@tldraw/editor/dist-esm/lib/editor/managers/FocusManager/FocusManager.mjs.map

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../../../src/lib/editor/managers/FocusManager/FocusManager.ts"],
  "sourcesContent": ["import type { Editor } from '../../Editor'\n\n/**\n * A manager for ensuring correct focus across the editor.\n * It will listen for changes in the instance state to make sure the\n * container is focused when the editor is focused.\n * Also, it will make sure that the focus is on things like text\n * labels when the editor is in editing mode.\n *\n * @internal\n */\nexport class FocusManager {\n\tprivate disposeSideEffectListener?: () => void\n\n\tconstructor(\n\t\tpublic editor: Editor,\n\t\tautoFocus?: boolean\n\t) {\n\t\tthis.disposeSideEffectListener = editor.sideEffects.registerAfterChangeHandler(\n\t\t\t'instance',\n\t\t\t(prev, next) => {\n\t\t\t\tif (prev.isFocused !== next.isFocused) {\n\t\t\t\t\tthis.updateContainerClass()\n\t\t\t\t}\n\t\t\t}\n\t\t)\n\n\t\tconst currentFocusState = editor.getInstanceState().isFocused\n\t\tif (autoFocus !== currentFocusState) {\n\t\t\teditor.updateInstanceState({ isFocused: !!autoFocus })\n\t\t}\n\t\tthis.updateContainerClass()\n\n\t\tdocument.body.addEventListener('keydown', this.handleKeyDown.bind(this))\n\t\tdocument.body.addEventListener('mousedown', this.handleMouseDown.bind(this))\n\t}\n\n\t/**\n\t * The editor's focus state and the container's focus state\n\t * are not necessarily always in sync. For that reason we\n\t * can't rely on the css `:focus` or `:focus-within` selectors to style the\n\t * editor when it is in focus.\n\t *\n\t * For that reason we synchronize the editor's focus state with a\n\t * special class on the container: tl-container__focused\n\t */\n\tprivate updateContainerClass() {\n\t\tconst container = this.editor.getContainer()\n\t\tconst instanceState = this.editor.getInstanceState()\n\n\t\tif (instanceState.isFocused) {\n\t\t\tcontainer.classList.add('tl-container__focused')\n\t\t} else {\n\t\t\tcontainer.classList.remove('tl-container__focused')\n\t\t}\n\t\tcontainer.classList.add('tl-container__no-focus-ring')\n\t}\n\n\tprivate handleKeyDown(keyEvent: KeyboardEvent) {\n\t\tconst container = this.editor.getContainer()\n\t\tif (this.editor.isIn('select.editing_shape')) return\n\t\tif (document.activeElement === container && this.editor.getSelectedShapeIds().length > 0) return\n\t\tif (['Tab', 'ArrowUp', 'ArrowDown'].includes(keyEvent.key)) {\n\t\t\tcontainer.classList.remove('tl-container__no-focus-ring')\n\t\t}\n\t}\n\n\tprivate handleMouseDown() {\n\t\tconst container = this.editor.getContainer()\n\t\tcontainer.classList.add('tl-container__no-focus-ring')\n\t}\n\n\tfocus() {\n\t\tthis.editor.getContainer().focus()\n\t}\n\n\tblur() {\n\t\tthis.editor.complete() // stop any interaction\n\t\tthis.editor.getContainer().blur() // blur the container\n\t}\n\n\tdispose() {\n\t\tdocument.body.removeEventListener('keydown', this.handleKeyDown.bind(this))\n\t\tdocument.body.removeEventListener('mousedown', this.handleMouseDown.bind(this))\n\t\tthis.disposeSideEffectListener?.()\n\t}\n}\n"],
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}