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+page.svelte
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<script lang="ts">
import Editor from '$lib/components/Editor.svelte';
import Navbar from '$lib/components/Navbar.svelte';
import Preset from '$lib/components/Preset.svelte';
import Actions from '$lib/components/Actions.svelte';
import View from '$lib/components/View.svelte';
import Card from '$lib/components/Card/Card.svelte';
import History from '$lib/components/History/History.svelte';
import { inputStateStore, stateStore, updateCodeStore } from '$lib/util/state';
import { cmdKey, initHandler, syncDiagram } from '$lib/util/util';
import { onMount } from 'svelte';
import { base } from '$app/paths';
import { dev } from '$app/environment';
import type { Tab, DocumentationConfig, EditorMode, ValidatedState } from '$lib/types';
const MCBaseURL = dev ? 'https://localhost:5174' : 'https://mermaidchart.com';
const docURLBase = 'https://mermaid-js.github.io/mermaid';
const docMap: DocumentationConfig = {
graph: {
code: '/syntax/.html',
config: '/syntax/.html#configuration'
},
flowchart: {
code: '/syntax/flowchart.html',
config: '/syntax/flowchart.html#configuration'
},
sequenceDiagram: {
code: '/syntax/sequenceDiagram.html',
config: '/syntax/sequenceDiagram.html#configuration'
},
classDiagram: {
code: '/syntax/classDiagram.html',
config: '/syntax/classDiagram.html#configuration'
},
'stateDiagram-v2': {
code: '/syntax/stateDiagram.html'
},
gantt: {
code: '/syntax/gantt.html',
config: '/syntax/gantt.html#configuration'
},
pie: {
code: '/syntax/pie.html',
config: '/syntax/pie.html#configuration'
},
erDiagram: {
code: '/syntax/entityRelationshipDiagram.html',
config: '/syntax/entityRelationshipDiagram.html#styling'
},
journey: {
code: '/syntax/userJourney.html'
},
gitGraph: {
code: '/syntax/gitgraph.html',
config: '/syntax/gitgraph.html#gitgraph-specific-configuration-options'
}
};
let docURL = docURLBase;
let activeTabID = 'code';
let docKey = '';
stateStore.subscribe(({ code, editorMode }: ValidatedState) => {
activeTabID = editorMode;
const codeTypeMatch = /([\S]+)[\s\n]/.exec(code);
if (codeTypeMatch && codeTypeMatch.length > 1) {
docKey = codeTypeMatch[1];
const docConfig = docMap[docKey] ?? { code: '' };
docURL = docURLBase + (docConfig[editorMode] ?? docConfig.code ?? '');
}
});
const tabSelectHandler = (message: CustomEvent<Tab>) => {
const editorMode: EditorMode = message.detail.id === 'code' ? 'code' : 'config';
updateCodeStore({ editorMode });
};
const tabs: Tab[] = [
{
id: 'code',
title: 'Code',
icon: 'fas fa-code'
},
{
id: 'config',
title: 'Config',
icon: 'fas fa-cogs'
}
];
onMount(async () => {
await initHandler();
const resizer = document.getElementById('resizeHandler');
const element = document.getElementById('editorPane');
if (!resizer || !element) {
console.debug('Failed to find resize handler or editor pane', { resizer, element });
return;
}
const resize = (e: { pageX: number }) => {
const newWidth = e.pageX - element.getBoundingClientRect().left;
if (newWidth > 50) {
element.style.width = `${newWidth}px`;
}
};
const stopResize = () => {
window.removeEventListener('mousemove', resize);
};
resizer.addEventListener('mousedown', (e) => {
e.preventDefault();
window.addEventListener('mousemove', resize);
window.addEventListener('mouseup', stopResize);
});
});
</script>
<div class="h-full flex flex-col overflow-hidden">
<Navbar />
<div class="flex-1 flex overflow-hidden">
<div class="hidden md:flex flex-col" id="editorPane" style="width: 40%">
<Card on:select={tabSelectHandler} {tabs} isCloseable={false} {activeTabID} title="Mermaid">
<div slot="actions" class="flex flex-row items-center">
<div class="form-control flex-row items-center">
<label class="cursor-pointer label" for="autoSync">
<span> Auto sync</span>
<input
type="checkbox"
class="toggle {$stateStore.autoSync ? 'btn-secondary' : 'toggle-primary'} ml-1"
id="autoSync"
bind:checked={$inputStateStore.autoSync} />
</label>
</div>
{#if !$stateStore.autoSync}
<button
class="btn btn-secondary btn-xs mr-1"
title="Sync Diagram ({cmdKey} + Enter)"
data-cy="sync"
on:click={syncDiagram}><i class="fas fa-sync" /></button>
{/if}
<button
class="btn btn-secondary btn-xs"
title="View documentation for {docKey.replace('Diagram', '')} diagram">
<a target="_blank" href={docURL} data-cy="docs">
<i class="fas fa-book mr-1" />Docs
</a>
</button>
</div>
<Editor />
</Card>
<div class="-mt-2">
<Preset />
<History />
<Actions />
</div>
</div>
<div id="resizeHandler" class="hidden md:block" />
<div class="flex-1 flex flex-col overflow-hidden">
<Card title="Diagram" isCloseable={false}>
<div slot="actions" class="flex flex-row items-center gap-2">
<label class="cursor-pointer label py-0" for="panZoom">
<span>Pan & Zoom</span>
<input
type="checkbox"
class="toggle {$stateStore.panZoom ? 'btn-secondary' : 'toggle-primary'}"
id="panZoom"
bind:checked={$inputStateStore.panZoom} />
</label>
<a
href={`${base}/view#${$stateStore.serialized}`}
target="_blank"
class="btn btn-secondary btn-xs gap-1"
title="View diagram in new page"><i class="fas fa-external-link-alt" />Full screen</a>
<a
href={`${MCBaseURL}/app/plugin/save?state=${$stateStore.serialized}`}
target="_blank"
class="btn btn-secondary btn-xs gap-1 bg-[#FF3570]"
title="Save diagram in Mermaid Chart"
><img src="/mermaidchart-logo.svg" class="w-5 h-5" alt="Mermaid chart logo" />Save to
Mermaid Chart</a>
</div>
<div class="flex-1 overflow-auto">
<View />
</div>
</Card>
<div class="md:hidden rounded shadow p-2 mx-2">
Code editing not supported on mobile. Please use a desktop browser.
</div>
</div>
</div>
</div>
<style>
#resizeHandler {
cursor: col-resize;
padding: 0 2px;
}
#resizeHandler::after {
width: 2px;
height: 100%;
top: 0;
content: '';
position: absolute;
background-color: hsla(var(--b3));
margin-left: -1px;
transition-duration: 0.2s;
}
#resizeHandler:hover::after {
margin-left: -2px;
background-color: hsla(var(--p));
width: 4px;
}
</style>