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feat: add code block line wrap toggle

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Adds a chat code block wrap toggle in markdown code block headers
Persists and restores the setting across desktop/web settings
Adds localized labels and OpenChamber search entry for the new option
This commit is contained in:
Bohdan Triapitsyn
2026-07-08 14:46:44 +03:00
parent 859b4529da
commit 8b7448bcf0
30 changed files with 166 additions and 9 deletions
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packages/ui/src/components/chat/markdown/decorate.ts
+53 -4
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@@ -11,6 +11,8 @@ export type MermaidRender = { svg?: string; ascii?: string };
export type DecorateLabels = {
copy: string;
copied: string;
enableCodeWrap: string;
disableCodeWrap: string;
copyTable: string;
downloadTable: string;
copyDiagram: string;
@@ -21,6 +23,8 @@ export type DecorateLabels = {
export type DecorateContext = {
labels: DecorateLabels;
codeBlockLineWrap: boolean;
onToggleCodeBlockLineWrap?: () => void;
// Renders a mermaid block source to svg/ascii using current theme colors.
renderMermaid: (source: string) => MermaidRender;
onPreviewLoopback?: (url: string) => void;
@@ -36,6 +40,7 @@ const ICONS = {
copy: spriteIcon('file-copy'),
check: spriteIcon('check'),
download: spriteIcon('download'),
textWrap: spriteIcon('text-wrap'),
} as const;
const ICON_BTN_CLASS =
@@ -56,6 +61,37 @@ const makeIconButton = (icon: keyof typeof ICONS, title: string, slot: string):
return button;
};
const applyCodeBlockWrapState = (wrapper: HTMLElement, enabled: boolean, labels: DecorateLabels): void => {
const body = wrapper.querySelector<HTMLElement>('[data-md-code-body]');
const pre = wrapper.querySelector<HTMLElement>('pre');
const code = wrapper.querySelector<HTMLElement>('pre code');
const wrapButton = wrapper.querySelector<HTMLButtonElement>('[data-md-action="toggle-code-wrap"]');
wrapper.setAttribute('data-code-wrap', enabled ? 'true' : 'false');
body?.classList.toggle('overflow-x-auto', !enabled);
body?.classList.toggle('overflow-x-hidden', enabled);
pre?.classList.toggle('whitespace-pre-wrap', enabled);
pre?.classList.toggle('break-words', enabled);
code?.classList.toggle('whitespace-pre-wrap', enabled);
code?.classList.toggle('break-words', enabled);
if (wrapButton) {
const title = enabled ? labels.disableCodeWrap : labels.enableCodeWrap;
wrapButton.setAttribute('title', title);
wrapButton.setAttribute('aria-label', title);
wrapButton.classList.toggle('text-foreground', enabled);
wrapButton.classList.toggle('opacity-100', enabled);
wrapButton.classList.toggle('text-muted-foreground', !enabled);
wrapButton.classList.toggle('opacity-65', !enabled);
wrapButton.setAttribute('aria-pressed', enabled ? 'true' : 'false');
}
};
export const applyMarkdownCodeBlockWrapState = (root: HTMLElement, enabled: boolean, labels: DecorateLabels): void => {
const wrappers = root.querySelectorAll<HTMLElement>('[data-component="markdown-code"]');
for (const wrapper of Array.from(wrappers)) {
applyCodeBlockWrapState(wrapper, enabled, labels);
}
};
const flashCopied = (button: HTMLButtonElement, copiedTitle: string, restore: keyof typeof ICONS, restoreTitle: string): void => {
setHtml(button, ICONS.check);
button.setAttribute('title', copiedTitle);
@@ -78,7 +114,7 @@ const decorateInlineCode = (root: HTMLElement): void => {
}
};
const decorateCodeBlocks = (root: HTMLElement, labels: DecorateLabels): void => {
const decorateCodeBlocks = (root: HTMLElement, ctx: DecorateContext): void => {
const blocks = root.querySelectorAll<HTMLPreElement>('pre');
for (const pre of Array.from(blocks)) {
// Skip mermaid placeholders (handled separately).
@@ -104,11 +140,17 @@ const decorateCodeBlocks = (root: HTMLElement, labels: DecorateLabels): void =>
const langLabel = document.createElement('span');
langLabel.className = 'font-mono text-[13px] text-muted-foreground';
langLabel.textContent = language;
const copyBtn = makeIconButton('copy', labels.copy, 'copy-code');
const copyBtn = makeIconButton('copy', ctx.labels.copy, 'copy-code');
const wrapBtn = makeIconButton('textWrap', ctx.codeBlockLineWrap ? ctx.labels.disableCodeWrap : ctx.labels.enableCodeWrap, 'toggle-code-wrap');
header.appendChild(langLabel);
header.appendChild(copyBtn);
const actions = document.createElement('div');
actions.className = 'flex items-center gap-1';
actions.appendChild(wrapBtn);
actions.appendChild(copyBtn);
header.appendChild(actions);
const body = document.createElement('div');
body.setAttribute('data-md-code-body', '');
body.className = 'px-3 py-2.5 overflow-x-auto';
parent.replaceChild(wrapper, pre);
@@ -117,6 +159,7 @@ const decorateCodeBlocks = (root: HTMLElement, labels: DecorateLabels): void =>
body.appendChild(pre);
wrapper.appendChild(header);
wrapper.appendChild(body);
applyCodeBlockWrapState(wrapper, ctx.codeBlockLineWrap, ctx.labels);
}
};
@@ -332,7 +375,7 @@ const decorateLinks = (root: HTMLElement, ctx: DecorateContext): void => {
export const decorateMarkdown = (root: HTMLElement, ctx: DecorateContext): void => {
decorateInlineCode(root);
decorateMermaid(root, ctx);
decorateCodeBlocks(root, ctx.labels);
decorateCodeBlocks(root, ctx);
decorateTables(root, ctx.labels);
decorateLinks(root, ctx);
};
@@ -387,6 +430,12 @@ export const attachMarkdownInteractions = (
return;
}
if (action === 'toggle-code-wrap') {
event.preventDefault();
ctx.onToggleCodeBlockLineWrap?.();
return;
}
// Toggle table menus
if (action === 'table-copy-toggle' || action === 'table-download-toggle') {
event.preventDefault();