build/transition/transition-timer.js

	transition-timer.js revision b8e54cd0fdbfd4d5482a6c38e53b0d42e2e2baff
0b062f4990db5cc6db2fe3398926f71b92a67407Brian WellingtonYUI.add('transition-timer', function(Y) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
75c0816e8295e180f4bc7f10db3d0d880383bc1cMark Andrews/**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein* The Transition Utility provides an API for creating advanced transitions.
0b062f4990db5cc6db2fe3398926f71b92a67407Brian Wellington* @module node
0b062f4990db5cc6db2fe3398926f71b92a67407Brian Wellington*/
0b062f4990db5cc6db2fe3398926f71b92a67407Brian Wellington
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein/**
9016767f4e15191b7c763b8a4ad36a57dc2705a2Mark Andrews* Provides the base Transition class, for animating numeric properties.
9016767f4e15191b7c763b8a4ad36a57dc2705a2Mark Andrews*
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein* @module node
9016767f4e15191b7c763b8a4ad36a57dc2705a2Mark Andrews* @submodule transition
9016767f4e15191b7c763b8a4ad36a57dc2705a2Mark Andrews*/
9016767f4e15191b7c763b8a4ad36a57dc2705a2Mark Andrews
9016767f4e15191b7c763b8a4ad36a57dc2705a2Mark Andrews/**
0b062f4990db5cc6db2fe3398926f71b92a67407Brian Wellington * A class for constructing animation instances.
e21a2904f02a03fa06b6db04d348f65fe9c67b2bMark Andrews * @class Transition
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein * @for Transition
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein * @constructor
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
e21a2904f02a03fa06b6db04d348f65fe9c67b2bMark Andrewsvar PROPERTY_END = 'transition:propertyEnd',
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    Transition = Y.Transition;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark AndrewsY.mix(Transition.prototype, {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    _start: function() {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        if (Transition.useNative) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            this._runNative();
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        } else {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            this._runTimer();
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    _runTimer: function() {
e21a2904f02a03fa06b6db04d348f65fe9c67b2bMark Andrews        var anim = this;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        anim._initAttrs();
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        Transition._running[Y.stamp(anim)] = anim;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        anim._startTime = new Date();
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        Transition._startTimer();
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
e21a2904f02a03fa06b6db04d348f65fe9c67b2bMark Andrews    _end: function() {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        delete Transition._running[Y.stamp(this)];
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        this._running = false;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        this._startTime = null;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    _runFrame: function() {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        var t = new Date() - this._startTime;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        this._runAttrs(t);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    _runAttrs: function(time) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        var anim = this,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            node = anim._node,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            uid = Y.stamp(node),
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            attrs = Transition._nodeAttrs[uid],
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            customAttr = Transition.behaviors,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            done = false,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            allDone = false,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            callback = anim._callback,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            name,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            attribute,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            setter,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            elapsed,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            delay,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            d,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            t,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            i;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        for (name in attrs) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            attribute = attrs[name];
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            if ((attribute && attribute.transition === anim)) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                d = attribute.duration;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                delay = attribute.delay;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                elapsed = time / 1000;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                t = time;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                setter = (i in customAttr && 'set' in customAttr[i]) ?
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                        customAttr[i].set : Transition.DEFAULT_SETTER;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                done = (t >= d);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (t > d) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    t = d;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (!delay || time >= delay) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    setter(anim, name, attribute.from, attribute.to, t - delay, d - delay,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                        attribute.easing, attribute.unit);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    if (done) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                        delete attrs[name];
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                        anim._count--;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                        if (!allDone && anim._count <= 0) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                            allDone = true;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                            anim._end();
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                            if (callback) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                                anim._callback = null;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                                callback.call(node, {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                                    elapsedTime: (time - delay) / 1000
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                                });
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                        }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    _initAttrs: function() {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        var anim = this,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            customAttr = Transition.behaviors,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            uid = Y.stamp(this._node),
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            attrs = Transition._nodeAttrs[uid],
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            attribute,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            duration,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            delay,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            easing,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            val,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            name,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            unit, begin, end;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        for (name in attrs) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            attribute = attrs[name];
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            if (attrs.hasOwnProperty(name) && (attribute && attribute.transition === anim)) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                duration = attribute.duration * 1000;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                delay = attribute.delay * 1000;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                easing = attribute.easing;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                val = attribute.value;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                begin = (name in customAttr && 'get' in customAttr[name])  ?
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                        customAttr[name].get(anim, name) : Transition.DEFAULT_GETTER(anim, name);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                var mFrom = Transition.RE_UNITS.exec(begin);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                var mTo = Transition.RE_UNITS.exec(val);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                begin = mFrom ? mFrom[1] : begin;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                end = mTo ? mTo[1] : val;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                unit = mTo ? mTo[2] : mFrom ?  mFrom[2] : ''; // one might be zero TODO: mixed units
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (!unit && Transition.RE_DEFAULT_UNIT.test(name)) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    unit = Transition.DEFAULT_UNIT;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (!begin || !end) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    return;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                }
e21a2904f02a03fa06b6db04d348f65fe9c67b2bMark Andrews
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                if (typeof easing === 'string') {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    if (easing.indexOf('cubic-bezier') > -1) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                        easing = easing.substring(13, easing.length - 1).split(',');
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                    } else if (Transition.easings[easing]) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                        easing = Transition.easings[easing];
90153b6536f7a5078e1c157c980110dbcd7fe205Mark Andrews                    }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                attribute.from = begin;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                attribute.to = end;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                attribute.unit = unit;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                attribute.easing = easing;
8ffa8320abcc17ae593af566cb946a58fe293860Brian Wellington                attribute.duration = duration;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                attribute.delay = delay;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    destroy: function() {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        this.detachAll();
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        this._node = null;
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein}, true);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob AusteinY.mix(Y.Transition, {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    _runtimeAttrs: {},
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    /**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * Regex of properties that should use the default unit.
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     *
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @property RE_DEFAULT_UNIT
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @static
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    RE_DEFAULT_UNIT: /^width|height|top|right|bottom|left|margin.*|padding.*|border.*$/i,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    /**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * The default unit to use with properties that pass the RE_DEFAULT_UNIT test.
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     *
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @property DEFAULT_UNIT
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @static
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    DEFAULT_UNIT: 'px',
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    /**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * Time in milliseconds passed to setInterval for frame processing
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     *
e21a2904f02a03fa06b6db04d348f65fe9c67b2bMark Andrews     * @property intervalTime
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @default 20
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @static
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    intervalTime: 20,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    /**
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * Bucket for custom getters and setters
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     *
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @property behaviors
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @static
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    behaviors: {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        left: {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            get: function(anim, attr) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein                return Y.DOM._getAttrOffset(anim._node._node, attr);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        }
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    },
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    /**
e21a2904f02a03fa06b6db04d348f65fe9c67b2bMark Andrews     * The default setter to use when setting object properties.
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     *
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @property DEFAULT_SETTER
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     * @static
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein     */
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein    DEFAULT_SETTER: function(anim, att, from, to, elapsed, duration, fn, unit) {
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        from = Number(from);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        to = Number(to);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
e21a2904f02a03fa06b6db04d348f65fe9c67b2bMark Andrews        var node = anim._node,
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein            val = Transition.cubicBezier(fn, elapsed / duration);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        val = from + val[0] * (to - from);
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein
60e5e10f8d2e2b0c41e8abad38cacd867caa6ab2Rob Austein        if (att in node._node.style || att in Y.DOM.CUSTOM_STYLES) {
            unit = unit || '';
            node.setStyle(att, val + unit);
        } else if (node._node.attributes[att]) {
            node.setAttribute(att, val);
        } else {
            node.set(att, val);
        }
    },

    /**
     * The default getter to use when getting object properties.
     *
     * @property DEFAULT_GETTER
     * @static
     */
    DEFAULT_GETTER: function(anim, att) {
        var node = anim._node,
            val = '';

        if (att in node._node.style || att in Y.DOM.CUSTOM_STYLES) {
            val = node.getComputedStyle(att);
        } else if (node._node.attributes[att]) {
            val = node.getAttribute(att);
        } else {
            val = node.get(att);
        }

        return val;
    },

    _startTimer: function() {
        if (!Transition._timer) {
            Transition._timer = setInterval(Transition._runFrame, Transition.intervalTime);
        }
    },

    _stopTimer: function() {
        clearInterval(Transition._timer);
        Transition._timer = null;
    },

    /**
     * Called per Interval to handle each animation frame.
     * @method _runFrame
     * @private
     * @static
     */
    _runFrame: function() {
        var done = true,
            anim;
        for (anim in Transition._running) {
            if (Transition._running[anim]._runFrame) {
                done = false;
                Transition._running[anim]._runFrame();
            }
        }

        if (done) {
            Transition._stopTimer();
        }
    },

    cubicBezier: function(p, t) {
        var x0 = 0,
            y0 = 0,
            x1 = p[0],
            y1 = p[1],
            x2 = p[2],
            y2 = p[3],
            x3 = 1,
            y3 = 0,

            A = x3 - 3 * x2 + 3 * x1 - x0,
            B = 3 * x2 - 6 * x1 + 3 * x0,
            C = 3 * x1 - 3 * x0,
            D = x0,
            E = y3 - 3 * y2 + 3 * y1 - y0,
            F = 3 * y2 - 6 * y1 + 3 * y0,
            G = 3 * y1 - 3 * y0,
            H = y0,

            x = (((A*t) + B)*t + C)*t + D,
            y = (((E*t) + F)*t + G)*t + H;

        return [x, y];
    },

    easings: {
        ease: [0.25, 0, 1, 0.25],
        linear: [0, 0, 1, 1],
        'ease-in': [0.42, 0, 1, 1],
        'ease-out': [0, 0, 0.58, 1],
        'ease-in-out': [0.42, 0, 0.58, 1]
    },

    _running: {},
    _timer: null,

    RE_UNITS: /^(-?\d*\.?\d*){1}(em|ex|px|in|cm|mm|pt|pc|%)*$/
}, true);

Transition.behaviors.top = Transition.behaviors.bottom = Transition.behaviors.right = Transition.behaviors.left;

Y.Transition = Transition;


}, '@VERSION@' ,{requires:['transition-native', 'node-style']});