Inline scripts were extracted from Polymer elements.

third_party/polymer/components-chromium/core-animated-pages/transitions/hero-transition-extracted.js

+
+(function() {
+
+  var webkitStyles = '-webkit-transition' in document.documentElement.style
+  var TRANSITION_CSSNAME = webkitStyles ? '-webkit-transition' : 'transition';
+  var TRANSFORM_CSSNAME = webkitStyles ? '-webkit-transform' : 'transform';
+  var TRANSITION_NAME = webkitStyles ? 'webkitTransition' : 'transition';
+  var TRANSFORM_NAME = webkitStyles ? 'webkitTransform' : 'transform';
+
+  var hasShadowDOMPolyfill = window.ShadowDOMPolyfill;
+
+  Polymer('hero-transition',{
+
+    go: function(scope, options) {
+      var props = [
+        'border-radius',
+        'width',
+        'height',
+        TRANSFORM_CSSNAME
+      ];
+
+      var duration = options && options.duration || 
+          (CoreStyle.g.transitions.heroDuration || 
+          CoreStyle.g.transitions.duration);
+
+      scope._heroes.forEach(function(h) {
+        var d = h.h0.hasAttribute('hero-delayed') ? CoreStyle.g.transitions.heroDelay : '';
+        var wt = [];
+        props.forEach(function(p) {
+          wt.push(p + ' ' + duration + ' ' + options.easing + ' ' + d);
+        });
+
+        h.h1.style[TRANSITION_NAME] = wt.join(', ');
+        h.h1.style.borderRadius = h.r1;
+        h.h1.style[TRANSFORM_NAME] = 'none';
+      });
+
+      this.super(arguments);
+
+      if (!scope._heroes.length) {
+        this.completed = true;
+      }
+    },
+
+    prepare: function(scope, options) {
+      this.super(arguments);
+      var src = options.src, dst = options.dst;
+
+      if (scope._heroes && scope._heroes.length) {
+        this.ensureComplete(scope);
+      } else {
+        scope._heroes = [];
+      }
+
+      // FIXME(yvonne): basic support for nested pages.
+      // Look for heroes in the light DOM and one level of shadow DOM of the src and dst,
+      // and also in src.selectedItem or dst.selectedItem, then transform the dst hero to src
+      var ss = '[hero]';
+      var h$ = this.findAllInShadows(src, ss);
+      if (src.selectedItem) {
+        hs$ = this.findAllInShadows(src.selectedItem, ss);
+        hsa$ = [];
+        // De-duplicate items
+        Array.prototype.forEach.call(hs$, function(hs) {
+          if (h$.indexOf(hs) === -1) {
+            hsa$.push(hs);
+          }
+        })
+        h$ = h$.concat(hsa$);
+      }
+
+      for (var i=0, h0; h0=h$[i]; i++) {
+        var v = h0.getAttribute('hero-id');
+        var ds = '[hero][hero-id="' + v + '"]';
+        var h1 = this.findInShadows(dst, ds);
+
+        if (!h1 && dst.selectedItem) {
+          h1 = this.findInShadows(dst.selectedItem, ds);
+        }
+
+        // console.log('src', src);
+        // console.log('dst', dst, dst.selectedItem);
+        // console.log(v, h0, h1);
+        if (v && h1) {
+          var c0 = getComputedStyle(h0);
+          var c1 = getComputedStyle(h1);
+          var h = {
+            h0: h0,
+            b0: h0.getBoundingClientRect(),
+            r0: c0.borderRadius,
+            h1: h1,
+            b1: h1.getBoundingClientRect(),
+            r1: c1.borderRadius
+          };
+
+          var dl = h.b0.left - h.b1.left;
+          var dt = h.b0.top - h.b1.top;
+          var sw = h.b0.width / h.b1.width;
+          var sh = h.b0.height / h.b1.height;
+
+          // h.scaley = h.h0.hasAttribute('scaley');
+          // if (!h.scaley && (sw !== 1 || sh !== 1)) {
+          //   sw = sh = 1;
+          //   h.h1.style.width = h.b0.width + 'px';
+          //   h.h1.style.height = h.b0.height + 'px';
+          // }
+
+          // Also animate the border-radius for the circle-to-square transition
+          if (h.r0 !== h.r1) {
+            h.h1.style.borderRadius = h.r0;
+          }
+
+          // console.log(h);
+
+          h.h1.style[TRANSFORM_NAME] = 'translate(' + dl + 'px,' + dt + 'px)' + ' scale(' + sw + ',' + sh + ')';
+          h.h1.style[TRANSFORM_NAME + 'Origin'] = '0 0';
+
+          scope._heroes.push(h);
+        }
+      }
+
+    },
+
+    // carefully look into ::shadow with polyfill specific hack
+    findInShadows: function(node, selector) {
+      return node.querySelector(selector) || (hasShadowDOMPolyfill ? 
+          Platform.queryAllShadows(node, selector) :
+          node.querySelector('::shadow ' + selector));
+    },
+
+    findAllInShadows: function(node, selector) {
+      if (hasShadowDOMPolyfill) {
+        var nodes = node.querySelectorAll(selector).array();
+        var shadowNodes = Platform.queryAllShadows(node, selector, true);
+        return nodes.concat(shadowNodes);
+      } else {
+        return node.querySelectorAll(selector).array().concat(node.shadowRoot ? node.shadowRoot.querySelectorAll(selector).array() : []);
+      }
+    },
+
+    ensureComplete: function(scope) {
+      this.super(arguments);
+      if (scope._heroes) {
+        scope._heroes.forEach(function(h) {
+          h.h1.style[TRANSITION_NAME] = null;
+          h.h1.style[TRANSFORM_NAME] = null;
+        });
+        scope._heroes = [];
+      }
+    },
+
+    complete: function(scope, e) {
+      // if (e.propertyName === TRANSFORM_CSSNAME) {
+        var done = false;
+        scope._heroes.forEach(function(h) {
+          if (h.h1 === e.path[0]) {
+            done = true;
+          }
+        });
+
+        if (done) {
+          this.super(arguments);
+        }
+      // }
+    }
+
+  });
+
+})();