Fix 'style panel doesn't always disappear if you switch to the hand/laser tools' (#2886)

We had some bad logic in `useRelevantStyles` explicitly allowing an
opacity-slider to be rendered at all times when there is at least one
shape selected.

This shouldn't be the case when the editor is in non-shape-focused tools
like the move tool and the laser pointer tool. I refactored the hook
slightly to make it easier to express the correct logic. See the comment
for a more detailed description.

### Change Type

- [x] `patch` — Bug fix


[^1]: publishes a `patch` release, for devDependencies use `internal`
[^2]: will not publish a new version


### Release Notes

- Fixes an bug causing the opacity slider to show up in the move tool
and laser pointer tool.

packages/editor/src/lib/editor/Editor.ts

@@ -7168,9 +7168,8 @@ export class Editor extends EventEmitter<TLEventMap> {
 	 *
 	 * @internal
 	 */
-	private _selectionSharedStyles = computed<ReadonlySharedStyleMap>(
+	@computed
-		'_selectionSharedStyles',
+	private _getSelectionSharedStyles(): ReadonlySharedStyleMap {
-		() => {
 		const selectedShapes = this.getSelectedShapes()
 
 		const sharedStyles = new SharedStyleMap()
@@ -7180,7 +7179,6 @@ export class Editor extends EventEmitter<TLEventMap> {
 
 		return sharedStyles
 	}
-	)
 
 	/** @internal */
 	getStyleForNextShape<T>(style: StyleProp<T>): T {
@@ -7213,7 +7211,7 @@ export class Editor extends EventEmitter<TLEventMap> {
 		// If we're in selecting and if we have a selection, return the shared styles from the
 		// current selection
 		if (this.isIn('select') && this.getSelectedShapeIds().length > 0) {
-			return this._selectionSharedStyles.get()
+			return this._getSelectionSharedStyles()
 		}
 
 		// If the current tool is associated with a shape, return the styles for that shape.

packages/tldraw/api/api.json

@@ -23513,7 +23513,7 @@
               "text": ";"
             }
           ],
-          "fileUrlPath": "packages/tldraw/src/lib/ui/hooks/useRevelantStyles.ts",
+          "fileUrlPath": "packages/tldraw/src/lib/ui/hooks/useRelevantStyles.ts",
           "returnTypeTokenRange": {
             "startIndex": 5,
             "endIndex": 7

packages/tldraw/src/index.ts

@@ -81,7 +81,7 @@ export { useKeyboardShortcuts } from './lib/ui/hooks/useKeyboardShortcuts'
 export { useLocalStorageState } from './lib/ui/hooks/useLocalStorageState'
 export { useMenuIsOpen } from './lib/ui/hooks/useMenuIsOpen'
 export { useReadonly } from './lib/ui/hooks/useReadonly'
-export { useRelevantStyles } from './lib/ui/hooks/useRevelantStyles'
+export { useRelevantStyles } from './lib/ui/hooks/useRelevantStyles'
 export {
 	toolbarItem,
 	useToolbarSchema,

packages/tldraw/src/lib/ui/components/MobileStylePanel.tsx

@@ -7,7 +7,7 @@ import {
 } from '@tldraw/editor'
 import { useCallback } from 'react'
 import { useTldrawUiComponents } from '../context/components'
-import { useRelevantStyles } from '../hooks/useRevelantStyles'
+import { useRelevantStyles } from '../hooks/useRelevantStyles'
 import { useTranslation } from '../hooks/useTranslation/useTranslation'
 import { TldrawUiButton } from './primitives/Button/TldrawUiButton'
 import { TldrawUiButtonIcon } from './primitives/Button/TldrawUiButtonIcon'

packages/tldraw/src/lib/ui/components/StylePanel/DefaultStylePanel.tsx

@@ -1,7 +1,7 @@
 import { useEditor } from '@tldraw/editor'
 import classNames from 'classnames'
 import { memo, useCallback } from 'react'
-import { useRelevantStyles } from '../../hooks/useRevelantStyles'
+import { useRelevantStyles } from '../../hooks/useRelevantStyles'
 import { DefaultStylePanelContent } from './DefaultStylePanelContent'
 
 /** @public */

packages/tldraw/src/lib/ui/components/StylePanel/DefaultStylePanelContent.tsx

@@ -13,7 +13,6 @@ import {
 	ReadonlySharedStyleMap,
 	StyleProp,
 	TLArrowShapeArrowheadStyle,
-	TLDefaultVerticalAlignStyle,
 	minBy,
 	useEditor,
 	useValue,
@@ -21,7 +20,7 @@ import {
 import React from 'react'
 import { STYLES } from '../../../styles'
 import { useUiEvents } from '../../context/events'
-import { useRelevantStyles } from '../../hooks/useRevelantStyles'
+import { useRelevantStyles } from '../../hooks/useRelevantStyles'
 import { useTranslation } from '../../hooks/useTranslation/useTranslation'
 import { TldrawUiButton } from '../primitives/Button/TldrawUiButton'
 import { TldrawUiButtonIcon } from '../primitives/Button/TldrawUiButtonIcon'
@@ -201,7 +200,7 @@ function TextStylePickerSet({ styles }: { styles: ReadonlySharedStyleMap }) {
 								<TldrawUiButtonIcon icon="vertical-align-center" />
 							</TldrawUiButton>
 						) : (
-							<DropdownPicker<TLDefaultVerticalAlignStyle>
+							<DropdownPicker
 								type="icon"
 								id="geo-vertical-alignment"
 								uiType="verticalAlign"

packages/tldraw/src/lib/ui/components/StylePanel/DoubleDropdownPicker.tsx

@@ -82,9 +82,9 @@ function _DoubleDropdownPicker<T extends string>({
 					</TldrawUiDropdownMenuTrigger>
 					<TldrawUiDropdownMenuContent side="bottom" align="end" sideOffset={0} alignOffset={-2}>
 						<div className="tlui-buttons__grid">
-							{itemsA.map((item) => {
+							{itemsA.map((item, i) => {
 								return (
-									<TldrawUiDropdownMenuItem data-testid={`style.${uiTypeA}.${item.value}`}>
+									<TldrawUiDropdownMenuItem key={i} data-testid={`style.${uiTypeA}.${item.value}`}>
 										<TldrawUiButton
 											type="icon"
 											key={item.value}

packages/tldraw/src/lib/ui/hooks/useRelevantStyles.ts

@@ -24,8 +24,8 @@ export function useRelevantStyles(stylesToCheck = selectToolStyles): ReadonlySha
 		'getRelevantStyles',
 		() => {
 			const styles = new SharedStyleMap(editor.getSharedStyles())
-			const hasShape =
+			const isInShapeSpecificTool = !!editor.root.getCurrent()?.shapeType
-				editor.getSelectedShapeIds().length > 0 || !!editor.root.getCurrent()?.shapeType
+			const hasShapesSelected = editor.isIn('select') && editor.getSelectedShapeIds().length > 0
 
 			if (styles.size === 0 && editor.isIn('select') && editor.getSelectedShapeIds().length === 0) {
 				for (const style of stylesToCheck) {
@@ -33,8 +33,16 @@ export function useRelevantStyles(stylesToCheck = selectToolStyles): ReadonlySha
 				}
 			}
 
-			if (styles.size === 0 && !hasShape) return null
+			if (isInShapeSpecificTool || hasShapesSelected || styles.size > 0) {
+				// If size is 0 we may still want to return an empty styles map to allow
+				// the opacity slider to show up.
+				// This can happen in two situations:
+				// 1. When the user is in the select tool and has multiple shapes selected but they have no supported styles (beyond opacity).
+				// 2. When the user is in a shape-specific tool and the shape has no supported styles (beyond opacity obvs).
 				return styles
+			}
+
+			return null
 		},
 		[editor]
 	)