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   1  /*
   2  YUI 3.17.2 (build 9c3c78e)
   3  Copyright 2014 Yahoo! Inc. All rights reserved.
   4  Licensed under the BSD License.
   5  http://yuilibrary.com/license/
   6  */
   7  
   8  YUI.add('transition-timer', function (Y, NAME) {
   9  
  10  /**
  11  * Provides the base Transition class, for animating numeric properties.
  12  *
  13  * @module transition
  14  * @submodule transition-timer
  15  */
  16  
  17  
  18  var Transition = Y.Transition;
  19  
  20  Y.mix(Transition.prototype, {
  21      _start: function() {
  22          if (Transition.useNative) {
  23              this._runNative();
  24          } else {
  25              this._runTimer();
  26          }
  27      },
  28  
  29      _runTimer: function() {
  30          var anim = this;
  31          anim._initAttrs();
  32  
  33          Transition._running[Y.stamp(anim)] = anim;
  34          anim._startTime = new Date();
  35          Transition._startTimer();
  36      },
  37  
  38      _endTimer: function() {
  39          var anim = this;
  40          delete Transition._running[Y.stamp(anim)];
  41          anim._startTime = null;
  42      },
  43  
  44      _runFrame: function() {
  45          var t = new Date() - this._startTime;
  46          this._runAttrs(t);
  47      },
  48  
  49      _runAttrs: function(time) {
  50          var anim = this,
  51              node = anim._node,
  52              config = anim._config,
  53              uid = Y.stamp(node),
  54              attrs = Transition._nodeAttrs[uid],
  55              customAttr = Transition.behaviors,
  56              done = false,
  57              allDone = false,
  58              data,
  59              name,
  60              attribute,
  61              setter,
  62              elapsed,
  63              delay,
  64              d,
  65              t,
  66              i;
  67  
  68          for (name in attrs) {
  69              if ((attribute = attrs[name]) && attribute.transition === anim) {
  70                  d = attribute.duration;
  71                  delay = attribute.delay;
  72                  elapsed = (time - delay) / 1000;
  73                  t = time;
  74                  data = {
  75                      type: 'propertyEnd',
  76                      propertyName: name,
  77                      config: config,
  78                      elapsedTime: elapsed
  79                  };
  80  
  81                  setter = (i in customAttr && 'set' in customAttr[i]) ?
  82                          customAttr[i].set : Transition.DEFAULT_SETTER;
  83  
  84                  done = (t >= d);
  85  
  86                  if (t > d) {
  87                      t = d;
  88                  }
  89  
  90                  if (!delay || time >= delay) {
  91                      setter(anim, name, attribute.from, attribute.to, t - delay, d - delay,
  92                          attribute.easing, attribute.unit);
  93  
  94                      if (done) {
  95                          delete attrs[name];
  96                          anim._count--;
  97  
  98                          if (config[name] && config[name].on && config[name].on.end) {
  99                              config[name].on.end.call(Y.one(node), data);
 100                          }
 101  
 102                          //node.fire('transition:propertyEnd', data);
 103  
 104                          if (!allDone && anim._count <= 0) {
 105                              allDone = true;
 106                              anim._end(elapsed);
 107                              anim._endTimer();
 108                          }
 109                      }
 110                  }
 111  
 112              }
 113          }
 114      },
 115  
 116      _initAttrs: function() {
 117          var anim = this,
 118              customAttr = Transition.behaviors,
 119              uid = Y.stamp(anim._node),
 120              attrs = Transition._nodeAttrs[uid],
 121              attribute,
 122              duration,
 123              delay,
 124              easing,
 125              val,
 126              name,
 127              mTo,
 128              mFrom,
 129              unit, begin, end;
 130  
 131          for (name in attrs) {
 132              if ((attribute = attrs[name]) && attribute.transition === anim) {
 133                  duration = attribute.duration * 1000;
 134                  delay = attribute.delay * 1000;
 135                  easing = attribute.easing;
 136                  val = attribute.value;
 137  
 138                  // only allow supported properties
 139                  if (name in anim._node.style || name in Y.DOM.CUSTOM_STYLES) {
 140                      begin = (name in customAttr && 'get' in customAttr[name])  ?
 141                              customAttr[name].get(anim, name) : Transition.DEFAULT_GETTER(anim, name);
 142  
 143                      mFrom = Transition.RE_UNITS.exec(begin);
 144                      mTo = Transition.RE_UNITS.exec(val);
 145  
 146                      begin = mFrom ? mFrom[1] : begin;
 147                      end = mTo ? mTo[1] : val;
 148                      unit = mTo ? mTo[2] : mFrom ?  mFrom[2] : ''; // one might be zero TODO: mixed units
 149  
 150                      if (!unit && Transition.RE_DEFAULT_UNIT.test(name)) {
 151                          unit = Transition.DEFAULT_UNIT;
 152                      }
 153  
 154                      if (typeof easing === 'string') {
 155                          if (easing.indexOf('cubic-bezier') > -1) {
 156                              easing = easing.substring(13, easing.length - 1).split(',');
 157                          } else if (Transition.easings[easing]) {
 158                              easing = Transition.easings[easing];
 159                          }
 160                      }
 161  
 162                      attribute.from = Number(begin);
 163                      attribute.to = Number(end);
 164                      attribute.unit = unit;
 165                      attribute.easing = easing;
 166                      attribute.duration = duration + delay;
 167                      attribute.delay = delay;
 168                  } else {
 169                      delete attrs[name];
 170                      anim._count--;
 171                  }
 172              }
 173          }
 174      },
 175  
 176      destroy: function() {
 177          this.detachAll();
 178          this._node = null;
 179      }
 180  }, true);
 181  
 182  Y.mix(Y.Transition, {
 183      _runtimeAttrs: {},
 184      /*
 185       * Regex of properties that should use the default unit.
 186       *
 187       * @property RE_DEFAULT_UNIT
 188       * @static
 189       */
 190      RE_DEFAULT_UNIT: /^width|height|top|right|bottom|left|margin.*|padding.*|border.*$/i,
 191  
 192      /*
 193       * The default unit to use with properties that pass the RE_DEFAULT_UNIT test.
 194       *
 195       * @property DEFAULT_UNIT
 196       * @static
 197       */
 198      DEFAULT_UNIT: 'px',
 199  
 200      /*
 201       * Time in milliseconds passed to setInterval for frame processing
 202       *
 203       * @property intervalTime
 204       * @default 20
 205       * @static
 206       */
 207      intervalTime: 20,
 208  
 209      /*
 210       * Bucket for custom getters and setters
 211       *
 212       * @property behaviors
 213       * @static
 214       */
 215      behaviors: {
 216          left: {
 217              get: function(anim, attr) {
 218                  return Y.DOM._getAttrOffset(anim._node, attr);
 219              }
 220          }
 221      },
 222  
 223      /*
 224       * The default setter to use when setting object properties.
 225       *
 226       * @property DEFAULT_SETTER
 227       * @static
 228       */
 229      DEFAULT_SETTER: function(anim, att, from, to, elapsed, duration, fn, unit) {
 230          from = Number(from);
 231          to = Number(to);
 232  
 233          var node = anim._node,
 234              val = Transition.cubicBezier(fn, elapsed / duration);
 235  
 236          val = from + val[0] * (to - from);
 237  
 238          if (node) {
 239              if (att in node.style || att in Y.DOM.CUSTOM_STYLES) {
 240                  unit = unit || '';
 241                  Y.DOM.setStyle(node, att, val + unit);
 242              }
 243          } else {
 244              anim._end();
 245          }
 246      },
 247  
 248      /*
 249       * The default getter to use when getting object properties.
 250       *
 251       * @property DEFAULT_GETTER
 252       * @static
 253       */
 254      DEFAULT_GETTER: function(anim, att) {
 255          var node = anim._node,
 256              val = '';
 257  
 258          if (att in node.style || att in Y.DOM.CUSTOM_STYLES) {
 259              val = Y.DOM.getComputedStyle(node, att);
 260          }
 261  
 262          return val;
 263      },
 264  
 265      _startTimer: function() {
 266          if (!Transition._timer) {
 267              Transition._timer = setInterval(Transition._runFrame, Transition.intervalTime);
 268          }
 269      },
 270  
 271      _stopTimer: function() {
 272          clearInterval(Transition._timer);
 273          Transition._timer = null;
 274      },
 275  
 276      /*
 277       * Called per Interval to handle each animation frame.
 278       * @method _runFrame
 279       * @private
 280       * @static
 281       */
 282      _runFrame: function() {
 283          var done = true,
 284              anim;
 285          for (anim in Transition._running) {
 286              if (Transition._running[anim]._runFrame) {
 287                  done = false;
 288                  Transition._running[anim]._runFrame();
 289              }
 290          }
 291  
 292          if (done) {
 293              Transition._stopTimer();
 294          }
 295      },
 296  
 297      cubicBezier: function(p, t) {
 298          var x0 = 0,
 299              y0 = 0,
 300              x1 = p[0],
 301              y1 = p[1],
 302              x2 = p[2],
 303              y2 = p[3],
 304              x3 = 1,
 305              y3 = 0,
 306  
 307              A = x3 - 3 * x2 + 3 * x1 - x0,
 308              B = 3 * x2 - 6 * x1 + 3 * x0,
 309              C = 3 * x1 - 3 * x0,
 310              D = x0,
 311              E = y3 - 3 * y2 + 3 * y1 - y0,
 312              F = 3 * y2 - 6 * y1 + 3 * y0,
 313              G = 3 * y1 - 3 * y0,
 314              H = y0,
 315  
 316              x = (((A*t) + B)*t + C)*t + D,
 317              y = (((E*t) + F)*t + G)*t + H;
 318  
 319          return [x, y];
 320      },
 321  
 322      easings: {
 323          ease: [0.25, 0, 1, 0.25],
 324          linear: [0, 0, 1, 1],
 325          'ease-in': [0.42, 0, 1, 1],
 326          'ease-out': [0, 0, 0.58, 1],
 327          'ease-in-out': [0.42, 0, 0.58, 1]
 328      },
 329  
 330      _running: {},
 331      _timer: null,
 332  
 333      RE_UNITS: /^(-?\d*\.?\d*){1}(em|ex|px|in|cm|mm|pt|pc|%)*$/
 334  }, true);
 335  
 336  Transition.behaviors.top = Transition.behaviors.bottom = Transition.behaviors.right = Transition.behaviors.left;
 337  
 338  Y.Transition = Transition;
 339  
 340  
 341  }, '3.17.2', {"requires": ["transition"]});