{
  "version": 3,
  "sources": ["../../../src/tools-panel/tools-panel-item/hook.ts"],
  "sourcesContent": ["/**\n * WordPress dependencies\n */\nimport { usePrevious } from '@wordpress/compose';\nimport { useCallback, useEffect, useLayoutEffect, useMemo } from '@wordpress/element';\n\n/**\n * Internal dependencies\n */\nimport * as styles from '../styles';\nimport { useToolsPanelContext } from '../context';\nimport { useContextSystem } from '../../context';\nimport { useCx } from '../../utils/hooks/use-cx';\nconst noop = () => {};\nexport function useToolsPanelItem(props) {\n  const {\n    className,\n    hasValue,\n    isShownByDefault = false,\n    label,\n    panelId,\n    resetAllFilter = noop,\n    onDeselect,\n    onSelect,\n    ...otherProps\n  } = useContextSystem(props, 'ToolsPanelItem');\n  const {\n    panelId: currentPanelId,\n    menuItems,\n    registerResetAllFilter,\n    deregisterResetAllFilter,\n    registerPanelItem,\n    deregisterPanelItem,\n    flagItemCustomization,\n    isResetting,\n    shouldRenderPlaceholderItems: shouldRenderPlaceholder,\n    firstDisplayedItem,\n    lastDisplayedItem,\n    __experimentalFirstVisibleItemClass,\n    __experimentalLastVisibleItemClass\n  } = useToolsPanelContext();\n\n  // hasValue is a new function on every render, so do not add it as a\n  // dependency to the useCallback hook! If needed, we should use a ref.\n  const hasValueCallback = useCallback(hasValue, [panelId]);\n  // resetAllFilter is a new function on every render, so do not add it as a\n  // dependency to the useCallback hook! If needed, we should use a ref.\n  const resetAllFilterCallback = useCallback(resetAllFilter, [panelId]);\n  const previousPanelId = usePrevious(currentPanelId);\n  const hasMatchingPanel = currentPanelId === panelId || currentPanelId === null;\n\n  // Registering the panel item allows the panel to include it in its\n  // automatically generated menu and determine its initial checked status.\n  //\n  // This is performed in a layout effect to ensure that the panel item\n  // is registered before it is rendered preventing a rendering glitch.\n  // See: https://github.com/WordPress/gutenberg/issues/56470\n  useLayoutEffect(() => {\n    if (hasMatchingPanel && previousPanelId !== null) {\n      registerPanelItem({\n        hasValue: hasValueCallback,\n        isShownByDefault,\n        label,\n        panelId\n      });\n    }\n    return () => {\n      if (previousPanelId === null && !!currentPanelId || currentPanelId === panelId) {\n        deregisterPanelItem(label);\n      }\n    };\n  }, [currentPanelId, hasMatchingPanel, isShownByDefault, label, hasValueCallback, panelId, previousPanelId, registerPanelItem, deregisterPanelItem]);\n  useEffect(() => {\n    if (hasMatchingPanel) {\n      registerResetAllFilter(resetAllFilterCallback);\n    }\n    return () => {\n      if (hasMatchingPanel) {\n        deregisterResetAllFilter(resetAllFilterCallback);\n      }\n    };\n  }, [registerResetAllFilter, deregisterResetAllFilter, resetAllFilterCallback, hasMatchingPanel]);\n\n  // Note: `label` is used as a key when building menu item state in\n  // `ToolsPanel`.\n  const menuGroup = isShownByDefault ? 'default' : 'optional';\n  const isMenuItemChecked = menuItems?.[menuGroup]?.[label];\n  const wasMenuItemChecked = usePrevious(isMenuItemChecked);\n  const isRegistered = menuItems?.[menuGroup]?.[label] !== undefined;\n  const isValueSet = hasValue();\n  // Notify the panel when an item's value has changed except for optional\n  // items without value because the item should not cause itself to hide.\n  useEffect(() => {\n    if (!isShownByDefault && !isValueSet) {\n      return;\n    }\n    flagItemCustomization(isValueSet, label, menuGroup);\n  }, [isValueSet, menuGroup, label, flagItemCustomization, isShownByDefault]);\n\n  // Determine if the panel item's corresponding menu is being toggled and\n  // trigger appropriate callback if it is.\n  useEffect(() => {\n    // We check whether this item is currently registered as items rendered\n    // via fills can persist through the parent panel being remounted.\n    // See: https://github.com/WordPress/gutenberg/pull/45673\n    if (!isRegistered || isResetting || !hasMatchingPanel) {\n      return;\n    }\n    if (isMenuItemChecked && !isValueSet && !wasMenuItemChecked) {\n      onSelect?.();\n    }\n    if (!isMenuItemChecked && isValueSet && wasMenuItemChecked) {\n      onDeselect?.();\n    }\n  }, [hasMatchingPanel, isMenuItemChecked, isRegistered, isResetting, isValueSet, wasMenuItemChecked, onSelect, onDeselect]);\n\n  // The item is shown if it is a default control regardless of whether it\n  // has a value. Optional items are shown when they are checked or have\n  // a value.\n  const isShown = isShownByDefault ? menuItems?.[menuGroup]?.[label] !== undefined : isMenuItemChecked;\n  const cx = useCx();\n  const classes = useMemo(() => {\n    const shouldApplyPlaceholderStyles = shouldRenderPlaceholder && !isShown;\n    const firstItemStyle = firstDisplayedItem === label && __experimentalFirstVisibleItemClass;\n    const lastItemStyle = lastDisplayedItem === label && __experimentalLastVisibleItemClass;\n    return cx(styles.ToolsPanelItem, shouldApplyPlaceholderStyles && styles.ToolsPanelItemPlaceholder, !shouldApplyPlaceholderStyles && className, firstItemStyle, lastItemStyle);\n  }, [isShown, shouldRenderPlaceholder, className, cx, firstDisplayedItem, lastDisplayedItem, __experimentalFirstVisibleItemClass, __experimentalLastVisibleItemClass, label]);\n  return {\n    ...otherProps,\n    isShown,\n    shouldRenderPlaceholder,\n    className: classes\n  };\n}"],
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  "names": ["import_context"]
}