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<script lang="ts">
import { onMount, createEventDispatcher, tick, afterUpdate } from "svelte";
import { Marked } from "marked";
import { markedHighlight } from "marked-highlight";
import hljs from 'highlight.js';
import "highlight.js/styles/github.css"; // You can choose a different style
export let value: any;
export let depth = 0;
export let is_root = false;
export let is_last_item = true;
export let key: string | number | null = null;
export let open = false;
export let theme_mode: "system" | "light" | "dark" = "system";
export let show_indices = false;
const dispatch = createEventDispatcher();
let root_element: HTMLElement;
let collapsed = open ? false : depth >= 3;
let child_nodes: any[] = [];
function is_collapsible(val: any): boolean {
return val !== null && (typeof val === "object" || Array.isArray(val));
}
async function toggle_collapse(): Promise<void> {
collapsed = !collapsed;
await tick();
dispatch("toggle", { collapsed, depth });
}
function get_collapsed_preview(val: any): string {
if (Array.isArray(val)) return `Array(${val.length})`;
if (typeof val === "object" && val !== null)
return `Object(${Object.keys(val).length})`;
return String(val);
}
const marked = new Marked(
markedHighlight({
langPrefix: 'hljs language-',
highlight(code, lang, info) {
const language = hljs.getLanguage(lang) ? lang : 'plaintext';
return hljs.highlight(code, { language }).value;
}
})
);
function escapeXmlTagsOutsideCodeBlocks(value: string): string {
const codeBlockRegex = /(```[\s\S]*?```)/g;
const parts = value.split(codeBlockRegex);
return parts.map(part => {
if (part.startsWith('```') && part.endsWith('```')) {
return part; // Do not escape inside code blocks
}
return part.replace(/</g, '<').replace(/>/g, '>'); // Escape outside code blocks
}).join('');
}
function toMarkdown(value: string): string {
// console.log("Render:" + value);
const escapedValue = escapeXmlTagsOutsideCodeBlocks(value);
//console.log("Escaped:" + escapedValue);
const parsed = marked.parse(escapedValue);
const parser = new DOMParser();
const doc = parser.parseFromString(parsed, 'text/html');
doc.querySelectorAll('code').forEach((codeElement) => {
codeElement.setAttribute('style', 'border: 1px solid #d3d3d3; background-color: rgba(150,150,150,0.05);');
});
return doc.body.innerHTML;
}
$: if (is_collapsible(value)) {
child_nodes = Object.entries(value);
} else {
child_nodes = [];
}
$: if (is_root && root_element) {
updateLineNumbers();
}
function updateLineNumbers(): void {
const lines = root_element.querySelectorAll(".line");
lines.forEach((line, index) => {
const line_number = line.querySelector(".line-number");
if (line_number) {
line_number.setAttribute("data-pseudo-content", (index + 1).toString());
line_number?.setAttribute(
"aria-roledescription",
`Line number ${index + 1}`
);
line_number?.setAttribute("title", `Line number ${index + 1}`);
}
});
}
onMount(() => {
if (is_root) {
updateLineNumbers();
}
});
afterUpdate(() => {
if (is_root) {
updateLineNumbers();
}
});
</script>
<div
class="json-node"
class:root={is_root}
class:dark-mode={theme_mode === "dark"}
bind:this={root_element}
on:toggle
style="--depth: {depth};"
>
<div class="line" class:collapsed>
<span class="line-number"></span>
<span class="content">
{#if is_collapsible(value)}
<button
data-pseudo-content={collapsed ? "▶" : "▼"}
aria-label={collapsed ? "Expand" : "Collapse"}
class="toggle"
on:click={toggle_collapse}
/>
{/if}
{#if key !== null}
<span class="key">"{key}"</span><span class="punctuation colon"
>:
</span>
{/if}
{#if is_collapsible(value)}
<span
class="punctuation bracket"
class:square-bracket={Array.isArray(value)}
>{Array.isArray(value) ? "[" : "{"}</span
>
{#if collapsed}
<button on:click={toggle_collapse} class="preview">
{get_collapsed_preview(value)}
</button>
<span
class="punctuation bracket"
class:square-bracket={Array.isArray(value)}
>{Array.isArray(value) ? "]" : "}"}</span
>
{/if}
{:else if typeof value === "string"}
<span class="value">{@html toMarkdown(value)}</span>
{:else if typeof value === "number"}
<span class="value number">{value}</span>
{:else if typeof value === "boolean"}
<span class="value bool">{value.toString()}</span>
{:else if value === null}
<span class="value null">null</span>
{:else}
<span>{value}</span>
{/if}
{#if !is_last_item && (!is_collapsible(value) || collapsed)}
<span class="punctuation">,</span>
{/if}
</span>
</div>
{#if is_collapsible(value)}
<div class="children" class:hidden={collapsed}>
{#each child_nodes as [subKey, subVal], i}
<svelte:self
value={subVal}
depth={depth + 1}
is_last_item={i === child_nodes.length - 1}
key={subKey}
{open}
{theme_mode}
{show_indices}
on:toggle
/>
{/each}
<div class="line">
<span class="line-number"></span>
<span class="content">
<span
class="punctuation bracket"
class:square-bracket={Array.isArray(value)}
>{Array.isArray(value) ? "]" : "}"}</span
>
{#if !is_last_item}<span class="punctuation">,</span>{/if}
</span>
</div>
</div>
{/if}
</div>
<style>
.json-node {
font-family: var(--font-mono);
--text-color: #d18770;
--key-color: var(--text-color);
--string-color: #ce9178;
--number-color: #719fad;
--bracket-color: #5d8585;
--square-bracket-color: #be6069;
--punctuation-color: #8fbcbb;
--line-number-color: #6a737d;
--separator-color: var(--line-number-color);
}
.json-node.dark-mode {
--bracket-color: #7eb4b3;
--number-color: #638d9a;
}
.json-node.root {
position: relative;
padding-left: var(--size-14);
}
.json-node.root::before {
content: "";
position: absolute;
top: 0;
bottom: 0;
left: var(--size-11);
width: 1px;
background-color: var(--separator-color);
}
.line {
display: flex;
align-items: flex-start;
padding: 0;
margin: 0;
line-height: var(--line-md);
}
.line-number {
position: absolute;
left: 0;
width: calc(var(--size-7));
text-align: right;
color: var(--line-number-color);
user-select: none;
text-overflow: ellipsis;
text-overflow: ellipsis;
direction: rtl;
overflow: hidden;
}
.content {
flex: 1;
display: flex;
align-items: center;
padding-left: calc(var(--depth) * var(--size-2));
flex-wrap: wrap;
}
.children {
padding-left: var(--size-4);
}
.children.hidden {
display: none;
}
.key {
color: var(--key-color);
}
.string {
color: var(--string-color);
}
.number {
color: var(--number-color);
}
.bool {
color: var(--text-color);
}
.null {
color: var(--text-color);
}
.value {
margin-left: var(--spacing-md);
}
.punctuation {
color: var(--punctuation-color);
}
.bracket {
margin-left: var(--spacing-sm);
color: var(--bracket-color);
}
.square-bracket {
margin-left: var(--spacing-sm);
color: var(--square-bracket-color);
}
.toggle,
.preview {
background: none;
border: none;
color: inherit;
cursor: pointer;
padding: 0;
margin: 0;
}
.toggle {
user-select: none;
margin-right: var(--spacing-md);
}
.preview {
margin: 0 var(--spacing-sm) 0 var(--spacing-lg);
}
.preview:hover {
text-decoration: underline;
}
:global([data-pseudo-content])::before {
content: attr(data-pseudo-content);
}
</style>
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