angular-docs-cn/packages/platform-browser/animations/src/animation_builder.ts

101 lines
3.2 KiB
TypeScript

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {AnimationBuilder, AnimationFactory, AnimationMetadata, AnimationOptions, AnimationPlayer, sequence} from '@angular/animations';
import {DOCUMENT} from '@angular/common';
import {Inject, Injectable, RendererFactory2, RendererType2, ViewEncapsulation} from '@angular/core';
import {AnimationRenderer} from './animation_renderer';
@Injectable()
export class BrowserAnimationBuilder extends AnimationBuilder {
private _nextAnimationId = 0;
private _renderer: AnimationRenderer;
constructor(rootRenderer: RendererFactory2, @Inject(DOCUMENT) doc: any) {
super();
const typeData = {
id: '0',
encapsulation: ViewEncapsulation.None,
styles: [],
data: {animation: []}
} as RendererType2;
this._renderer = rootRenderer.createRenderer(doc.body, typeData) as AnimationRenderer;
}
build(animation: AnimationMetadata|AnimationMetadata[]): AnimationFactory {
const id = this._nextAnimationId.toString();
this._nextAnimationId++;
const entry = Array.isArray(animation) ? sequence(animation) : animation;
issueAnimationCommand(this._renderer, null, id, 'register', [entry]);
return new BrowserAnimationFactory(id, this._renderer);
}
}
export class BrowserAnimationFactory extends AnimationFactory {
constructor(private _id: string, private _renderer: AnimationRenderer) { super(); }
create(element: any, options?: AnimationOptions): AnimationPlayer {
return new RendererAnimationPlayer(this._id, element, options || {}, this._renderer);
}
}
export class RendererAnimationPlayer implements AnimationPlayer {
public parentPlayer: AnimationPlayer|null = null;
private _started = false;
constructor(
public id: string, public element: any, options: AnimationOptions,
private _renderer: AnimationRenderer) {
this._command('create', options);
}
private _listen(eventName: string, callback: (event: any) => any): () => void {
return this._renderer.listen(this.element, `@@${this.id}:${eventName}`, callback);
}
private _command(command: string, ...args: any[]) {
return issueAnimationCommand(this._renderer, this.element, this.id, command, args);
}
onDone(fn: () => void): void { this._listen('done', fn); }
onStart(fn: () => void): void { this._listen('start', fn); }
onDestroy(fn: () => void): void { this._listen('destroy', fn); }
init(): void { this._command('init'); }
hasStarted(): boolean { return this._started; }
play(): void {
this._command('play');
this._started = true;
}
pause(): void { this._command('pause'); }
restart(): void { this._command('restart'); }
finish(): void { this._command('finish'); }
destroy(): void { this._command('destroy'); }
reset(): void { this._command('reset'); }
setPosition(p: number): void { this._command('setPosition', p); }
getPosition(): number { return 0; }
public totalTime = 0;
}
function issueAnimationCommand(
renderer: AnimationRenderer, element: any, id: string, command: string, args: any[]): any {
return renderer.setProperty(element, `@@${id}:${command}`, args);
}