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Implements missing features of the Codeblock component in NeetoWebsit…
…e custom codeblock component. (#1278) * Updated the codeblock highlight script to inject a copy button to the codeblock. * Updated the codeblock component to render line numbers along with the line. * Cleanedup the codeblock line and code spacing. * Fixed the codeblock usability issues in the editor. * Fixed code block line higlighting not working in the bigbinary website. * Fixed missing line numbers when there was no line highlighting in the EditorContent component. --------- Co-authored-by: Praveen Murali <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
|
|
@@ -4,22 +4,72 @@ import hljs from "highlight.js/lib/common"; | |
| const highlightLinesScriptCDNPath = | ||
| "//cdn.jsdelivr.net/gh/TRSasasusu/[email protected]/highlightjs-highlight-lines.min.js"; | ||
|
|
||
| function applyLineHighlighting(codeElement) { | ||
| hljs.highlightElement(codeElement); | ||
| const preElement = codeElement.closest("pre"); | ||
| const getHighlightedLines = (preNode, codeNode) => { | ||
| const highlightedLines = | ||
| preNode?.getAttribute("data-highlighted-lines") ?? | ||
| codeNode?.getAttribute("data-highlighted-lines"); | ||
|
|
||
| return highlightedLines?.split(",")?.map(Number) ?? [0]; | ||
| }; | ||
|
|
||
| const copyToClipboard = text => { | ||
| try { | ||
| if (navigator.clipboard && window.isSecureContext) { | ||
| navigator.clipboard.writeText(text); | ||
| } else { | ||
| const textArea = document.createElement("textarea"); | ||
| textArea.value = text; | ||
|
|
||
| const highlightedLines = preElement.getAttribute("data-highlighted-lines"); | ||
| if (highlightedLines) { | ||
| const linesToHighlight = highlightedLines.split(",").map(Number); | ||
| const highlightLinesOptions = linesToHighlight | ||
| .filter(line => line > 0) | ||
| .map(line => ({ | ||
| start: line, | ||
| end: line, | ||
| color: "rgba(255, 255, 0, 0.2)", | ||
| })); | ||
| hljs.highlightLinesElement(codeElement, highlightLinesOptions); | ||
| textArea.style.top = "0"; | ||
| textArea.style.left = "0"; | ||
| textArea.style.position = "fixed"; | ||
|
|
||
| document.body.appendChild(textArea); | ||
| textArea.focus(); | ||
| textArea.select(); | ||
|
|
||
| document.execCommand("copy"); | ||
| document.body.removeChild(textArea); | ||
| } | ||
| } catch (error) { | ||
| // eslint-disable-next-line no-console | ||
| console.log(error); | ||
| } | ||
| }; | ||
|
|
||
| const addCopyToClipboardButton = codeElement => { | ||
| const copyButton = document.createElement("button"); | ||
| copyButton.setAttribute( | ||
| "class", | ||
| "text-primary-grey absolute right-3 top-3 text-xs copy-button" | ||
| ); | ||
| copyButton.innerText = "Copy"; | ||
|
|
||
| copyButton.addEventListener("click", () => { | ||
| copyToClipboard(codeElement.textContent?.trim()); | ||
| copyButton.innerText = "Copied"; | ||
| setTimeout(() => { | ||
| copyButton.innerText = "Copy"; | ||
| }, 2500); | ||
| }); | ||
|
|
||
| codeElement.parentNode.appendChild(copyButton); | ||
| }; | ||
|
|
||
| function applyCodeblockDecorations(codeElement) { | ||
| const preElement = codeElement.closest("pre"); | ||
| hljs.highlightElement(codeElement); | ||
| addCopyToClipboardButton(codeElement); | ||
|
|
||
| const linesToHighlight = getHighlightedLines(preElement, codeElement); | ||
| const highlightLinesOptions = linesToHighlight | ||
| .filter(line => line > 0) | ||
| .map(line => ({ | ||
| start: line, | ||
| end: line, | ||
| color: "rgba(255, 255, 0, 0.2)", | ||
| })); | ||
| hljs.highlightLinesElement(codeElement, highlightLinesOptions); | ||
| } | ||
|
|
||
| document.addEventListener("DOMContentLoaded", () => { | ||
|
|
@@ -28,6 +78,6 @@ document.addEventListener("DOMContentLoaded", () => { | |
| script.async = true; | ||
| document.head.appendChild(script); | ||
| script.addEventListener("load", () => { | ||
| document.querySelectorAll("pre code").forEach(applyLineHighlighting); | ||
| document.querySelectorAll("pre code").forEach(applyCodeblockDecorations); | ||
| }); | ||
| }); | ||
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