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Copyright 2012 Yahoo! Inc. All rights reserved.
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Licensed under the BSD License.
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http://yuilibrary.com/license/
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YUI.add('transition', function(Y) {
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* Provides the transition method for Node.
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* Transition has no API of its own, but adds the transition method to Node.
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* @requires node-style
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var CAMEL_VENDOR_PREFIX = '',
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DOCUMENT = Y.config.doc,
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DOCUMENT_ELEMENT = 'documentElement',
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TRANSITION = 'transition',
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TRANSITION_CAMEL = 'Transition',
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TRANSITION_PROPERTY_CAMEL,
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TRANSITION_TIMING_FUNCTION,
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VENDOR_TRANSITION_END = {
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Webkit: 'webkitTransitionEnd'
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* A class for constructing transition instances.
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* Adds the "transition" method to Node.
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Transition = function() {
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this.init.apply(this, arguments);
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Transition._toCamel = function(property) {
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property = property.replace(/-([a-z])/gi, function(m0, m1) {
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return m1.toUpperCase();
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Transition._toHyphen = function(property) {
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property = property.replace(/([A-Z]?)([a-z]+)([A-Z]?)/g, function(m0, m1, m2, m3) {
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var str = ((m1) ? '-' + m1.toLowerCase() : '') + m2;
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str += '-' + m3.toLowerCase();
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Transition.SHOW_TRANSITION = 'fadeIn';
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Transition.HIDE_TRANSITION = 'fadeOut';
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Transition.useNative = false;
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Y.Array.each(VENDORS, function(val) { // then vendor specific
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var property = val + TRANSITION_CAMEL;
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if (property in DOCUMENT[DOCUMENT_ELEMENT].style) {
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CAMEL_VENDOR_PREFIX = val;
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VENDOR_PREFIX = Transition._toHyphen(val) + '-';
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Transition.useNative = true;
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Transition.supported = true; // TODO: remove
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Transition._VENDOR_PREFIX = val;
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TRANSITION_CAMEL = CAMEL_VENDOR_PREFIX + TRANSITION_CAMEL;
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TRANSITION_PROPERTY_CAMEL = CAMEL_VENDOR_PREFIX + 'TransitionProperty';
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TRANSITION_PROPERTY = VENDOR_PREFIX + 'transition-property';
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TRANSITION_DURATION = VENDOR_PREFIX + 'transition-duration';
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TRANSITION_TIMING_FUNCTION = VENDOR_PREFIX + 'transition-timing-function';
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TRANSITION_DELAY = VENDOR_PREFIX + 'transition-delay';
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TRANSITION_END = 'transitionend';
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ON_TRANSITION_END = 'on' + CAMEL_VENDOR_PREFIX.toLowerCase() + 'transitionend';
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TRANSITION_END = VENDOR_TRANSITION_END[CAMEL_VENDOR_PREFIX] || TRANSITION_END;
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TRANSFORM_CAMEL = CAMEL_VENDOR_PREFIX + 'Transform';
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Transition.toggles = {};
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Transition._hasEnd = {};
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Transition._reKeywords = /^(?:node|duration|iterations|easing|delay|on|onstart|onend)$/i;
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Y.Node.DOM_EVENTS[TRANSITION_END] = 1;
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Transition.NAME = 'transition';
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Transition.DEFAULT_EASING = 'ease';
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Transition.DEFAULT_DURATION = 0.5;
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Transition.DEFAULT_DELAY = 0;
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Transition._nodeAttrs = {};
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Transition.prototype = {
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constructor: Transition,
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init: function(node, config) {
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if (!anim._running && config) {
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anim._config = config;
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node._transition = anim; // cache for reuse
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anim._duration = ('duration' in config) ?
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config.duration: anim.constructor.DEFAULT_DURATION;
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anim._delay = ('delay' in config) ?
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config.delay: anim.constructor.DEFAULT_DELAY;
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anim._easing = config.easing || anim.constructor.DEFAULT_EASING;
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anim._count = 0; // track number of animated properties
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anim._running = false;
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addProperty: function(prop, config) {
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nodeInstance = Y.one(node),
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attrs = Transition._nodeAttrs[uid],
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attrs = Transition._nodeAttrs[uid] = {};
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// might just be a value
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if (config && config.value !== undefined) {
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} else if (config !== undefined) {
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if (typeof val === 'function') {
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val = val.call(nodeInstance, nodeInstance);
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if (attr && attr.transition) {
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// take control if another transition owns this property
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if (attr.transition !== anim) {
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attr.transition._count--; // remapping attr to this transition
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anim._count++; // properties per transition
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// make 0 async and fire events
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dur = ((typeof config.duration != 'undefined') ? config.duration :
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anim._duration) || 0.0001;
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delay: (typeof config.delay != 'undefined') ? config.delay :
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easing: config.easing || anim._easing,
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// native end event doesnt fire when setting to same value
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// supplementing with timer
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// val may be a string or number (height: 0, etc), but computedStyle is always string
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computed = Y.DOM.getComputedStyle(node, prop);
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compareVal = (typeof val === 'string') ? computed : parseFloat(computed);
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if (Transition.useNative && compareVal === val) {
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setTimeout(function() {
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anim._onNativeEnd.call(node, {
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removeProperty: function(prop) {
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attrs = Transition._nodeAttrs[Y.stamp(anim._node)];
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if (attrs && attrs[prop]) {
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initAttrs: function(config) {
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if (config.transform && !config[TRANSFORM_CAMEL]) {
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config[TRANSFORM_CAMEL] = config.transform;
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delete config.transform; // TODO: copy
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for (attr in config) {
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if (config.hasOwnProperty(attr) && !Transition._reKeywords.test(attr)) {
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this.addProperty(attr, config[attr]);
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// when size is auto or % webkit starts from zero instead of computed
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// (https://bugs.webkit.org/show_bug.cgi?id=16020)
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// TODO: selective set
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if (node.style[attr] === '') {
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Y.DOM.setStyle(node, attr, Y.DOM.getComputedStyle(node, attr));
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* Starts or an animation.
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run: function(callback) {
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config = anim._config,
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type: 'transition:start',
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if (!anim._running) {
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anim._running = true;
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if (config.on && config.on.start) {
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config.on.start.call(Y.one(node), data);
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anim.initAttrs(anim._config);
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anim._callback = callback;
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_prepDur: function(dur) {
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dur = parseFloat(dur);
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_runNative: function(time) {
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computed = node.ownerDocument.defaultView.getComputedStyle(node),
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attrs = Transition._nodeAttrs[uid],
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cssTransition = computed[Transition._toCamel(TRANSITION_PROPERTY)],
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transitionText = TRANSITION_PROPERTY + ': ',
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duration = TRANSITION_DURATION + ': ',
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easing = TRANSITION_TIMING_FUNCTION + ': ',
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delay = TRANSITION_DELAY + ': ',
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// preserve existing transitions
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if (cssTransition !== 'all') {
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transitionText += cssTransition + ',';
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duration += computed[Transition._toCamel(TRANSITION_DURATION)] + ',';
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easing += computed[Transition._toCamel(TRANSITION_TIMING_FUNCTION)] + ',';
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delay += computed[Transition._toCamel(TRANSITION_DELAY)] + ',';
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// run transitions mapped to this instance
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for (name in attrs) {
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hyphy = Transition._toHyphen(name);
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if ((attr = attrs[name]) && attr.transition === anim) {
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if (name in node.style) { // only native styles allowed
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duration += anim._prepDur(attr.duration) + ',';
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delay += anim._prepDur(attr.delay) + ',';
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easing += (attr.easing) + ',';
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transitionText += hyphy + ',';
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cssText += hyphy + ': ' + attr.value + '; ';
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this.removeProperty(name);
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transitionText = transitionText.replace(/,$/, ';');
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duration = duration.replace(/,$/, ';');
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easing = easing.replace(/,$/, ';');
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delay = delay.replace(/,$/, ';');
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// only one native end event per node
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if (!Transition._hasEnd[uid]) {
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node.addEventListener(TRANSITION_END, anim._onNativeEnd, '');
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Transition._hasEnd[uid] = true;
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style.cssText += transitionText + duration + easing + delay + cssText;
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_end: function(elapsed) {
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callback = anim._callback,
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config = anim._config,
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type: 'transition:end',
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nodeInstance = Y.one(node);
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anim._running = false;
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anim._callback = null;
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if (config.on && config.on.end) {
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setTimeout(function() { // IE: allow previous update to finish
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config.on.end.call(nodeInstance, data);
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// nested to ensure proper fire order
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callback.call(nodeInstance, data);
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} else if (callback) {
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setTimeout(function() { // IE: allow previous update to finish
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callback.call(nodeInstance, data);
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_endNative: function(name) {
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var node = this._node,
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value = node.ownerDocument.defaultView.getComputedStyle(node, '')[Transition._toCamel(TRANSITION_PROPERTY)];
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name = Transition._toHyphen(name);
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if (typeof value === 'string') {
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value = value.replace(new RegExp('(?:^|,\\s)' + name + ',?'), ',');
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value = value.replace(/^,|,$/, '');
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node.style[TRANSITION_CAMEL] = value;
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_onNativeEnd: function(e) {
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event = e,//e._event,
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name = Transition._toCamel(event.propertyName),
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elapsed = event.elapsedTime,
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attrs = Transition._nodeAttrs[uid],
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anim = (attr) ? attr.transition : null,
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anim.removeProperty(name);
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anim._endNative(name);
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config = anim._config[name];
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elapsedTime: elapsed,
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if (config && config.on && config.on.end) {
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config.on.end.call(Y.one(node), data);
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if (anim._count <= 0) { // after propertyEnd fires
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node.style[TRANSITION_PROPERTY_CAMEL] = ''; // clean up style
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destroy: function() {
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node.removeEventListener(TRANSITION_END, anim._onNativeEnd, false);
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Y.Transition = Transition;
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Y.TransitionNative = Transition; // TODO: remove
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* Animate one or more css properties to a given value. Requires the "transition" module.
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* <pre>example usage:
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* Y.one('#demo').transition({
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* duration: 1, // in seconds, default is 0.5
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* easing: 'ease-out', // default is 'ease'
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* delay: '1', // delay start for 1 second, default is 0
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* opacity: { // per property
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* @param {Object} config An object containing one or more style properties, a duration and an easing.
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* @param {Function} callback A function to run after the transition has completed.
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Y.Node.prototype.transition = function(name, config, callback) {
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transitionAttrs = Transition._nodeAttrs[Y.stamp(this._node)],
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anim = (transitionAttrs) ? transitionAttrs.transition || null : null,
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if (typeof name === 'string') { // named effect, pull config from registry
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if (typeof config === 'function') {
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fxConfig = Transition.fx[name];
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if (config && typeof config !== 'boolean') {
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config = Y.clone(config);
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for (prop in fxConfig) {
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if (fxConfig.hasOwnProperty(prop)) {
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if (! (prop in config)) {
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config[prop] = fxConfig[prop];
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} else { // name is a config, config is a callback or undefined
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if (anim && !anim._running) {
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anim.init(this, config);
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anim = new Transition(this._node, config);
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Y.Node.prototype.show = function(name, config, callback) {
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this._show(); // show prior to transition
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if (name && Y.Transition) {
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if (typeof name !== 'string' && !name.push) { // named effect or array of effects supercedes default
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if (typeof config === 'function') {
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name = Transition.SHOW_TRANSITION;
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this.transition(name, config, callback);
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else if (name && !Y.Transition) { Y.log('unable to transition show; missing transition module', 'warn', 'node'); }
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var _wrapCallBack = function(anim, fn, callback) {
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callback.apply(anim._node, arguments);
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Y.Node.prototype.hide = function(name, config, callback) {
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if (name && Y.Transition) {
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if (typeof config === 'function') {
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callback = _wrapCallBack(this, this._hide, callback); // wrap with existing callback
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if (typeof name !== 'string' && !name.push) { // named effect or array of effects supercedes default
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if (typeof config === 'function') {
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name = Transition.HIDE_TRANSITION;
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this.transition(name, config, callback);
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} else if (name && !Y.Transition) { Y.log('unable to transition hide; missing transition module', 'warn', 'node');
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* Animate one or more css properties to a given value. Requires the "transition" module.
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* <pre>example usage:
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* Y.all('.demo').transition({
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* duration: 1, // in seconds, default is 0.5
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* easing: 'ease-out', // default is 'ease'
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* delay: '1', // delay start for 1 second, default is 0
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* opacity: { // per property
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* @param {Object} config An object containing one or more style properties, a duration and an easing.
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* @param {Function} callback A function to run after the transition has completed. The callback fires
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* once per item in the NodeList.
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Y.NodeList.prototype.transition = function(config, callback) {
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var nodes = this._nodes,
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while ((node = nodes[i++])) {
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Y.one(node).transition(config, callback);
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Y.Node.prototype.toggleView = function(name, on, callback) {
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this._toggles = this._toggles || [];
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callback = arguments[arguments.length - 1];
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if (typeof name == 'boolean') { // no transition, just toggle
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name = name || Y.Transition.DEFAULT_TOGGLE;
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if (typeof on == 'undefined' && name in this._toggles) { // reverse current toggle
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on = ! this._toggles[name];
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callback = _wrapCallBack(this, this._hide, callback);
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this._toggles[name] = on;
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this.transition(Y.Transition.toggles[name][on], callback);
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Y.NodeList.prototype.toggleView = function(name, on, callback) {
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var nodes = this._nodes,
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while ((node = nodes[i++])) {
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Y.one(node).toggleView(name, on, callback);
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Y.mix(Transition.fx, {
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height: function(node) {
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return node.get('scrollHeight') + 'px';
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width: function(node) {
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return node.get('scrollWidth') + 'px';
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var overflow = this.getStyle('overflow');
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if (overflow !== 'hidden') { // enable scrollHeight/Width
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this.setStyle('overflow', 'hidden');
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this._transitionOverflow = overflow;
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if (this._transitionOverflow) { // revert overridden value
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this.setStyle('overflow', this._transitionOverflow);
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delete this._transitionOverflow;
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Y.mix(Transition.toggles, {
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size: ['sizeOut', 'sizeIn'],
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fade: ['fadeOut', 'fadeIn']
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Transition.DEFAULT_TOGGLE = 'fade';
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}, '3.5.1' ,{requires:['node-style']});