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// **********************************************************************
//
// Copyright (c) 2003-2018 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
//
// jshint browser: true
//
/* global WorkerGlobalScope */
const Ice = require("../Ice/ModuleRegistry").Ice;
function isIE()
{
return (navigator.userAgent.indexOf("MSIE") !== -1 || navigator.userAgent.match(/Trident.*rv:11\./));
}
function isEdge()
{
return (/Edge/).test(navigator.userAgent);
}
function isWorker()
{
return typeof WorkerGlobalScope !== 'undefined' && self instanceof WorkerGlobalScope;
}
const MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
let _nextId = 0;
const nextId = function()
{
if(_nextId == MAX_SAFE_INTEGER)
{
_nextId = 0;
}
return _nextId++;
};
const _timers = new Map();
//
// Create a timer object that uses the default browser methods.
//
function createTimerObject()
{
const Timer = class
{
static setTimeout(cb, ms)
{
return setTimeout(cb, ms);
}
static clearTimeout(id)
{
return clearTimeout(id);
}
static setInterval(cb, ms)
{
return setInterval(cb, ms);
}
static clearInterval(id)
{
return clearInterval(id);
}
};
//
// For Browsers that support setImmediate prefer that,
// otherwise implement it using MessageChannel
//
if(isEdge() || isIE())
{
Timer.setImmediate = function(cb)
{
setImmediate(cb);
};
}
else
{
//
// Should be only call for workers
//
const channel = new MessageChannel();
channel.port1.onmessage = event =>
{
const id = event.data;
const cb = _timers.get(id);
if(cb !== undefined)
{
cb.call();
_timers.delete(id);
}
};
Timer.setImmediate = function(cb)
{
const id = nextId();
_timers.set(id, cb);
channel.port2.postMessage(id);
};
}
return Timer;
}
const _SetTimeoutType = 0;
const _SetIntervalType = 1;
const _SetImmediateType = 2;
const _ClearTimeoutType = 3;
const _ClearIntervalType = 4;
let worker;
class Timer
{
static setTimeout(cb, ms)
{
const id = nextId();
_timers.set(id, cb);
worker.postMessage({type: _SetTimeoutType, id: id, ms: ms});
return id;
}
static clearTimeout(id)
{
_timers.delete(id);
worker.postMessage({type: _ClearTimeoutType, id: id});
}
static setInterval(cb, ms)
{
const id = nextId();
_timers.set(id, cb);
worker.postMessage({type: _SetIntervalType, id: id, ms: ms});
return id;
}
static clearInterval(id)
{
_timers.delete(id);
worker.postMessage({type: _ClearIntervalType, id: id});
}
static setImmediate(cb)
{
const id = nextId();
_timers.set(id, cb);
worker.postMessage({type: _SetImmediateType, id: id});
return id;
}
static onmessage(e)
{
const cb = _timers.get(e.data.id);
if(cb !== undefined)
{
cb.call();
if(e.data.type !== _SetIntervalType)
{
_timers.delete(e.data.id);
}
}
}
}
const workerCode = function()
{
return "(" +
function()
{
//
// jshint worker: true
//
const _wSetTimeoutType = 0;
const _wSetIntervalType = 1;
const _wSetImmediateType = 2;
const _wClearTimeoutType = 3;
const _wClearIntervalType = 4;
const timers = {};
self.onmessage = e =>
{
if(e.data.type == _wSetTimeoutType)
{
timers[e.data.id] = setTimeout(() => self.postMessage(e.data), e.data.ms);
}
else if(e.data.type == _wSetIntervalType)
{
timers[e.data.id] = setInterval(() => self.postMessage(e.data), e.data.ms);
}
else if(e.data.type == _wSetImmediateType)
{
self.postMessage(e.data);
}
else if(e.data.type == _wClearTimeoutType)
{
clearTimeout(timers[e.data.id]);
delete timers[e.data.id];
}
else if(e.data.type == _wClearIntervalType)
{
clearInterval(timers[e.data.id]);
delete timers[e.data.id];
}
};
//
// jshint worker: false
//
}.toString() + "());";
};
if(isIE())
{
//
// With IE always use the setInterval/setTimeout browser functions directly
//
Ice.Timer = createTimerObject();
}
else if(isWorker())
{
//
// If we are running in a worker don't spawn a separate worker for the timer
//
Ice.Timer = createTimerObject();
}
else if(worker === undefined)
{
const url = URL.createObjectURL(new Blob([workerCode()], {type: 'text/javascript'}));
worker = new Worker(url);
worker.onmessage = Timer.onmessage;
Ice.Timer = Timer;
}
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