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Merged
pull merged 1 commit into from
Aug 5, 2026
Merged

[pull] main from liveblocks:main #346

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4 changes: 3 additions & 1 deletion examples/nextjs-flowchart-builder/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,9 @@ This example shows how to build a collaborative flowchart builder with
[Next.js](https://nextjs.org/).

You can place blocks, connect them, edit labels, undo and redo, and attach
comments to the canvas or to specific blocks.
comments to the canvas or to specific blocks. Open version history from the
clock button next to the avatars to preview and restore earlier flowchart
states.

<img src="https://raw.githubusercontent.com/liveblocks/liveblocks/main/.github/assets/examples/collaborative-flowchart-builder.png" width="536" alt="Collaborative Flowchart Builder" />

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2 changes: 2 additions & 0 deletions examples/nextjs-flowchart-builder/app/flowchart.tsx
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Expand Up @@ -64,6 +64,7 @@ import {
Icon,
} from "@liveblocks/react-ui";
import { HelpControl } from "../components/HelpButton";
import { VersionsDialog } from "./version-history-dialog";
import {
DndContext,
type DragEndEvent,
Expand Down Expand Up @@ -1694,6 +1695,7 @@ function Flow({ className, ...props }: ComponentProps<"div">) {
<Panel position="top-right">
<div className="flowchart-avatar-stack">
<AvatarStack size={32} gap={3} />
<VersionsDialog />
</div>
</Panel>
<Background />
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176 changes: 176 additions & 0 deletions examples/nextjs-flowchart-builder/app/globals.css
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Expand Up @@ -519,6 +519,9 @@ body {

.flowchart-avatar-stack {
position: relative;
display: flex;
align-items: center;
gap: 8px;

&::before {
content: "";
Expand Down Expand Up @@ -569,3 +572,176 @@ body {
height: 4rem;
opacity: 0.2;
}

.sr-only {
position: absolute;
width: 1px;
height: 1px;
padding: 0;
margin: -1px;
overflow: hidden;
clip: rect(0, 0, 0, 0);
white-space: nowrap;
border-width: 0;
}

.flowchart-version-history-trigger {
display: inline-flex;
align-items: center;
justify-content: center;
width: 36px;
height: 36px;
border-radius: 9999px;
border: 1px solid rgb(0 0 0 / 8%);
background: rgb(255 255 255 / 85%);
color: #404040;
cursor: pointer;
box-shadow: 0 1px 2px rgb(0 0 0 / 6%);
transition:
background 120ms ease,
color 120ms ease,
border-color 120ms ease;
}

.flowchart-version-history-trigger:hover {
background: #fff;
color: #171717;
border-color: rgb(0 0 0 / 12%);
}

.flowchart-version-history-trigger:focus-visible {
outline: 2px solid var(--flowchart-accent);
outline-offset: 2px;
}

.flowchart-version-history-overlay {
position: fixed;
inset: 0;
z-index: 1000;
background: rgb(0 0 0 / 50%);
cursor: pointer;
}

.flowchart-version-history-dialog {
position: fixed;
top: 50%;
left: 50%;
z-index: 1001;
width: 90vw;
height: 85vh;
transform: translate(-50%, -50%);
overflow: hidden;
border-radius: 12px;
border: 1px solid #e5e5e5;
background: #fff;
color: #171717;
box-shadow:
0 20px 25px -5px rgb(0 0 0 / 0.1),
0 8px 10px -6px rgb(0 0 0 / 0.1);
outline: none;
}

.flowchart-versions {
display: flex;
height: 100%;
min-height: 0;
}

.flowchart-versions-preview {
flex: 1 1 auto;
min-width: 0;
min-height: 0;
height: 100%;
}

.flowchart-versions-list {
position: relative;
width: 250px;
height: 100%;
overflow: auto;
border-left: 1px solid rgb(0 0 0 / 8%);
flex: none;
}

.flowchart-version-preview {
height: 100%;
min-height: 0;
}

.flowchart-version-preview-content {
position: relative;
flex: 1 1 auto;
min-height: 0;
padding: 0 !important;
overflow: hidden;
}

.flowchart-version-preview-content .react-flow {
position: absolute;
inset: 0;
width: 100%;
height: 100%;
}

.flowchart-version-preview-status {
display: flex;
align-items: center;
justify-content: center;
height: 100%;
padding: 24px;
color: #737373;
font-size: 14px;
text-align: center;
}

.flowchart-version-preview-label {
pointer-events: none;
resize: none;
overflow: hidden;
white-space: pre-wrap;
word-break: break-word;
}

.flowchart-version-preview-button {
display: inline-flex;
align-items: center;
justify-content: center;
gap: 6px;
height: 36px;
padding: 0 14px;
border-radius: 8px;
border: 1px solid transparent;
font-size: 14px;
font-weight: 500;
cursor: pointer;
transition:
background 120ms ease,
color 120ms ease,
border-color 120ms ease,
opacity 120ms ease;
}

.flowchart-version-preview-button:disabled {
opacity: 0.5;
cursor: not-allowed;
}

.flowchart-version-preview-button-primary {
background: #171717;
color: #fff;
}

.flowchart-version-preview-button-primary:hover:not(:disabled) {
background: #404040;
}

.flowchart-version-preview-button-danger {
background: #fff;
color: #b91c1c;
border-color: #fecaca;
}

.flowchart-version-preview-button-danger:hover:not(:disabled) {
background: #fef2f2;
}

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