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tree-node.ts
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import { TitleContent, isI18nData } from '@alilc/lowcode-types';
import { computed, obx, intl, makeObservable, action } from '@alilc/lowcode-editor-core';
import { Node, DocumentModel, isLocationChildrenDetail, LocationChildrenDetail, Designer } from '@alilc/lowcode-designer';
import { Tree } from './tree';
/**
* 大纲树过滤结果
*/
export interface FilterResult {
// 过滤条件是否生效
filterWorking: boolean;
// 命中子节点
matchChild: boolean;
// 命中本节点
matchSelf: boolean;
// 关键字
keywords: string;
}
export default class TreeNode {
get id(): string {
return this.node.id;
}
/**
* 是否可以展开
*/
get expandable(): boolean {
if (this.locked) return false;
return this.hasChildren() || this.hasSlots() || this.dropDetail?.index != null;
}
/**
* 插入"线"位置信息
*/
@computed get dropDetail(): LocationChildrenDetail | undefined | null {
const loc = this.node.document.dropLocation;
return loc && this.isResponseDropping() && isLocationChildrenDetail(loc.detail) ? loc.detail : null;
}
@computed get depth(): number {
return this.node.zLevel;
}
isRoot(includeOriginalRoot = false) {
return this.tree.root === this || (includeOriginalRoot && this.tree.document.rootNode === this.node);
}
/**
* 是否是响应投放区
*/
isResponseDropping(): boolean {
const loc = this.node.document.dropLocation;
if (!loc) {
return false;
}
return loc.target === this.node;
}
isFocusingNode(): boolean {
const loc = this.node.document.dropLocation;
if (!loc) {
return false;
}
return (
isLocationChildrenDetail(loc.detail) && loc.detail.focus?.type === 'node' && loc.detail.focus.node === this.node
);
}
/**
* 默认为折叠状态
* 在初始化根节点时，设置为展开状态
*/
@obx.ref private _expanded = false;
get expanded(): boolean {
return this.isRoot(true) || (this.expandable && this._expanded);
}
setExpanded(value: boolean) {
this._expanded = value;
}
@computed get detecting() {
return this.designer.detecting.current === this.node;
}
@computed get hidden(): boolean {
const cv = this.node.isConditionalVisible();
if (cv == null) {
return !this.node.getVisible();
}
return !cv;
}
setHidden(flag: boolean) {
if (this.node.conditionGroup) {
return;
}
this.node.setVisible(!flag);
}
@computed get locked(): boolean {
return this.node.isLocked;
}
setLocked(flag: boolean) {
this.node.lock(flag);
}
@computed get selected(): boolean {
// TODO: check is dragging
const { selection } = this.document;
return selection.has(this.node.id);
}
@computed get title(): TitleContent {
return this.node.title;
}
@computed get titleLabel() {
let { title } = this;
if (!title) {
return '';
}
if ((title as any).label) {
title = (title as any).label;
}
if (typeof title === 'string') {
return title;
}
if (isI18nData(title)) {
return intl(title) as string;
}
return this.node.componentName;
}
setTitleLabel(label: string) {
const origLabel = this.titleLabel;
if (label === origLabel) {
return;
}
if (label === '') {
this.node.getExtraProp('title', false)?.remove();
} else {
this.node.getExtraProp('title', true)?.setValue(label);
}
}
get icon() {
return this.node.componentMeta.icon;
}
@computed get parent(): TreeNode | null {
const { parent } = this.node;
if (parent) {
return this.tree.getTreeNode(parent);
}
return null;
}
@computed get slots(): TreeNode[] {
// todo: shallowEqual
return this.node.slots.map((node) => this.tree.getTreeNode(node));
}
@computed get children(): TreeNode[] | null {
return this.node.children?.map((node) => this.tree.getTreeNode(node)) || null;
}
/**
* 是否是容器，允许子节点拖入
*/
isContainer(): boolean {
return this.node.isContainer();
}
/**
* 判断是否有"插槽"
*/
hasSlots(): boolean {
return this.node.hasSlots();
}
hasChildren(): boolean {
return !!(this.isContainer() && this.node.children?.notEmpty());
}
select(isMulti: boolean) {
const { node } = this;
const { selection } = node.document;
if (isMulti) {
selection.add(node.id);
} else {
selection.select(node.id);
}
}
/**
* 展开节点，支持依次展开父节点
*/
expand(tryExpandParents = false) {
// 这边不能直接使用 expanded，需要额外判断是否可以展开
// 如果只使用 expanded，会漏掉不可以展开的情况，即在不可以展开的情况下，会触发展开
if (this.expandable && !this._expanded) {
this.setExpanded(true);
}
if (tryExpandParents) {
this.expandParents();
}
}
expandParents() {
let p = this.node.parent;
while (p) {
this.tree.getTreeNode(p).setExpanded(true);
p = p.parent;
}
}
readonly designer: Designer;
readonly document: DocumentModel;
@obx.ref private _node: Node;
get node() {
return this._node;
}
readonly tree: Tree;
constructor(tree: Tree, node: Node) {
makeObservable(this);
this.tree = tree;
this.document = node.document;
this.designer = this.document.designer;
this._node = node;
}
@action
setNode(node: Node) {
if (this._node !== node) {
this._node = node;
}
}
@obx.ref private _filterResult: FilterResult = {
filterWorking: false,
matchChild: false,
matchSelf: false,
keywords: '',
};
get filterReult(): FilterResult {
return this._filterResult;
}
@action
setFilterReult(val: FilterResult) {
this._filterResult = val;
}
}