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   1  /*

   2   * jQuery UI Slider 1.7.3

   3   *

   4   * Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)

   5   * Dual licensed under the MIT (MIT-LICENSE.txt)

   6   * and GPL (GPL-LICENSE.txt) licenses.

   7   *

   8   * http://docs.jquery.com/UI/Slider

   9   *

  10   * Depends:

  11   *    ui.core.js

  12   */
  13  
  14  (function($) {
  15  
  16  $.widget("ui.slider", $.extend({}, $.ui.mouse, {
  17  
  18      _init: function() {
  19  
  20          var self = this, o = this.options;
  21          this._keySliding = false;
  22          this._handleIndex = null;
  23          this._detectOrientation();
  24          this._mouseInit();
  25  
  26          this.element
  27              .addClass("ui-slider"
  28                  + " ui-slider-" + this.orientation
  29                  + " ui-widget"
  30                  + " ui-widget-content"
  31                  + " ui-corner-all");
  32  
  33          this.range = $([]);
  34  
  35          if (o.range) {
  36  
  37              if (o.range === true) {
  38                  this.range = $('<div></div>');
  39                  if (!o.values) o.values = [this._valueMin(), this._valueMin()];
  40                  if (o.values.length && o.values.length != 2) {
  41                      o.values = [o.values[0], o.values[0]];
  42                  }
  43              } else {
  44                  this.range = $('<div></div>');
  45              }
  46  
  47              this.range
  48                  .appendTo(this.element)
  49                  .addClass("ui-slider-range");
  50  
  51              if (o.range == "min" || o.range == "max") {
  52                  this.range.addClass("ui-slider-range-" + o.range);
  53              }
  54  
  55              // note: this isn't the most fittingly semantic framework class for this element,

  56              // but worked best visually with a variety of themes

  57              this.range.addClass("ui-widget-header");
  58  
  59          }
  60  
  61          if ($(".ui-slider-handle", this.element).length == 0)
  62              $('<a href="#"></a>')
  63                  .appendTo(this.element)
  64                  .addClass("ui-slider-handle");
  65  
  66          if (o.values && o.values.length) {
  67              while ($(".ui-slider-handle", this.element).length < o.values.length)
  68                  $('<a href="#"></a>')
  69                      .appendTo(this.element)
  70                      .addClass("ui-slider-handle");
  71          }
  72  
  73          this.handles = $(".ui-slider-handle", this.element)
  74              .addClass("ui-state-default"
  75                  + " ui-corner-all");
  76  
  77          this.handle = this.handles.eq(0);
  78  
  79          this.handles.add(this.range).filter("a")
  80              .click(function(event) {
  81                  event.preventDefault();
  82              })
  83              .hover(function() {
  84                  if (!o.disabled) {
  85                      $(this).addClass('ui-state-hover');
  86                  }
  87              }, function() {
  88                  $(this).removeClass('ui-state-hover');
  89              })
  90              .focus(function() {
  91                  if (!o.disabled) {
  92                      $(".ui-slider .ui-state-focus").removeClass('ui-state-focus'); $(this).addClass('ui-state-focus');
  93                  } else {
  94                      $(this).blur();
  95                  }
  96              })
  97              .blur(function() {
  98                  $(this).removeClass('ui-state-focus');
  99              });
 100  
 101          this.handles.each(function(i) {
 102              $(this).data("index.ui-slider-handle", i);
 103          });
 104  
 105          this.handles.keydown(function(event) {
 106  
 107              var ret = true;
 108  
 109              var index = $(this).data("index.ui-slider-handle");
 110  
 111              if (self.options.disabled)
 112                  return;
 113  
 114              switch (event.keyCode) {
 115                  case $.ui.keyCode.HOME:
 116                  case $.ui.keyCode.END:
 117                  case $.ui.keyCode.UP:
 118                  case $.ui.keyCode.RIGHT:
 119                  case $.ui.keyCode.DOWN:
 120                  case $.ui.keyCode.LEFT:
 121                      ret = false;
 122                      if (!self._keySliding) {
 123                          self._keySliding = true;
 124                          $(this).addClass("ui-state-active");
 125                          self._start(event, index);
 126                      }
 127                      break;
 128              }
 129  
 130              var curVal, newVal, step = self._step();
 131              if (self.options.values && self.options.values.length) {
 132                  curVal = newVal = self.values(index);
 133              } else {
 134                  curVal = newVal = self.value();
 135              }
 136  
 137              switch (event.keyCode) {
 138                  case $.ui.keyCode.HOME:
 139                      newVal = self._valueMin();
 140                      break;
 141                  case $.ui.keyCode.END:
 142                      newVal = self._valueMax();
 143                      break;
 144                  case $.ui.keyCode.UP:
 145                  case $.ui.keyCode.RIGHT:
 146                      if(curVal == self._valueMax()) return;
 147                      newVal = curVal + step;
 148                      break;
 149                  case $.ui.keyCode.DOWN:
 150                  case $.ui.keyCode.LEFT:
 151                      if(curVal == self._valueMin()) return;
 152                      newVal = curVal - step;
 153                      break;
 154              }
 155  
 156              self._slide(event, index, newVal);
 157  
 158              return ret;
 159  
 160          }).keyup(function(event) {
 161  
 162              var index = $(this).data("index.ui-slider-handle");
 163  
 164              if (self._keySliding) {
 165                  self._stop(event, index);
 166                  self._change(event, index);
 167                  self._keySliding = false;
 168                  $(this).removeClass("ui-state-active");
 169              }
 170  
 171          });
 172  
 173          this._refreshValue();
 174  
 175      },
 176  
 177      destroy: function() {
 178  
 179          this.handles.remove();
 180          this.range.remove();
 181  
 182          this.element
 183              .removeClass("ui-slider"
 184                  + " ui-slider-horizontal"
 185                  + " ui-slider-vertical"
 186                  + " ui-slider-disabled"
 187                  + " ui-widget"
 188                  + " ui-widget-content"
 189                  + " ui-corner-all")
 190              .removeData("slider")
 191              .unbind(".slider");
 192  
 193          this._mouseDestroy();
 194  
 195      },
 196  
 197      _mouseCapture: function(event) {
 198  
 199          var o = this.options;
 200  
 201          if (o.disabled)
 202              return false;
 203  
 204          this.elementSize = {
 205              width: this.element.outerWidth(),
 206              height: this.element.outerHeight()
 207          };
 208          this.elementOffset = this.element.offset();
 209  
 210          var position = { x: event.pageX, y: event.pageY };
 211          var normValue = this._normValueFromMouse(position);
 212  
 213          var distance = this._valueMax() - this._valueMin() + 1, closestHandle;
 214          var self = this, index;
 215          this.handles.each(function(i) {
 216              var thisDistance = Math.abs(normValue - self.values(i));
 217              if (distance > thisDistance) {
 218                  distance = thisDistance;
 219                  closestHandle = $(this);
 220                  index = i;
 221              }
 222          });
 223  
 224          // workaround for bug #3736 (if both handles of a range are at 0,

 225          // the first is always used as the one with least distance,

 226          // and moving it is obviously prevented by preventing negative ranges)

 227          if(o.range == true && this.values(1) == o.min) {
 228              closestHandle = $(this.handles[++index]);
 229          }
 230  
 231          this._start(event, index);
 232  
 233          self._handleIndex = index;
 234  
 235          closestHandle
 236              .addClass("ui-state-active")
 237              .focus();
 238          
 239          var offset = closestHandle.offset();
 240          var mouseOverHandle = !$(event.target).parents().andSelf().is('.ui-slider-handle');
 241          this._clickOffset = mouseOverHandle ? { left: 0, top: 0 } : {
 242              left: event.pageX - offset.left - (closestHandle.width() / 2),
 243              top: event.pageY - offset.top
 244                  - (closestHandle.height() / 2)
 245                  - (parseInt(closestHandle.css('borderTopWidth'),10) || 0)
 246                  - (parseInt(closestHandle.css('borderBottomWidth'),10) || 0)
 247                  + (parseInt(closestHandle.css('marginTop'),10) || 0)
 248          };
 249  
 250          normValue = this._normValueFromMouse(position);
 251          this._slide(event, index, normValue);
 252          return true;
 253  
 254      },
 255  
 256      _mouseStart: function(event) {
 257          return true;
 258      },
 259  
 260      _mouseDrag: function(event) {
 261  
 262          var position = { x: event.pageX, y: event.pageY };
 263          var normValue = this._normValueFromMouse(position);
 264          
 265          this._slide(event, this._handleIndex, normValue);
 266  
 267          return false;
 268  
 269      },
 270  
 271      _mouseStop: function(event) {
 272  
 273          this.handles.removeClass("ui-state-active");
 274          this._stop(event, this._handleIndex);
 275          this._change(event, this._handleIndex);
 276          this._handleIndex = null;
 277          this._clickOffset = null;
 278  
 279          return false;
 280  
 281      },
 282      
 283      _detectOrientation: function() {
 284          this.orientation = this.options.orientation == 'vertical' ? 'vertical' : 'horizontal';
 285      },
 286  
 287      _normValueFromMouse: function(position) {
 288  
 289          var pixelTotal, pixelMouse;
 290          if ('horizontal' == this.orientation) {
 291              pixelTotal = this.elementSize.width;
 292              pixelMouse = position.x - this.elementOffset.left - (this._clickOffset ? this._clickOffset.left : 0);
 293          } else {
 294              pixelTotal = this.elementSize.height;
 295              pixelMouse = position.y - this.elementOffset.top - (this._clickOffset ? this._clickOffset.top : 0);
 296          }
 297  
 298          var percentMouse = (pixelMouse / pixelTotal);
 299          if (percentMouse > 1) percentMouse = 1;
 300          if (percentMouse < 0) percentMouse = 0;
 301          if ('vertical' == this.orientation)
 302              percentMouse = 1 - percentMouse;
 303  
 304          var valueTotal = this._valueMax() - this._valueMin(),
 305              valueMouse = percentMouse * valueTotal,
 306              valueMouseModStep = valueMouse % this.options.step,
 307              normValue = this._valueMin() + valueMouse - valueMouseModStep;
 308  
 309          if (valueMouseModStep > (this.options.step / 2))
 310              normValue += this.options.step;
 311  
 312          // Since JavaScript has problems with large floats, round

 313          // the final value to 5 digits after the decimal point (see #4124)

 314          return parseFloat(normValue.toFixed(5));
 315  
 316      },
 317  
 318      _start: function(event, index) {
 319          var uiHash = {
 320              handle: this.handles[index],
 321              value: this.value()
 322          };
 323          if (this.options.values && this.options.values.length) {
 324              uiHash.value = this.values(index);
 325              uiHash.values = this.values();
 326          }
 327          this._trigger("start", event, uiHash);
 328      },
 329  
 330      _slide: function(event, index, newVal) {
 331  
 332          var handle = this.handles[index];
 333  
 334          if (this.options.values && this.options.values.length) {
 335  
 336              var otherVal = this.values(index ? 0 : 1);
 337  
 338              if ((this.options.values.length == 2 && this.options.range === true) && 
 339                  ((index == 0 && newVal > otherVal) || (index == 1 && newVal < otherVal))){
 340                   newVal = otherVal;
 341              }
 342  
 343              if (newVal != this.values(index)) {
 344                  var newValues = this.values();
 345                  newValues[index] = newVal;
 346                  // A slide can be canceled by returning false from the slide callback

 347                  var allowed = this._trigger("slide", event, {
 348                      handle: this.handles[index],
 349                      value: newVal,
 350                      values: newValues
 351                  });
 352                  var otherVal = this.values(index ? 0 : 1);
 353                  if (allowed !== false) {
 354                      this.values(index, newVal, ( event.type == 'mousedown' && this.options.animate ), true);
 355                  }
 356              }
 357  
 358          } else {
 359  
 360              if (newVal != this.value()) {
 361                  // A slide can be canceled by returning false from the slide callback

 362                  var allowed = this._trigger("slide", event, {
 363                      handle: this.handles[index],
 364                      value: newVal
 365                  });
 366                  if (allowed !== false) {
 367                      this._setData('value', newVal, ( event.type == 'mousedown' && this.options.animate ));
 368                  }
 369                      
 370              }
 371  
 372          }
 373  
 374      },
 375  
 376      _stop: function(event, index) {
 377          var uiHash = {
 378              handle: this.handles[index],
 379              value: this.value()
 380          };
 381          if (this.options.values && this.options.values.length) {
 382              uiHash.value = this.values(index);
 383              uiHash.values = this.values();
 384          }
 385          this._trigger("stop", event, uiHash);
 386      },
 387  
 388      _change: function(event, index) {
 389          var uiHash = {
 390              handle: this.handles[index],
 391              value: this.value()
 392          };
 393          if (this.options.values && this.options.values.length) {
 394              uiHash.value = this.values(index);
 395              uiHash.values = this.values();
 396          }
 397          this._trigger("change", event, uiHash);
 398      },
 399  
 400      value: function(newValue) {
 401  
 402          if (arguments.length) {
 403              this._setData("value", newValue);
 404              this._change(null, 0);
 405          }
 406  
 407          return this._value();
 408  
 409      },
 410  
 411      values: function(index, newValue, animated, noPropagation) {
 412  
 413          if (arguments.length > 1) {
 414              this.options.values[index] = newValue;
 415              this._refreshValue(animated);
 416              if(!noPropagation) this._change(null, index);
 417          }
 418  
 419          if (arguments.length) {
 420              if (this.options.values && this.options.values.length) {
 421                  return this._values(index);
 422              } else {
 423                  return this.value();
 424              }
 425          } else {
 426              return this._values();
 427          }
 428  
 429      },
 430  
 431      _setData: function(key, value, animated) {
 432  
 433          $.widget.prototype._setData.apply(this, arguments);
 434  
 435          switch (key) {
 436              case 'disabled':
 437                  if (value) {
 438                      this.handles.filter(".ui-state-focus").blur();
 439                      this.handles.removeClass("ui-state-hover");
 440                      this.handles.attr("disabled", "disabled");
 441                  } else {
 442                      this.handles.removeAttr("disabled");
 443                  }
 444              case 'orientation':
 445  
 446                  this._detectOrientation();
 447                  
 448                  this.element
 449                      .removeClass("ui-slider-horizontal ui-slider-vertical")
 450                      .addClass("ui-slider-" + this.orientation);
 451                  this._refreshValue(animated);
 452                  break;
 453              case 'value':
 454                  this._refreshValue(animated);
 455                  break;
 456          }
 457  
 458      },
 459  
 460      _step: function() {
 461          var step = this.options.step;
 462          return step;
 463      },
 464  
 465      _value: function() {
 466  
 467          var val = this.options.value;
 468          if (val < this._valueMin()) val = this._valueMin();
 469          if (val > this._valueMax()) val = this._valueMax();
 470  
 471          return val;
 472  
 473      },
 474  
 475      _values: function(index) {
 476  
 477          if (arguments.length) {
 478              var val = this.options.values[index];
 479              if (val < this._valueMin()) val = this._valueMin();
 480              if (val > this._valueMax()) val = this._valueMax();
 481  
 482              return val;
 483          } else {
 484              return this.options.values;
 485          }
 486  
 487      },
 488  
 489      _valueMin: function() {
 490          var valueMin = this.options.min;
 491          return valueMin;
 492      },
 493  
 494      _valueMax: function() {
 495          var valueMax = this.options.max;
 496          return valueMax;
 497      },
 498  
 499      _refreshValue: function(animate) {
 500  
 501          var oRange = this.options.range, o = this.options, self = this;
 502  
 503          if (this.options.values && this.options.values.length) {
 504              var vp0, vp1;
 505              this.handles.each(function(i, j) {
 506                  var valPercent = (self.values(i) - self._valueMin()) / (self._valueMax() - self._valueMin()) * 100;
 507                  var _set = {}; _set[self.orientation == 'horizontal' ? 'left' : 'bottom'] = valPercent + '%';
 508                  $(this).stop(1,1)[animate ? 'animate' : 'css'](_set, o.animate);
 509                  if (self.options.range === true) {
 510                      if (self.orientation == 'horizontal') {
 511                          (i == 0) && self.range.stop(1,1)[animate ? 'animate' : 'css']({ left: valPercent + '%' }, o.animate);
 512                          (i == 1) && self.range[animate ? 'animate' : 'css']({ width: (valPercent - lastValPercent) + '%' }, { queue: false, duration: o.animate });
 513                      } else {
 514                          (i == 0) && self.range.stop(1,1)[animate ? 'animate' : 'css']({ bottom: (valPercent) + '%' }, o.animate);
 515                          (i == 1) && self.range[animate ? 'animate' : 'css']({ height: (valPercent - lastValPercent) + '%' }, { queue: false, duration: o.animate });
 516                      }
 517                  }
 518                  lastValPercent = valPercent;
 519              });
 520          } else {
 521              var value = this.value(),
 522                  valueMin = this._valueMin(),
 523                  valueMax = this._valueMax(),
 524                  valPercent = valueMax != valueMin
 525                      ? (value - valueMin) / (valueMax - valueMin) * 100
 526                      : 0;
 527              var _set = {}; _set[self.orientation == 'horizontal' ? 'left' : 'bottom'] = valPercent + '%';
 528              this.handle.stop(1,1)[animate ? 'animate' : 'css'](_set, o.animate);
 529  
 530              (oRange == "min") && (this.orientation == "horizontal") && this.range.stop(1,1)[animate ? 'animate' : 'css']({ width: valPercent + '%' }, o.animate);
 531              (oRange == "max") && (this.orientation == "horizontal") && this.range[animate ? 'animate' : 'css']({ width: (100 - valPercent) + '%' }, { queue: false, duration: o.animate });
 532              (oRange == "min") && (this.orientation == "vertical") && this.range.stop(1,1)[animate ? 'animate' : 'css']({ height: valPercent + '%' }, o.animate);
 533              (oRange == "max") && (this.orientation == "vertical") && this.range[animate ? 'animate' : 'css']({ height: (100 - valPercent) + '%' }, { queue: false, duration: o.animate });
 534          }
 535  
 536      }
 537      
 538  }));
 539  
 540  $.extend($.ui.slider, {
 541      getter: "value values",
 542      version: "1.7.3",
 543      eventPrefix: "slide",
 544      defaults: {
 545          animate: false,
 546          delay: 0,
 547          distance: 0,
 548          max: 100,
 549          min: 0,
 550          orientation: 'horizontal',
 551          range: false,
 552          step: 1,
 553          value: 0,
 554          values: null
 555      }
 556  });
 557  
 558  })(jQuery);