사용자:Hsl0/연구소/3.js

var TASKS = Symbol('tasks_queue');
var WAITING = Symbol('waiting_queue');

function Tasker() {
    this[TASKS] = new Set();
    this[WAITING] = new Set();
}
Tasker.prototype.push = function push() {
    var tasker = this;
    var items = arguments;
    if(Array.isArray(items[0])) items = items[0];
    else items = Array.from(items);
    items.forEach(function(item) {
        if(typeof item === 'function') this[TASKS].add(item);
        else this[WAITING].add(item);
    });
    return this;
};
Tasker.prototype.wait = function wait() {
    var tasker = this;
    return new Promise(function(resolve) {
        function capture(queue) {
            var arr = Array.from(queue);
            queue.clear();
            return arr;
        }

        Promise.all(capture(tasker[WAITING])).then(function handle() {
            var captured = capture(tasker[WAITING]);
            if(captured.length) return Promise.all(captured).then(handle);
            else resolve();
        });
    });
};
Tasker.prototype.run = function run() {
    var tasker = this;
    this[TASKS].forEach(function(task) {
        tasker[WAITING].add(task());
    });
    return this;
};
window.Tasker = Tasker;

var taskers = {
    renderer: new Tasker(),
    handler: new Tasker(),
    trigger: new Tasker()
};
function runTask() {
    var tasker = this;
    this[TASKS].forEach(function(task) {
        if(typeof task === 'string') tasker[TASKS].add(mw.loader.using(task));
        else tasker[TASKS].add(task());
    });
    return this;
}
taskers.renderer.push = function() {
    Tasker.prototype.apply(this, arguments);
    if(documentReady) this.run();
    return this;
};
taskers.handler.push = function() {
    Tasker.prototype.apply(this, arguments);
    if(rendererDone) this.run();
    return this;
};
taskers.trigger.push = function() {
    Tasker.prototype.apply(this, arguments);
    if(hendlerDone) this.run();
    return this;
};
taskers.renderer.run = runTask;
taskers.handler.run = runTask;
taskers.trigger.run = runTask;

var documentReady = false;
var rendererDone = false;
var handlerDone = false;

window.registerRenderer = function registerRenderer() {
    var renderers = arguments;
    if(Array.isArray(renderers[0])) renderers = renderers[0];
    taskers.renderer.push(arguments);
};
window.registerHandler = function registerHandler() {
    var handlers = arguments;
    if(Array.isArray(handlers[0])) handlers = handlers[0];
    taskers.handler.push(arguments);
};
window.registerTrigger = function registerTrigger() {
    var triggers = arguments;
    if(Array.isArray(triggers[0])) triggers = triggers[0];
    taskers.trigger.push(arguments);
};

$(function() {
    documentReady = true;
    taskers.renderer.run().wait().then(function() {
        rendererDone = true;
        return taskers.handler.run().wait();
    }).then(function() {
        handlerDone = true;
        taskers.trigger.run();
    });
});