refactor(styling): dont inject styles

packages/core/src/components/Nodes/wrapNode.tsx

@@ -149,6 +149,7 @@ export default (NodeComponent: ComponentType<NodeProps>) => {
             selected,
             selectable: isSelectable,
             parent: isParent,
+            dragging,
           },
         ])}
         ref={nodeRef}

packages/core/src/container/FlowRenderer/Pane.tsx

@@ -0,0 +1,34 @@
+import { MouseEvent } from 'react';
+import cc from 'classcat';
+
+import { useStore } from '../../hooks/useStore';
+import { containerStyle } from '../../styles';
+import type { ReactFlowState } from '../../types';
+import type { FlowRendererProps } from '.';
+
+type PaneProps = Pick<FlowRendererProps, 'onClick' | 'onContextMenu' | 'onWheel'> & {
+  onMouseEnter?: (event: MouseEvent) => void;
+  onMouseMove?: (event: MouseEvent) => void;
+  onMouseLeave?: (event: MouseEvent) => void;
+};
+
+const selector = (s: ReactFlowState) => s.paneDragging;
+
+function Pane({ onClick, onMouseEnter, onMouseMove, onMouseLeave, onContextMenu, onWheel }: PaneProps) {
+  const dragging = useStore(selector);
+
+  return (
+    <div
+      className={cc(['react-flow__pane', { dragging }])}
+      onClick={onClick}
+      onMouseEnter={onMouseEnter}
+      onMouseMove={onMouseMove}
+      onMouseLeave={onMouseLeave}
+      onContextMenu={onContextMenu}
+      onWheel={onWheel}
+      style={containerStyle}
+    />
+  );
+}
+
+export default Pane;

packages/core/src/container/FlowRenderer/index.tsx

@@ -7,9 +7,9 @@ import { GraphViewProps } from '../GraphView';
 import ZoomPane from '../ZoomPane';
 import UserSelection from '../../components/UserSelection';
 import NodesSelection from '../../components/NodesSelection';
+import Pane from './Pane';
 
 import { ReactFlowState } from '../../types';
-import { containerStyle } from '../../styles';
 
 export type FlowRendererProps = Omit<
   GraphViewProps,
@@ -110,15 +110,13 @@ const FlowRenderer = ({
           disableKeyboardA11y={disableKeyboardA11y}
         />
       )}
-      <div
-        className="react-flow__pane"
+      <Pane
         onClick={onClick}
         onMouseEnter={onPaneMouseEnter}
         onMouseMove={onPaneMouseMove}
         onMouseLeave={onPaneMouseLeave}
         onContextMenu={onContextMenu}
         onWheel={onWheel}
-        style={containerStyle}
       />
     </ZoomPane>
   );

packages/core/src/container/ReactFlow/index.tsx

@@ -1,6 +1,5 @@
 import { CSSProperties, forwardRef, useId } from 'react';
 import cc from 'classcat';
-import { injectStyle } from '@react-flow/css-utils';
 
 import Attribution from '../../components/Attribution';
 import { BezierEdge, SmoothStepEdge, StepEdge, StraightEdge, SimpleBezierEdge } from '../../components/Edges';
@@ -9,9 +8,6 @@ import InputNode from '../../components/Nodes/InputNode';
 import OutputNode from '../../components/Nodes/OutputNode';
 import SelectionListener from '../../components/SelectionListener';
 import StoreUpdater from '../../components/StoreUpdater';
-import baseStyle from '../../styles/base';
-
-injectStyle(baseStyle);
 
 import {
   ConnectionLineType,

packages/core/src/container/ZoomPane/index.tsx

@@ -169,7 +169,9 @@ const ZoomPane = ({
     if (d3Zoom) {
       d3Zoom.on('start', (event: D3ZoomEvent<HTMLDivElement, any>) => {
         isZoomingOrPanning.current = true;
-
+        if (event.sourceEvent?.type === 'mousedown') {
+          store.setState({ paneDragging: true });
+        }
         if (onMoveStart) {
           const flowTransform = eventToFlowTransform(event.transform);
           prevTransform.current = flowTransform;
@@ -184,6 +186,7 @@ const ZoomPane = ({
     if (d3Zoom) {
       d3Zoom.on('end', (event: D3ZoomEvent<HTMLDivElement, any>) => {
         isZoomingOrPanning.current = false;
+        store.setState({ paneDragging: false });
 
         if (onMoveEnd && viewChanged(prevTransform.current, event.transform)) {
           const flowTransform = eventToFlowTransform(event.transform);

packages/core/src/store/initialState.ts

@@ -30,6 +30,7 @@ const initialState: ReactFlowStore = {
   connectionPosition: { x: 0, y: 0 },
   connectionMode: ConnectionMode.Strict,
   domNode: null,
+  paneDragging: false,
 
   snapGrid: [15, 15],
   snapToGrid: false,

packages/core/src/styles/base.css

@@ -0,0 +1,25 @@
+/* these are very simple styles so that it doesnt look broken */
+@import './init.css';
+
+.react-flow__handle {
+  background-color: #333;
+}
+
+.react-flow__node {
+  border-width: 1px;
+  border-style: solid;
+  border-color: #bbb;
+
+  &.selected,
+  &:focus,
+  &:focus-visible {
+    outline: none;
+    border: 1px solid #555;
+  }
+}
+
+.react-flow__nodesselection-rect,
+.react-flow__selection {
+  background: rgba(150, 150, 180, 0.1);
+  border: 1px dotted rgba(155, 155, 155, 0.8);
+}

packages/core/src/styles/base.ts

@@ -1,226 +0,0 @@
-const style = `
-.react-flow__container {
-  position: absolute;
-  width: 100%;
-  height: 100%;
-  top: 0;
-  left: 0;
-}
-
-.react-flow__pane {
-  z-index: 1;
-}
-
-.react-flow__viewport {
-  transform-origin: 0 0;
-  z-index: 2;
-  pointer-events: none;
-}
-
-.react-flow__renderer {
-  z-index: 4;
-}
-
-.react-flow__selectionpane {
-  z-index: 5;
-}
-
-.react-flow__nodesselection-rect,
-.react-flow__selection {
-  background: rgba(150, 150, 180, 0.1);
-  border: 1px dotted rgba(155, 155, 155, 0.8);
-}
-
-.react-flow__nodesselection-rect:focus,
-.react-flow__nodesselection-rect:focus-visible {
-  outline: none;
-}
-
-.react-flow .react-flow__edges {
-  pointer-events: none;
-  overflow: visible;
-}
-
-.react-flow__connection {
-  pointer-events: none;
-}
-
-.react-flow__connection.animated {
-  stroke-dasharray: 5;
-  animation: dashdraw 0.5s linear infinite;
-}
-
-.react-flow .react-flow__connectionline {
-  z-index: 1001;
-}
-
-.react-flow__connectionline path, .react-flow__edge path {
-  fill: none;
-}
-
-.react-flow__edge-path, .react-flow__connection-path {
-  stroke: #b1b1b7;
-  stroke-width: 1;
-}
-
-.react-flow__edge {
-  pointer-events: visibleStroke;
-}
-
-.react-flow__edge.animated path {
-  stroke-dasharray: 5;
-  animation: dashdraw 0.5s linear infinite;
-}
-
-.react-flow__edge.inactive {
-  pointer-events: none;
-}
-
-.react-flow__edge.selected, .react-flow__edge:focus, .react-flow__edge:focus-visible {
-  outline: none;
-}
-
-.react-flow__edge.selected .react-flow__edge-path,
-.react-flow__edge:focus .react-flow__edge-path,
-.react-flow__edge:focus-visible .react-flow__edge-path {
-  stroke: #555;
-}
-
-@keyframes dashdraw {
-  from {
-    stroke-dashoffset: 10;
-  }
-}
-
-.react-flow__edge-textwrapper {
-  pointer-events: all;
-}
-
-.react-flow__edge-text {
-  pointer-events: none;
-  user-select: none;
-}
-
-.react-flow__edge-textbg {
-  fill: white;
-}
-
-.react-flow__nodes {
-  pointer-events: none;
-  transform-origin: 0 0;
-}
-
-.react-flow__node {
-  position: absolute;
-  user-select: none;
-  pointer-events: all;
-  transform-origin: 0 0;
-  box-sizing: border-box;
-  background-color: white;
-  cursor: grab;
-  border: 1px solid #bbb;
-}
-
-.react-flow__node.selected,
-.react-flow__node:focus,
-.react-flow__node:focus-visible  {
-  outline: none;
-  border: 1px solid #555;
-}
-
-.react-flow__nodesselection {
-  z-index: 3;
-  transform-origin: left top;
-  pointer-events: none;
-}
-
-.react-flow__nodesselection-rect {
-  position: absolute;
-  pointer-events: all;
-  cursor: grab;
-}
-
-.react-flow__handle {
-  position: absolute;
-  pointer-events: none;
-  min-width: 5px;
-  min-height: 5px;
-  background-color: #333;
-}
-
-.react-flow__handle.connectable {
-  pointer-events: all;
-}
-
-.react-flow__handle-bottom {
-  top: auto;
-  left: 50%;
-  bottom: -4px;
-  transform: translate(-50%, 0);
-}
-
-.react-flow__handle-top {
-  left: 50%;
-  top: -4px;
-  transform: translate(-50%, 0);
-}
-
-.react-flow__handle-left {
-  top: 50%;
-  left: -4px;
-  transform: translate(0, -50%);
-}
-
-.react-flow__handle-right {
-  right: -4px;
-  top: 50%;
-  transform: translate(0, -50%);
-}
-
-.react-flow__edgeupdater {
-  cursor: move;
-  pointer-events: all;
-}
-
-.react-flow__panel {
-  position: absolute;
-  z-index: 1000;
-  margin: 15px;
-}
-
-.react-flow__panel.top {
-  top: 0;
-}
-
-.react-flow__panel.bottom {
-  bottom: 0;
-}
-
-.react-flow__panel.left {
-  left: 0;
-}
-
-.react-flow__panel.right {
-  right: 0;
-}
-
-.react-flow__panel.center {
-  left: 50%;
-  transform: translateX(-50%);
-}
-
-.react-flow__attribution {
-  font-size: 10px;
-  background: rgba(255, 255, 255, 0.5);
-  padding: 2px 3px;
-  color: #999;
-  margin: 0;
-}
-
-.react-flow__attribution a {
-  color: #555;
-  text-decoration: none;
-}
-`;
-
-export default style;

packages/core/src/styles/init.css

@@ -0,0 +1,216 @@
+/* these are the necessary styles for React Flow */
+.react-flow__container {
+  position: absolute;
+  width: 100%;
+  height: 100%;
+  top: 0;
+  left: 0;
+}
+
+.react-flow__pane {
+  z-index: 1;
+  cursor: grab;
+
+  &.dragging {
+    cursor: grabbing;
+  }
+}
+
+.react-flow__viewport {
+  transform-origin: 0 0;
+  z-index: 2;
+  pointer-events: none;
+}
+
+.react-flow__renderer {
+  z-index: 4;
+}
+
+.react-flow__selectionpane {
+  z-index: 5;
+}
+
+.react-flow__nodesselection-rect:focus,
+.react-flow__nodesselection-rect:focus-visible {
+  outline: none;
+}
+
+.react-flow .react-flow__edges {
+  pointer-events: none;
+  overflow: visible;
+}
+
+.react-flow__edge-path,
+.react-flow__connection-path {
+  stroke: #b1b1b7;
+  stroke-width: 1;
+}
+
+.react-flow__edge {
+  pointer-events: visibleStroke;
+  cursor: pointer;
+
+  &.animated path {
+    stroke-dasharray: 5;
+    animation: dashdraw 0.5s linear infinite;
+  }
+
+  &.inactive {
+    pointer-events: none;
+  }
+
+  &.selected,
+  &:focus,
+  &:focus-visible {
+    outline: none;
+  }
+
+  &.selected .react-flow__edge-path,
+  &:focus .react-flow__edge-path,
+  &:focus-visible .react-flow__edge-path {
+    stroke: #555;
+  }
+
+  &-textwrapper {
+    pointer-events: all;
+  }
+
+  &-textbg {
+    fill: white;
+  }
+
+  .react-flow__edge-text {
+    pointer-events: none;
+    user-select: none;
+  }
+}
+
+.react-flow__connection {
+  pointer-events: none;
+
+  &.animated {
+    stroke-dasharray: 5;
+    animation: dashdraw 0.5s linear infinite;
+  }
+}
+
+.react-flow__connectionline {
+  z-index: 1001;
+}
+
+.react-flow__nodes {
+  pointer-events: none;
+  transform-origin: 0 0;
+}
+
+.react-flow__node {
+  position: absolute;
+  user-select: none;
+  pointer-events: all;
+  transform-origin: 0 0;
+  box-sizing: border-box;
+  background-color: white;
+  cursor: grab;
+
+  &.dragging {
+    cursor: grabbing;
+  }
+}
+
+.react-flow__nodesselection {
+  z-index: 3;
+  transform-origin: left top;
+  pointer-events: none;
+
+  &-rect {
+    position: absolute;
+    pointer-events: all;
+    cursor: grab;
+  }
+}
+
+.react-flow__handle {
+  position: absolute;
+  pointer-events: none;
+  min-width: 5px;
+  min-height: 5px;
+
+  &.connectable {
+    pointer-events: all;
+  }
+
+  &-bottom {
+    top: auto;
+    left: 50%;
+    bottom: -4px;
+    transform: translate(-50%, 0);
+  }
+
+  &-top {
+    left: 50%;
+    top: -4px;
+    transform: translate(-50%, 0);
+  }
+
+  &-left {
+    top: 50%;
+    left: -4px;
+    transform: translate(0, -50%);
+  }
+
+  &-right {
+    right: -4px;
+    top: 50%;
+    transform: translate(0, -50%);
+  }
+}
+
+.react-flow__edgeupdater {
+  cursor: move;
+  pointer-events: all;
+}
+
+.react-flow__panel {
+  position: absolute;
+  z-index: 1000;
+  margin: 15px;
+
+  &.top {
+    top: 0;
+  }
+
+  &.bottom {
+    bottom: 0;
+  }
+
+  &.left {
+    left: 0;
+  }
+
+  &.right {
+    right: 0;
+  }
+
+  &.center {
+    left: 50%;
+    transform: translateX(-50%);
+  }
+}
+
+.react-flow__attribution {
+  font-size: 10px;
+  background: rgba(255, 255, 255, 0.5);
+  padding: 2px 3px;
+  margin: 0;
+
+  a {
+    text-decoration: none;
+    color: #999;
+  }
+}
+
+@keyframes dashdraw {
+  from {
+    stroke-dashoffset: 10;
+  }
+}

packages/core/src/styles/style.css

@@ -0,0 +1,66 @@
+@import './init.css';
+
+.react-flow__edge {
+  &.updating {
+    .react-flow__edge-path {
+      stroke: #777;
+    }
+  }
+
+  &-text {
+    font-size: 10px;
+  }
+}
+
+.react-flow__node {
+  padding: 10px;
+  border-radius: 3px;
+  width: 150px;
+  font-size: 12px;
+  color: #222;
+  text-align: center;
+  border-width: 1px;
+  border-style: solid;
+  border-color: #1a192b;
+
+  &.selectable {
+    &:hover {
+      box-shadow: 0 1px 4px 1px rgba(0, 0, 0, 0.08);
+    }
+
+    &.selected,
+    &:focus,
+    &:focus-visible {
+      box-shadow: 0 0 0 0.5px #1a192b;
+      outline: none;
+    }
+  }
+
+  &-group {
+    background: rgba(240, 240, 240, 0.25);
+    border-color: #1a192b;
+  }
+}
+
+.react-flow__nodesselection-rect,
+.react-flow__selection {
+  background: rgba(0, 89, 220, 0.08);
+  border: 1px dotted rgba(0, 89, 220, 0.8);
+
+  &:focus,
+  &:focus-visible {
+    outline: none;
+  }
+}
+
+.react-flow__handle {
+  width: 6px;
+  height: 6px;
+  background: #1a192b;
+  border: 1px solid white;
+  border-radius: 100%;
+
+  &.connectable {
+    cursor: crosshair;
+  }
+}

packages/core/src/styles/theme-default.css

@@ -1,83 +0,0 @@
-.react-flow__edge {
-  &.updating {
-    .react-flow__edge-path {
-      stroke: #777;
-    }
-  }
-}
-
-.react-flow__edge-text {
-  font-size: 10px;
-}
-
-.react-flow__node-default,
-.react-flow__node-input,
-.react-flow__node-output,
-.react-flow__node-group {
-  padding: 10px;
-  border-radius: 3px;
-  width: 150px;
-  font-size: 12px;
-  color: #222;
-  text-align: center;
-  border-width: 1px;
-  border-style: solid;
-  border-color: #1a192b;
-
-  &.selected,
-  &:focus,
-  &:focus-visible {
-    border: none;
-    box-shadow: 0 0 0 0.5px #1a192b;
-    outline: none;
-  }
-
-  .react-flow__handle {
-    background: #1a192b;
-  }
-}
-
-.react-flow__node-default.selectable,
-.react-flow__node-input.selectable,
-.react-flow__node-output.selectable,
-.react-flow__node-group.selectable {
-  &:hover {
-    box-shadow: 0 1px 4px 1px rgba(0, 0, 0, 0.08);
-  }
-
-  &.selected,
-  &:focus,
-  &:focus-visible {
-    border: none;
-    box-shadow: 0 0 0 0.5px #1a192b;
-    outline: none;
-  }
-}
-
-.react-flow__node-group {
-  background: rgba(240, 240, 240, 0.25);
-  border-color: #1a192b;
-}
-
-.react-flow__nodesselection-rect,
-.react-flow__selection {
-  background: rgba(0, 89, 220, 0.08);
-  border: 1px dotted rgba(0, 89, 220, 0.8);
-
-  &:focus,
-  &:focus-visible {
-    outline: none;
-  }
-}
-
-.react-flow__handle {
-  width: 6px;
-  height: 6px;
-  background: #555;
-  border: 1px solid white;
-  border-radius: 100%;
-
-  &.connectable {
-    cursor: crosshair;
-  }
-}

packages/core/src/types/general.ts

@@ -137,6 +137,7 @@ export type ReactFlowStore = {
   hasDefaultNodes: boolean;
   hasDefaultEdges: boolean;
   domNode: HTMLDivElement | null;
+  paneDragging: boolean;
 
   d3Zoom: ZoomBehavior<Element, unknown> | null;
   d3Selection: D3Selection<Element, unknown, null, undefined> | null;