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import {
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markNodeData,
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objectAssign,
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arrayFindIndex,
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getChildState,
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reInitChecked,
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getPropertyFromData,
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isNull,
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NODE_KEY
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} from '../tool/util';
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const getStore = function(store) {
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let thisStore = store;
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return function() {
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return thisStore;
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}
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}
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let nodeIdSeed = 0;
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export default class Node {
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constructor(options) {
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this.time = new Date().getTime();
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this.id = nodeIdSeed++;
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this.text = null;
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this.checked = false;
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this.indeterminate = false;
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this.data = null;
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this.expanded = false;
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this.parentId = null;
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this.visible = true;
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this.isCurrent = false;
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for (let name in options) {
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if (options.hasOwnProperty(name)) {
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if (name === 'store') {
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this.store = getStore(options[name]);
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} else {
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this[name] = options[name];
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}
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}
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}
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if (!this.store()) {
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throw new Error('[Node]store is required!');
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}
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// internal
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this.level = 0;
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this.loaded = false;
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this.childNodesId = [];
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this.loading = false;
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this.label = getPropertyFromData(this, 'label');
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this.key = this._getKey();
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this.disabled = getPropertyFromData(this, 'disabled');
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this.nextSibling = null;
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this.previousSibling = null;
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this.icon = '';
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this._handleParentAndLevel();
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this._handleProps();
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this._handleExpand();
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this._handleCurrent();
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if (this.store().lazy) {
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this.store()._initDefaultCheckedNode(this);
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}
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this.updateLeafState();
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}
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_getKey() {
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if (!this.data || Array.isArray(this.data)) return null;
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if (typeof this.data === 'object') {
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const nodeKey = this.store().key;
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const key = this.data[nodeKey];
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if (typeof key === 'undefined') {
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throw new Error(`您配置的node-key为"${nodeKey}"，但数据中并未找到对应"${nodeKey}"属性的值，请检查node-key的配置是否合理`)
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}
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return key;
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}
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throw new Error('不合法的data数据');
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}
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_handleParentAndLevel() {
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if (this.parentId !== null) {
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let parent = this.getParent(this.parentId);
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if (this.store().isInjectParentInNode) {
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this.parent = parent;
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}
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// 由于这里做了修改，默认第一个对象不会被注册到nodesMap中，所以找不到parent会报错，所以默认parent的level是0
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if (!parent) {
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parent = {
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level: 0
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}
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} else {
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const parentChildNodes = parent.getChildNodes(parent.childNodesId);
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const index = parent.childNodesId.indexOf(this.key);
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this.nextSibling = index > -1 ? parentChildNodes[index + 1] : null;
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this.previousSibling = index > 0 ? parentChildNodes[index - 1] : null;
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}
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this.level = parent.level + 1;
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}
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}
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_handleProps() {
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const props = this.store().props;
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if (this.store().showNodeIcon) {
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if (props && typeof props.icon !== 'undefined') {
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this.icon = getPropertyFromData(this, 'icon');
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} else {
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console.warn('请配置props属性中的"icon"字段')
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}
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}
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this.store().registerNode(this);
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if (props && typeof props.isLeaf !== 'undefined') {
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const isLeaf = getPropertyFromData(this, 'isLeaf');
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if (typeof isLeaf === 'boolean') {
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this.isLeafByUser = isLeaf;
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}
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}
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}
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_handleExpand() {
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if (this.store().lazy !== true && this.data) {
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this.setData(this.data);
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if (this.store().defaultExpandAll) {
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this.expanded = true;
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}
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} else if (this.level > 0 && this.store().lazy && this.store().defaultExpandAll) {
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this.expand();
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}
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if (!Array.isArray(this.data)) {
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markNodeData(this, this.data);
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}
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if (!this.data) return;
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const defaultExpandedKeys = this.store().defaultExpandedKeys;
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const key = this.store().key;
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if (key && defaultExpandedKeys && defaultExpandedKeys.indexOf(this.key) !== -1) {
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this.expand(null, this.store().autoExpandparent);
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}
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}
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_handleCurrent() {
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const key = this.store().key;
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if (key && this.store().currentNodeKey !== undefined && this.key === this.store().currentNodeKey) {
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this.store().currentNode = this;
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this.store().currentNode.isCurrent = true;
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}
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}
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destroyStore() {
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getStore(null)
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}
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setData(data) {
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if (!Array.isArray(data)) {
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markNodeData(this, data);
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}
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this.data = data;
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this.childNodesId = [];
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let children;
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if (this.level === 0 && Array.isArray(this.data)) {
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children = this.data;
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} else {
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children = getPropertyFromData(this, 'children') || [];
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}
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for (let i = 0, j = children.length; i < j; i++) {
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this.insertChild({
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data: children[i]
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});
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}
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}
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contains(target, deep = true) {
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const walk = function(parent) {
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const children = parent.getChildNodes(parent.childNodesId) || [];
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let result = false;
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for (let i = 0, j = children.length; i < j; i++) {
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const child = children[i];
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if (child === target || (deep && walk(child))) {
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result = true;
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break;
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}
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}
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return result;
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};
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return walk(this);
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}
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remove() {
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if (this.parentId !== null) {
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const parent = this.getParent(this.parentId);
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parent.removeChild(this);
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}
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}
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insertChild(child, index, batch) {
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if (!child) throw new Error('insertChild error: child is required.');
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if (!(child instanceof Node)) {
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if (!batch) {
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const children = this.getChildren(true);
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if (children.indexOf(child.data) === -1) {
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if (typeof index === 'undefined' || index < 0) {
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children.push(child.data);
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} else {
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children.splice(index, 0, child.data);
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}
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}
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}
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objectAssign(child, {
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parentId: isNull(this.key) ? '' : this.key,
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store: this.store()
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});
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child = new Node(child);
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}
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child.level = this.level + 1;
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if (typeof index === 'undefined' || index < 0) {
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this.childNodesId.push(child.key);
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} else {
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this.childNodesId.splice(index, 0, child.key);
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}
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this.updateLeafState();
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}
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insertBefore(child, ref) {
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let index;
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if (ref) {
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index = this.childNodesId.indexOf(ref.id);
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}
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this.insertChild(child, index);
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}
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insertAfter(child, ref) {
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let index;
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if (ref) {
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index = this.childNodesId.indexOf(ref.id);
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if (index !== -1) index += 1;
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}
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this.insertChild(child, index);
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}
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removeChild(child) {
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const children = this.getChildren() || [];
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const dataIndex = children.indexOf(child.data);
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if (dataIndex > -1) {
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children.splice(dataIndex, 1);
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}
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const index = this.childNodesId.indexOf(child.key);
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if (index > -1) {
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this.store() && this.store().deregisterNode(child);
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child.parentId = null;
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this.childNodesId.splice(index, 1);
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}
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this.updateLeafState();
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}
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removeChildByData(data) {
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let targetNode = null;
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for (let i = 0; i < this.childNodesId.length; i++) {
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let node = this.getChildNodes(this.childNodesId);
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if (node[i].data === data) {
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targetNode = node[i];
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break;
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}
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}
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if (targetNode) {
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this.removeChild(targetNode);
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}
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}
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// 为了避免APP端parent嵌套结构导致报错，这里parent需要从nodesMap中获取
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getParent(parentId) {
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try {
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if (!parentId.toString()) return null;
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return this.store().nodesMap[parentId];
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} catch (error) {
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return null;
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}
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}
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// 为了避免APP端childNodes嵌套结构导致报错，这里childNodes需要从nodesMap中获取
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getChildNodes(childNodesId) {
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let childNodes = [];
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if (childNodesId.length === 0) return childNodes;
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childNodesId.forEach((key) => {
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childNodes.push(this.store().nodesMap[key]);
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})
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return childNodes;
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}
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expand(callback, expandparent) {
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const done = () => {
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if (expandparent) {
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let parent = this.getParent(this.parentId);
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while (parent && parent.level > 0) {
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parent.expanded = true;
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parent = this.getParent(parent.parentId);
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}
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}
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this.expanded = true;
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if (callback) callback();
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};
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if (this.shouldLoadData()) {
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this.loadData(function(data) {
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if (Array.isArray(data)) {
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if (this.checked) {
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this.setChecked(true, true);
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} else if (!this.store().checkStrictly) {
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reInitChecked(this);
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}
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done();
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}
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});
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} else {
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done();
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}
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}
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doCreateChildren(array, defaultProps = {}) {
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array.forEach((item) => {
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this.insertChild(objectAssign({
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data: item
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}, defaultProps), undefined, true);
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});
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}
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collapse() {
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this.expanded = false;
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}
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shouldLoadData() {
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return this.store().lazy === true && this.store().load && !this.loaded;
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}
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updateLeafState() {
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if (this.store().lazy === true && this.loaded !== true && typeof this.isLeafByUser !== 'undefined') {
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this.isLeaf = this.isLeafByUser;
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return;
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}
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const childNodesId = this.childNodesId;
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if (!this.store().lazy || (this.store().lazy === true && this.loaded === true)) {
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this.isLeaf = !childNodesId || childNodesId.length === 0;
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return;
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}
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this.isLeaf = false;
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}
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setChecked(value, deep, recursion, passValue) {
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this.indeterminate = value === 'half';
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this.checked = value === true;
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if (this.checked && this.store().expandOnCheckNode) {
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this.expand(null, true)
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}
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if (this.store().checkStrictly) return;
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if (this.store().showRadio) return;
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if (!(this.shouldLoadData() && !this.store().checkDescendants)) {
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let childNodes = this.getChildNodes(this.childNodesId);
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let {
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all,
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allWithoutDisable
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} = getChildState(childNodes);
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if (!this.isLeaf && (!all && allWithoutDisable)) {
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this.checked = false;
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value = false;
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}
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const handleDescendants = () => {
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if (deep) {
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let childNodes = this.getChildNodes(this.childNodesId)
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for (let i = 0, j = childNodes.length; i < j; i++) {
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const child = childNodes[i];
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passValue = passValue || value !== false;
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const isCheck = child.disabled ? child.checked : passValue;
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child.setChecked(isCheck, deep, true, passValue);
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}
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const {
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half,
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all
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} = getChildState(childNodes);
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if (!all) {
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this.checked = all;
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this.indeterminate = half;
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}
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}
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};
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if (this.shouldLoadData()) {
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this.loadData(() => {
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handleDescendants();
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reInitChecked(this);
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}, {
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checked: value !== false
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});
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return;
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} else {
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handleDescendants();
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}
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}
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if (!this.parentId) return;
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let parent = this.getParent(this.parentId);
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if (parent && parent.level === 0) return;
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if (!recursion) {
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reInitChecked(parent);
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}
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}
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setRadioChecked(value) {
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const allNodes = this.store()._getAllNodes().sort((a, b) => b.level - a.level);
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allNodes.forEach(node => node.setChecked(false, false));
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this.checked = value === true;
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}
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getChildren(forceInit = false) {
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if (this.level === 0) return this.data;
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const data = this.data;
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|
if (!data) return null;
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const props = this.store().props;
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let children = 'children';
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if (props) {
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children = props.children || 'children';
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}
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if (data[children] === undefined) {
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data[children] = null;
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}
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if (forceInit && !data[children]) {
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data[children] = [];
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}
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return data[children];
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}
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|
updateChildren() {
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|
let childNodes = this.getChildNodes(this.childNodesId);
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|
const newData = this.getChildren() || [];
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|
|
const oldData = childNodes.map((node) => node.data);
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const newDataMap = {};
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const newNodes = [];
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newData.forEach((item, index) => {
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const key = item[NODE_KEY];
|
|
|
const isNodeExists = !!key && arrayFindIndex(oldData, data => data[NODE_KEY] === key) >= 0;
|
|
|
if (isNodeExists) {
|
|
|
newDataMap[key] = {
|
|
|
index,
|
|
|
data: item
|
|
|
};
|
|
|
} else {
|
|
|
newNodes.push({
|
|
|
index,
|
|
|
data: item
|
|
|
});
|
|
|
}
|
|
|
});
|
|
|
|
|
|
if (!this.store().lazy) {
|
|
|
oldData.forEach((item) => {
|
|
|
if (!newDataMap[item[NODE_KEY]]) this.removeChildByData(item);
|
|
|
});
|
|
|
}
|
|
|
|
|
|
newNodes.forEach(({
|
|
|
index,
|
|
|
data
|
|
|
}) => {
|
|
|
this.insertChild({
|
|
|
data
|
|
|
}, index);
|
|
|
});
|
|
|
|
|
|
this.updateLeafState();
|
|
|
}
|
|
|
|
|
|
loadData(callback, defaultProps = {}) {
|
|
|
if (this.store().lazy === true &&
|
|
|
this.store().load && !this.loaded &&
|
|
|
(!this.loading || Object.keys(defaultProps).length)
|
|
|
) {
|
|
|
this.loading = true;
|
|
|
|
|
|
const resolve = (children) => {
|
|
|
this.loaded = true;
|
|
|
this.loading = false;
|
|
|
this.childNodesId = [];
|
|
|
this.doCreateChildren(children, defaultProps);
|
|
|
this.updateLeafState();
|
|
|
|
|
|
callback && callback.call(this,children);
|
|
|
};
|
|
|
|
|
|
this.store().load(this, resolve);
|
|
|
} else {
|
|
|
callback && callback.call(this);
|
|
|
}
|
|
|
}
|
|
|
}
|
