carbon-components-angular
Version:
Next generation components
359 lines • 30.1 kB
JavaScript
import { Component, Input, Output, EventEmitter, TemplateRef } from "@angular/core";
import * as i0 from "@angular/core";
import * as i1 from "./treeview.service";
import * as i2 from "@angular/common";
import * as i3 from "carbon-components-angular/icon";
export class TreeNodeComponent {
constructor(treeViewService) {
this.treeViewService = treeViewService;
this.id = `tree-node-${TreeNodeComponent.treeNodeCount++}`;
this.active = false;
this.disabled = false;
this.expanded = false;
this.selected = false;
this.children = [];
/**
* Determines the depth of the node
* Calculated by default when passing `Node` array to `TreeViewComponent`, manual entry required otherwise
*/
this.depth = 0;
this.nodeFocus = new EventEmitter();
this.nodeBlur = new EventEmitter();
this.nodeSelect = new EventEmitter();
this.nodetoggle = new EventEmitter();
}
/**
* Simple way to set all attributes of Node component via node object
* Would simplify setting component attributes when dynamically rendering node.
*/
set node(node) {
this._node = node;
this.id = node.id ?? this.id;
this.active = node.active ?? this.active;
this.disabled = node.disabled ?? this.disabled;
this.expanded = node.expanded ?? this.expanded;
this.label = node.label ?? this.label;
this.value = node.value ?? this.value;
this.icon = node.icon ?? this.icon;
this.selected = node.selected ?? this.selected;
this.depth = node.depth ?? this.depth;
this.children = node.children ?? this.children;
}
get node() {
return this._node;
}
/**
* Caclulate offset for margin/padding
*/
ngAfterContentChecked() {
this.offset = this.calculateOffset();
}
/**
* Highlight the node
*/
ngOnInit() {
// Highlight the node
this.subscription = this.treeViewService.selectionObservable.subscribe((value) => {
this.selected = value.has(this.id);
this.active = this.selected;
});
}
/**
* Unsubscribe from subscriptions
*/
ngOnDestroy() {
this.subscription?.unsubscribe();
}
/**
* Selects the node and emits the event from the tree view component
* @param event
*/
nodeClick(event) {
if (!this.disabled) {
this.selected = true;
this.active = true;
event.target.parentElement.focus();
// Passes event to all nodes to update highlighting & parent to emit
this.treeViewService.selectNode({ id: this.id, label: this.label, value: this.value });
}
}
/**
* Calculate the node offset
* @returns Number
*/
calculateOffset() {
// Parent node with icon
if (this.children.length && this.icon) {
return this.depth + 1 + this.depth * 0.5;
}
// parent node without icon
if (this.children.length) {
return this.depth + 1;
}
// leaf node with icon
if (this.icon) {
return this.depth + 2 + this.depth * 0.5;
}
return this.depth + 2.5;
}
emitFocusEvent(event) {
this.nodeFocus.emit({ node: { id: this.id, label: this.label, value: this.value }, event });
}
emitBlurEvent(event) {
this.nodeBlur.emit({ node: { id: this.id, label: this.label, value: this.value }, event });
}
/**
* Expand children if not disabled
* @param event: Event
*/
toggleExpanded(event) {
if (!this.disabled) {
this.nodetoggle.emit({ node: { id: this.id, label: this.label, value: this.value }, event });
this.expanded = !this.expanded;
// Prevent selection of the node
event.stopPropagation();
}
}
/**
* Manages the keyboard accessibility for children expansion & selection
*/
navigateTree(event) {
if (event.key === "ArrowLeft" || event.key === "ArrowRight" || event.key === "Enter") {
event.stopPropagation();
}
// Unexpand
if (event.key === "ArrowLeft") {
if (this.expanded && this.children) {
this.toggleExpanded(event);
}
}
if (event.key === "ArrowRight") {
if (!this.expanded && this.children) {
this.toggleExpanded(event);
}
}
if (event.key === "Enter") {
event.preventDefault();
this.nodeClick(event);
}
}
isTemplate(value) {
return value instanceof TemplateRef;
}
isProjected() {
return this.treeViewService.contentProjected;
}
}
TreeNodeComponent.treeNodeCount = 0;
TreeNodeComponent.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: TreeNodeComponent, deps: [{ token: i1.TreeViewService }], target: i0.ɵɵFactoryTarget.Component });
TreeNodeComponent.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "14.3.0", type: TreeNodeComponent, selector: "cds-tree-node", inputs: { id: "id", active: "active", disabled: "disabled", expanded: "expanded", label: "label", selected: "selected", value: "value", icon: "icon", children: "children", depth: "depth", node: "node" }, outputs: { nodeFocus: "nodeFocus", nodeBlur: "nodeBlur", nodeSelect: "nodeSelect", nodetoggle: "nodetoggle" }, ngImport: i0, template: `
<div
[id]="id"
class="cds--tree-node"
[ngClass]="{
'cds--tree-node--active': active,
'cds--tree-node--disabled': disabled,
'cds--tree-node--selected': selected,
'cds--tree-leaf-node': !children.length,
'cds--tree-parent-node': children.length,
'cds--tree-node--with-icon': icon
}"
[attr.aria-expanded]="expanded || null"
[attr.aria-current]="active || null"
[attr.aria-selected]="disabled ? null : selected"
[attr.aria-disabled]="disabled"
role="treeitem"
[attr.tabindex]="selected ? 0 : -1"
(focus)="emitFocusEvent($event)"
(blur)="emitBlurEvent($event)"
(keydown)="navigateTree($event)">
<div
*ngIf="!children.length"
class="cds--tree-node__label"
[style.padding-inline-start.rem]="offset"
[style.margin-inline-start.rem]="-offset"
(click)="nodeClick($event)">
<!-- Icon -->
<ng-container *ngIf="icon && !isTemplate(icon)">
<svg
class="cds--tree-node__icon"
[cdsIcon]="icon"
size="16">
</svg>
</ng-container>
<ng-template *ngIf="isTemplate(icon)" [ngTemplateOutlet]="icon"></ng-template>
{{label}}
</div>
<div
*ngIf="children.length"
class="cds--tree-node__label"
[style.padding-inline-start.rem]="offset"
[style.margin-inline-start.rem]="-offset"
role="group"
(click)="nodeClick($event)">
<span
class="cds--tree-parent-node__toggle"
[attr.disabled]="disabled || null"
(click)="toggleExpanded($event)">
<svg
class="cds--tree-parent-node__toggle-icon"
[ngClass]="{'cds--tree-parent-node__toggle-icon--expanded' : expanded}"
ibmIcon="caret--down"
size="16">
</svg>
</span>
<span class="cds--tree-node__label__details">
<!-- Icon -->
<ng-container *ngIf="icon && !isTemplate(icon)">
<svg
class="cds--tree-node__icon"
[cdsIcon]="icon"
size="16">
</svg>
</ng-container>
<ng-template *ngIf="isTemplate(icon)" [ngTemplateOutlet]="icon"></ng-template>
{{label}}
</span>
</div>
<div
*ngIf="expanded"
role="group"
class="cds--tree-node__children">
<ng-container *ngIf="isProjected(); else notProjected">
<ng-content></ng-content>
</ng-container>
<ng-template #notProjected>
<cds-tree-node
*ngFor="let childNode of children"
[node]="childNode"
[depth]="depth + 1"
[disabled]="disabled">
</cds-tree-node>
</ng-template>
</div>
</div>
`, isInline: true, dependencies: [{ kind: "directive", type: i2.NgClass, selector: "[ngClass]", inputs: ["class", "ngClass"] }, { kind: "directive", type: i2.NgForOf, selector: "[ngFor][ngForOf]", inputs: ["ngForOf", "ngForTrackBy", "ngForTemplate"] }, { kind: "directive", type: i2.NgIf, selector: "[ngIf]", inputs: ["ngIf", "ngIfThen", "ngIfElse"] }, { kind: "directive", type: i2.NgTemplateOutlet, selector: "[ngTemplateOutlet]", inputs: ["ngTemplateOutletContext", "ngTemplateOutlet", "ngTemplateOutletInjector"] }, { kind: "directive", type: i3.IconDirective, selector: "[cdsIcon], [ibmIcon]", inputs: ["ibmIcon", "cdsIcon", "size", "title", "ariaLabel", "ariaLabelledBy", "ariaHidden", "isFocusable"] }, { kind: "component", type: TreeNodeComponent, selector: "cds-tree-node", inputs: ["id", "active", "disabled", "expanded", "label", "selected", "value", "icon", "children", "depth", "node"], outputs: ["nodeFocus", "nodeBlur", "nodeSelect", "nodetoggle"] }] });
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "14.3.0", ngImport: i0, type: TreeNodeComponent, decorators: [{
type: Component,
args: [{
selector: "cds-tree-node",
template: `
<div
[id]="id"
class="cds--tree-node"
[ngClass]="{
'cds--tree-node--active': active,
'cds--tree-node--disabled': disabled,
'cds--tree-node--selected': selected,
'cds--tree-leaf-node': !children.length,
'cds--tree-parent-node': children.length,
'cds--tree-node--with-icon': icon
}"
[attr.aria-expanded]="expanded || null"
[attr.aria-current]="active || null"
[attr.aria-selected]="disabled ? null : selected"
[attr.aria-disabled]="disabled"
role="treeitem"
[attr.tabindex]="selected ? 0 : -1"
(focus)="emitFocusEvent($event)"
(blur)="emitBlurEvent($event)"
(keydown)="navigateTree($event)">
<div
*ngIf="!children.length"
class="cds--tree-node__label"
[style.padding-inline-start.rem]="offset"
[style.margin-inline-start.rem]="-offset"
(click)="nodeClick($event)">
<!-- Icon -->
<ng-container *ngIf="icon && !isTemplate(icon)">
<svg
class="cds--tree-node__icon"
[cdsIcon]="icon"
size="16">
</svg>
</ng-container>
<ng-template *ngIf="isTemplate(icon)" [ngTemplateOutlet]="icon"></ng-template>
{{label}}
</div>
<div
*ngIf="children.length"
class="cds--tree-node__label"
[style.padding-inline-start.rem]="offset"
[style.margin-inline-start.rem]="-offset"
role="group"
(click)="nodeClick($event)">
<span
class="cds--tree-parent-node__toggle"
[attr.disabled]="disabled || null"
(click)="toggleExpanded($event)">
<svg
class="cds--tree-parent-node__toggle-icon"
[ngClass]="{'cds--tree-parent-node__toggle-icon--expanded' : expanded}"
ibmIcon="caret--down"
size="16">
</svg>
</span>
<span class="cds--tree-node__label__details">
<!-- Icon -->
<ng-container *ngIf="icon && !isTemplate(icon)">
<svg
class="cds--tree-node__icon"
[cdsIcon]="icon"
size="16">
</svg>
</ng-container>
<ng-template *ngIf="isTemplate(icon)" [ngTemplateOutlet]="icon"></ng-template>
{{label}}
</span>
</div>
<div
*ngIf="expanded"
role="group"
class="cds--tree-node__children">
<ng-container *ngIf="isProjected(); else notProjected">
<ng-content></ng-content>
</ng-container>
<ng-template #notProjected>
<cds-tree-node
*ngFor="let childNode of children"
[node]="childNode"
[depth]="depth + 1"
[disabled]="disabled">
</cds-tree-node>
</ng-template>
</div>
</div>
`
}]
}], ctorParameters: function () { return [{ type: i1.TreeViewService }]; }, propDecorators: { id: [{
type: Input
}], active: [{
type: Input
}], disabled: [{
type: Input
}], expanded: [{
type: Input
}], label: [{
type: Input
}], selected: [{
type: Input
}], value: [{
type: Input
}], icon: [{
type: Input
}], children: [{
type: Input
}], depth: [{
type: Input
}], node: [{
type: Input
}], nodeFocus: [{
type: Output
}], nodeBlur: [{
type: Output
}], nodeSelect: [{
type: Output
}], nodetoggle: [{
type: Output
}] } });
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{\n\tComponent,\n\tInput,\n\tOutput,\n\tEventEmitter,\n\tOnInit,\n\tOnDestroy,\n\tAfterContentInit,\n\tTemplateRef,\n\tAfterContentChecked\n} from \"@angular/core\";\nimport { Subscription } from \"rxjs\";\nimport { TreeViewService } from \"./treeview.service\";\nimport { Node } from \"./tree-node.types\";\n\n@Component({\n\tselector: \"cds-tree-node\",\n\ttemplate: `\n\t\t<div\n\t\t\t[id]=\"id\"\n\t\t\tclass=\"cds--tree-node\"\n\t\t\t[ngClass]=\"{\n\t\t\t\t'cds--tree-node--active': active,\n\t\t\t\t'cds--tree-node--disabled': disabled,\n\t\t\t\t'cds--tree-node--selected': selected,\n\t\t\t\t'cds--tree-leaf-node': !children.length,\n\t\t\t\t'cds--tree-parent-node': children.length,\n\t\t\t\t'cds--tree-node--with-icon': icon\n\t\t\t}\"\n\t\t\t[attr.aria-expanded]=\"expanded || null\"\n\t\t\t[attr.aria-current]=\"active || null\"\n\t\t\t[attr.aria-selected]=\"disabled ? null : selected\"\n\t\t\t[attr.aria-disabled]=\"disabled\"\n\t\t\trole=\"treeitem\"\n\t\t\t[attr.tabindex]=\"selected ? 0 : -1\"\n\t\t\t(focus)=\"emitFocusEvent($event)\"\n\t\t\t(blur)=\"emitBlurEvent($event)\"\n\t\t\t(keydown)=\"navigateTree($event)\">\n\t\t\t<div\n\t\t\t\t*ngIf=\"!children.length\"\n\t\t\t\tclass=\"cds--tree-node__label\"\n\t\t\t\t[style.padding-inline-start.rem]=\"offset\"\n\t\t\t\t[style.margin-inline-start.rem]=\"-offset\"\n\t\t\t\t(click)=\"nodeClick($event)\">\n\t\t\t\t<!-- Icon -->\n\t\t\t\t<ng-container *ngIf=\"icon && !isTemplate(icon)\">\n\t\t\t\t\t<svg\n\t\t\t\t\t\tclass=\"cds--tree-node__icon\"\n\t\t\t\t\t\t[cdsIcon]=\"icon\"\n\t\t\t\t\t\tsize=\"16\">\n\t\t\t\t\t</svg>\n\t\t\t\t</ng-container>\n\t\t\t\t<ng-template *ngIf=\"isTemplate(icon)\" [ngTemplateOutlet]=\"icon\"></ng-template>\n\t\t\t\t{{label}}\n\t\t\t</div>\n\t\t\t<div\n\t\t\t\t*ngIf=\"children.length\"\n\t\t\t\tclass=\"cds--tree-node__label\"\n\t\t\t\t[style.padding-inline-start.rem]=\"offset\"\n\t\t\t\t[style.margin-inline-start.rem]=\"-offset\"\n\t\t\t\trole=\"group\"\n\t\t\t\t(click)=\"nodeClick($event)\">\n\t\t\t\t<span\n\t\t\t\t\tclass=\"cds--tree-parent-node__toggle\"\n\t\t\t\t\t[attr.disabled]=\"disabled || null\"\n\t\t\t\t\t(click)=\"toggleExpanded($event)\">\n\t\t\t\t\t<svg\n\t\t\t\t\t\tclass=\"cds--tree-parent-node__toggle-icon\"\n\t\t\t\t\t\t[ngClass]=\"{'cds--tree-parent-node__toggle-icon--expanded' : expanded}\"\n\t\t\t\t\t\tibmIcon=\"caret--down\"\n\t\t\t\t\t\tsize=\"16\">\n\t\t\t\t\t</svg>\n\t\t\t\t</span>\n\t\t\t\t<span class=\"cds--tree-node__label__details\">\n\t\t\t\t\t<!-- Icon -->\n\t\t\t\t\t<ng-container *ngIf=\"icon && !isTemplate(icon)\">\n\t\t\t\t\t\t<svg\n\t\t\t\t\t\t\tclass=\"cds--tree-node__icon\"\n\t\t\t\t\t\t\t[cdsIcon]=\"icon\"\n\t\t\t\t\t\t\tsize=\"16\">\n\t\t\t\t\t\t</svg>\n\t\t\t\t\t</ng-container>\n\t\t\t\t\t<ng-template *ngIf=\"isTemplate(icon)\" [ngTemplateOutlet]=\"icon\"></ng-template>\n\t\t\t\t\t{{label}}\n\t\t\t\t</span>\n\t\t\t</div>\n\t\t\t<div\n\t\t\t\t*ngIf=\"expanded\"\n\t\t\t\trole=\"group\"\n\t\t\t\tclass=\"cds--tree-node__children\">\n\t\t\t\t<ng-container *ngIf=\"isProjected(); else notProjected\">\n\t\t\t\t\t<ng-content></ng-content>\n\t\t\t\t</ng-container>\n\t\t\t\t<ng-template #notProjected>\n\t\t\t\t\t<cds-tree-node\n\t\t\t\t\t\t*ngFor=\"let childNode of children\"\n\t\t\t\t\t\t[node]=\"childNode\"\n\t\t\t\t\t\t[depth]=\"depth + 1\"\n\t\t\t\t\t\t[disabled]=\"disabled\">\n\t\t\t\t\t</cds-tree-node>\n\t\t\t\t</ng-template>\n\t\t\t</div>\n\t\t</div>\n\t`\n})\nexport class TreeNodeComponent implements AfterContentChecked, OnInit, OnDestroy {\n\tstatic treeNodeCount = 0;\n\t@Input() id = `tree-node-${TreeNodeComponent.treeNodeCount++}`;\n\t@Input() active = false;\n\t@Input() disabled = false;\n\t@Input() expanded = false;\n\t@Input() label: string | TemplateRef<any>;\n\t@Input() selected = false;\n\t@Input() value;\n\t@Input() icon: string | TemplateRef<any>;\n\t@Input() children: Node[] = [];\n\n\t/**\n\t * Determines the depth of the node\n\t * Calculated by default when passing `Node` array to `TreeViewComponent`, manual entry required otherwise\n\t */\n\t@Input() depth = 0;\n\n\t/**\n\t * Simple way to set all attributes of Node component via node object\n\t * Would simplify setting component attributes when dynamically rendering node.\n\t */\n\t@Input() set node(node: Node) {\n\t\tthis._node = node;\n\n\t\tthis.id = node.id ?? this.id;\n\t\tthis.active = node.active ?? this.active;\n\t\tthis.disabled = node.disabled ?? this.disabled;\n\t\tthis.expanded = node.expanded ?? this.expanded;\n\t\tthis.label = node.label ?? this.label;\n\t\tthis.value = node.value ?? this.value;\n\t\tthis.icon = node.icon ?? this.icon;\n\t\tthis.selected = node.selected ?? this.selected;\n\t\tthis.depth = node.depth ?? this.depth;\n\t\tthis.children = node.children ?? this.children;\n\t}\n\n\tget node() {\n\t\treturn this._node;\n\t}\n\n\t@Output() nodeFocus = new EventEmitter();\n\t@Output() nodeBlur = new EventEmitter();\n\t@Output() nodeSelect = new EventEmitter();\n\t@Output() nodetoggle = new EventEmitter();\n\n\toffset;\n\tprivate _node;\n\tprivate subscription: Subscription;\n\n\tconstructor(private treeViewService: TreeViewService) {}\n\n\t/**\n\t * Caclulate offset for margin/padding\n\t */\n\tngAfterContentChecked(): void {\n\t\tthis.offset = this.calculateOffset();\n\t}\n\n\t/**\n\t * Highlight the node\n\t */\n\tngOnInit(): void {\n\t\t// Highlight the node\n\t\tthis.subscription = this.treeViewService.selectionObservable.subscribe((value: Map<string, Node>) => {\n\t\t\tthis.selected = value.has(this.id);\n\t\t\tthis.active = this.selected;\n\t\t});\n\t}\n\n\t/**\n\t * Unsubscribe from subscriptions\n\t */\n\tngOnDestroy(): void {\n\t\tthis.subscription?.unsubscribe();\n\t}\n\n\t/**\n\t * Selects the node and emits the event from the tree view component\n\t * @param event\n\t */\n\tnodeClick(event) {\n\t\tif (!this.disabled) {\n\t\t\tthis.selected = true;\n\t\t\tthis.active = true;\n\t\t\tevent.target.parentElement.focus();\n\t\t\t// Passes event to all nodes to update highlighting & parent to emit\n\t\t\tthis.treeViewService.selectNode({ id: this.id, label: this.label, value: this.value });\n\t\t}\n\t}\n\n\t/**\n\t * Calculate the node offset\n\t * @returns Number\n\t */\n\tcalculateOffset() {\n\t\t// Parent node with icon\n\t\tif (this.children.length && this.icon) {\n\t\t\treturn this.depth + 1 + this.depth * 0.5;\n\t\t}\n\n\t\t// parent node without icon\n\t\tif (this.children.length) {\n\t\t\treturn this.depth + 1;\n\t\t}\n\n\t\t// leaf node with icon\n\t\tif (this.icon) {\n\t\t\treturn this.depth + 2 + this.depth * 0.5;\n\t\t}\n\n\t\treturn this.depth + 2.5;\n\t}\n\n\temitFocusEvent(event) {\n\t\tthis.nodeFocus.emit({ node: { id: this.id, label: this.label, value: this.value }, event });\n\t}\n\n\temitBlurEvent(event) {\n\t\tthis.nodeBlur.emit({ node: { id: this.id, label: this.label, value: this.value }, event });\n\t}\n\n\t/**\n\t * Expand children if not disabled\n\t * @param event: Event\n\t */\n\ttoggleExpanded(event) {\n\t\tif (!this.disabled) {\n\t\t\tthis.nodetoggle.emit({ node: { id: this.id, label: this.label, value: this.value }, event });\n\t\t\tthis.expanded = !this.expanded;\n\t\t\t// Prevent selection of the node\n\t\t\tevent.stopPropagation();\n\t\t}\n\t}\n\n\t/**\n\t * Manages the keyboard accessibility for children expansion & selection\n\t */\n\tnavigateTree(event: KeyboardEvent) {\n\t\tif (event.key === \"ArrowLeft\" || event.key === \"ArrowRight\" || event.key === \"Enter\") {\n\t\t\tevent.stopPropagation();\n\t\t}\n\t\t// Unexpand\n\t\tif (event.key === \"ArrowLeft\") {\n\t\t\tif (this.expanded && this.children) {\n\t\t\t\tthis.toggleExpanded(event);\n\t\t\t}\n\t\t}\n\n\t\tif (event.key === \"ArrowRight\") {\n\t\t\tif (!this.expanded && this.children) {\n\t\t\t\tthis.toggleExpanded(event);\n\t\t\t}\n\t\t}\n\n\t\tif (event.key === \"Enter\") {\n\t\t\tevent.preventDefault();\n\t\t\tthis.nodeClick(event);\n\t\t}\n\t}\n\n\tpublic isTemplate(value) {\n\t\treturn value instanceof TemplateRef;\n\t}\n\n\tpublic isProjected() {\n\t\treturn this.treeViewService.contentProjected;\n\t}\n}\n"]}