v1.0.7

Features

• Theme system: Built-in IntelliJ default theme with 4 external CSS themes (vscode, github, solarized, catppuccin). Themes use CSS custom properties with light-dark() for automatic light/dark support. External themes are published as CSS files and available via CDN.
• Color scheme: color-scheme attribute to override light/dark mode per element (inherits from parent by default).
• Mixed content highlighting: When language="html", <style> blocks use SCSS highlighting and <script> blocks use TypeScript highlighting automatically.
• CSS custom properties: All 18 token colors and 10 UI colors exposed as --token-* and --code-* variables for external customization.
• Interactive zone styling: Interactive controls expose part="interactive" for external CSS styling (supports :hover). Themes provide color hooks: --code-interactive-highlight (accent), --code-interactive-color (text), --code-interactive-bg-color (background), --code-interactive-border-color (border). Shadow DOM decoration customizable via --code-interactive-text-decoration, --code-interactive-border, etc. Built-in styles: wavy (default), dotted, dashed, highlight, outline, pill, hand-drawn, none.
• Condition value matching: Conditional textareas now support condition="key=value" syntax to show content when a binding equals a specific value (in addition to existing truthy/falsy checks).
• Select carousel mode: New carousel boolean attribute on <code-binding type="select"> cycles through options on click instead of opening a dropdown. Supports keyboard navigation (ArrowUp/ArrowDown) and Shift+click to cycle backward.
• Copy to clipboard button: New show-copy attribute displays a copy button (top-right corner) with SVG clipboard/check icons and visual feedback (green check for 2 seconds after copy). Hidden by default.
• Line numbers: New show-line-numbers attribute displays line numbers in the gutter. Numbers are excluded from copy/paste via user-select: none. Section separators have no line number.
• Hyphenated binding keys: Binding keys now support hyphens (e.g., ${show-line-numbers}) for use with the attribute binding type on HTML attributes.
• Accessibility: Interactive controls now have role, aria-label, and tabindex attributes. Keyboard navigation supports Enter/Space for toggle actions, ArrowUp/Down for number increment/decrement. Focus-visible outline on all interactive elements.

Bug Fixes

• Conditional content not updated for inline controls: When a select (3+ options), number, string, or color binding was modified via inline controls, the _internalChange flag prevented updateCode() from being called, so conditional textareas were not re-evaluated. Now checks for condition dependencies after inline changes.
• Memory leak - empty disconnectedCallback(): MutationObserver, setTimeout, and event listeners were never cleaned up when the element was removed from the DOM. All resources are now properly disposed in disconnectedCallback().
• XSS risk in binding rendering: String, number, color, and select values were inserted into HTML attributes without escaping. All dynamic values are now escaped with escapeHtml().
• Fragile _internalChange flag: If binding.value = newValue threw an error, the flag remained stuck at true. Now wrapped in try/finally blocks.

Improvements

• Consolidated input listeners: Three separate input event listeners merged into a single _handleShadowInput() with extracted helper methods (_handleInlineNumberInput, _handleInlineStringInput, _handleInlineColorInput)
• Refactored renderTemplate(): Decomposed into smaller methods: findBlockCommentKeys(), renderLine(), processMarkers(), buildLineHtml()
• Named event handlers: All anonymous event handlers converted to bound named methods for proper cleanup in disconnectedCallback()
• CommentStyle interface: Extracted return type of getCommentStyle() into a named interface

Tests

• 178 tests total (+68 new): cleanup (3), XSS (3), conditional inline (1), copy button (8), line numbers (5), accessibility (6), condition value matching (5), interactive zone (9), carousel (13), theme system (7), mixed content highlighting (7)