transition-native-debug.js revision 576e5aadaa60b824ce0a3875d3551ca3151a1957
YUI.add('transition-native', function(Y) {
/**
* The Native Transition Utility provides an API wrapper for CSS transitions.
* It is also the base module for the timer-based transition module.
* @module node
*/
/**
* Provides the base Transition class.
*
* @module node
* @submodule transition-native
*/
/**
* A class for constructing transition instances.
* @class Transition
* @for Transition
* @constructor
* @extends Base
*/
var TRANSITION = '-webkit-transition',
TRANSITION_CAMEL = 'WebkitTransition',
TRANSITION_PROPERTY = '-webkit-transition-property',
TRANSITION_DURATION = '-webkit-transition-duration',
TRANSITION_TIMING_FUNCTION = '-webkit-transition-timing-function',
TRANSITION_DELAY = '-webkit-transition-delay',
TRANSITION_END = 'webkitTransitionEnd',
Transition = function() {
this.init.apply(this, arguments);
};
Transition._reKeywords = /^(?:node|duration|iterations|easing|delay)$/;
Transition.useNative = false;
if (TRANSITION in Y.config.doc.documentElement.style) {
Transition.useNative = true;
Transition.supported = true; // TODO: remove
}
Y.Node.DOM_EVENTS[TRANSITION_END] = 1;
Transition.NAME = 'transition';
Transition.DEFAULT_EASING = 'ease-in-out';
Transition.DEFAULT_DURATION = 0.5;
Transition.DEFAULT_DELAY = 0;
Transition._nodeAttrs = {};
Transition._count = 0;
Transition.prototype = {
constructor: Transition,
init: function(node, config) {
var anim = this;
if (!anim._running) {
anim._node = node;
anim._config = config;
node._transition = anim; // cache for reuse
anim._duration = ('duration' in config) ?
config.duration: anim.constructor.DEFAULT_DURATION;
anim._delay = ('delay' in config) ?
config.delay: anim.constructor.DEFAULT_DELAY;
anim._easing = config.easing || anim.constructor.DEFAULT_EASING;
anim._count = 0; // track number of animated properties
anim._running = false;
anim.initAttrs(config);
}
return anim;
},
initAttrs: function(config) {
var anim = this,
node = anim._node,
uid = Y.stamp(node),
attrs = Transition._nodeAttrs[uid],
duration,
delay,
easing,
val,
transition,
attr;
if (!attrs) {
attrs = Transition._nodeAttrs[uid] = {};
}
if (config.transform && !config['-webkit-transform']) {
config['-webkit-transform'] = config.transform;
delete config.transform; // TODO: copy
}
for (attr in config) {
if (config.hasOwnProperty(attr) && !Transition._reKeywords.test(attr)) {
val = transition = config[attr];
if (attrs[attr] && attrs[attr].transition) {
attrs[attr].transition._count--; // remapping attr to this transition
} else {
Transition._count += 1;
}
if (typeof transition.value !== 'undefined') {
val = transition.value;
}
if (typeof val === 'function') {
val = val.call(node, node);
}
duration = (typeof transition.duration !== 'undefined') ? transition.duration :
anim._duration;
delay = (typeof transition.delay !== 'undefined') ? transition.delay :
anim._delay;
if (!duration) { // make async and fire events
duration = 0.00001;
}
easing = transition.easing || anim._easing;
anim._count++; // track number of bound properties
attrs[attr] = {
value: val,
duration: duration,
delay: delay,
easing: easing,
transition: anim
};
}
}
},
/**
* Starts or an animation.
* @method run
* @chainable
*/
run: function(callback) {
var anim = this;
if (!anim._running) {
anim._running = true;
anim._node.fire('transition:start', {
type: 'transition:start',
config: anim._config
});
anim._start();
anim._callback = callback;
}
return anim;
},
_start: function() {
this._runNative();
},
_prepDur: function(dur) {
dur = parseFloat(dur);
return dur + 's';
},
_runNative: function(time) {
var anim = this,
node = anim._node,
uid = Y.stamp(node),
domNode = node._node,
style = domNode.style,
computed = getComputedStyle(domNode),
attrs = Transition._nodeAttrs[uid],
cssText = '',
cssTransition = computed[TRANSITION_PROPERTY],
transitionText = TRANSITION_PROPERTY + ': ',
duration = TRANSITION_DURATION + ': ',
easing = TRANSITION_TIMING_FUNCTION + ': ',
delay = TRANSITION_DELAY + ': ',
attr,
name;
// preserve existing transitions
if (cssTransition !== 'all') {
transitionText += cssTransition + ',';
duration += computed[TRANSITION_DURATION] + ',';
easing += computed[TRANSITION_TIMING_FUNCTION] + ',';
delay += computed[TRANSITION_DELAY] + ',';
}
// run transitions mapped to this instance
for (name in attrs) {
attr = attrs[name];
if (attrs.hasOwnProperty(name) && attr.transition === anim) {
duration += anim._prepDur(attr.duration) + ',';
delay += anim._prepDur(attr.delay) + ',';
easing += (attr.easing) + ',';
transitionText += name + ',';
cssText += name + ': ' + attr.value + '; ';
}
}
transitionText = transitionText.replace(/,$/, ';');
duration = duration.replace(/,$/, ';');
easing = easing.replace(/,$/, ';');
delay = delay.replace(/,$/, ';');
// only one native end event per node
if (!node._hasTransitionEnd) {
node.on(TRANSITION_END, anim._onNativeEnd);
node._hasTransitionEnd = true;
}
style.cssText += transitionText + duration + easing + delay + cssText;
},
_end: function(elapsed) {
var anim = this,
node = anim._node,
callback = anim._callback,
data = {
type: 'transition:end',
config: anim._config,
elapsedTime: elapsed
};
anim._running = false;
if (callback) {
anim._callback = null;
setTimeout(function() { // IE: allow previous update to finish
callback.call(node, data);
}, 1);
}
node.fire('transition:end', data);
},
_endNative: function() {
var node = this._node;
if (Transition._count <= 0) {
node._node.style[TRANSITION_CAMEL] = '';
}
},
_onNativeEnd: function(e) {
var node = this,
uid = Y.stamp(node),
event = e._event,
name = event.propertyName,
elapsed = event.elapsedTime,
attrs = Transition._nodeAttrs[uid],
attr = attrs[name],
anim = (attr) ? attr.transition :null,
callback;
if (anim) {
callback = anim._callback;
anim._count--;
delete attrs[name];
Transition._count--;
node.fire('transition:propertyEnd', {
type: 'propertyEnd',
propertyName: name,
elapsedTime: elapsed
});
if (anim._count <= 0) {
anim._endNative();
anim._end(elapsed);
}
}
},
destroy: function() {
this.detachAll();
this._node = null;
}
};
Y.Transition = Transition;
Y.TransitionNative = Transition; // TODO: remove
/**
Animate one or more css properties to a given value.
<pre>example usage:
Y.one('#demo').transition({
duration: 1, // seconds
easing: 'ease-out',
height: '10px',
width: '10px',
opacity: { // per property duration and/or easing
value: 0,
duration: 2,
easing: 'ease-in'
}
});
</pre>
@for node
@method transition
@param {Object} An object containing one or more style properties, a duration and an easing.
@chainable
*/
Y.Node.prototype.transition = function(config, callback) {
var anim = this._transition;
if (anim && !anim._running) {
anim.init(this, config);
} else {
anim = new Transition(this, config);
}
anim.run(callback);
return this;
};
}, '@VERSION@' ,{requires:['node-base']});