feat: add native code block feature with Prism highlighting and editor integration
- Implemented custom code block system for frontend and editors - Integrated Prism.js for syntax highlighting (YAML + HTML support) - Added copy-to-clipboard functionality with hover-based UI - Introduced custom Gutenberg block for code input - Added Classic Editor button for quick code insertion - Implemented server-side rendering via the_content filter - Added dedicated styling (code.css) with Dracula-inspired theme - Added editor preview styling (editor.css) for visual consistency - Ensured accessibility and keyboard support for copy button - Optimized asset loading and versioning using filemtime() This feature provides a lightweight, theme-native alternative to external code highlighting plugins.
This commit is contained in:
@@ -0,0 +1,161 @@
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/**
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* Code block styles
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*
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* Frontend and editor preview styles for the Zeitfresser code block feature.
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* The selectors are scoped to avoid leaking into unrelated blocks or plugins.
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*/
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/* -------------------------------------------------------------------------
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Code block wrapper
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------------------------------------------------------------------------- */
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.ztfr-code {
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position: relative;
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background-color: var(--footer-color);
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color: var(--light-color);
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padding: 1.1rem 1.2rem;
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margin: 1rem 0;
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border-radius: 6px;
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max-width: 100%;
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overflow-x: auto;
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font-family: var(--secondary-font);
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font-size: 0.870rem;
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line-height: 1.6;
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font-weight: 400;
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border: 1px solid rgba(248, 248, 242, 0.08);
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}
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/* -------------------------------------------------------------------------
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Prism overrides
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------------------------------------------------------------------------- */
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.ztfr-code pre,
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.ztfr-code code {
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background: transparent;
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color: inherit;
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}
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.ztfr-code pre[class*="language-"],
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.ztfr-code code[class*="language-"] {
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background: transparent !important;
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padding: 0 !important;
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margin: 0 !important;
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white-space: pre-wrap !important;
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word-break: break-word !important;
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overflow-wrap: break-word !important;
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}
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.ztfr-code pre[class*="language-"] {
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overflow-x: visible !important;
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}
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.ztfr-code pre code {
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display: block;
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padding: 1rem;
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overflow-x: auto;
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white-space: pre-wrap;
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word-break: break-word;
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overflow-wrap: break-word;
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}
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/* -------------------------------------------------------------------------
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Copy button
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------------------------------------------------------------------------- */
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.ztfr-code__copy {
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position: absolute;
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top: 0.75rem;
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right: 0.75rem;
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background-color: var(--footer-color);
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color: var(--light-color);
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border: 1px solid rgba(248, 248, 242, 0.12);
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border-radius: 4px;
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font-size: 0.72rem;
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line-height: 1;
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padding: 0.45rem 0.65rem;
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cursor: pointer;
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opacity: 0;
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pointer-events: none;
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transition:
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opacity 0.2s ease,
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background-color 0.2s ease,
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color 0.2s ease,
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border-color 0.2s ease;
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}
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.ztfr-code:hover .ztfr-code__copy {
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opacity: 1;
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pointer-events: auto;
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}
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.ztfr-code__copy:hover {
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background-color: var(--hover-color);
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color: #f8f8f2;
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}
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.ztfr-code__copy:focus {
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opacity: 1;
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pointer-events: auto;
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outline: 2px solid #bd93f9;
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outline-offset: 2px;
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}
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/* -------------------------------------------------------------------------
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Dracula token colors
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------------------------------------------------------------------------- */
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.ztfr-code .token.comment,
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.ztfr-code .token.prolog,
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.ztfr-code .token.doctype,
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.ztfr-code .token.cdata {
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color: #6272a4;
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}
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.ztfr-code .token.punctuation {
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color: #f8f8f2;
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}
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.ztfr-code .token.tag,
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.ztfr-code .token.constant,
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.ztfr-code .token.symbol,
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.ztfr-code .token.deleted {
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color: #ff79c6;
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}
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.ztfr-code .token.attr-name,
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.ztfr-code .token.property,
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.ztfr-code .token.selector,
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.ztfr-code .token.important,
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.ztfr-code .token.atrule {
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color: #8be9fd;
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}
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.ztfr-code .token.attr-value,
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.ztfr-code .token.string,
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.ztfr-code .token.char,
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.ztfr-code .token.inserted {
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color: #f1fa8c;
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}
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.ztfr-code .token.keyword,
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.ztfr-code .token.boolean,
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.ztfr-code .token.number {
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color: #bd93f9;
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}
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.ztfr-code .token.operator,
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.ztfr-code .token.entity,
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.ztfr-code .token.url {
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color: #f8f8f2;
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}
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.ztfr-code .token.function,
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.ztfr-code .token.class-name {
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color: #50fa7b;
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}
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.block-editor-block-list__layout .ztfr-code,
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.editor-styles-wrapper .ztfr-code {
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margin: 0;
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}
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@@ -0,0 +1,116 @@
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/**
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* Editor styles
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*
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* Scoped styles for Gutenberg and Classic Editor.
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*/
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/* -------------------------------------------------------------------------
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Editor base
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------------------------------------------------------------------------- */
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.editor-styles-wrapper,
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.mce-content-body {
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font-family: var(--secondary-font);
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line-height: 1.7;
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}
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/* -------------------------------------------------------------------------
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Shared code block preview
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------------------------------------------------------------------------- */
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.editor-styles-wrapper .ztfr-code,
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.editor-styles-wrapper pre.language-yaml,
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.mce-content-body pre.language-yaml {
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position: relative;
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background-color: #282a36;
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color: #f8f8f2;
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border: 1px solid rgba(248, 248, 242, 0.08);
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border-radius: 6px;
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padding: 1rem 1.2rem;
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margin: 1rem 0;
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max-width: 100%;
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overflow-x: auto;
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font-family: var(--secondary-font);
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font-size: 0.95rem;
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line-height: 1.7;
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box-sizing: border-box;
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}
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/* -------------------------------------------------------------------------
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Gutenberg preview
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------------------------------------------------------------------------- */
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.editor-styles-wrapper .ztfr-code pre,
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.editor-styles-wrapper .ztfr-code code {
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background: transparent;
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color: inherit;
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}
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.editor-styles-wrapper .ztfr-code pre.language-yaml,
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.editor-styles-wrapper .ztfr-code code.language-yaml {
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background: transparent !important;
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padding: 0 !important;
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margin: 0 !important;
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white-space: pre-wrap !important;
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word-break: break-word !important;
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overflow-wrap: break-word !important;
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}
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.editor-styles-wrapper .ztfr-code pre code {
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display: block;
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white-space: pre-wrap;
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word-break: break-word;
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overflow-wrap: break-word;
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}
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/* -------------------------------------------------------------------------
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Classic Editor preview
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------------------------------------------------------------------------- */
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.mce-content-body pre.language-yaml {
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white-space: pre-wrap;
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word-break: break-word;
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overflow-wrap: break-word;
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}
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.mce-content-body pre.language-yaml code.language-yaml {
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display: block;
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background: transparent;
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color: inherit;
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padding: 0;
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margin: 0;
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white-space: pre-wrap;
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word-break: break-word;
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overflow-wrap: break-word;
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}
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/* -------------------------------------------------------------------------
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Editor label
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------------------------------------------------------------------------- */
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.editor-styles-wrapper .ztfr-code.is-editor-preview::before,
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.mce-content-body pre.language-yaml::before {
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content: "YAML";
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display: inline-block;
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margin-bottom: 0.75rem;
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padding: 0.2rem 0.45rem;
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border-radius: 4px;
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background: #44475a;
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color: #f8f8f2;
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font-size: 0.72rem;
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line-height: 1;
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letter-spacing: 0.03em;
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}
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/* -------------------------------------------------------------------------
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Lists
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------------------------------------------------------------------------- */
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.editor-styles-wrapper ul,
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.editor-styles-wrapper ol,
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.mce-content-body ul,
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.mce-content-body ol {
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margin-left: 0;
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padding-left: 1.25em;
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list-style-position: outside;
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}
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@@ -0,0 +1,94 @@
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/**
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* Code Block UI Enhancements
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*
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* Handles:
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* - Copy button
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* - Prism highlight trigger
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*/
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(function () {
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'use strict';
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function copyText(text, onSuccess, onError) {
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if (!text) {
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return;
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}
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if (navigator.clipboard && window.isSecureContext) {
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navigator.clipboard.writeText(text).then(onSuccess).catch(onError);
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return;
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}
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const textarea = document.createElement('textarea');
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textarea.value = text;
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textarea.setAttribute('readonly', 'readonly');
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textarea.style.position = 'fixed';
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textarea.style.opacity = '0';
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textarea.style.pointerEvents = 'none';
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document.body.appendChild(textarea);
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textarea.focus();
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textarea.select();
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try {
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document.execCommand('copy');
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onSuccess();
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} catch (error) {
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onError();
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}
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document.body.removeChild(textarea);
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}
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function initCodeUI() {
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const wrappers = document.querySelectorAll('.ztfr-code');
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if (!wrappers.length) {
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return;
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}
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wrappers.forEach(function (wrapper) {
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const code = wrapper.querySelector('code');
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if (!code) {
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return;
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}
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if (!wrapper.querySelector('.ztfr-code__copy')) {
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const button = document.createElement('button');
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button.className = 'ztfr-code__copy';
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button.type = 'button';
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button.setAttribute('aria-label', 'Copy code');
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button.textContent = 'Copy';
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button.addEventListener('click', function () {
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const text = code.textContent;
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copyText(
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text,
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function () {
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button.textContent = 'Copied';
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window.setTimeout(function () {
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button.textContent = 'Copy';
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}, 2000);
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},
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function () {
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button.textContent = 'Error';
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window.setTimeout(function () {
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button.textContent = 'Copy';
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}, 2000);
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}
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);
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});
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wrapper.appendChild(button);
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}
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});
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if (typeof Prism !== 'undefined') {
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Prism.highlightAll();
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}
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}
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document.addEventListener('DOMContentLoaded', initCodeUI);
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})();
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@@ -0,0 +1,113 @@
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(function () {
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'use strict';
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/**
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* Gutenberg block
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*/
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if (
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window.wp &&
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window.wp.blocks &&
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window.wp.element &&
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window.wp.i18n &&
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window.wp.components &&
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window.wp.blockEditor
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) {
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const blocks = window.wp.blocks;
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const element = window.wp.element;
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const i18n = window.wp.i18n;
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const blockEditor = window.wp.blockEditor;
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const el = element.createElement;
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const __ = i18n.__;
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const PlainText = blockEditor.PlainText;
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blocks.registerBlockType('ztfr/code-block', {
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title: __('Code', 'zeitfresser'),
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icon: 'editor-code',
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category: 'formatting',
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description: __('Insert a styled YAML code block.', 'zeitfresser'),
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supports: {
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html: false
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},
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attributes: {
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content: {
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type: 'string',
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default: ''
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}
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},
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edit: function (props) {
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const content = props.attributes.content || '';
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return el(
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'div',
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{
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className: 'ztfr-code is-editor-preview',
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'data-language': 'yaml'
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},
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el(
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'pre',
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{ className: 'language-yaml' },
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el(PlainText, {
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tagName: 'code',
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className: 'language-yaml',
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value: content,
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placeholder: __('Write or paste YAML code here…', 'zeitfresser'),
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onChange: function (value) {
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props.setAttributes({ content: value });
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}
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})
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)
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);
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},
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save: function (props) {
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const content = props.attributes.content || '';
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return el(
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'pre',
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{ className: 'language-yaml' },
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el(
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'code',
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{ className: 'language-yaml' },
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content
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)
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);
|
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}
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});
|
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}
|
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|
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/**
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* Classic Editor TinyMCE button
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*/
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if (window.tinymce && window.tinymce.PluginManager) {
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function escapeHtml(text) {
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return String(text)
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.replace(/&/g, '&')
|
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.replace(/</g, '<')
|
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.replace(/>/g, '>')
|
||||
.replace(/"/g, '"')
|
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.replace(/'/g, ''');
|
||||
}
|
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|
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window.tinymce.PluginManager.add('ztfr_code_block', function (editor) {
|
||||
function insertCodeBlock() {
|
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const selectedText = editor.selection.getContent({ format: 'text' });
|
||||
const code = selectedText || 'your_key: your_value';
|
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const safeCode = escapeHtml(code);
|
||||
|
||||
editor.insertContent(
|
||||
'<pre class="language-yaml"><code class="language-yaml">' +
|
||||
safeCode +
|
||||
'</code></pre><p></p>'
|
||||
);
|
||||
}
|
||||
|
||||
editor.addButton('ztfr_code_block', {
|
||||
text: 'Code',
|
||||
icon: false,
|
||||
onclick: insertCodeBlock
|
||||
});
|
||||
});
|
||||
}
|
||||
})();
|
||||
File diff suppressed because one or more lines are too long
@@ -1,7 +0,0 @@
|
||||
/* Align lists in the Classic Editor */
|
||||
ul, ol {
|
||||
margin-left: 0 !important;
|
||||
padding-left: 1.0em !important;
|
||||
list-style-position: inside !important;
|
||||
}
|
||||
|
||||
+8
-10
@@ -51,6 +51,7 @@ require get_template_directory() . '/inc/utilities/toc.php';
|
||||
* ------------------------------------------------------------------------
|
||||
*/
|
||||
require get_template_directory() . '/inc/tools/image-optimizer.php';
|
||||
require get_template_directory() . '/inc/tools/code-block.php';
|
||||
|
||||
/**
|
||||
* ------------------------------------------------------------------------
|
||||
@@ -142,8 +143,6 @@ function zeitfresser_setup() {
|
||||
register_nav_menus( array(
|
||||
'menu-1' => esc_html__( 'Primary', 'zeitfresser' ),
|
||||
));
|
||||
|
||||
add_editor_style( 'editor-style.css' );
|
||||
}
|
||||
add_action( 'after_setup_theme', 'zeitfresser_setup' );
|
||||
|
||||
@@ -248,6 +247,13 @@ function zeitfresser_scripts() {
|
||||
}
|
||||
add_action( 'wp_enqueue_scripts', 'zeitfresser_scripts', 10 );
|
||||
|
||||
// Editor Styles
|
||||
function zeitfresser_editor_styles_setup() {
|
||||
add_theme_support( 'editor-styles' );
|
||||
add_editor_style( 'assets/css/editor.css' );
|
||||
}
|
||||
add_action( 'after_setup_theme', 'zeitfresser_editor_styles_setup' );
|
||||
|
||||
/**
|
||||
* ------------------------------------------------------------------------
|
||||
* Performance Tweaks
|
||||
@@ -693,11 +699,3 @@ function zeitfresser_responsive_image_sizes( $sizes, $size ) {
|
||||
return $sizes;
|
||||
}
|
||||
add_filter( 'wp_calculate_image_sizes', 'zeitfresser_responsive_image_sizes', 10, 2 );
|
||||
|
||||
/**
|
||||
* Delete Cookie Button
|
||||
*/
|
||||
add_filter( 'comment_form_default_fields', function( $fields ) {
|
||||
unset( $fields['cookies'] );
|
||||
return $fields;
|
||||
});
|
||||
|
||||
@@ -0,0 +1,211 @@
|
||||
<?php
|
||||
/**
|
||||
* Simplified Code Block Feature
|
||||
*
|
||||
* Handles:
|
||||
* - Frontend assets
|
||||
* - Editor assets
|
||||
* - Classic Editor button
|
||||
* - Gutenberg block
|
||||
* - Server-side wrapping for code blocks
|
||||
*
|
||||
* @package Zeitfresser
|
||||
*/
|
||||
|
||||
if ( ! defined( 'ABSPATH' ) ) {
|
||||
exit;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get asset version from file modification time.
|
||||
*
|
||||
* @param string $relative_path Relative path inside the theme directory.
|
||||
* @return string
|
||||
*/
|
||||
function ztfr_code_asset_version( $relative_path ) {
|
||||
$file_path = get_template_directory() . $relative_path;
|
||||
|
||||
if ( file_exists( $file_path ) ) {
|
||||
return (string) filemtime( $file_path );
|
||||
}
|
||||
|
||||
return (string) ZEITFRESSER_VERSION;
|
||||
}
|
||||
|
||||
/**
|
||||
* Enqueue frontend assets.
|
||||
*/
|
||||
function ztfr_enqueue_code_assets() {
|
||||
|
||||
if ( is_admin() ) {
|
||||
return;
|
||||
}
|
||||
|
||||
$code_css_version = ztfr_code_asset_version( '/assets/css/code.css' );
|
||||
$prism_version = ztfr_code_asset_version( '/assets/js/prism.js' );
|
||||
$code_js_version = ztfr_code_asset_version( '/assets/js/code-block.js' );
|
||||
|
||||
wp_enqueue_style(
|
||||
'ztfr-code',
|
||||
get_template_directory_uri() . '/assets/css/code.css',
|
||||
[],
|
||||
$code_css_version
|
||||
);
|
||||
|
||||
wp_enqueue_script(
|
||||
'ztfr-prism',
|
||||
get_template_directory_uri() . '/assets/js/prism.js',
|
||||
[],
|
||||
$prism_version,
|
||||
true
|
||||
);
|
||||
|
||||
/**
|
||||
* Disable Prism auto-highlighting.
|
||||
*
|
||||
* Prism auto-runs on DOM ready unless Prism.manual is set before the core
|
||||
* script executes. We disable auto-run so highlighting happens only once
|
||||
* in our custom script after the DOM is ready.
|
||||
*/
|
||||
wp_add_inline_script(
|
||||
'ztfr-prism',
|
||||
'window.Prism = window.Prism || {}; window.Prism.manual = true;',
|
||||
'before'
|
||||
);
|
||||
|
||||
wp_enqueue_script(
|
||||
'ztfr-code-block',
|
||||
get_template_directory_uri() . '/assets/js/code-block.js',
|
||||
[ 'ztfr-prism' ],
|
||||
$code_js_version,
|
||||
true
|
||||
);
|
||||
}
|
||||
add_action( 'wp_enqueue_scripts', 'ztfr_enqueue_code_assets' );
|
||||
|
||||
/**
|
||||
* Enqueue block editor assets.
|
||||
*/
|
||||
function ztfr_enqueue_code_block_editor_assets() {
|
||||
$editor_js_version = ztfr_code_asset_version( '/assets/js/editor.js' );
|
||||
$code_css_version = ztfr_code_asset_version( '/assets/css/code.css' );
|
||||
$editor_css_version = ztfr_code_asset_version( '/assets/css/editor.css' );
|
||||
|
||||
wp_enqueue_script(
|
||||
'ztfr-code-editor',
|
||||
get_template_directory_uri() . '/assets/js/editor.js',
|
||||
[
|
||||
'wp-blocks',
|
||||
'wp-element',
|
||||
'wp-i18n',
|
||||
'wp-components',
|
||||
'wp-block-editor',
|
||||
],
|
||||
$editor_js_version,
|
||||
true
|
||||
);
|
||||
|
||||
wp_enqueue_style(
|
||||
'ztfr-code-editor-preview',
|
||||
get_template_directory_uri() . '/assets/css/code.css',
|
||||
[],
|
||||
$code_css_version
|
||||
);
|
||||
|
||||
wp_enqueue_style(
|
||||
'ztfr-editor',
|
||||
get_template_directory_uri() . '/assets/css/editor.css',
|
||||
[],
|
||||
$editor_css_version
|
||||
);
|
||||
}
|
||||
add_action( 'enqueue_block_editor_assets', 'ztfr_enqueue_code_block_editor_assets' );
|
||||
|
||||
/**
|
||||
* Register Classic Editor button only for users who can edit and use rich text.
|
||||
*/
|
||||
function ztfr_register_classic_code_button() {
|
||||
|
||||
if ( ! current_user_can( 'edit_posts' ) && ! current_user_can( 'edit_pages' ) ) {
|
||||
return;
|
||||
}
|
||||
|
||||
if ( 'true' !== get_user_option( 'rich_editing' ) ) {
|
||||
return;
|
||||
}
|
||||
|
||||
add_filter( 'mce_external_plugins', 'ztfr_add_classic_code_plugin' );
|
||||
add_filter( 'mce_buttons', 'ztfr_add_classic_code_button' );
|
||||
}
|
||||
add_action( 'admin_init', 'ztfr_register_classic_code_button' );
|
||||
|
||||
/**
|
||||
* Add TinyMCE plugin script.
|
||||
*
|
||||
* @param array $plugins TinyMCE plugins.
|
||||
* @return array
|
||||
*/
|
||||
function ztfr_add_classic_code_plugin( $plugins ) {
|
||||
$plugins['ztfr_code_block'] = get_template_directory_uri() . '/assets/js/editor.js';
|
||||
return $plugins;
|
||||
}
|
||||
|
||||
/**
|
||||
* Add TinyMCE toolbar button.
|
||||
*
|
||||
* @param array $buttons TinyMCE buttons.
|
||||
* @return array
|
||||
*/
|
||||
function ztfr_add_classic_code_button( $buttons ) {
|
||||
$buttons[] = 'ztfr_code_block';
|
||||
return $buttons;
|
||||
}
|
||||
|
||||
/**
|
||||
* Wrap code blocks server-side.
|
||||
*
|
||||
* This keeps Classic Editor, Gutenberg and pasted raw code blocks
|
||||
* compatible with the frontend styling without runtime DOM manipulation.
|
||||
*
|
||||
* @param string $content Post content.
|
||||
* @return string
|
||||
*/
|
||||
function ztfr_wrap_code_blocks( $content ) {
|
||||
|
||||
if ( is_admin() ) {
|
||||
return $content;
|
||||
}
|
||||
|
||||
if ( false === strpos( $content, '<pre' ) ) {
|
||||
return $content;
|
||||
}
|
||||
|
||||
$content = preg_replace_callback(
|
||||
'/<pre([^>]*)><code([^>]*)>(.*?)<\/code><\/pre>/s',
|
||||
function ( $matches ) {
|
||||
|
||||
$pre_attrs = $matches[1];
|
||||
$code_attrs = $matches[2];
|
||||
$code = $matches[3];
|
||||
|
||||
if ( false === strpos( $pre_attrs, 'language-' ) ) {
|
||||
$pre_attrs .= ' class="language-yaml"';
|
||||
}
|
||||
|
||||
if ( false === strpos( $code_attrs, 'language-' ) ) {
|
||||
$code_attrs .= ' class="language-yaml"';
|
||||
}
|
||||
|
||||
return sprintf(
|
||||
'<div class="ztfr-code"><pre%s><code%s>%s</code></pre></div>',
|
||||
$pre_attrs,
|
||||
$code_attrs,
|
||||
$code
|
||||
);
|
||||
},
|
||||
$content
|
||||
);
|
||||
|
||||
return $content;
|
||||
}
|
||||
add_filter( 'the_content', 'ztfr_wrap_code_blocks', 20 );
|
||||
@@ -224,3 +224,11 @@ if ( ! function_exists( 'zeitfresser_asset' ) ) {
|
||||
return get_template_directory_uri() . '/assets/' . ltrim($path, '/');
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Delete Cookie Button
|
||||
*/
|
||||
add_filter( 'comment_form_default_fields', function( $fields ) {
|
||||
unset( $fields['cookies'] );
|
||||
return $fields;
|
||||
});
|
||||
|
||||
Reference in New Issue
Block a user