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.apply( this, arguments ) :
  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
  77                         var opt = jQuery.extend({}, optall), p,
  78                                 hidden = this.nodeType == 1 && jQuery(this).is(":hidden"),
  79                                 self = this;
  80
  81                         for ( p in prop ) {
  82                                 if ( prop[p] == "hide" && hidden || prop[p] == "show" && !hidden )
  83                                         return opt.complete.call(this);
  84
  85                                 if ( ( p == "height" || p == "width" ) && this.style ) {
  86                                         // Store display property
  87                                         opt.display = jQuery.css(this, "display");
  88
  89                                         // Make sure that nothing sneaks out
  90                                         opt.overflow = this.style.overflow;
  91                                 }
  92                         }
  93
  94                         if ( opt.overflow != null )
  95                                 this.style.overflow = "hidden";
  96
  97                         opt.curAnim = jQuery.extend({}, prop);
  98
  99                         jQuery.each( prop, function(name, val){
 100                                 var e = new jQuery.fx( self, opt, name );
 101
 102                                 if ( /toggle|show|hide/.test(val) )
 103                                         e[ val == "toggle" ? hidden ? "show" : "hide" : val ]( prop );
 104                                 else {
 105                                         var parts = val.toString().match(/^([+-]=)?([\d+-.]+)(.*)$/),
 106                                                 start = e.cur(true) || 0;
 107
 108                                         if ( parts ) {
 109                                                 var end = parseFloat(parts[2]),
 110                                                         unit = parts[3] || "px";
 111
 112                                                 // We need to compute starting value
 113                                                 if ( unit != "px" ) {
 114                                                         self.style[ name ] = (end || 1) + unit;
 115                                                         start = ((end || 1) / e.cur(true)) * start;
 116                                                         self.style[ name ] = start + unit;
 117                                                 }
 118
 119                                                 // If a +=/-= token was provided, we're doing a relative animation
 120                                                 if ( parts[1] )
 121                                                         end = ((parts[1] == "-=" ? -1 : 1) * end) + start;
 122
 123                                                 e.custom( start, end, unit );
 124                                         } else
 125                                                 e.custom( start, val, "" );
 126                                 }
 127                         });
 128
 129                         // For JS strict compliance
 130                         return true;
 131                 });
 132         },
 133
 134         queue: function(type, fn){
 135                 if ( jQuery.isFunction(type) || ( type && type.constructor == Array )) {
 136                         fn = type;
 137                         type = "fx";
 138                 }
 139
 140                 if ( !type || (typeof type == "string" && !fn) )
 141                         return queue( this[0], type );
 142
 143                 return this.each(function(){
 144                         if ( fn.constructor == Array )
 145                                 queue(this, type, fn);
 146                         else {
 147                                 queue(this, type).push( fn );
 148
 149                                 if ( queue(this, type).length == 1 )
 150                                         fn.call(this);
 151                         }
 152                 });
 153         },
 154
 155         stop: function(clearQueue, gotoEnd){
 156                 var timers = jQuery.timers;
 157
 158                 if (clearQueue)
 159                         this.queue([]);
 160
 161                 this.each(function(){
 162                         // go in reverse order so anything added to the queue during the loop is ignored
 163                         for ( var i = timers.length - 1; i >= 0; i-- )
 164                                 if ( timers[i].elem == this ) {
 165                                         if (gotoEnd)
 166                                                 // force the next step to be the last
 167                                                 timers[i](true);
 168                                         timers.splice(i, 1);
 169                                 }
 170                 });
 171
 172                 // start the next in the queue if the last step wasn't forced
 173                 if (!gotoEnd)
 174                         this.dequeue();
 175
 176                 return this;
 177         }
 178
 179 });
 180
 181 var queue = function( elem, type, array ) {
 182         if ( elem ){
 183
 184                 type = type || "fx";
 185
 186                 var q = jQuery.data( elem, type + "queue" );
 187
 188                 if ( !q || array )
 189                         q = jQuery.data( elem, type + "queue", jQuery.makeArray(array) );
 190
 191         }
 192         return q;
 193 };
 194
 195 jQuery.fn.dequeue = function(type){
 196         type = type || "fx";
 197
 198         return this.each(function(){
 199                 var q = queue(this, type);
 200
 201                 q.shift();
 202
 203                 if ( q.length )
 204                         q[0].call( this );
 205         });
 206 };
 207
 208 jQuery.extend({
 209
 210         speed: function(speed, easing, fn) {
 211                 var opt = speed && speed.constructor == Object ? speed : {
 212                         complete: fn || !fn && easing ||
 213                                 jQuery.isFunction( speed ) && speed,
 214                         duration: speed,
 215                         easing: fn && easing || easing && easing.constructor != Function && easing
 216                 };
 217
 218                 opt.duration = (opt.duration && opt.duration.constructor == Number ?
 219                         opt.duration :
 220                         jQuery.fx.speeds[opt.duration]) || jQuery.fx.speeds._default;
 221
 222                 // Queueing
 223                 opt.old = opt.complete;
 224                 opt.complete = function(){
 225                         if ( opt.queue !== false )
 226                                 jQuery(this).dequeue();
 227                         if ( jQuery.isFunction( opt.old ) )
 228                                 opt.old.call( this );
 229                 };
 230
 231                 return opt;
 232         },
 233
 234         easing: {
 235                 linear: function( p, n, firstNum, diff ) {
 236                         return firstNum + diff * p;
 237                 },
 238                 swing: function( p, n, firstNum, diff ) {
 239                         return ((-Math.cos(p*Math.PI)/2) + 0.5) * diff + firstNum;
 240                 }
 241         },
 242
 243         timers: [],
 244         timerId: null,
 245
 246         fx: function( elem, options, prop ){
 247                 this.options = options;
 248                 this.elem = elem;
 249                 this.prop = prop;
 250
 251                 if ( !options.orig )
 252                         options.orig = {};
 253         }
 254
 255 });
 256
 257 jQuery.fx.prototype = {
 258
 259         // Simple function for setting a style value
 260         update: function(){
 261                 if ( this.options.step )
 262                         this.options.step.call( this.elem, this.now, this );
 263
 264                 (jQuery.fx.step[this.prop] || jQuery.fx.step._default)( this );
 265
 266                 // Set display property to block for height/width animations
 267                 if ( ( this.prop == "height" || this.prop == "width" ) && this.elem.style )
 268                         this.elem.style.display = "block";
 269         },
 270
 271         // Get the current size
 272         cur: function(force){
 273                 if ( this.elem[this.prop] != null && (!this.elem.style || this.elem.style[this.prop] == null) )
 274                         return this.elem[ this.prop ];
 275
 276                 var r = parseFloat(jQuery.css(this.elem, this.prop, force));
 277                 return r && r > -10000 ? r : parseFloat(jQuery.curCSS(this.elem, this.prop)) || 0;
 278         },
 279
 280         // Start an animation from one number to another
 281         custom: function(from, to, unit){
 282                 this.startTime = now();
 283                 this.start = from;
 284                 this.end = to;
 285                 this.unit = unit || this.unit || "px";
 286                 this.now = this.start;
 287                 this.pos = this.state = 0;
 288                 this.update();
 289
 290                 var self = this;
 291                 function t(gotoEnd){
 292                         return self.step(gotoEnd);
 293                 }
 294
 295                 t.elem = this.elem;
 296
 297                 jQuery.timers.push(t);
 298
 299                 if ( jQuery.timerId == null ) {
 300                         jQuery.timerId = setInterval(function(){
 301                                 var timers = jQuery.timers;
 302
 303                                 for ( var i = 0; i < timers.length; i++ )
 304                                         if ( !timers[i]() )
 305                                                 timers.splice(i--, 1);
 306
 307                                 if ( !timers.length ) {
 308                                         clearInterval( jQuery.timerId );
 309                                         jQuery.timerId = null;
 310                                 }
 311                         }, 13);
 312                 }
 313         },
 314
 315         // Simple 'show' function
 316         show: function(){
 317                 // Remember where we started, so that we can go back to it later
 318                 this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
 319                 this.options.show = true;
 320
 321                 // Begin the animation
 322                 this.custom(0, this.cur());
 323
 324                 // Make sure that we start at a small width/height to avoid any
 325                 // flash of content
 326                 if ( this.prop == "width" || this.prop == "height" )
 327                         this.elem.style[this.prop] = "1px";
 328
 329                 // Start by showing the element
 330                 jQuery(this.elem).show();
 331         },
 332
 333         // Simple 'hide' function
 334         hide: function(){
 335                 // Remember where we started, so that we can go back to it later
 336                 this.options.orig[this.prop] = jQuery.attr( this.elem.style, this.prop );
 337                 this.options.hide = true;
 338
 339                 // Begin the animation
 340                 this.custom(this.cur(), 0);
 341         },
 342
 343         // Each step of an animation
 344         step: function(gotoEnd){
 345                 var t = now();
 346
 347                 if ( gotoEnd || t > this.options.duration + this.startTime ) {
 348                         this.now = this.end;
 349                         this.pos = this.state = 1;
 350                         this.update();
 351
 352                         this.options.curAnim[ this.prop ] = true;
 353
 354                         var done = true;
 355                         for ( var i in this.options.curAnim )
 356                                 if ( this.options.curAnim[i] !== true )
 357                                         done = false;
 358
 359                         if ( done ) {
 360                                 if ( this.options.display != null ) {
 361                                         // Reset the overflow
 362                                         this.elem.style.overflow = this.options.overflow;
 363
 364                                         // Reset the display
 365                                         this.elem.style.display = this.options.display;
 366                                         if ( jQuery.css(this.elem, "display") == "none" )
 367                                                 this.elem.style.display = "block";
 368                                 }
 369
 370                                 // Hide the element if the "hide" operation was done
 371                                 if ( this.options.hide )
 372                                         this.elem.style.display = "none";
 373
 374                                 // Reset the properties, if the item has been hidden or shown
 375                                 if ( this.options.hide || this.options.show )
 376                                         for ( var p in this.options.curAnim )
 377                                                 jQuery.attr(this.elem.style, p, this.options.orig[p]);
 378                         }
 379
 380                         if ( done )
 381                                 // Execute the complete function
 382                                 this.options.complete.call( this.elem );
 383
 384                         return false;
 385                 } else {
 386                         var n = t - this.startTime;
 387                         this.state = n / this.options.duration;
 388
 389                         // Perform the easing function, defaults to swing
 390                         this.pos = jQuery.easing[this.options.easing || (jQuery.easing.swing ? "swing" : "linear")](this.state, n, 0, 1, this.options.duration);
 391                         this.now = this.start + ((this.end - this.start) * this.pos);
 392
 393                         // Perform the next step of the animation
 394                         this.update();
 395                 }
 396
 397                 return true;
 398         }
 399
 400 };
 401
 402 jQuery.extend( jQuery.fx, {
 403         speeds:{
 404                 slow: 600,
 405                 fast: 200,
 406                 // Default speed
 407                 _default: 400
 408         },
 409         step: {
 410
 411                 opacity: function(fx){
 412                         jQuery.attr(fx.elem.style, "opacity", fx.now);
 413                 },
 414
 415                 _default: function(fx){
 416                         if( fx.prop in fx.elem )
 417                                 fx.elem[ fx.prop ] = fx.now;
 418                         else if( fx.elem.style )
 419                                 fx.elem.style[ fx.prop ] = fx.now + fx.unit;
 420                 }
 421         }
 422 });