work.suroh.tk/node_modules/rxjs/_esm5/scheduler/AnimationFrameAction.js

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2019-12-02 12:22:45 +00:00
/** PURE_IMPORTS_START ._AsyncAction,.._util_AnimationFrame PURE_IMPORTS_END */
var __extends = (this && this.__extends) || function (d, b) {
for (var p in b)
if (b.hasOwnProperty(p))
d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
import { AsyncAction } from './AsyncAction';
import { AnimationFrame } from '../util/AnimationFrame';
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
export var AnimationFrameAction = /*@__PURE__*/ (/*@__PURE__*/ function (_super) {
__extends(AnimationFrameAction, _super);
function AnimationFrameAction(scheduler, work) {
_super.call(this, scheduler, work);
this.scheduler = scheduler;
this.work = work;
}
AnimationFrameAction.prototype.requestAsyncId = function (scheduler, id, delay) {
if (delay === void 0) {
delay = 0;
}
// If delay is greater than 0, request as an async action.
if (delay !== null && delay > 0) {
return _super.prototype.requestAsyncId.call(this, scheduler, id, delay);
}
// Push the action to the end of the scheduler queue.
scheduler.actions.push(this);
// If an animation frame has already been requested, don't request another
// one. If an animation frame hasn't been requested yet, request one. Return
// the current animation frame request id.
return scheduler.scheduled || (scheduler.scheduled = AnimationFrame.requestAnimationFrame(scheduler.flush.bind(scheduler, null)));
};
AnimationFrameAction.prototype.recycleAsyncId = function (scheduler, id, delay) {
if (delay === void 0) {
delay = 0;
}
// If delay exists and is greater than 0, or if the delay is null (the
// action wasn't rescheduled) but was originally scheduled as an async
// action, then recycle as an async action.
if ((delay !== null && delay > 0) || (delay === null && this.delay > 0)) {
return _super.prototype.recycleAsyncId.call(this, scheduler, id, delay);
}
// If the scheduler queue is empty, cancel the requested animation frame and
// set the scheduled flag to undefined so the next AnimationFrameAction will
// request its own.
if (scheduler.actions.length === 0) {
AnimationFrame.cancelAnimationFrame(id);
scheduler.scheduled = undefined;
}
// Return undefined so the action knows to request a new async id if it's rescheduled.
return undefined;
};
return AnimationFrameAction;
}(AsyncAction));
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