Tree & MessageBox: fix type definition (#12214)

* MessageBox: fix ElMessageBoxOptions.message

* Tree: fix type definition

types/message-box.d.ts

-import Vue from 'vue'
+import Vue, { VNode } from 'vue'
 import { MessageType } from './message'
 
 export type MessageBoxCloseAction = 'confirm' | 'cancel' | 'close'
@@ -47,7 +47,7 @@ export interface ElMessageBoxOptions {
   title?: string
 
   /** Content of the MessageBox */
-  message?: string
+  message?: string | VNode
 
   /** Message type, used for icon display */
   type?: MessageType

types/tree.d.ts

-import { CreateElement, VNode } from 'vue'
-import { ElementUIComponent } from './component'
-
-/** The node of the tree */
-export interface TreeNode {
-  id?: any,
-  label?: string,
-  isLeaf?: boolean,
-  children?: TreeNode[]
+import { CreateElement, VNode } from 'vue';
+import { ElementUIComponent } from './component';
+
+export interface TreeData {
+  id?: any;
+  label?: string;
+  isLeaf?: boolean;
+  children?: TreeData[];
 }
 
-export interface RenderContent {
-  /**
-   * Render function for a specific node
-   *
-   * @param h The render function
-   * @param data The data object containing the specific node
-   */
-  (h: CreateElement, data: { node: TreeNode }): VNode
+export interface TreeNode<K, D> {
+  checked: boolean;
+  childNodes: TreeNode<K, D>[];
+  data: D;
+  expanded: boolean;
+  id: number;
+  indeterminate: boolean;
+  isLeaf: boolean;
+  level: number;
+  loaded: boolean;
+  loading: boolean;
+  parent: TreeNode<K, D> | null;
+  store: any;
+  visible: boolean;
+  disabled: boolean;
+  icon: string;
+  key: K;
+  nextSibling: TreeNode<K, D> | null;
+  previousSibling: TreeNode<K, D> | null;
 }
 
-export interface FilterNodeMethod {
-  /**
-   * Filter method for each node
-   *
-   * @param value The query string
-   * @param data The original data object
-   * @param node Tree node
-   */
-  (value: string, data: TreeNode, node: any): boolean
-}
-
-export interface AllowDragMethod {
-  /**
-   * Function executed before dragging a node
-   *
-   * @param node The node to be dragged
-   */
-  (node: any): boolean
-}
-
-export interface AllowDropMethod {
-  /**
-   * Function executed before the dragging node is dropped
-   *
-   * @param draggingNode The dragging node
-   * @param dropNode The target node
-   * @param type Drop type
-   */
-  (draggingNode: any, dropNode: any, type: string): boolean
+/** incomplete, you can convert to any to use other properties */
+export interface TreeStore<K, D> {
+  _getAllNodes: () => TreeNode<K, D>[];
 }
 
 /** Tree Component */
-export declare class ElTree extends ElementUIComponent {
+export declare class ElTree<K = any, D = TreeData> extends ElementUIComponent {
+  /** TreeStore */
+  store: TreeStore<K, D>;
+
   /** Tree data */
-  data: TreeNode[]
+  data: D[];
 
   /** Text displayed when data is void */
-  emptyText: string
+  emptyText: string;
 
   /** Unique identity key name for nodes, its value should be unique across the whole tree */
-  nodeKey: string
+  nodeKey: string;
 
   /** Configuration options, see the following table */
-  props: object
+  props: object;
 
   /** Method for loading subtree data */
-  load: (node: TreeNode, resolve: Function) => void
+  load: (data: D, resolve: Function) => void;
 
-  /** Render function for tree node */
-  renderContent: RenderContent
+  /**
+   * Render function for a specific node
+   *
+   * @param h The render function
+   */
+  renderContent: (h: CreateElement, context: { node: TreeNode<K, D>; data: D; store: TreeStore<K, D> }) => VNode;
 
   /** Whether current node is highlighted */
-  highlightCurrent: boolean
+  highlightCurrent: boolean;
 
   /** Whether to expand all nodes by default */
-  defaultExpandAll: boolean
+  defaultExpandAll: boolean;
 
   /** Whether to expand or collapse node when clicking on the node. If false, then expand or collapse node only when clicking on the arrow icon. */
-  expandOnClickNode: boolean
+  expandOnClickNode: boolean;
 
   /** Whether to check or uncheck node when clicking on the node, if false, the node can only be checked or unchecked by clicking on the checkbox. */
-  checkOnClickNode: boolean
+  checkOnClickNode: boolean;
 
   /** Whether to expand father node when a child node is expanded */
-  autoExpandParent: boolean
+  autoExpandParent: boolean;
 
   /** Array of keys of initially expanded nodes */
-  defaultExpandedKeys: any[]
+  defaultExpandedKeys: K[];
 
   /** Whether node is selectable */
-  showCheckbox: boolean
+  showCheckbox: boolean;
 
   /** Whether checked state of a node not affects its father and child nodes when show-checkbox is true */
-  checkStrictly: boolean
+  checkStrictly: boolean;
 
   /** Array of keys of initially checked nodes */
-  defaultCheckedKeys: any[]
+  defaultCheckedKeys: K[];
 
-  /** This function will be executed on each node when use filter method. If return false, tree node will be hidden. */
-  filterNodeMethod: FilterNodeMethod
+  /**
+   * This function will be executed on each node when use filter method. If return false, tree node will be hidden.
+   *
+   * @param value The query string
+   * @param data The original data object
+   * @param node Tree node
+   */
+  filterNodeMethod: (value: string, data: D, node: TreeNode<K, D>) => boolean;
 
   /** Whether only one node among the same level can be expanded at one time */
-  accordion: boolean
+  accordion: boolean;
 
   /** Horizontal indentation of nodes in adjacent levels in pixels */
-  indent: number
+  indent: number;
 
   /** Whether enable tree nodes drag and drop */
-  draggable: boolean
+  draggable: boolean;
 
-  /** Function to be executed before dragging a node */
-  allowDrag: AllowDragMethod
+  /**
+   * Function to be executed before dragging a node
+   *
+   * @param node The node to be dragged
+   */
+  allowDrag: (node: TreeNode<K, D>) => boolean;
 
-  /** Function to be executed before the dragging node is dropped */
-  allowDrop: AllowDropMethod
+  /**
+   * Function to be executed before the dragging node is dropped
+   *
+   * @param draggingNode The dragging node
+   * @param dropNode The target node
+   * @param type Drop type
+   */
+  allowDrop: (draggingNode: TreeNode<K, D>, dropNode: TreeNode<K, D>, type: 'prev' | 'inner' | 'next') => boolean;
 
   /**
    * Filter all tree nodes. Filtered nodes will be hidden
    *
    * @param value The value to be used as first parameter for `filter-node-method`
    */
-  filter (value: any): void
+  filter(value: any): void;
 
   /**
    * Update the children of the node which specified by the key
-   * 
+   *
    * @param key the key of the node which children will be updated
    * @param data the children data
    */
-  updateKeyChildren (key: any, data: TreeNode[]): void
+  updateKeyChildren(key: K, data: D[]): void;
 
   /**
    * If the node can be selected (`show-checkbox` is `true`), it returns the currently selected array of nodes
@@ -136,7 +143,7 @@ export declare class ElTree extends ElementUIComponent {
    * @param leafOnly If the `leafOnly` is `true`, it only returns the currently selected array of sub-nodes
    * @param includeHalfChecked If the `includeHalfChecked` is `true`, the return value contains halfchecked nodes
    */
-  getCheckedNodes (leafOnly?: boolean, includeHalfChecked?: boolean): TreeNode[]
+  getCheckedNodes(leafOnly?: boolean, includeHalfChecked?: boolean): D[];
 
   /**
    * Set certain nodes to be checked. Only works when `node-key` is assigned
@@ -144,14 +151,14 @@ export declare class ElTree extends ElementUIComponent {
    * @param nodes An array of nodes to be checked
    * @param leafOnly If the parameter is true, it only returns the currently selected array of sub-nodes
    */
-  setCheckedNodes (nodes: TreeNode[], leafOnly?: boolean): void
+  setCheckedNodes(data: D[], leafOnly?: boolean): void;
 
   /**
    * If the node can be selected (`show-checkbox` is `true`), it returns the currently selected array of nodes' keys
    *
    * @param leafOnly If the `leafOnly` is `true`, it only returns the currently selected array of sub-nodes
    */
-  getCheckedKeys (leafOnly?: boolean): any[]
+  getCheckedKeys(leafOnly?: boolean): K[];
 
   /**
    * Set certain nodes to be checked. Only works when `node-key` is assigned
@@ -159,7 +166,7 @@ export declare class ElTree extends ElementUIComponent {
    * @param keys An array of node's keys to be checked
    * @param leafOnly If the parameter is true, it only returns the currently selected array of sub-nodes
    */
-  setCheckedKeys (keys: any[], leafOnly?: boolean): void
+  setCheckedKeys(keys: K[], leafOnly?: boolean): void;
 
   /**
    * Set node to be checked or not. Only works when `node-key` is assigned
@@ -168,77 +175,77 @@ export declare class ElTree extends ElementUIComponent {
    * @param checked Indicating the node checked or not
    * @param deep Indicating whether to checked state deeply or not
    */
-  setChecked (data: TreeNode | any, checked: boolean, deep: boolean): void
+  setChecked(data: D | K, checked: boolean, deep: boolean): void;
 
   /**
    * If the node can be selected (`show-checkbox` is `true`), it returns the currently half selected array of nodes
    */
-  getHalfCheckedNodes (): void
+  getHalfCheckedNodes(): D[];
 
   /**
    * If the node can be selected (`show-checkbox` is `true`), it returns the currently half selected array of nodes' keys
    */
-  getHalfCheckedKeys (): void;
+  getHalfCheckedKeys(): K[];
 
   /**
    * Return the highlight node's key (null if no node is highlighted)
    */
-  getCurrentKey (): any
+  getCurrentKey(): K;
 
   /**
    * Set highlighted node by key, only works when node-key is assigned
    *
    * @param key The node's key to be highlighted
    */
-  setCurrentKey (key: any): void
+  setCurrentKey(key: K): void;
 
   /**
    * Return the highlight node (null if no node is highlighted)
    */
-  getCurrentNode (): TreeNode
+  getCurrentNode(): D;
 
   /**
    * Set highlighted node, only works when node-key is assigned
    *
    * @param node The node to be highlighted
    */
-  setCurrentNode (node: TreeNode): void
+  setCurrentNode(data: D): void;
 
   /**
    * Get node by node key or node data
-   * 
+   *
    * @param by node key or node data
    */
-  getNode (by: TreeNode | any): TreeNode
+  getNode(by: D | K): D;
 
   /**
    * Remove node by key or node data or node instance
-   * 
+   *
    * @param by key or node data or node instance
    */
-  remove (by: TreeNode | any): void
+  remove(by: D | K): void;
 
   /**
    * Append a child node to specified node
-   * 
+   *
    * @param childData the data of appended node
    * @param parent key or node data or node instance of the parent node
    */
-  append (childData: TreeNode, parent: TreeNode | any): void
+  append(childData: D, parent: D | K): void;
 
   /**
    * insert a node before specified node
-   * 
+   *
    * @param data the data of inserted node
    * @param ref key or node data or node instance of the reference node
    */
-  insertBefore (data: TreeNode, ref: TreeNode | any): void
+  insertBefore(data: D, ref: D | K): void;
 
   /**
    * insert a node after specified node
-   * 
+   *
    * @param data the data of inserted node
    * @param ref key or node data or node instance of the reference node
    */
-  insertAfter (data: TreeNode, ref: TreeNode | any): void
+  insertAfter(data: D, ref: D | K): void;
 }