Rust implementation of NextGraph, a Decentralized and local-first web 3.0 ecosystem
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nextgraph-rs/ng-app/src/apps/TextViewer.svelte

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<!--
// Copyright (c) 2022-2024 Niko Bonnieure, Par le Peuple, NextGraph.org developers
// All rights reserved.
// Licensed under the Apache License, Version 2.0
// <LICENSE-APACHE2 or http://www.apache.org/licenses/LICENSE-2.0>
// or the MIT license <LICENSE-MIT or http://opensource.org/licenses/MIT>,
// at your option. All files in the project carrying such
// notice may not be copied, modified, or distributed except
// according to those terms.
-->
<script lang="ts">
import { onMount, tick, onDestroy } from "svelte";
import {
sparql_update,
toast_error,
toast_success
} from "../store";
import {
in_memory_discrete, open_viewer, set_viewer, set_editor, set_view_or_edit, cur_tab_branch_class, cur_tab_doc_can_edit
} from "../tab";
import{ PencilSquare, RocketLaunch } from "svelte-heros-v2";
import { t } from "svelte-i18n";
import { Button, Progressbar, Spinner, Alert } from "flowbite-svelte";
import * as Y from 'yjs'
import Highlight, { LineNumbers, HighlightSvelte } from "svelte-highlight";
import typescript from "svelte-highlight/languages/typescript";
import javascript from "svelte-highlight/languages/javascript";
import rust from "svelte-highlight/languages/rust";
import "svelte-highlight/styles/github.css";
const class_to_lang = {
"code:js" : javascript,
"code:ts" : typescript,
"code:rust" : rust,
"code:react" : javascript,
}
let language;
$: language = $cur_tab_branch_class && class_to_lang[$cur_tab_branch_class]
export let commits = {};
let source = "";
const ydoc = new Y.Doc()
const ytext = ydoc.getText('ng')
ydoc.on('destroy', async () => {
commits.discrete?.deregisterOnUpdate();
})
onMount(()=>{
let history = commits.discrete?.registerOnUpdate((update) => {
Y.applyUpdate(ydoc, update.YText, {local:true})
source = ytext.toString()
});
for (const h of history) {
Y.applyUpdate(ydoc, h.YText, {local:true})
}
source = ytext.toString()
});
onDestroy(()=>{
ydoc.destroy();
});
const edit = () => {
set_view_or_edit(false);
}
</script>
<div class="flex-col">
{#if source}
{#if $cur_tab_branch_class === "code:svelte"}
<HighlightSvelte code={source} class="mb-10" let:highlighted>
<LineNumbers {highlighted} wrapLines hideBorder />
</HighlightSvelte>
{:else if language}
<Highlight {language} code={source} class="mb-10" let:highlighted>
<LineNumbers {highlighted} wrapLines hideBorder />
</Highlight>
{:else}
<p class="font-mono whitespace-pre-wrap p-5">
{source}
</p>
{/if}
{:else if $cur_tab_doc_can_edit}
<button
on:click={edit}
on:keypress={edit}
class="select-none ml-5 mt-2 mb-10 text-white bg-primary-700 hover:bg-primary-700/90 focus:ring-4 focus:ring-primary-500/50 rounded-lg text-base p-2 text-center inline-flex items-center dark:focus:ring-primary-700/55"
>
<PencilSquare tabindex="-1" class="mr-2 focus:outline-none" />
{$t("doc.start_editing")}
</button>
{/if}
</div>