jquery/src/fx.js

416 lines
10 KiB
JavaScript

jQuery.fn.extend({
show: function(speed,callback){
return speed ?
this.animate({
height: "show", width: "show", opacity: "show"
}, speed, callback) :
this.filter(":hidden").each(function(){
this.style.display = this.oldblock || "";
if ( jQuery.css(this,"display") == "none" ) {
var elem = jQuery("<" + this.tagName + " />").appendTo("body");
this.style.display = elem.css("display");
// handle an edge condition where css is - div { display:none; } or similar
if (this.style.display == "none")
this.style.display = "block";
elem.remove();
}
}).end();
},
hide: function(speed,callback){
return speed ?
this.animate({
height: "hide", width: "hide", opacity: "hide"
}, speed, callback) :
this.filter(":visible").each(function(){
this.oldblock = this.oldblock || jQuery.css(this,"display");
this.style.display = "none";
}).end();
},
// Save the old toggle function
_toggle: jQuery.fn.toggle,
toggle: function( fn, fn2 ){
return jQuery.isFunction(fn) && jQuery.isFunction(fn2) ?
this._toggle.apply( this, arguments ) :
fn ?
this.animate({
height: "toggle", width: "toggle", opacity: "toggle"
}, fn, fn2) :
this.each(function(){
jQuery(this)[ jQuery(this).is(":hidden") ? "show" : "hide" ]();
});
},
fadeTo: function(speed,to,callback){
return this.animate({opacity: to}, speed, callback);
},
animate: function( prop, speed, easing, callback ) {
var optall = jQuery.speed(speed, easing, callback);
return this[ optall.queue === false ? "each" : "queue" ](function(){
var opt = jQuery.extend({}, optall), p,
hidden = this.nodeType == 1 && jQuery(this).is(":hidden"),
self = this;
for ( p in prop ) {
if ( prop[p] == "hide" && hidden || prop[p] == "show" && !hidden )
return opt.complete.call(this);
if ( ( p == "height" || p == "width" ) && this.style ) {
// Store display property
opt.display = jQuery.css(this, "display");
// Make sure that nothing sneaks out
opt.overflow = this.style.overflow;
}
}
if ( opt.overflow != null )
this.style.overflow = "hidden";
opt.curAnim = jQuery.extend({}, prop);
jQuery.each( prop, function(name, val){
var e = new jQuery.fx( self, opt, name );
if ( /toggle|show|hide/.test(val) )
e[ val == "toggle" ? hidden ? "show" : "hide" : val ]( prop );
else {
var parts = val.toString().match(/^([+-]=)?([\d+-.]+)(.*)$/),
start = e.cur(true) || 0;
if ( parts ) {
var end = parseFloat(parts[2]),
unit = parts[3] || "px";
// We need to compute starting value
if ( unit != "px" ) {
self.style[ name ] = (end || 1) + unit;
start = ((end || 1) / e.cur(true)) * start;
self.style[ name ] = start + unit;
}
// If a +=/-= token was provided, we're doing a relative animation
if ( parts[1] )
end = ((parts[1] == "-=" ? -1 : 1) * end) + start;
e.custom( start, end, unit );
} else
e.custom( start, val, "" );
}
});
// For JS strict compliance
return true;
});
},
queue: function(type, fn){
if ( jQuery.isFunction(type) || ( type && type.constructor == Array )) {
fn = type;
type = "fx";
}
if ( !type || (typeof type == "string" && !fn) )
return queue( this[0], type );
return this.each(function(){
if ( fn.constructor == Array )
queue(this, type, fn);
else {
queue(this, type).push( fn );
if ( queue(this, type).length == 1 )
fn.call(this);
}
});
},
stop: function(clearQueue, gotoEnd){
var timers = jQuery.timers;
if (clearQueue)
this.queue([]);
this.each(function(){
// go in reverse order so anything added to the queue during the loop is ignored
for ( var i = timers.length - 1; i >= 0; i-- )
if ( timers[i].elem == this ) {
if (gotoEnd)
// force the next step to be the last
timers[i](true);
timers.splice(i, 1);
}
});
// start the next in the queue if the last step wasn't forced
if (!gotoEnd)
this.dequeue();
return this;
}
});
// Generate shortcuts for custom animations
jQuery.each({
slideDown: { height:"show" },
slideUp: { height: "hide" },
slideToggle: { height: "toggle" },
fadeIn: { opacity: "show" },
fadeOut: { opacity: "hide" }
}, function( name, props ){
jQuery.fn[ name ] = function( speed, callback ){
return this.animate( props, speed, callback );
};
});
var queue = function( elem, type, array ) {
if ( elem ){
type = type || "fx";
var q = jQuery.data( elem, type + "queue" );
if ( !q || array )
q = jQuery.data( elem, type + "queue", jQuery.makeArray(array) );
}
return q;
};
jQuery.fn.dequeue = function(type){
type = type || "fx";
return this.each(function(){
var q = queue(this, type);
q.shift();
if ( q.length )
q[0].call( this );
});
};
jQuery.extend({
speed: function(speed, easing, fn) {
var opt = speed && speed.constructor == Object ? speed : {
complete: fn || !fn && easing ||
jQuery.isFunction( speed ) && speed,
duration: speed,
easing: fn && easing || easing && easing.constructor != Function && easing
};
opt.duration = (opt.duration && opt.duration.constructor == Number ?
opt.duration :
jQuery.fx.speeds[opt.duration]) || jQuery.fx.speeds._default;
// Queueing
opt.old = opt.complete;
opt.complete = function(){
if ( opt.queue !== false )
jQuery(this).dequeue();
if ( jQuery.isFunction( opt.old ) )
opt.old.call( this );
};
return opt;
},
easing: {
linear: function( p, n, firstNum, diff ) {
return firstNum + diff * p;
},
swing: function( p, n, firstNum, diff ) {
return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
}
},
timers: [],
timerId: null,
fx: function( elem, options, prop ){
this.options = options;
this.elem = elem;
this.prop = prop;
if ( !options.orig )
options.orig = {};
}
});
jQuery.fx.prototype = {
// Simple function for setting a style value
update: function(){
if ( this.options.step )
this.options.step.call( this.elem, this.now, this );
(jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
// Set display property to block for height/width animations
if ( ( this.prop == "height" || this.prop == "width" ) && this.elem.style )
this.elem.style.display = "block";
},
// Get the current size
cur: function(force){
if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) )
return this.elem[ this.prop ];
var r = parseFloat(jQuery.css(this.elem, this.prop, force));
return r && r > -10000 ? r : parseFloat(jQuery.curCSS(this.elem, this.prop)) || 0;
},
// Start an animation from one number to another
custom: function(from, to, unit){
this.startTime = now();
this.start = from;
this.end = to;
this.unit = unit || this.unit || "px";
this.now = this.start;
this.pos = this.state = 0;
this.update();
var self = this;
function t(gotoEnd){
return self.step(gotoEnd);
}
t.elem = this.elem;
jQuery.timers.push(t);
if ( jQuery.timerId == null ) {
jQuery.timerId = setInterval(function(){
var timers = jQuery.timers;
for ( var i = 0; i < timers.length; i++ )
if ( !timers[i]() )
timers.splice(i--, 1);
if ( !timers.length ) {
clearInterval( jQuery.timerId );
jQuery.timerId = null;
}
}, 13);
}
},
// Simple 'show' function
show: function(){
// Remember where we started, so that we can go back to it later
this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
this.options.show = true;
// Begin the animation
this.custom(0, this.cur());
// Make sure that we start at a small width/height to avoid any
// flash of content
if ( this.prop == "width" || this.prop == "height" )
this.elem.style[this.prop] = "1px";
// Start by showing the element
jQuery(this.elem).show();
},
// Simple 'hide' function
hide: function(){
// Remember where we started, so that we can go back to it later
this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
this.options.hide = true;
// Begin the animation
this.custom(this.cur(), 0);
},
// Each step of an animation
step: function(gotoEnd){
var t = now();
if ( gotoEnd || t > this.options.duration + this.startTime ) {
this.now = this.end;
this.pos = this.state = 1;
this.update();
this.options.curAnim[ this.prop ] = true;
var done = true;
for ( var i in this.options.curAnim )
if ( this.options.curAnim[i] !== true )
done = false;
if ( done ) {
if ( this.options.display != null ) {
// Reset the overflow
this.elem.style.overflow = this.options.overflow;
// Reset the display
this.elem.style.display = this.options.display;
if ( jQuery.css(this.elem, "display") == "none" )
this.elem.style.display = "block";
}
// Hide the element if the "hide" operation was done
if ( this.options.hide )
this.elem.style.display = "none";
// Reset the properties, if the item has been hidden or shown
if ( this.options.hide || this.options.show )
for ( var p in this.options.curAnim )
jQuery.attr(this.elem.style, p, this.options.orig[p]);
}
if ( done )
// Execute the complete function
this.options.complete.call( this.elem );
return false;
} else {
var n = t - this.startTime;
this.state = n / this.options.duration;
// Perform the easing function, defaults to swing
this.pos = jQuery.easing[this.options.easing || (jQuery.easing.swing ? "swing" : "linear")](this.state, n, 0, 1, this.options.duration);
this.now = this.start + ((this.end - this.start) * this.pos);
// Perform the next step of the animation
this.update();
}
return true;
}
};
jQuery.extend( jQuery.fx, {
speeds:{
slow: 600,
fast: 200,
// Default speed
_default: 400
},
step: {
opacity: function(fx){
jQuery.attr(fx.elem.style, "opacity", fx.now);
},
_default: function(fx){
if( fx.prop in fx.elem )
fx.elem[ fx.prop ] = fx.now;
else if( fx.elem.style )
fx.elem.style[ fx.prop ] = fx.now + fx.unit;
}
}
});