4 var webkitStyles = '-webkit-transition' in document.documentElement.style
5 var TRANSITION_CSSNAME = webkitStyles ? '-webkit-transition' : 'transition';
6 var TRANSFORM_CSSNAME = webkitStyles ? '-webkit-transform' : 'transform';
7 var TRANSITION_NAME = webkitStyles ? 'webkitTransition' : 'transition';
8 var TRANSFORM_NAME = webkitStyles ? 'webkitTransform' : 'transform';
10 var hasShadowDOMPolyfill = window.ShadowDOMPolyfill;
12 Polymer('hero-transition',{
14 go: function(scope, options) {
22 var duration = options && options.duration ||
23 (CoreStyle.g.transitions.heroDuration ||
24 CoreStyle.g.transitions.duration);
26 scope._heroes.forEach(function(h) {
27 var d = h.h0.hasAttribute('hero-delayed') ? CoreStyle.g.transitions.heroDelay : '';
29 props.forEach(function(p) {
30 wt.push(p + ' ' + duration + ' ' + options.easing + ' ' + d);
33 h.h1.style[TRANSITION_NAME] = wt.join(', ');
34 h.h1.style.borderRadius = h.r1;
35 h.h1.style[TRANSFORM_NAME] = 'none';
38 this.super(arguments);
40 if (!scope._heroes.length) {
41 this.completed = true;
45 prepare: function(scope, options) {
46 this.super(arguments);
47 var src = options.src, dst = options.dst;
49 if (scope._heroes && scope._heroes.length) {
50 this.ensureComplete(scope);
55 // FIXME(yvonne): basic support for nested pages.
56 // Look for heroes in the light DOM and one level of shadow DOM of the src and dst,
57 // and also in src.selectedItem or dst.selectedItem, then transform the dst hero to src
59 var h$ = this.findAllInShadows(src, ss);
60 if (src.selectedItem) {
61 hs$ = this.findAllInShadows(src.selectedItem, ss);
64 Array.prototype.forEach.call(hs$, function(hs) {
65 if (h$.indexOf(hs) === -1) {
72 for (var i=0, h0; h0=h$[i]; i++) {
73 var v = h0.getAttribute('hero-id');
74 var ds = '[hero][hero-id="' + v + '"]';
75 var h1 = this.findInShadows(dst, ds);
77 if (!h1 && dst.selectedItem) {
78 h1 = this.findInShadows(dst.selectedItem, ds);
81 // console.log('src', src);
82 // console.log('dst', dst, dst.selectedItem);
83 // console.log(v, h0, h1);
85 var c0 = getComputedStyle(h0);
86 var c1 = getComputedStyle(h1);
89 b0: h0.getBoundingClientRect(),
92 b1: h1.getBoundingClientRect(),
96 var dl = h.b0.left - h.b1.left;
97 var dt = h.b0.top - h.b1.top;
98 var sw = h.b0.width / h.b1.width;
99 var sh = h.b0.height / h.b1.height;
101 // h.scaley = h.h0.hasAttribute('scaley');
102 // if (!h.scaley && (sw !== 1 || sh !== 1)) {
104 // h.h1.style.width = h.b0.width + 'px';
105 // h.h1.style.height = h.b0.height + 'px';
108 // Also animate the border-radius for the circle-to-square transition
110 h.h1.style.borderRadius = h.r0;
115 h.h1.style[TRANSFORM_NAME] = 'translate(' + dl + 'px,' + dt + 'px)' + ' scale(' + sw + ',' + sh + ')';
116 h.h1.style[TRANSFORM_NAME + 'Origin'] = '0 0';
118 scope._heroes.push(h);
124 // carefully look into ::shadow with polyfill specific hack
125 findInShadows: function(node, selector) {
126 return node.querySelector(selector) || (hasShadowDOMPolyfill ?
127 Platform.queryAllShadows(node, selector) :
128 node.querySelector('::shadow ' + selector));
131 findAllInShadows: function(node, selector) {
132 if (hasShadowDOMPolyfill) {
133 var nodes = node.querySelectorAll(selector).array();
134 var shadowNodes = Platform.queryAllShadows(node, selector, true);
135 return nodes.concat(shadowNodes);
137 return node.querySelectorAll(selector).array().concat(node.shadowRoot ? node.shadowRoot.querySelectorAll(selector).array() : []);
141 ensureComplete: function(scope) {
142 this.super(arguments);
144 scope._heroes.forEach(function(h) {
145 h.h1.style[TRANSITION_NAME] = null;
146 h.h1.style[TRANSFORM_NAME] = null;
152 complete: function(scope, e) {
153 // if (e.propertyName === TRANSFORM_CSSNAME) {
155 scope._heroes.forEach(function(h) {
156 if (h.h1 === e.path[0]) {
162 this.super(arguments);