src/fx.js

   1 jQuery.fn.extend({
   2         show: function(speed,callback){
   3                 return speed ?
   4                         this.animate({
   5                                 height: "show", width: "show", opacity: "show"
   6                         }, speed, callback) :
   7
   8                         this.filter(":hidden").each(function(){
   9                                 this.style.display = this.oldblock || "";
  10                                 if ( jQuery.css(this,"display") == "none" ) {
  11                                         var elem = jQuery("<" + this.tagName + " />").appendTo("body");
  12                                         this.style.display = elem.css("display");
  13                                         // handle an edge condition where css is - div { display:none; } or similar
  14                                         if (this.style.display == "none")
  15                                                 this.style.display = "block";
  16                                         elem.remove();
  17                                 }
  18                         }).end();
  19         },
  20
  21         hide: function(speed,callback){
  22                 return speed ?
  23                         this.animate({
  24                                 height: "hide", width: "hide", opacity: "hide"
  25                         }, speed, callback) :
  26
  27                         this.filter(":visible").each(function(){
  28                                 this.oldblock = this.oldblock || jQuery.css(this,"display");
  29                                 this.style.display = "none";
  30                         }).end();
  31         },
  32
  33         // Save the old toggle function
  34         _toggle: jQuery.fn.toggle,
  35
  36         toggle: function( fn, fn2 ){
  37                 return jQuery.isFunction(fn) && jQuery.isFunction(fn2) ?
  38                         this._toggle( fn, fn2 ) :
  39                         fn ?
  40                                 this.animate({
  41                                         height: "toggle", width: "toggle", opacity: "toggle"
  42                                 }, fn, fn2) :
  43                                 this.each(function(){
  44                                         jQuery(this)[ jQuery(this).is(":hidden") ? "show" : "hide" ]();
  45                                 });
  46         },
  47
  48         slideDown: function(speed,callback){
  49                 return this.animate({height: "show"}, speed, callback);
  50         },
  51
  52         slideUp: function(speed,callback){
  53                 return this.animate({height: "hide"}, speed, callback);
  54         },
  55
  56         slideToggle: function(speed, callback){
  57                 return this.animate({height: "toggle"}, speed, callback);
  58         },
  59
  60         fadeIn: function(speed, callback){
  61                 return this.animate({opacity: "show"}, speed, callback);
  62         },
  63
  64         fadeOut: function(speed, callback){
  65                 return this.animate({opacity: "hide"}, speed, callback);
  66         },
  67
  68         fadeTo: function(speed,to,callback){
  69                 return this.animate({opacity: to}, speed, callback);
  70         },
  71
  72         animate: function( prop, speed, easing, callback ) {
  73                 var optall = jQuery.speed(speed, easing, callback);
  74
  75                 return this[ optall.queue === false ? "each" : "queue" ](function(){
  76                         if ( this.nodeType != 1)
  77                                 return false;
  78
  79                         var opt = jQuery.extend({}, optall);
  80                         var hidden = jQuery(this).is(":hidden"), self = this;
  81
  82                         for ( var p in prop ) {
  83                                 if ( prop[p] == "hide" && hidden || prop[p] == "show" && !hidden )
  84                                         return jQuery.isFunction(opt.complete) && opt.complete.apply(this);
  85
  86                                 if ( p == "height" || p == "width" ) {
  87                                         // Store display property
  88                                         opt.display = jQuery.css(this, "display");
  89
  90                                         // Make sure that nothing sneaks out
  91                                         opt.overflow = this.style.overflow;
  92                                 }
  93                         }
  94
  95                         if ( opt.overflow != null )
  96                                 this.style.overflow = "hidden";
  97
  98                         opt.curAnim = jQuery.extend({}, prop);
  99
 100                         jQuery.each( prop, function(name, val){
 101                                 var e = new jQuery.fx( self, opt, name );
 102
 103                                 if ( /toggle|show|hide/.test(val) )
 104                                         e[ val == "toggle" ? hidden ? "show" : "hide" : val ]( prop );
 105                                 else {
 106                                         var parts = val.toString().match(/^([+-]=)?([\d+-.]+)(.*)$/),
 107                                                 start = e.cur(true) || 0;
 108
 109                                         if ( parts ) {
 110                                                 var end = parseFloat(parts[2]),
 111                                                         unit = parts[3] || "px";
 112
 113                                                 // We need to compute starting value
 114                                                 if ( unit != "px" ) {
 115                                                         self.style[ name ] = (end || 1) + unit;
 116                                                         start = ((end || 1) / e.cur(true)) * start;
 117                                                         self.style[ name ] = start + unit;
 118                                                 }
 119
 120                                                 // If a +=/-= token was provided, we're doing a relative animation
 121                                                 if ( parts[1] )
 122                                                         end = ((parts[1] == "-=" ? -1 : 1) * end) + start;
 123
 124                                                 e.custom( start, end, unit );
 125                                         } else
 126                                                 e.custom( start, val, "" );
 127                                 }
 128                         });
 129
 130                         // For JS strict compliance
 131                         return true;
 132                 });
 133         },
 134
 135         queue: function(type, fn){
 136                 if ( jQuery.isFunction(type) || ( type && type.constructor == Array )) {
 137                         fn = type;
 138                         type = "fx";
 139                 }
 140
 141                 if ( !type || (typeof type == "string" && !fn) )
 142                         return queue( this[0], type );
 143
 144                 return this.each(function(){
 145                         if ( fn.constructor == Array )
 146                                 queue(this, type, fn);
 147                         else {
 148                                 queue(this, type).push( fn );
 149
 150                                 if ( queue(this, type).length == 1 )
 151                                         fn.apply(this);
 152                         }
 153                 });
 154         },
 155
 156         stop: function(clearQueue, gotoEnd){
 157                 var timers = jQuery.timers;
 158
 159                 if (clearQueue)
 160                         this.queue([]);
 161
 162                 this.each(function(){
 163                         // go in reverse order so anything added to the queue during the loop is ignored
 164                         for ( var i = timers.length - 1; i >= 0; i-- )
 165                                 if ( timers[i].elem == this ) {
 166                                         if (gotoEnd)
 167                                                 // force the next step to be the last
 168                                                 timers[i](true);
 169                                         timers.splice(i, 1);
 170                                 }
 171                 });
 172
 173                 // start the next in the queue if the last step wasn't forced
 174                 if (!gotoEnd)
 175                         this.dequeue();
 176
 177                 return this;
 178         }
 179
 180 });
 181
 182 var queue = function( elem, type, array ) {
 183         if ( !elem )
 184                 return undefined;
 185
 186         type = type || "fx";
 187
 188         var q = jQuery.data( elem, type + "queue" );
 189
 190         if ( !q || array )
 191                 q = jQuery.data( elem, type + "queue", jQuery.makeArray(array) );
 192
 193         return q;
 194 };
 195
 196 jQuery.fn.dequeue = function(type){
 197         type = type || "fx";
 198
 199         return this.each(function(){
 200                 var q = queue(this, type);
 201
 202                 q.shift();
 203
 204                 if ( q.length )
 205                         q[0].apply( this );
 206         });
 207 };
 208
 209 jQuery.extend({
 210
 211         speed: function(speed, easing, fn) {
 212                 var opt = speed && speed.constructor == Object ? speed : {
 213                         complete: fn || !fn && easing ||
 214                                 jQuery.isFunction( speed ) && speed,
 215                         duration: speed,
 216                         easing: fn && easing || easing && easing.constructor != Function && easing
 217                 };
 218
 219                 opt.duration = (opt.duration && opt.duration.constructor == Number ?
 220                         opt.duration :
 221                         { slow: 600, fast: 200 }[opt.duration]) || 400;
 222
 223                 // Queueing
 224                 opt.old = opt.complete;
 225                 opt.complete = function(){
 226                         if ( opt.queue !== false )
 227                                 jQuery(this).dequeue();
 228                         if ( jQuery.isFunction( opt.old ) )
 229                                 opt.old.apply( this );
 230                 };
 231
 232                 return opt;
 233         },
 234
 235         easing: {
 236                 linear: function( p, n, firstNum, diff ) {
 237                         return firstNum + diff * p;
 238                 },
 239                 swing: function( p, n, firstNum, diff ) {
 240                         return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
 241                 }
 242         },
 243
 244         timers: [],
 245         timerId: null,
 246
 247         fx: function( elem, options, prop ){
 248                 this.options = options;
 249                 this.elem = elem;
 250                 this.prop = prop;
 251
 252                 if ( !options.orig )
 253                         options.orig = {};
 254         }
 255
 256 });
 257
 258 jQuery.fx.prototype = {
 259
 260         // Simple function for setting a style value
 261         update: function(){
 262                 if ( this.options.step )
 263                         this.options.step.apply( this.elem, [ this.now, this ] );
 264
 265                 (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
 266
 267                 // Set display property to block for height/width animations
 268                 if ( this.prop == "height" || this.prop == "width" )
 269                         this.elem.style.display = "block";
 270         },
 271
 272         // Get the current size
 273         cur: function(force){
 274                 if ( this.elem[this.prop] != null && this.elem.style[this.prop] == null )
 275                         return this.elem[ this.prop ];
 276
 277                 var r = parseFloat(jQuery.css(this.elem, this.prop, force));
 278                 return r && r > -10000 ? r : parseFloat(jQuery.curCSS(this.elem, this.prop)) || 0;
 279         },
 280
 281         // Start an animation from one number to another
 282         custom: function(from, to, unit){
 283                 this.startTime = (new Date()).getTime();
 284                 this.start = from;
 285                 this.end = to;
 286                 this.unit = unit || this.unit || "px";
 287                 this.now = this.start;
 288                 this.pos = this.state = 0;
 289                 this.update();
 290
 291                 var self = this;
 292                 function t(gotoEnd){
 293                         return self.step(gotoEnd);
 294                 }
 295
 296                 t.elem = this.elem;
 297
 298                 jQuery.timers.push(t);
 299
 300                 if ( jQuery.timerId == null ) {
 301                         jQuery.timerId = setInterval(function(){
 302                                 var timers = jQuery.timers;
 303
 304                                 for ( var i = 0; i < timers.length; i++ )
 305                                         if ( !timers[i]() )
 306                                                 timers.splice(i--, 1);
 307
 308                                 if ( !timers.length ) {
 309                                         clearInterval( jQuery.timerId );
 310                                         jQuery.timerId = null;
 311                                 }
 312                         }, 13);
 313                 }
 314         },
 315
 316         // Simple 'show' function
 317         show: function(){
 318                 // Remember where we started, so that we can go back to it later
 319                 this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
 320                 this.options.show = true;
 321
 322                 // Begin the animation
 323                 this.custom(0, this.cur());
 324
 325                 // Make sure that we start at a small width/height to avoid any
 326                 // flash of content
 327                 if ( this.prop == "width" || this.prop == "height" )
 328                         this.elem.style[this.prop] = "1px";
 329
 330                 // Start by showing the element
 331                 jQuery(this.elem).show();
 332         },
 333
 334         // Simple 'hide' function
 335         hide: function(){
 336                 // Remember where we started, so that we can go back to it later
 337                 this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
 338                 this.options.hide = true;
 339
 340                 // Begin the animation
 341                 this.custom(this.cur(), 0);
 342         },
 343
 344         // Each step of an animation
 345         step: function(gotoEnd){
 346                 var t = (new Date()).getTime();
 347
 348                 if ( gotoEnd || t > this.options.duration + this.startTime ) {
 349                         this.now = this.end;
 350                         this.pos = this.state = 1;
 351                         this.update();
 352
 353                         this.options.curAnim[ this.prop ] = true;
 354
 355                         var done = true;
 356                         for ( var i in this.options.curAnim )
 357                                 if ( this.options.curAnim[i] !== true )
 358                                         done = false;
 359
 360                         if ( done ) {
 361                                 if ( this.options.display != null ) {
 362                                         // Reset the overflow
 363                                         this.elem.style.overflow = this.options.overflow;
 364
 365                                         // Reset the display
 366                                         this.elem.style.display = this.options.display;
 367                                         if ( jQuery.css(this.elem, "display") == "none" )
 368                                                 this.elem.style.display = "block";
 369                                 }
 370
 371                                 // Hide the element if the "hide" operation was done
 372                                 if ( this.options.hide )
 373                                         this.elem.style.display = "none";
 374
 375                                 // Reset the properties, if the item has been hidden or shown
 376                                 if ( this.options.hide || this.options.show )
 377                                         for ( var p in this.options.curAnim )
 378                                                 jQuery.attr(this.elem.style, p, this.options.orig[p]);
 379                         }
 380
 381                         // If a callback was provided, execute it
 382                         if ( done && jQuery.isFunction( this.options.complete ) )
 383                                 // Execute the complete function
 384                                 this.options.complete.apply( this.elem );
 385
 386                         return false;
 387                 } else {
 388                         var n = t - this.startTime;
 389                         this.state = n / this.options.duration;
 390
 391                         // Perform the easing function, defaults to swing
 392                         this.pos = jQuery.easing[this.options.easing || (jQuery.easing.swing ? "swing" : "linear")](this.state, n, 0, 1, this.options.duration);
 393                         this.now = this.start + ((this.end - this.start) * this.pos);
 394
 395                         // Perform the next step of the animation
 396                         this.update();
 397                 }
 398
 399                 return true;
 400         }
 401
 402 };
 403
 404 jQuery.fx.step = {
 405         scrollLeft: function(fx){
 406                 fx.elem.scrollLeft = fx.now;
 407         },
 408
 409         scrollTop: function(fx){
 410                 fx.elem.scrollTop = fx.now;
 411         },
 412
 413         opacity: function(fx){
 414                 jQuery.attr(fx.elem.style, "opacity", fx.now);
 415         },
 416
 417         _default: function(fx){
 418                 fx.elem.style[ fx.prop ] = fx.now + fx.unit;
 419         }
 420 };