ng-zorro-antd
Version:
An enterprise-class UI components based on Ant Design and Angular
129 lines • 15.7 kB
JavaScript
/**
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
*/
import { CdkVirtualScrollViewport } from '@angular/cdk/scrolling';
import { CdkTree, CdkTreeNodeOutletContext } from '@angular/cdk/tree';
import { ChangeDetectionStrategy, Component, Input, ViewChild, ViewEncapsulation } from '@angular/core';
import { NzTreeNodeOutletDirective } from './outlet';
import { NzTreeView } from './tree';
import * as i0 from "@angular/core";
import * as i1 from "@angular/cdk/scrolling";
import * as i2 from "./outlet";
import * as i3 from "./node";
const DEFAULT_SIZE = 28;
export class NzTreeVirtualScrollViewComponent extends NzTreeView {
constructor() {
super(...arguments);
this.nzItemSize = DEFAULT_SIZE;
this.nzMinBufferPx = DEFAULT_SIZE * 5;
this.nzMaxBufferPx = DEFAULT_SIZE * 10;
this.nodes = [];
this.innerTrackBy = i => i;
}
ngOnChanges(changes) {
if (changes.trackBy) {
if (typeof changes.trackBy.currentValue === 'function') {
this.innerTrackBy = (index, n) => this.trackBy(index, n.data);
}
else {
this.innerTrackBy = i => i;
}
}
}
get compareBy() {
const baseTreeControl = this.treeControl;
if (baseTreeControl.trackBy) {
return baseTreeControl.trackBy;
}
return null;
}
renderNodeChanges(data) {
this.nodes = new Array(...data).map((n, i) => this.createNode(n, i));
this._dataSourceChanged.next();
this.changeDetectorRef.markForCheck();
}
createNode(nodeData, index) {
const node = this._getNodeDef(nodeData, index);
const context = new CdkTreeNodeOutletContext(nodeData);
if (this.treeControl.getLevel) {
context.level = this.treeControl.getLevel(nodeData);
}
else {
context.level = 0;
}
return {
data: nodeData,
context,
nodeDef: node
};
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.0.3", ngImport: i0, type: NzTreeVirtualScrollViewComponent, deps: null, target: i0.ɵɵFactoryTarget.Component }); }
static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "17.0.3", type: NzTreeVirtualScrollViewComponent, selector: "nz-tree-virtual-scroll-view", inputs: { nzItemSize: "nzItemSize", nzMinBufferPx: "nzMinBufferPx", nzMaxBufferPx: "nzMaxBufferPx", trackBy: "trackBy" }, host: { properties: { "class.ant-tree-block-node": "nzDirectoryTree || nzBlockNode", "class.ant-tree-directory": "nzDirectoryTree", "class.ant-tree-rtl": "dir === 'rtl'" }, classAttribute: "ant-tree" }, providers: [
{ provide: NzTreeView, useExisting: NzTreeVirtualScrollViewComponent },
{ provide: CdkTree, useExisting: NzTreeVirtualScrollViewComponent }
], viewQueries: [{ propertyName: "nodeOutlet", first: true, predicate: NzTreeNodeOutletDirective, descendants: true, static: true }, { propertyName: "virtualScrollViewport", first: true, predicate: CdkVirtualScrollViewport, descendants: true, static: true }], exportAs: ["nzTreeVirtualScrollView"], usesInheritance: true, usesOnChanges: true, ngImport: i0, template: `
<div class="ant-tree-list">
<cdk-virtual-scroll-viewport
class="ant-tree-list-holder"
[itemSize]="nzItemSize"
[minBufferPx]="nzMinBufferPx"
[maxBufferPx]="nzMaxBufferPx"
>
<ng-container *cdkVirtualFor="let item of nodes; let i = index; trackBy: innerTrackBy">
<ng-template nzTreeVirtualScrollNodeOutlet [data]="item" [compareBy]="compareBy"></ng-template>
</ng-container>
</cdk-virtual-scroll-viewport>
</div>
<ng-container nzTreeNodeOutlet></ng-container>
`, isInline: true, dependencies: [{ kind: "directive", type: i1.CdkFixedSizeVirtualScroll, selector: "cdk-virtual-scroll-viewport[itemSize]", inputs: ["itemSize", "minBufferPx", "maxBufferPx"] }, { kind: "directive", type: i1.CdkVirtualForOf, selector: "[cdkVirtualFor][cdkVirtualForOf]", inputs: ["cdkVirtualForOf", "cdkVirtualForTrackBy", "cdkVirtualForTemplate", "cdkVirtualForTemplateCacheSize"] }, { kind: "component", type: i1.CdkVirtualScrollViewport, selector: "cdk-virtual-scroll-viewport", inputs: ["orientation", "appendOnly"], outputs: ["scrolledIndexChange"] }, { kind: "directive", type: i2.NzTreeNodeOutletDirective, selector: "[nzTreeNodeOutlet]" }, { kind: "directive", type: i3.NzTreeVirtualScrollNodeOutletDirective, selector: "[nzTreeVirtualScrollNodeOutlet]", inputs: ["data", "compareBy"] }], changeDetection: i0.ChangeDetectionStrategy.OnPush, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.0.3", ngImport: i0, type: NzTreeVirtualScrollViewComponent, decorators: [{
type: Component,
args: [{
selector: 'nz-tree-virtual-scroll-view',
exportAs: 'nzTreeVirtualScrollView',
template: `
<div class="ant-tree-list">
<cdk-virtual-scroll-viewport
class="ant-tree-list-holder"
[itemSize]="nzItemSize"
[minBufferPx]="nzMinBufferPx"
[maxBufferPx]="nzMaxBufferPx"
>
<ng-container *cdkVirtualFor="let item of nodes; let i = index; trackBy: innerTrackBy">
<ng-template nzTreeVirtualScrollNodeOutlet [data]="item" [compareBy]="compareBy"></ng-template>
</ng-container>
</cdk-virtual-scroll-viewport>
</div>
<ng-container nzTreeNodeOutlet></ng-container>
`,
encapsulation: ViewEncapsulation.None,
changeDetection: ChangeDetectionStrategy.OnPush,
providers: [
{ provide: NzTreeView, useExisting: NzTreeVirtualScrollViewComponent },
{ provide: CdkTree, useExisting: NzTreeVirtualScrollViewComponent }
],
host: {
class: 'ant-tree',
'[class.ant-tree-block-node]': 'nzDirectoryTree || nzBlockNode',
'[class.ant-tree-directory]': 'nzDirectoryTree',
'[class.ant-tree-rtl]': `dir === 'rtl'`
}
}]
}], propDecorators: { nodeOutlet: [{
type: ViewChild,
args: [NzTreeNodeOutletDirective, { static: true }]
}], virtualScrollViewport: [{
type: ViewChild,
args: [CdkVirtualScrollViewport, { static: true }]
}], nzItemSize: [{
type: Input
}], nzMinBufferPx: [{
type: Input
}], nzMaxBufferPx: [{
type: Input
}], trackBy: [{
type: Input
}] } });
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let i = index; trackBy: innerTrackBy\">\n          <ng-template nzTreeVirtualScrollNodeOutlet [data]=\"item\" [compareBy]=\"compareBy\"></ng-template>\n        </ng-container>\n      </cdk-virtual-scroll-viewport>\n    </div>\n    <ng-container nzTreeNodeOutlet></ng-container>\n  `,\n  encapsulation: ViewEncapsulation.None,\n  changeDetection: ChangeDetectionStrategy.OnPush,\n  providers: [\n    { provide: NzTreeView, useExisting: NzTreeVirtualScrollViewComponent },\n    { provide: CdkTree, useExisting: NzTreeVirtualScrollViewComponent }\n  ],\n  host: {\n    class: 'ant-tree',\n    '[class.ant-tree-block-node]': 'nzDirectoryTree || nzBlockNode',\n    '[class.ant-tree-directory]': 'nzDirectoryTree',\n    '[class.ant-tree-rtl]': `dir === 'rtl'`\n  }\n})\nexport class NzTreeVirtualScrollViewComponent<T> extends NzTreeView<T> implements OnChanges {\n  @ViewChild(NzTreeNodeOutletDirective, { static: true }) readonly nodeOutlet!: NzTreeNodeOutletDirective;\n  @ViewChild(CdkVirtualScrollViewport, { static: true }) readonly virtualScrollViewport!: CdkVirtualScrollViewport;\n\n  @Input() nzItemSize = DEFAULT_SIZE;\n  @Input() nzMinBufferPx = DEFAULT_SIZE * 5;\n  @Input() nzMaxBufferPx = DEFAULT_SIZE * 10;\n  @Input() override trackBy!: TrackByFunction<T>;\n  nodes: Array<NzTreeVirtualNodeData<T>> = [];\n  innerTrackBy: TrackByFunction<NzTreeVirtualNodeData<T>> = i => i;\n\n  ngOnChanges(changes: SimpleChanges): void {\n    if (changes.trackBy) {\n      if (typeof changes.trackBy.currentValue === 'function') {\n        this.innerTrackBy = (index: number, n) => this.trackBy(index, n.data);\n      } else {\n        this.innerTrackBy = i => i;\n      }\n    }\n  }\n\n  get compareBy(): ((value: T) => NzSafeAny) | null {\n    const baseTreeControl = this.treeControl as BaseTreeControl<T, NzSafeAny>;\n    if (baseTreeControl.trackBy) {\n      return baseTreeControl.trackBy;\n    }\n\n    return null;\n  }\n\n  override renderNodeChanges(data: T[] | readonly T[]): void {\n    this.nodes = new Array(...data).map((n, i) => this.createNode(n, i));\n    this._dataSourceChanged.next();\n    this.changeDetectorRef.markForCheck();\n  }\n\n  private createNode(nodeData: T, index: number): NzTreeVirtualNodeData<T> {\n    const node = this._getNodeDef(nodeData, index);\n    const context = new CdkTreeNodeOutletContext<T>(nodeData);\n    if (this.treeControl.getLevel) {\n      context.level = this.treeControl.getLevel(nodeData);\n    } else {\n      context.level = 0;\n    }\n    return {\n      data: nodeData,\n      context,\n      nodeDef: node\n    };\n  }\n}\n"]}