// Functions used in conjunction with YUI animation and their davGlass extensions

ILR.namespace("animation");

// Define default fade/appear options for ILR animation
// Defined outside of ILR.animation.fadeIn so it can be used independently
ILR.animation.defaultFadeOpts = {
	ease: YAHOO.util.Easing.easeOut,
	seconds: 0.5,
	delay: false,
	append: false
};

// Fade out old contents and fade in new contents text of container containerId
// For example, fade out the activity indicator and fade in the response text of an xhr request.
ILR.animation.fadeOutIn = function(text, containerId, opts){

	var eff1, eff2, opts = {
		ease: opts && opts.ease ? opts.ease : ILR.animation.defaultFadeOpts.ease,
		seconds: opts && opts.seconds ? opts.seconds : ILR.animation.defaultFadeOpts.seconds,
		delay: opts && opts.delay != undefined ? opts.delay : ILR.animation.defaultFadeOpts.delay
	};
	
	eff1 = new YAHOO.widget.Effects.Fade(containerId, opts);
	eff1.onEffectComplete.subscribe(function(){
		document.getElementById(containerId).innerHTML = text;
		eff2 = new YAHOO.widget.Effects.Appear(containerId, opts);
		eff2.animate();
	});
	eff1.animate();
	
};


// Fade in xhr-generated content appended to original page content in containerId
ILR.animation.fadeIn = function(text, containerId, opts){

	var eff, opts = {
		ease: opts && opts.ease ? opts.ease : ILR.animation.defaultFadeOpts.ease,
		seconds: opts && opts.seconds ? opts.seconds : ILR.animation.defaultFadeOpts.seconds,
		delay: opts && opts.delay != undefined ? opts.delay : ILR.animation.defaultFadeOpts.delay,
		append: opts && opts.append != undefined ? opts.append : ILR.animation.defaultFadeOpts.append
	};
	
	if (!opts.append) {
		document.getElementById(containerId).innerHTML = text;
	}
	else {
		document.getElementById(containerId).innerHTML += text;
	}
	eff = new YAHOO.widget.Effects.Appear(containerId, opts);
	eff.animate();
};