From cc7c49223b07aefef81cd6f8538dd59e2f43eb57 Mon Sep 17 00:00:00 2001
From: peterkogo <peter@Peters-MBP.fritz.box>
Date: Thu, 14 Dec 2023 13:51:25 +0100
Subject: [PATCH] Added seperate portal to put dom elements inside the flow

---
 .../react/src/components/ViewPortal/index.tsx | 19 +++++++++++++++++++
 .../react/src/container/GraphView/index.tsx   |  2 +-
 .../components/ViewPortal/ViewPortal.svelte   | 12 ++++++++++++
 .../src/lib/components/ViewPortal/index.ts    |  1 +
 .../container/SvelteFlow/SvelteFlow.svelte    |  1 +
 5 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 packages/react/src/components/ViewPortal/index.tsx
 create mode 100644 packages/svelte/src/lib/components/ViewPortal/ViewPortal.svelte
 create mode 100644 packages/svelte/src/lib/components/ViewPortal/index.ts

diff --git a/packages/react/src/components/ViewPortal/index.tsx b/packages/react/src/components/ViewPortal/index.tsx
new file mode 100644
index 00000000..5560c803
--- /dev/null
+++ b/packages/react/src/components/ViewPortal/index.tsx
@@ -0,0 +1,19 @@
+import type { ReactNode } from 'react';
+import { createPortal } from 'react-dom';
+
+import { useStore } from '../../hooks/useStore';
+import type { ReactFlowState } from '../../types';
+
+const selector = (s: ReactFlowState) => s.domNode?.querySelector('.react-flow__view-portal');
+
+function ViewPortal({ children }: { children: ReactNode }) {
+  const viewPortalDiv = useStore(selector);
+
+  if (!viewPortalDiv) {
+    return null;
+  }
+
+  return createPortal(children, viewPortalDiv);
+}
+
+export default ViewPortal;
diff --git a/packages/react/src/container/GraphView/index.tsx b/packages/react/src/container/GraphView/index.tsx
index 014d754f..e7d0f83f 100644
--- a/packages/react/src/container/GraphView/index.tsx
+++ b/packages/react/src/container/GraphView/index.tsx
@@ -180,7 +180,7 @@ const GraphView = ({
           />
         </EdgeRenderer>
         <div className="react-flow__edgelabel-renderer" />
-
+        <div className="react-flow__view-portal" />
         <NodeRenderer
           nodeTypes={nodeTypesWrapped}
           onNodeClick={onNodeClick}
diff --git a/packages/svelte/src/lib/components/ViewPortal/ViewPortal.svelte b/packages/svelte/src/lib/components/ViewPortal/ViewPortal.svelte
new file mode 100644
index 00000000..3aa3d117
--- /dev/null
+++ b/packages/svelte/src/lib/components/ViewPortal/ViewPortal.svelte
@@ -0,0 +1,12 @@
+<script lang="ts">
+  import portal from '$lib/actions/portal';
+  import { useStore } from '$lib/store';
+
+  type $$Props = {};
+
+  const { domNode } = useStore();
+</script>
+
+<div use:portal={{ target: '.svelte-flow__view-portal', domNode: $domNode }}>
+  <slot />
+</div>
diff --git a/packages/svelte/src/lib/components/ViewPortal/index.ts b/packages/svelte/src/lib/components/ViewPortal/index.ts
new file mode 100644
index 00000000..778b6276
--- /dev/null
+++ b/packages/svelte/src/lib/components/ViewPortal/index.ts
@@ -0,0 +1 @@
+export { default as ViewPortal } from './ViewPortal.svelte';
diff --git a/packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte b/packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte
index 81aa81bd..e8db67f2 100644
--- a/packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte
+++ b/packages/svelte/src/lib/container/SvelteFlow/SvelteFlow.svelte
@@ -218,6 +218,7 @@
           <slot name="connectionLine" slot="connectionLine" />
         </ConnectionLine>
         <div class="svelte-flow__edgelabel-renderer" />
+        <div class="svelte-view-portal" />
         <NodeRenderer
           on:nodeclick
           on:nodemouseenter