ionic-angular
Version:
A powerful framework for building mobile and progressive web apps with JavaScript and Angular
209 lines • 4.48 kB
JavaScript
/**
* Adopted from FastDom
* https://github.com/wilsonpage/fastdom
* MIT License
*/
import { Injectable } from '@angular/core';
import { Platform } from './platform';
import { removeArrayItem } from '../util/util';
/**
* @hidden
*/
export class DomDebouncer {
/**
* @param {?} dom
*/
constructor(dom) {
this.dom = dom;
this.writeTask = null;
this.readTask = null;
}
/**
* @param {?} fn
* @return {?}
*/
read(fn) {
if (this.readTask) {
return;
}
return this.readTask = this.dom.read((t) => {
this.readTask = null;
fn(t);
});
}
/**
* @param {?} fn
* @param {?=} ctx
* @return {?}
*/
write(fn, ctx) {
if (this.writeTask) {
return;
}
return this.writeTask = this.dom.write((t) => {
this.writeTask = null;
fn(t);
});
}
/**
* @return {?}
*/
cancel() {
const /** @type {?} */ writeTask = this.writeTask;
writeTask && this.dom.cancel(writeTask);
const /** @type {?} */ readTask = this.readTask;
readTask && this.dom.cancel(readTask);
this.readTask = this.writeTask = null;
}
}
function DomDebouncer_tsickle_Closure_declarations() {
/** @type {?} */
DomDebouncer.prototype.writeTask;
/** @type {?} */
DomDebouncer.prototype.readTask;
/** @type {?} */
DomDebouncer.prototype.dom;
}
/**
* @hidden
*/
export class DomController {
/**
* @param {?} plt
*/
constructor(plt) {
this.plt = plt;
this.r = [];
this.w = [];
}
/**
* @return {?}
*/
debouncer() {
return new DomDebouncer(this);
}
/**
* @param {?} fn
* @param {?=} timeout
* @return {?}
*/
read(fn, timeout) {
if (timeout) {
((fn)).timeoutId = this.plt.timeout(() => {
this.r.push(fn);
this._queue();
}, timeout);
}
else {
this.r.push(fn);
this._queue();
}
return fn;
}
/**
* @param {?} fn
* @param {?=} timeout
* @return {?}
*/
write(fn, timeout) {
if (timeout) {
((fn)).timeoutId = this.plt.timeout(() => {
this.w.push(fn);
this._queue();
}, timeout);
}
else {
this.w.push(fn);
this._queue();
}
return fn;
}
/**
* @param {?} fn
* @return {?}
*/
cancel(fn) {
if (fn) {
if (fn.timeoutId) {
this.plt.cancelTimeout(fn.timeoutId);
}
removeArrayItem(this.r, fn) || removeArrayItem(this.w, fn);
}
}
/**
* @return {?}
*/
_queue() {
const /** @type {?} */ self = this;
if (!self.q) {
self.q = true;
self.plt.raf(function rafCallback(timeStamp) {
self._flush(timeStamp);
});
}
}
/**
* @param {?} timeStamp
* @return {?}
*/
_flush(timeStamp) {
let /** @type {?} */ err;
try {
dispatch(timeStamp, this.r, this.w);
}
catch (e) {
err = e;
}
this.q = false;
if (this.r.length || this.w.length) {
this._queue();
}
if (err) {
throw err;
}
}
}
DomController.decorators = [
{ type: Injectable },
];
/**
* @nocollapse
*/
DomController.ctorParameters = () => [
{ type: Platform, },
];
function DomController_tsickle_Closure_declarations() {
/** @type {?} */
DomController.decorators;
/**
* @nocollapse
* @type {?}
*/
DomController.ctorParameters;
/** @type {?} */
DomController.prototype.r;
/** @type {?} */
DomController.prototype.w;
/** @type {?} */
DomController.prototype.q;
/** @type {?} */
DomController.prototype.plt;
}
/**
* @param {?} timeStamp
* @param {?} r
* @param {?} w
* @return {?}
*/
function dispatch(timeStamp, r, w) {
let /** @type {?} */ fn;
// ******** DOM READS ****************
while (fn = r.shift()) {
fn(timeStamp);
}
// ******** DOM WRITES ****************
while (fn = w.shift()) {
fn(timeStamp);
}
}
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