terraform/website/source/assets/javascripts/lib/Chainable.js

75 lines
1.3 KiB
JavaScript

(function(){
var Chainable = function(){
this._chain = [];
this._cycle = this._cycle.bind(this);
};
Chainable.prototype._running = false;
Chainable.prototype.start = function(){
if (this._running || !this._chain.length) {
return this;
}
this._running = true;
return this._cycle();
};
Chainable.prototype.reset = function(){
if (!this._running) {
return this;
}
clearTimeout(this._timer);
this._timer = null;
this._chain.length = 0;
this._running = false;
return this;
};
Chainable.prototype._cycle = function(){
var current;
if (!this._chain.length) {
return this.reset();
}
current = this._chain.shift();
if (current.type === 'function') {
current.func.apply(current.scope, current.args);
current = null;
return this._cycle();
}
if (current.type === 'wait') {
clearTimeout(this._timer);
this._timer = setTimeout(this._cycle, current.time || 0);
current = null;
}
return this;
};
Chainable.prototype.then = Chainable.prototype.exec = function(func, scope, args){
this._chain.push({
type : 'function',
func : func,
scope : scope || window,
args : args || []
});
return this.start();
};
Chainable.prototype.wait = function(time){
this._chain.push({
type : 'wait',
time : time
});
return this.start();
};
window.Chainable = Chainable;
})();