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Enable code blocks copying Ref: https://aaronluna.dev/blog/add-copy-button-to-code-blocks-hugo-chroma/ Supersedes #5235 Signed-off-by: Noel Georgi <git@frezbo.dev>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,7 @@ | ||
| <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@docsearch/css@3"/> | ||
| <link rel="stylesheet" type="text/css" href="/asciinema/asciinema-player.css" /> | ||
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| <!--- https://aaronluna.dev/blog/add-copy-button-to-code-blocks-hugo-chroma/ --> | ||
| {{ if (findRE "<pre" .Content 1) }} | ||
| <link rel="stylesheet" href="/css/clipboard.css"> | ||
| {{ end }} |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| .highlight-wrapper { | ||
| display: block; | ||
| } | ||
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| .highlight { | ||
| position: relative; | ||
| z-index: 0; | ||
| padding: 0; | ||
| margin: 0; | ||
| border-radius: 4px; | ||
| } | ||
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| code[data-lang]:before { | ||
| color: #d0d0d0; | ||
| background-color: #002b36; | ||
| position: absolute; | ||
| z-index: 0; | ||
| top: -22px; | ||
| left: 0px; | ||
| content: attr(data-lang); | ||
| border-top-left-radius: 4px; | ||
| border-top-right-radius: 4px; | ||
| border-bottom-left-radius: 0; | ||
| border-bottom-right-radius: 0; | ||
| padding: 5px 10px 7px; | ||
| } | ||
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| .copy-code-button { | ||
| position: absolute; | ||
| z-index: 2; | ||
| right: 0; | ||
| top: 0; | ||
| font-size: 13px; | ||
| font-weight: 700; | ||
| line-height: 14px; | ||
| letter-spacing: 0.5px; | ||
| width: 65px; | ||
| color: #232326; | ||
| background-color: #7f7f7f; | ||
| border: 1.25px solid #232326; | ||
| border-top-left-radius: 0; | ||
| border-top-right-radius: 4px; | ||
| border-bottom-right-radius: 0; | ||
| border-bottom-left-radius: 4px; | ||
| white-space: nowrap; | ||
| padding: 4px 4px 5px 4px; | ||
| margin: 0 0 0 1px; | ||
| cursor: pointer; | ||
| opacity: 0.6; | ||
| } | ||
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| .copy-code-button:hover, | ||
| .copy-code-button:focus, | ||
| .copy-code-button:active, | ||
| .copy-code-button:active:hover { | ||
| color: #222225; | ||
| background-color: #b3b3b3; | ||
| opacity: 0.8; | ||
| } | ||
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| .copyable-text-area { | ||
| position: absolute; | ||
| height: 0; | ||
| z-index: -1; | ||
| opacity: .01; | ||
| } | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| function createCopyButton(highlightDiv) { | ||
| const button = document.createElement("button"); | ||
| button.className = "copy-code-button"; | ||
| button.type = "button"; | ||
| button.innerText = "Copy"; | ||
| button.addEventListener("click", () => copyCodeToClipboard(button, highlightDiv)); | ||
| addCopyButtonToDom(button, highlightDiv); | ||
| } | ||
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| async function copyCodeToClipboard(button, highlightDiv) { | ||
| const codeToCopy = highlightDiv.querySelector(":last-child > code").innerText; | ||
| try { | ||
| result = await navigator.permissions.query({ name: "clipboard-write" }); | ||
| if (result.state == "granted" || result.state == "prompt") { | ||
| await navigator.clipboard.writeText(codeToCopy); | ||
| } else { | ||
| copyCodeBlockExecCommand(codeToCopy, highlightDiv); | ||
| } | ||
| } catch (_) { | ||
| copyCodeBlockExecCommand(codeToCopy, highlightDiv); | ||
| } | ||
| finally { | ||
| codeWasCopied(button); | ||
| } | ||
| } | ||
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| function copyCodeBlockExecCommand(codeToCopy, highlightDiv) { | ||
| const textArea = document.createElement("textArea"); | ||
| textArea.contentEditable = 'true' | ||
| textArea.readOnly = 'false' | ||
| textArea.className = "copyable-text-area"; | ||
| textArea.value = codeToCopy; | ||
| highlightDiv.insertBefore(textArea, highlightDiv.firstChild); | ||
| const range = document.createRange() | ||
| range.selectNodeContents(textArea) | ||
| const sel = window.getSelection() | ||
| sel.removeAllRanges() | ||
| sel.addRange(range) | ||
| textArea.setSelectionRange(0, 999999) | ||
| document.execCommand("copy"); | ||
| highlightDiv.removeChild(textArea); | ||
| } | ||
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| function codeWasCopied(button) { | ||
| button.blur(); | ||
| button.innerText = "Copied!"; | ||
| setTimeout(function() { | ||
| button.innerText = "Copy"; | ||
| }, 2000); | ||
| } | ||
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| function addCopyButtonToDom(button, highlightDiv) { | ||
| highlightDiv.insertBefore(button, highlightDiv.firstChild); | ||
| const wrapper = document.createElement("div"); | ||
| wrapper.className = "highlight-wrapper"; | ||
| highlightDiv.parentNode.insertBefore(wrapper, highlightDiv); | ||
| wrapper.appendChild(highlightDiv); | ||
| } | ||
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| document.querySelectorAll(".highlight") | ||
| .forEach(highlightDiv => createCopyButton(highlightDiv)); | ||
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