^>]*[^-]color:[^>]*?>[\s\S]*?<\/span>/gi;
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// match italics
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const regex3 = /(<i>[\s\S]*?<\/i>|<em>[\s\S]*?<\/em>)/gi;
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// match bold
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const regex4 = /<strong>[\s\S]*?<\/strong>/gi;
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// match underline
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const regex5 = /<u>[\s\S]*?<\/u>/g;
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// Possible values in optionsHighlightsList： '["bold","italic","underline","color","bgColor"]'
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// element priority： span>i>strong>u
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let findSubStr = "",
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combinedRegexStr = "";
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if (optionsHighlightsList.includes("bgColor")) {
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findSubStr += `,span[style*="background-color"]:not(section.include-note span[style*="background-color"])`;
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combinedRegexStr += `|${regex1.source}`;
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}
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if (optionsHighlightsList.includes("color")) {
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findSubStr += `,span[style*="color"]:not(section.include-note span[style*="color"])`;
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combinedRegexStr += `|${regex2.source}`;
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}
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if (optionsHighlightsList.includes("italic")) {
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findSubStr += `,i:not(section.include-note i)`;
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findSubStr += `,em:not(section.include-note em)`;
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combinedRegexStr += `|${regex3.source}`;
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}
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if (optionsHighlightsList.includes("bold")) {
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findSubStr += `,strong:not(section.include-note strong)`;
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combinedRegexStr += `|${regex4.source}`;
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}
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if (optionsHighlightsList.includes("underline")) {
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findSubStr += `,u:not(section.include-note u)`;
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combinedRegexStr += `|${regex5.source}`;
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}
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findSubStr = findSubStr.substring(1);
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combinedRegexStr = `(` + combinedRegexStr.substring(1) + `)`;
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const combinedRegex = new RegExp(combinedRegexStr, "gi");
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const $highlightsList = $("<ol>");
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let prevEndIndex = -1,
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hlLiCount = 0;
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let prevSubHtml: string | null = null;
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// Used to determine if a string is only a formula
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const onlyMathRegex = /^<span class="math-tex">\\\([^\)]*?\)<\/span>(?:<span class="math-tex">\\\([^\)]*?\)<\/span>)*$/;
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for (let match: RegExpMatchArray | null = null, hltIndex = 0; (match = combinedRegex.exec(content)) !== null; hltIndex++) {
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const subHtml = match[0];
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const startIndex = match.index;
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const endIndex = combinedRegex.lastIndex;
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// Ignore footnotes.
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if (subHtml.startsWith('<strong><a href="#fnref')) {
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continue;
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}
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if (prevEndIndex !== -1 && startIndex === prevEndIndex) {
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// If the previous element is connected to this element in HTML, then concatenate them into one.
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$highlightsList.children().last().append(subHtml);
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} else {
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// TODO: can't be done with $(subHtml).text()?
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//Can’t remember why regular expressions are used here, but modified to $(subHtml).text() works as expected
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//const hasText = [...subHtml.matchAll(/(?<=^|>)[^><]+?(?=<|$)/g)].map(matchTmp => matchTmp[0]).join('').trim();
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const hasText = $(subHtml).text().trim();
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if (hasText) {
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const substring = content.substring(prevEndIndex, startIndex);
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//If the two elements have the same style and there are only formulas in between, append the formulas and the current element to the end of the previous element.
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if (this.areOuterTagsConsistent(prevSubHtml, subHtml) && onlyMathRegex.test(substring)) {
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const $lastLi = $highlightsList.children("li").last();
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$lastLi.append(await this.replaceMathTextWithKatax(substring));
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$lastLi.append(subHtml);
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} else {
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$highlightsList.append(
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$("<li>")
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.html(subHtml)
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.on("click", () => this.jumpToHighlightsList(findSubStr, hltIndex))
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);
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}
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hlLiCount++;
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} else {
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// hide li if its text content is empty
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continue;
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}
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}
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prevEndIndex = endIndex;
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prevSubHtml = subHtml;
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}
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return {
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$highlightsList,
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hlLiCount,
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findSubStr
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};
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}
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async jumpToHighlightsList(findSubStr: string, itemIndex: number) {
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if (!this.noteContext) {
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return;
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}
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const isReadOnly = await this.noteContext.isReadOnly();
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let targetElement;
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if (isReadOnly) {
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const $container = await this.noteContext.getContentElement();
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targetElement = $container
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.find(findSubStr)
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.filter(function () {
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if (findSubStr.indexOf("color") >= 0 && findSubStr.indexOf("background-color") < 0) {
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let color = this.style.color;
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const $el = $(this as HTMLElement);
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return !($el.prop("tagName") === "SPAN" && color === "");
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} else {
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return true;
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}
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})
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.filter(function () {
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const $el = $(this as HTMLElement);
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return (
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$el.parent(findSubStr).length === 0 &&
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$el.parent().parent(findSubStr).length === 0 &&
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$el.parent().parent().parent(findSubStr).length === 0 &&
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$el.parent().parent().parent().parent(findSubStr).length === 0
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);
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});
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} else {
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const textEditor = await this.noteContext.getTextEditor();
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const el = textEditor?.editing.view.domRoots.values().next().value;
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if (el) {
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targetElement = $(el)
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.find(findSubStr)
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.filter(function () {
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// When finding span[style*="color"] but not looking for span[style*="background-color"],
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// the background-color error will be regarded as color, so it needs to be filtered
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const $el = $(this as HTMLElement);
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if (findSubStr.indexOf("color") >= 0 && findSubStr.indexOf("background-color") < 0) {
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let color = this.style.color;
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return !($el.prop("tagName") === "SPAN" && color === "");
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} else {
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return true;
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}
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})
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.filter(function () {
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// Need to filter out the child elements of the element that has been found
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const $el = $(this as HTMLElement);
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return (
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$el.parent(findSubStr).length === 0 &&
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$el.parent().parent(findSubStr).length === 0 &&
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$el.parent().parent().parent(findSubStr).length === 0 &&
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$el.parent().parent().parent().parent(findSubStr).length === 0
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);
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});
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}
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}
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if (targetElement && targetElement[itemIndex]) {
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targetElement[itemIndex].scrollIntoView({
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behavior: "smooth",
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block: "center"
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});
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} else {
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console.warn("Unable to find the target element in the highlights list.");
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}
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}
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async closeHltCommand() {
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if (this.noteContext?.viewScope) {
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this.noteContext.viewScope.highlightsListTemporarilyHidden = true;
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}
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await this.refresh();
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this.triggerCommand("reEvaluateRightPaneVisibility");
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appContext.triggerEvent("reEvaluateHighlightsListWidgetVisibility", { noteId: this.noteId });
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}
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async showHighlightsListWidgetEvent({ noteId }: EventData<"showHighlightsListWidget">) {
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if (this.noteId === noteId) {
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await this.refresh();
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this.triggerCommand("reEvaluateRightPaneVisibility");
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}
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}
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async entitiesReloadedEvent({ loadResults }: EventData<"entitiesReloaded">) {
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if (this.noteId && loadResults.isNoteContentReloaded(this.noteId)) {
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await this.refresh();
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} else if (
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loadResults
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.getAttributeRows()
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.find((attr) => attr.type === "label" && (attr.name?.toLowerCase().includes("readonly") || attr.name === "hideHighlightWidget") && attributeService.isAffecting(attr, this.note))
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) {
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await this.refresh();
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}
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}
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}
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