File size: 2,650 Bytes
bc20498 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 |
import { AsyncAction } from './AsyncAction';
import { Subscription } from '../Subscription';
import { AsyncScheduler } from './AsyncScheduler';
export class VirtualTimeScheduler extends AsyncScheduler {
constructor(schedulerActionCtor = VirtualAction, maxFrames = Infinity) {
super(schedulerActionCtor, () => this.frame);
this.maxFrames = maxFrames;
this.frame = 0;
this.index = -1;
}
flush() {
const { actions, maxFrames } = this;
let error;
let action;
while ((action = actions[0]) && action.delay <= maxFrames) {
actions.shift();
this.frame = action.delay;
if ((error = action.execute(action.state, action.delay))) {
break;
}
}
if (error) {
while ((action = actions.shift())) {
action.unsubscribe();
}
throw error;
}
}
}
VirtualTimeScheduler.frameTimeFactor = 10;
export class VirtualAction extends AsyncAction {
constructor(scheduler, work, index = (scheduler.index += 1)) {
super(scheduler, work);
this.scheduler = scheduler;
this.work = work;
this.index = index;
this.active = true;
this.index = scheduler.index = index;
}
schedule(state, delay = 0) {
if (Number.isFinite(delay)) {
if (!this.id) {
return super.schedule(state, delay);
}
this.active = false;
const action = new VirtualAction(this.scheduler, this.work);
this.add(action);
return action.schedule(state, delay);
}
else {
return Subscription.EMPTY;
}
}
requestAsyncId(scheduler, id, delay = 0) {
this.delay = scheduler.frame + delay;
const { actions } = scheduler;
actions.push(this);
actions.sort(VirtualAction.sortActions);
return 1;
}
recycleAsyncId(scheduler, id, delay = 0) {
return undefined;
}
_execute(state, delay) {
if (this.active === true) {
return super._execute(state, delay);
}
}
static sortActions(a, b) {
if (a.delay === b.delay) {
if (a.index === b.index) {
return 0;
}
else if (a.index > b.index) {
return 1;
}
else {
return -1;
}
}
else if (a.delay > b.delay) {
return 1;
}
else {
return -1;
}
}
}
//# sourceMappingURL=VirtualTimeScheduler.js.map |