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element-plus

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A Component Library for Vue 3

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{"version":3,"file":"virtual-tree.mjs","sources":["../../../../../../packages/components/tree-v2/src/virtual-tree.ts"],"sourcesContent":["import {\n buildProps,\n definePropType,\n iconPropType,\n isBoolean,\n mutable,\n} from '@element-plus/utils'\n\nimport type { CheckboxValueType } from '@element-plus/components/checkbox'\nimport type { InjectionKey } from 'vue'\nimport type { TreeNodeData } from '@element-plus/components/tree/src/tree.type'\nimport type {\n CheckedInfo,\n FilterMethod,\n TreeContext,\n TreeData,\n TreeKey,\n TreeNode,\n TreeOptionProps,\n} from './types'\n\n// constants\nexport const ROOT_TREE_INJECTION_KEY: InjectionKey<TreeContext> = Symbol()\nconst EMPTY_NODE = {\n key: -1,\n level: -1,\n data: {},\n} as const\n\n// enums\nexport enum TreeOptionsEnum {\n KEY = 'id',\n LABEL = 'label',\n CHILDREN = 'children',\n DISABLED = 'disabled',\n CLASS = '',\n}\n\nexport const enum SetOperationEnum {\n ADD = 'add',\n DELETE = 'delete',\n}\n\nconst itemSize = {\n type: Number,\n default: 26,\n}\n\n// props\nexport const treeProps = buildProps({\n data: {\n type: definePropType<TreeData>(Array),\n default: () => mutable([] as const),\n },\n emptyText: {\n type: String,\n },\n height: {\n type: Number,\n default: 200,\n },\n props: {\n type: definePropType<TreeOptionProps>(Object),\n default: () =>\n mutable({\n children: TreeOptionsEnum.CHILDREN,\n label: TreeOptionsEnum.LABEL,\n disabled: TreeOptionsEnum.DISABLED,\n value: TreeOptionsEnum.KEY,\n class: TreeOptionsEnum.CLASS,\n } as const),\n },\n highlightCurrent: Boolean,\n showCheckbox: Boolean,\n defaultCheckedKeys: {\n type: definePropType<TreeKey[]>(Array),\n default: () => mutable([] as const),\n },\n // Whether checked state of a node not affects its father and\n // child nodes when show-checkbox is true\n checkStrictly: Boolean,\n defaultExpandedKeys: {\n type: definePropType<TreeKey[]>(Array),\n default: () => mutable([] as const),\n },\n indent: {\n type: Number,\n default: 16,\n },\n itemSize,\n icon: {\n type: iconPropType,\n },\n expandOnClickNode: {\n type: Boolean,\n default: true,\n },\n checkOnClickNode: Boolean,\n checkOnClickLeaf: {\n type: Boolean,\n default: true,\n },\n currentNodeKey: {\n type: definePropType<TreeKey>([String, Number]),\n },\n // TODO need to optimization\n accordion: Boolean,\n filterMethod: {\n type: definePropType<FilterMethod>(Function),\n },\n // Performance mode will increase memory usage, but scrolling will be smoother\n perfMode: {\n type: Boolean,\n default: true,\n },\n /**\n * @description always show scrollbar\n */\n scrollbarAlwaysOn: Boolean,\n} as const)\n\nexport const treeNodeProps = buildProps({\n node: {\n type: definePropType<TreeNode>(Object),\n default: () => mutable(EMPTY_NODE),\n },\n expanded: Boolean,\n checked: Boolean,\n indeterminate: Boolean,\n showCheckbox: Boolean,\n disabled: Boolean,\n current: Boolean,\n hiddenExpandIcon: Boolean,\n itemSize,\n} as const)\n\nexport const treeNodeContentProps = buildProps({\n node: {\n type: definePropType<TreeNode>(Object),\n required: true,\n },\n} as const)\n\n// emits\nexport const NODE_CLICK = 'node-click'\nexport const NODE_DROP = 'node-drop'\nexport const NODE_EXPAND = 'node-expand'\nexport const NODE_COLLAPSE = 'node-collapse'\nexport const CURRENT_CHANGE = 'current-change'\nexport const NODE_CHECK = 'check'\nexport const NODE_CHECK_CHANGE = 'check-change'\nexport const NODE_CONTEXTMENU = 'node-contextmenu'\n\nexport const treeEmits = {\n [NODE_CLICK]: (data: TreeNodeData, node: TreeNode, e: MouseEvent) =>\n data && node && e,\n [NODE_DROP]: (data: TreeNodeData, node: TreeNode, e: DragEvent) =>\n data && node && e,\n [NODE_EXPAND]: (data: TreeNodeData, node: TreeNode) => data && node,\n [NODE_COLLAPSE]: (data: TreeNodeData, node: TreeNode) => data && node,\n [CURRENT_CHANGE]: (data: TreeNodeData, node: TreeNode) => data && node,\n [NODE_CHECK]: (data: TreeNodeData, checkedInfo: CheckedInfo) =>\n data && checkedInfo,\n [NODE_CHECK_CHANGE]: (data: TreeNodeData, checked: boolean) =>\n data && isBoolean(checked),\n [NODE_CONTEXTMENU]: (evt: Event, data: TreeNodeData, node: TreeNode) =>\n evt && data && node,\n}\n\nexport const treeNodeEmits = {\n click: (node: TreeNode, e: MouseEvent) => !!(node && e),\n drop: (node: TreeNode, e: DragEvent) => !!(node && e),\n toggle: (node: TreeNode) => !!node,\n check: (node: TreeNode, checked: CheckboxValueType) =>\n node && 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