{"id":27119,"date":"2025-06-15T21:41:41","date_gmt":"2025-06-15T12:41:41","guid":{"rendered":"https:\/\/motoki-design.co.jp\/wordpress\/?p=27119"},"modified":"2026-10-21T22:37:58","modified_gmt":"2026-10-21T13:37:58","slug":"codoc-hcb-highlight-clipboard-fallback","status":"publish","type":"post","link":"https:\/\/motoki-design.co.jp\/wordpress\/codoc-hcb-highlight-clipboard-fallback\/","title":{"rendered":"codoc\u2502\u6709\u6599\u8a18\u4e8b\u30b3\u30f3\u30c6\u30f3\u30c4\u5185\u3067Highlighting Code Block\u3092\u8868\u793a\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">WordPress\u3067\u30b3\u30fc\u30c9\u8868\u793a\u3092\u7f8e\u3057\u304f\u884c\u3046\u300cHighlighting Code Block\uff08HCB\uff09\u300d\u3068\u3001\u8a18\u4e8b\u8ca9\u58f2\u30b5\u30fc\u30d3\u30b9\u300cCodoc\uff08\u30b3\u30fc\u30c9\u30af\uff09\u300d\u3092\u4f75\u7528\u3057\u3066\u3044\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u554f\u984c\u304c\u8d77\u3053\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Codoc\u7d4c\u7531\u3067\u8868\u793a\u3055\u308c\u308b\u8a18\u4e8b\u3067\u3001\u30b3\u30fc\u30c9\u30d6\u30ed\u30c3\u30af\u304c\u30cf\u30a4\u30e9\u30a4\u30c8\u3055\u308c\u306a\u3044<\/strong><\/li>\n\n\n\n<li><strong>\u30b3\u30d4\u30fc\u7528\u306e\u30dc\u30bf\u30f3\u304c\u8868\u793a\u3055\u308c\u306a\u3044<\/strong><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001codoc\u306e\u8868\u793a\u9818\u57df\u306b\u5f8c\u304b\u3089\u8ffd\u52a0\u3055\u308c\u308bHCB\u30d6\u30ed\u30c3\u30af\u3092\u518d\u691c\u67fb\u3057\u3001Prism\u306e\u30cf\u30a4\u30e9\u30a4\u30c8\u3068\u30b3\u30d4\u30fc\u64cd\u4f5c\u3092\u88dc\u3046\u30b3\u30fc\u30c9\u4f8b\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002\u73fe\u5728\u306ecodoc\u3067\u5fc5\u305a\u52d5\u4f5c\u3059\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_info wp-block-paragraph\"><strong>\u521d\u56de\u8868\u793a\u3001\u5f8c\u304b\u3089\u633f\u5165\u3055\u308c\u308b\u30b3\u30fc\u30c9\u3001\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u8aad\u307f\u8fbc\u307f\u9806\u3092\u5206\u3051\u3066\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/strong><br>\u5bfe\u8c61\u306f\u540c\u3058\u30da\u30fc\u30b8\u306eDOM\u5185\u306b\u3042\u308b.codoc-entries\u914d\u4e0b\u306e.hcb_wrap\u3067\u3059\u3002iframe\u3084Shadow DOM\u5185\u3001\u5225\u306e\u30b3\u30f3\u30c6\u30ca\u30fc\u69cb\u9020\u306b\u306f\u305d\u306e\u307e\u307e\u9069\u7528\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">codoc\u306e\u6709\u6599\u8a18\u4e8b\u30b3\u30f3\u30c6\u30f3\u30c4\u5185\u3067Highlighting Code Block\u3092\u8868\u793a\u3059\u308b\u65b9\u6cd5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u65e2\u5b58\u306eHCB\u30b3\u30d4\u30fc\u30dc\u30bf\u30f3\u304c\u3042\u308b\u5834\u5408\u306f\u3001\u305d\u306e\u64cd\u4f5c\u3092\u7dad\u6301\u3057\u307e\u3059\u3002\u30dc\u30bf\u30f3\u304c\u306a\u3044\u5834\u5408\u3060\u3051\u3001\u5225\u306e\u30af\u30e9\u30b9\u540d\u306e\u300c\u30b3\u30fc\u30c9\u3092\u30b3\u30d4\u30fc\u300d\u30dc\u30bf\u30f3\u3092\u8ffd\u52a0\u3057\u3001\u30d6\u30e9\u30a6\u30b6\u30fc\u306eClipboard API\u3092\u4f7f\u3044\u307e\u3059\u3002ClipboardJS\u306e\u4e8c\u91cd\u521d\u671f\u5316\u306f\u884c\u3044\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u3092\u3001<code>functions.php<\/code>\u306b\u8ffd\u8a18\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p class=\"is-style-icon_pen wp-block-paragraph\">\u5b50\u30c6\u30fc\u30de\u307e\u305f\u306fCode Snippets\u306e\u4e00\u65b9\u3060\u3051\u3067\u4f7f\u3044\u3001\u65e7\u7248\u306e\u540c\u7528\u9014\u30b3\u30fc\u30c9\u306f\u505c\u6b62\u3057\u307e\u3059\u3002\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u7528\u610f\u3057\u3001\u691c\u8a3c\u74b0\u5883\u3067\u78ba\u8a8d\u3057\u3066\u304b\u3089\u5c0e\u5165\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8a2d\u7f6e\u30b3\u30fc\u30c9<\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-lang=\"PHP\"><code>add_action('wp_footer', function () {\n    if (!is_singular()) return;\n    ?&gt;\n    &lt;script&gt;\n    (() =&gt; {\n        const init = () =&gt; {\n            if (window.wazaCodocHcbReady) return;\n            window.wazaCodocHcbReady = true;\n            const highlighted = new WeakMap();\n            const controls = new WeakMap();\n            let pending = false;\n            const scan = () =&gt; {\n                pending = false;\n                document.querySelectorAll('.codoc-entries .hcb_wrap').forEach(wrap =&gt; {\n                    const code = wrap.querySelector('pre code');\n                    if (!code) return;\n                    const text = code.textContent;\n                    if (window.Prism &amp;&amp; typeof window.Prism.highlightElement === 'function'\n                        &amp;&amp; highlighted.get(code) !== text) {\n                        try {\n                            window.Prism.highlightElement(code);\n                            highlighted.set(code, code.textContent);\n                        } catch (e) { \/* \u5143\u306e\u30b3\u30fc\u30c9\u8868\u793a\u3092\u6b8b\u3059\u3002\u6b21\u306e\u518d\u691c\u67fb\u3067\u518d\u8a66\u884c\u3059\u308b\u3002 *\/ }\n                    }\n                    let state = controls.get(wrap);\n                    \/\/ HCB\u5074\u306b\u65e2\u5b58\u306e\u30b3\u30d4\u30fc\u64cd\u4f5c\u304c\u3042\u308c\u3070\u8ffd\u52a0\u3057\u306a\u3044\u3002\n                    if (wrap.querySelector('.hcb-clipboard')) {\n                        if (state) { state.button.remove(); state.status.remove(); controls.delete(wrap); }\n                        return;\n                    }\n                    if (state) {\n                        state.code = code;\n                        if (!state.button.isConnected) wrap.appendChild(state.button);\n                        if (!state.status.isConnected) wrap.appendChild(state.status);\n                        return;\n                    }\n                    const button = document.createElement('button');\n                    button.type = 'button';\n                    button.className = 'waza-codoc-copy';\n                    button.textContent = '\u30b3\u30fc\u30c9\u3092\u30b3\u30d4\u30fc';\n                    const status = document.createElement('span');\n                    status.setAttribute('role', 'status');\n                    state = { code, button, status };\n                    controls.set(wrap, state);\n                    button.addEventListener('click', async () =&gt; {\n                        status.textContent = '';\n                        try {\n                            if (!state.code.isConnected || !navigator.clipboard || !navigator.clipboard.writeText) throw new Error('unavailable');\n                            await navigator.clipboard.writeText(state.code.textContent);\n                            status.textContent = ' \u30b3\u30d4\u30fc\u3057\u307e\u3057\u305f\u3002';\n                        } catch (e) {\n                            status.textContent = ' \u30b3\u30d4\u30fc\u3067\u304d\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u30b3\u30fc\u30c9\u3092\u9078\u629e\u3057\u3066\u624b\u52d5\u3067\u30b3\u30d4\u30fc\u3057\u3066\u304f\u3060\u3055\u3044\u3002';\n                        }\n                    });\n                    wrap.append(button, status);\n                });\n            };\n            const schedule = () =&gt; {\n                if (pending) return;\n                pending = true;\n                requestAnimationFrame(scan);\n            };\n            if (typeof MutationObserver !== 'undefined') {\n                new MutationObserver(records =&gt; {\n                    if (records.some(r =&gt; (r.target.parentElement &amp;&amp; r.target.parentElement.closest('.codoc-entries pre code'))\n                        || Array.from(r.addedNodes).some(n =&gt;\n                        n.nodeType === 1 &amp;&amp; (n.matches('.codoc-entries, .hcb_wrap, pre, code, .hcb-clipboard')\n                        || n.querySelector('.codoc-entries, .hcb_wrap, pre, code'))))) schedule();\n                }).observe(document.body, { childList: true, characterData: true, subtree: true });\n            }\n            \/\/ \u5916\u90e8\u30b9\u30af\u30ea\u30d7\u30c8\u306e\u9045\u5ef6\u30ed\u30fc\u30c9\u5f8c\u306b\u3082\u518d\u691c\u67fb\u3002\n            document.addEventListener('load', event =&gt; {\n                if (event.target.tagName === 'SCRIPT') schedule();\n            }, true);\n            window.addEventListener('load', schedule, { once: true });\n            document.addEventListener('waza-codoc-hcb-refresh', schedule);\n            scan();\n        };\n        if (document.readyState === 'loading') document.addEventListener('DOMContentLoaded', init, { once: true });\n        else init();\n    })();\n    &lt;\/script&gt;\n    &lt;?php\n}, 99);\n<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\">\u89e3\u8aac<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>MutationObserver<\/code> \u3092\u4f7f\u3063\u3066\u3001\u5f8c\u304b\u3089\u8ffd\u52a0\u3055\u308c\u308b <code>.hcb_wrap<\/code> \u8981\u7d20\u3092\u691c\u77e5<\/li>\n\n\n\n<li>\u5404 <code>.hcb_wrap<\/code> \u306b\u5bfe\u3057\u3066 Prism.js \u306e\u30b7\u30f3\u30bf\u30c3\u30af\u30b9\u30cf\u30a4\u30e9\u30a4\u30c8\u3092\u9069\u7528<\/li>\n\n\n\n<li>\u65e2\u5b58\u30dc\u30bf\u30f3\u304c\u306a\u3044\u5834\u5408\u3060\u3051\u72ec\u81ea\u306e\u30b3\u30d4\u30fc\u64cd\u4f5c\u3092\u8ffd\u52a0\u3057\u3001\u6210\u529f\u30fb\u5931\u6557\u3092\u30b9\u30c6\u30fc\u30bf\u30b9\u6587\u3067\u4f1d\u3048\u308b<\/li>\n\n\n\n<li><code>WeakMap<\/code> \u3092\u4f7f\u3063\u3066\u3001\u51e6\u7406\u6e08\u307f\u30b3\u30fc\u30c9\u306e\u6587\u5b57\u5217\u3068\u30dc\u30bf\u30f3\u3092\u7ba1\u7406\u3057\u307e\u3059\u3002\u521d\u671f\u8868\u793a\u3082\u8d70\u67fb\u3057\u3001\u5f8c\u304b\u3089code\u8981\u7d20\u304c\u5165\u3063\u305f\u5834\u5408\u3084\u7f6e\u304d\u63db\u308f\u3063\u305f\u5834\u5408\u306b\u518d\u691c\u67fb\u3057\u307e\u3059<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4f7f\u7528\u4e0a\u306e\u6ce8\u610f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8272\u5206\u3051\u306b\u306fPrism\u672c\u4f53\u30fb\u8a00\u8a9e\u5b9a\u7fa9\u3068HCB\u306eCSS\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u306e\u30b3\u30fc\u30c9\u306f\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8aad\u307f\u8fbc\u307f\u307e\u305b\u3093\u3002Prism\u304c\u4f7f\u3048\u306a\u3044\u5834\u5408\u306f\u30b3\u30fc\u30c9\u6587\u5b57\u5217\u3092\u6b8b\u3057\u307e\u3059\u3002\u30b3\u30d4\u30fc\u306fHTTPS\u306a\u3069\u306e\u5b89\u5168\u306a\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3068\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u8a31\u53ef\u304c\u5fc5\u8981\u3067\u3059\u3002<\/li>\n\n\n\n<li><code>Highlighting Code Block<\/code> \u30d7\u30e9\u30b0\u30a4\u30f3\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u524d\u63d0\u3067\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">codoc\u306e\u3088\u3046\u306a\u975e\u540c\u671f\u8aad\u307f\u8fbc\u307f\u3092\u884c\u3046\u30b3\u30f3\u30c6\u30f3\u30c4\u3067\u306f\u3001\u30c6\u30fc\u30de\u3084\u30d7\u30e9\u30b0\u30a4\u30f3\u306e\u521d\u671f\u5316\u30bf\u30a4\u30df\u30f3\u30b0\u304b\u3089\u5916\u308c\u3066JS\u3084CSS\u304c\u52b9\u304b\u306a\u3044\u30d6\u30ed\u30c3\u30af\u304c\u767a\u751f\u3059\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a18\u4e8b\u3067\u7d39\u4ecb\u3057\u3066\u3044\u308b\u30b3\u30fc\u30c9\u306f\u3001GitHub\u306e<a href=\"https:\/\/github.com\/MOTOKI-LLC\/WAZA-code\/tree\/main\/codoc-hcb-highlight-clipboard-fallback\">MOTOKI-LLC\/WAZA-code<\/a>\u306b\u3082\u63b2\u8f09\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u4eca\u56de\u306e\u4fee\u6b63\u3068\u306e\u540c\u671f\u306f\u672a\u78ba\u8a8d\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">2026\u5e7410\u670821\u65e5\u306bPHP\u69cb\u6587\u3068jsdom\u4e0a\u306e\u52d5\u7684\u633f\u5165\u30fb\u521d\u671f\u8868\u793a\u30fb\u30b3\u30fc\u30c9\u5dee\u3057\u66ff\u3048\u30fb\u91cd\u8907\u5b9f\u884c\u30fb\u30b3\u30d4\u30fc\u6210\u529f\/\u5931\u6557\u306e\u6a21\u64ec\u52d5\u4f5c\u3092\u78ba\u8a8d\u3057\u307e\u3057\u305f\u3002\u5b9fcodoc\u306e\u8cfc\u5165\u5f8c\u8868\u793a\u3001Prism\u8a00\u8a9e\u5b9a\u7fa9\u306e\u7d44\u5408\u305b\u3001\u5b9f\u30af\u30ea\u30c3\u30d7\u30dc\u30fc\u30c9\u3001PC\u30b9\u30de\u30db\u30fb\u30ad\u30fc\u30dc\u30fc\u30c9\u30fb\u8aad\u307f\u4e0a\u3052\u306f\u672a\u691c\u8a3c\u3067\u3059\u3002\u30b3\u30fc\u30c9\u6587\u5b57\u5217\u3060\u3051\u3092\u66f8\u304d\u63db\u3048\u308b\u5b9f\u88c5\u306a\u3069\u3067\u518d\u691c\u67fb\u3055\u308c\u306a\u3044\u5834\u5408\u306f\u3001\u8ffd\u52a0\u51e6\u7406\u5074\u304b\u3089document.dispatchEvent(new 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