@blackbaud/angular-tree-component
Version:
A simple yet powerful tree component for Angular 14+
390 lines • 43 kB
JavaScript
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
return c > 3 && r && Object.defineProperty(target, key, r), r;
};
import { observable, computed, reaction, action } from 'mobx';
import { TREE_EVENTS } from '../constants/events';
export class TreeNode {
constructor(data, parent, treeModel, index) {
this.data = data;
this.parent = parent;
this.treeModel = treeModel;
this.position = 0;
this.allowDrop = (element, $event) => {
return this.options.allowDrop(element, { parent: this, index: 0 }, $event);
};
this.allowDragoverStyling = () => {
return this.options.allowDragoverStyling;
};
if (this.id === undefined || this.id === null) {
this.id = uuid();
} // Make sure there's a unique id without overriding existing ids to work with immutable data structures
this.index = index;
if (this.getField('children')) {
this._initChildren();
}
this.autoLoadChildren();
}
get isHidden() { return this.treeModel.isHidden(this); }
;
get isExpanded() { return this.treeModel.isExpanded(this); }
;
get isActive() { return this.treeModel.isActive(this); }
;
get isFocused() { return this.treeModel.isNodeFocused(this); }
;
get isSelected() {
if (this.isSelectable()) {
return this.treeModel.isSelected(this);
}
else {
return this.children.some((node) => node.isSelected);
}
}
;
get isAllSelected() {
if (this.isSelectable()) {
return this.treeModel.isSelected(this);
}
else {
return this.children.every((node) => node.isAllSelected);
}
}
;
get isPartiallySelected() {
return this.isSelected && !this.isAllSelected;
}
get level() {
return this.parent ? this.parent.level + 1 : 0;
}
get path() {
return this.parent ? [...this.parent.path, this.id] : [];
}
get elementRef() {
throw `Element Ref is no longer supported since introducing virtual scroll\n
You may use a template to obtain a reference to the element`;
}
get originalNode() { return this._originalNode; }
;
// helper get functions:
get hasChildren() {
return !!(this.getField('hasChildren') || (this.children && this.children.length > 0));
}
get isCollapsed() { return !this.isExpanded; }
get isLeaf() { return !this.hasChildren; }
get isRoot() { return this.parent.data.virtual; }
get realParent() { return this.isRoot ? null : this.parent; }
// proxy functions:
get options() { return this.treeModel.options; }
fireEvent(event) { this.treeModel.fireEvent(event); }
// field accessors:
get displayField() {
return this.getField('display');
}
get id() {
return this.getField('id');
}
set id(value) {
this.setField('id', value);
}
getField(key) {
return this.data[this.options[`${key}Field`]];
}
setField(key, value) {
this.data[this.options[`${key}Field`]] = value;
}
// traversing:
_findAdjacentSibling(steps, skipHidden = false) {
const siblings = this._getParentsChildren(skipHidden);
const index = siblings.indexOf(this);
return siblings.length > index + steps ? siblings[index + steps] : null;
}
findNextSibling(skipHidden = false) {
return this._findAdjacentSibling(+1, skipHidden);
}
findPreviousSibling(skipHidden = false) {
return this._findAdjacentSibling(-1, skipHidden);
}
getVisibleChildren() {
return this.visibleChildren;
}
get visibleChildren() {
return (this.children || []).filter((node) => !node.isHidden);
}
getFirstChild(skipHidden = false) {
let children = skipHidden ? this.visibleChildren : this.children;
return children != null && children.length ? children[0] : null;
}
getLastChild(skipHidden = false) {
let children = skipHidden ? this.visibleChildren : this.children;
return children != null && children.length ? children[children.length - 1] : null;
}
findNextNode(goInside = true, skipHidden = false) {
return goInside && this.isExpanded && this.getFirstChild(skipHidden) ||
this.findNextSibling(skipHidden) ||
this.parent && this.parent.findNextNode(false, skipHidden);
}
findPreviousNode(skipHidden = false) {
let previousSibling = this.findPreviousSibling(skipHidden);
if (!previousSibling) {
return this.realParent;
}
return previousSibling._getLastOpenDescendant(skipHidden);
}
_getLastOpenDescendant(skipHidden = false) {
const lastChild = this.getLastChild(skipHidden);
return (this.isCollapsed || !lastChild)
? this
: lastChild._getLastOpenDescendant(skipHidden);
}
_getParentsChildren(skipHidden = false) {
const children = this.parent &&
(skipHidden ? this.parent.getVisibleChildren() : this.parent.children);
return children || [];
}
getIndexInParent(skipHidden = false) {
return this._getParentsChildren(skipHidden).indexOf(this);
}
isDescendantOf(node) {
if (this === node)
return true;
else
return this.parent && this.parent.isDescendantOf(node);
}
getNodePadding() {
return this.options.levelPadding * (this.level - 1) + 'px';
}
getClass() {
return [this.options.nodeClass(this), `tree-node-level-${this.level}`].join(' ');
}
onDrop($event) {
this.mouseAction('drop', $event.event, {
from: $event.element,
to: { parent: this, index: 0, dropOnNode: true }
});
}
allowDrag() {
return this.options.allowDrag(this);
}
// helper methods:
loadNodeChildren() {
if (!this.options.getChildren) {
return Promise.resolve(); // Not getChildren method - for using redux
}
return Promise.resolve(this.options.getChildren(this))
.then((children) => {
if (children) {
this.setField('children', children);
this._initChildren();
if (this.options.useTriState && this.treeModel.isSelected(this)) {
this.setIsSelected(true);
}
this.children.forEach((child) => {
if (child.getField('isExpanded') && child.hasChildren) {
child.expand();
}
});
}
}).then(() => {
this.fireEvent({
eventName: TREE_EVENTS.loadNodeChildren,
node: this
});
});
}
expand() {
if (!this.isExpanded) {
this.toggleExpanded();
}
return this;
}
collapse() {
if (this.isExpanded) {
this.toggleExpanded();
}
return this;
}
doForAll(fn) {
Promise.resolve(fn(this)).then(() => {
if (this.children) {
this.children.forEach((child) => child.doForAll(fn));
}
});
}
expandAll() {
this.doForAll((node) => node.expand());
}
collapseAll() {
this.doForAll((node) => node.collapse());
}
ensureVisible() {
if (this.realParent) {
this.realParent.expand();
this.realParent.ensureVisible();
}
return this;
}
toggleExpanded() {
this.setIsExpanded(!this.isExpanded);
return this;
}
setIsExpanded(value) {
if (this.hasChildren) {
this.treeModel.setExpandedNode(this, value);
}
return this;
}
;
autoLoadChildren() {
this.handler =
reaction(() => this.isExpanded, (isExpanded) => {
if (!this.children && this.hasChildren && isExpanded) {
this.loadNodeChildren();
}
}, { fireImmediately: true });
}
dispose() {
if (this.children) {
this.children.forEach((child) => child.dispose());
}
if (this.handler) {
this.handler();
}
this.parent = null;
this.children = null;
}
setIsActive(value, multi = false) {
this.treeModel.setActiveNode(this, value, multi);
if (value) {
this.focus(this.options.scrollOnActivate);
}
return this;
}
isSelectable() {
return this.isLeaf || !this.children || !this.options.useTriState;
}
setIsSelected(value) {
if (this.isSelectable()) {
this.treeModel.setSelectedNode(this, value);
}
else {
this.visibleChildren.forEach((child) => child.setIsSelected(value));
}
return this;
}
toggleSelected() {
this.setIsSelected(!this.isSelected);
return this;
}
toggleActivated(multi = false) {
this.setIsActive(!this.isActive, multi);
return this;
}
setActiveAndVisible(multi = false) {
this.setIsActive(true, multi)
.ensureVisible();
setTimeout(this.scrollIntoView.bind(this));
return this;
}
scrollIntoView(force = false) {
this.treeModel.virtualScroll.scrollIntoView(this, force);
}
focus(scroll = true) {
let previousNode = this.treeModel.getFocusedNode();
this.treeModel.setFocusedNode(this);
if (scroll) {
this.scrollIntoView();
}
if (previousNode) {
this.fireEvent({ eventName: TREE_EVENTS.blur, node: previousNode });
}
this.fireEvent({ eventName: TREE_EVENTS.focus, node: this });
return this;
}
blur() {
let previousNode = this.treeModel.getFocusedNode();
this.treeModel.setFocusedNode(null);
if (previousNode) {
this.fireEvent({ eventName: TREE_EVENTS.blur, node: this });
}
return this;
}
setIsHidden(value) {
this.treeModel.setIsHidden(this, value);
}
hide() {
this.setIsHidden(true);
}
show() {
this.setIsHidden(false);
}
mouseAction(actionName, $event, data = null) {
this.treeModel.setFocus(true);
const actionMapping = this.options.actionMapping.mouse;
const mouseAction = actionMapping[actionName];
if (mouseAction) {
mouseAction(this.treeModel, this, $event, data);
}
}
getSelfHeight() {
return this.options.nodeHeight(this);
}
_initChildren() {
this.children = this.getField('children')
.map((c, index) => new TreeNode(c, this, this.treeModel, index));
}
}
__decorate([
computed
], TreeNode.prototype, "isHidden", null);
__decorate([
computed
], TreeNode.prototype, "isExpanded", null);
__decorate([
computed
], TreeNode.prototype, "isActive", null);
__decorate([
computed
], TreeNode.prototype, "isFocused", null);
__decorate([
computed
], TreeNode.prototype, "isSelected", null);
__decorate([
computed
], TreeNode.prototype, "isAllSelected", null);
__decorate([
computed
], TreeNode.prototype, "isPartiallySelected", null);
__decorate([
observable
], TreeNode.prototype, "children", void 0);
__decorate([
observable
], TreeNode.prototype, "index", void 0);
__decorate([
observable
], TreeNode.prototype, "position", void 0);
__decorate([
observable
], TreeNode.prototype, "height", void 0);
__decorate([
computed
], TreeNode.prototype, "level", null);
__decorate([
computed
], TreeNode.prototype, "path", null);
__decorate([
computed
], TreeNode.prototype, "visibleChildren", null);
__decorate([
action
], TreeNode.prototype, "setIsSelected", null);
__decorate([
action
], TreeNode.prototype, "_initChildren", null);
function uuid() {
return Math.floor(Math.random() * 10000000000000);
}
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{ observable, computed, reaction, autorun, action, IReactionDisposer } from 'mobx';\nimport { TreeModel } from './tree.model';\nimport { TreeOptions } from './tree-options.model';\nimport { ITreeNode } from '../defs/api';\nimport { TREE_EVENTS } from '../constants/events';\n\nexport class TreeNode implements ITreeNode {\n  private handler: IReactionDisposer;\n  @computed get isHidden() { return this.treeModel.isHidden(this); };\n  @computed get isExpanded() { return this.treeModel.isExpanded(this); };\n  @computed get isActive() { return this.treeModel.isActive(this); };\n  @computed get isFocused() { return this.treeModel.isNodeFocused(this); };\n  @computed get isSelected() {\n    if (this.isSelectable()) {\n        return this.treeModel.isSelected(this);\n    } else {\n      return this.children.some((node: TreeNode) => node.isSelected);\n    }\n  };\n  @computed get isAllSelected() {\n    if (this.isSelectable()) {\n      return this.treeModel.isSelected(this);\n    } else {\n      return this.children.every((node: TreeNode) => node.isAllSelected);\n    }\n  };\n  @computed get isPartiallySelected() {\n    return this.isSelected && !this.isAllSelected;\n  }\n\n  @observable children: TreeNode[];\n  @observable index: number;\n  @observable position = 0;\n  @observable height: number;\n  @computed get level(): number {\n    return this.parent ? this.parent.level + 1 : 0;\n  }\n  @computed get path(): string[] {\n    return this.parent ? [...this.parent.path, this.id] : [];\n  }\n\n  get elementRef(): any {\n    throw `Element Ref is no longer supported since introducing virtual scroll\\n\n      You may use a template to obtain a reference to the element`;\n  }\n\n  private _originalNode: any;\n  get originalNode() { return this._originalNode; };\n\n  constructor(public data: any, public parent: TreeNode, public treeModel: TreeModel, index: number) {\n    if (this.id === undefined || this.id === null) {\n      this.id = uuid();\n    } // Make sure there's a unique id without overriding existing ids to work with immutable data structures\n    this.index = index;\n\n    if (this.getField('children')) {\n      this._initChildren();\n    }\n    this.autoLoadChildren();\n  }\n\n  // helper get functions:\n  get hasChildren(): boolean {\n    return !!(this.getField('hasChildren') || (this.children && this.children.length > 0));\n  }\n  get isCollapsed(): boolean { return !this.isExpanded; }\n  get isLeaf(): boolean { return !this.hasChildren; }\n  get isRoot(): boolean { return this.parent.data.virtual; }\n  get realParent(): TreeNode { return this.isRoot ? null : this.parent; }\n\n  // proxy functions:\n  get options(): TreeOptions { return this.treeModel.options; }\n  fireEvent(event) { this.treeModel.fireEvent(event); }\n\n  // field accessors:\n  get displayField() {\n    return this.getField('display');\n  }\n\n  get id() {\n    return this.getField('id');\n  }\n\n  set id(value) {\n    this.setField('id', value);\n  }\n\n  getField(key) {\n    return this.data[this.options[`${key}Field`]];\n  }\n\n  setField(key, value) {\n    this.data[this.options[`${key}Field`]] = value;\n  }\n\n  // traversing:\n  _findAdjacentSibling(steps, skipHidden = false) {\n    const siblings = this._getParentsChildren(skipHidden);\n    const index = siblings.indexOf(this);\n\n    return siblings.length > index + steps ? siblings[index + steps] : null;\n  }\n\n  findNextSibling(skipHidden = false) {\n    return this._findAdjacentSibling(+1, skipHidden);\n  }\n\n  findPreviousSibling(skipHidden = false) {\n    return this._findAdjacentSibling(-1, skipHidden);\n  }\n\n  getVisibleChildren() {\n    return this.visibleChildren;\n  }\n\n  @computed get visibleChildren() {\n    return (this.children || []).filter((node) => !node.isHidden);\n  }\n\n  getFirstChild(skipHidden = false) {\n    let children = skipHidden ? this.visibleChildren : this.children;\n\n    return children != null && children.length ? children[0] : null;\n  }\n\n  getLastChild(skipHidden = false) {\n    let children = skipHidden ? this.visibleChildren : this.children;\n\n    return children != null && children.length ? children[children.length - 1] : null;\n  }\n\n  findNextNode(goInside = true, skipHidden = false) {\n    return goInside && this.isExpanded && this.getFirstChild(skipHidden) ||\n           this.findNextSibling(skipHidden) ||\n           this.parent && this.parent.findNextNode(false, skipHidden);\n  }\n\n  findPreviousNode(skipHidden = false) {\n    let previousSibling = this.findPreviousSibling(skipHidden);\n    if (!previousSibling) {\n      return this.realParent;\n    }\n    return previousSibling._getLastOpenDescendant(skipHidden);\n  }\n\n  _getLastOpenDescendant(skipHidden = false) {\n    const lastChild = this.getLastChild(skipHidden);\n    return (this.isCollapsed || !lastChild)\n      ? this\n      : lastChild._getLastOpenDescendant(skipHidden);\n  }\n\n  private _getParentsChildren(skipHidden = false): any[] {\n    const children = this.parent &&\n      (skipHidden ? this.parent.getVisibleChildren() : this.parent.children);\n\n    return children || [];\n  }\n\n  private getIndexInParent(skipHidden = false) {\n    return this._getParentsChildren(skipHidden).indexOf(this);\n  }\n\n  isDescendantOf(node: TreeNode) {\n    if (this === node) return true;\n    else return this.parent && this.parent.isDescendantOf(node);\n  }\n\n  getNodePadding(): string {\n    return this.options.levelPadding * (this.level - 1) + 'px';\n  }\n\n  getClass(): string {\n    return [this.options.nodeClass(this), `tree-node-level-${ this.level }`].join(' ');\n  }\n\n  onDrop($event) {\n    this.mouseAction('drop', $event.event, {\n      from: $event.element,\n      to: { parent: this, index: 0, dropOnNode: true }\n    });\n  }\n\n  allowDrop = (element, $event?) => {\n    return this.options.allowDrop(element, { parent: this, index: 0 }, $event);\n  }\n\n  allowDragoverStyling = () => {\n    return this.options.allowDragoverStyling;\n  }\n\n  allowDrag() {\n    return this.options.allowDrag(this);\n  }\n\n\n  // helper methods:\n  loadNodeChildren() {\n    if (!this.options.getChildren) {\n      return Promise.resolve(); // Not getChildren method - for using redux\n    }\n    return Promise.resolve(this.options.getChildren(this))\n      .then((children) => {\n        if (children) {\n          this.setField('children', children);\n          this._initChildren();\n          if (this.options.useTriState && this.treeModel.isSelected(this)) {\n            this.setIsSelected(true);\n          }\n          this.children.forEach((child) => {\n            if (child.getField('isExpanded') && child.hasChildren) {\n              child.expand();\n            }\n          });\n      }}).then(() => {\n        this.fireEvent({\n          eventName: TREE_EVENTS.loadNodeChildren,\n          node: this\n        });\n      });\n  }\n\n  expand() {\n    if (!this.isExpanded) {\n      this.toggleExpanded();\n    }\n\n    return this;\n  }\n\n  collapse() {\n    if (this.isExpanded) {\n      this.toggleExpanded();\n    }\n\n    return this;\n  }\n\n  doForAll(fn: (node: ITreeNode) => any) {\n    Promise.resolve(fn(this)).then(() => {\n      if (this.children) {\n        this.children.forEach((child) => child.doForAll(fn));\n      }\n    });\n  }\n\n  expandAll() {\n    this.doForAll((node) => node.expand());\n  }\n\n  collapseAll() {\n    this.doForAll((node) => node.collapse());\n  }\n\n  ensureVisible() {\n    if (this.realParent) {\n      this.realParent.expand();\n      this.realParent.ensureVisible();\n    }\n\n    return this;\n  }\n\n  toggleExpanded() {\n    this.setIsExpanded(!this.isExpanded);\n\n    return this;\n  }\n\n  setIsExpanded(value) {\n    if (this.hasChildren) {\n      this.treeModel.setExpandedNode(this, value);\n    }\n\n    return this;\n  };\n\n  autoLoadChildren() {\n    this.handler =\n      reaction(\n        () => this.isExpanded,\n        (isExpanded) => {\n          if (!this.children && this.hasChildren && isExpanded) {\n            this.loadNodeChildren();\n          }\n        },\n        { fireImmediately: true }\n      );\n  }\n\n  dispose() {\n    if (this.children) {\n      this.children.forEach((child) => child.dispose());\n    }\n    if (this.handler) {\n      this.handler();\n    }\n    this.parent = null;\n    this.children = null;\n  }\n\n  setIsActive(value, multi = false) {\n    this.treeModel.setActiveNode(this, value, multi);\n    if (value) {\n      this.focus(this.options.scrollOnActivate);\n    }\n\n    return this;\n  }\n\n  isSelectable() {\n    return this.isLeaf || !this.children || !this.options.useTriState;\n  }\n\n  @action setIsSelected(value) {\n    if (this.isSelectable()) {\n      this.treeModel.setSelectedNode(this, value);\n    } else {\n      this.visibleChildren.forEach((child) => child.setIsSelected(value));\n    }\n\n    return this;\n  }\n\n  toggleSelected() {\n    this.setIsSelected(!this.isSelected);\n\n    return this;\n  }\n\n  toggleActivated(multi = false) {\n    this.setIsActive(!this.isActive, multi);\n\n    return this;\n  }\n\n  setActiveAndVisible(multi = false) {\n    this.setIsActive(true, multi)\n      .ensureVisible();\n\n    setTimeout(this.scrollIntoView.bind(this));\n\n    return this;\n  }\n\n  scrollIntoView(force = false) {\n    this.treeModel.virtualScroll.scrollIntoView(this, force);\n  }\n\n  focus(scroll = true) {\n    let previousNode = this.treeModel.getFocusedNode();\n    this.treeModel.setFocusedNode(this);\n    if (scroll) {\n      this.scrollIntoView();\n    }\n    if (previousNode) {\n      this.fireEvent({ eventName: TREE_EVENTS.blur, node: previousNode });\n    }\n    this.fireEvent({ eventName: TREE_EVENTS.focus, node: this });\n\n    return this;\n  }\n\n  blur() {\n    let previousNode = this.treeModel.getFocusedNode();\n    this.treeModel.setFocusedNode(null);\n    if (previousNode) {\n      this.fireEvent({ eventName: TREE_EVENTS.blur, node: this });\n    }\n\n    return this;\n  }\n\n  setIsHidden(value) {\n    this.treeModel.setIsHidden(this, value);\n  }\n\n  hide() {\n    this.setIsHidden(true);\n  }\n\n  show() {\n    this.setIsHidden(false);\n  }\n\n  mouseAction(actionName: string, $event, data: any = null) {\n    this.treeModel.setFocus(true);\n\n    const actionMapping = this.options.actionMapping.mouse;\n    const mouseAction = actionMapping[actionName];\n\n    if (mouseAction) {\n      mouseAction(this.treeModel, this, $event, data);\n    }\n  }\n\n  getSelfHeight() {\n    return this.options.nodeHeight(this);\n  }\n\n  @action _initChildren() {\n    this.children = this.getField('children')\n      .map((c, index) => new TreeNode(c, this, this.treeModel, index));\n  }\n}\n\nfunction uuid() {\n  return Math.floor(Math.random() * 10000000000000);\n}\n"]}