ionic-angular
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A powerful framework for building mobile and progressive web apps with JavaScript and Angular
142 lines • 3.71 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
*/
var DomDebouncer = (function () {
function DomDebouncer(dom) {
this.dom = dom;
this.writeTask = null;
this.readTask = null;
}
DomDebouncer.prototype.read = function (fn) {
var _this = this;
if (this.readTask) {
return;
}
return this.readTask = this.dom.read(function (t) {
_this.readTask = null;
fn(t);
});
};
DomDebouncer.prototype.write = function (fn) {
var _this = this;
if (this.writeTask) {
return;
}
return this.writeTask = this.dom.write(function (t) {
_this.writeTask = null;
fn(t);
});
};
DomDebouncer.prototype.cancel = function () {
var writeTask = this.writeTask;
writeTask && this.dom.cancel(writeTask);
var readTask = this.readTask;
readTask && this.dom.cancel(readTask);
this.readTask = this.writeTask = null;
};
return DomDebouncer;
}());
export { DomDebouncer };
/**
* @hidden
*/
var DomController = (function () {
function DomController(plt) {
this.plt = plt;
this.r = [];
this.w = [];
}
DomController.prototype.debouncer = function () {
return new DomDebouncer(this);
};
DomController.prototype.read = function (fn, timeout) {
var _this = this;
if (timeout) {
fn.timeoutId = this.plt.timeout(function () {
_this.r.push(fn);
_this._queue();
}, timeout);
}
else {
this.r.push(fn);
this._queue();
}
return fn;
};
DomController.prototype.write = function (fn, timeout) {
var _this = this;
if (timeout) {
fn.timeoutId = this.plt.timeout(function () {
_this.w.push(fn);
_this._queue();
}, timeout);
}
else {
this.w.push(fn);
this._queue();
}
return fn;
};
DomController.prototype.cancel = function (fn) {
if (fn) {
if (fn.timeoutId) {
this.plt.cancelTimeout(fn.timeoutId);
}
removeArrayItem(this.r, fn) || removeArrayItem(this.w, fn);
}
};
DomController.prototype._queue = function () {
var self = this;
if (!self.q) {
self.q = true;
self.plt.raf(function rafCallback(timeStamp) {
self._flush(timeStamp);
});
}
};
DomController.prototype._flush = function (timeStamp) {
var 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 = function () { return [
{ type: Platform, },
]; };
return DomController;
}());
export { DomController };
function dispatch(timeStamp, r, w) {
var fn;
// ******** DOM READS ****************
while (fn = r.shift()) {
fn(timeStamp);
}
// ******** DOM WRITES ****************
while (fn = w.shift()) {
fn(timeStamp);
}
}
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