1 files changed, 108 insertions, 0 deletions
diff --git a/catapult/third_party/polymer/components/web-animations-js/src/shadow-handler.js b/catapult/third_party/polymer/components/web-animations-js/src/shadow-handler.js
new file mode 100644
index 00000000..3f8201d8
--- /dev/null
+++ b/catapult/third_party/polymer/components/web-animations-js/src/shadow-handler.js
@@ -0,0 +1,108 @@
+// Copyright 2014 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+// limitations under the License.
+
+(function(scope) {
+
+  function consumeShadow(string) {
+    var shadow = {
+      inset: false,
+      lengths: [],
+      color: null,
+    };
+    function consumePart(string) {
+      var result = scope.consumeToken(/^inset/i, string);
+      if (result) {
+        shadow.inset = true;
+        return result;
+      }
+      var result = scope.consumeLengthOrPercent(string);
+      if (result) {
+        shadow.lengths.push(result[0]);
+        return result;
+      }
+      var result = scope.consumeColor(string);
+      if (result) {
+        shadow.color = result[0];
+        return result;
+      }
+    }
+    var result = scope.consumeRepeated(consumePart, /^/, string);
+    if (result && result[0].length) {
+      return [shadow, result[1]];
+    }
+  }
+
+  function parseShadowList(string) {
+    var result = scope.consumeRepeated(consumeShadow, /^,/, string);
+    if (result && result[1] == '') {
+      return result[0];
+    }
+  }
+
+  function mergeShadow(left, right) {
+    while (left.lengths.length < Math.max(left.lengths.length, right.lengths.length))
+      left.lengths.push({px: 0});
+    while (right.lengths.length < Math.max(left.lengths.length, right.lengths.length))
+      right.lengths.push({px: 0});
+
+    if (left.inset != right.inset || !!left.color != !!right.color) {
+      return;
+    }
+    var lengthReconstitution = [];
+    var colorReconstitution;
+    var matchingLeft = [[], 0];
+    var matchingRight = [[], 0];
+    for (var i = 0; i < left.lengths.length; i++) {
+      var mergedDimensions = scope.mergeDimensions(left.lengths[i], right.lengths[i], i == 2);
+      matchingLeft[0].push(mergedDimensions[0]);
+      matchingRight[0].push(mergedDimensions[1]);
+      lengthReconstitution.push(mergedDimensions[2]);
+    }
+    if (left.color && right.color) {
+      var mergedColor = scope.mergeColors(left.color, right.color);
+      matchingLeft[1] = mergedColor[0];
+      matchingRight[1] = mergedColor[1];
+      colorReconstitution = mergedColor[2];
+    }
+    return [matchingLeft, matchingRight, function(value) {
+      var result = left.inset ? 'inset ' : ' ';
+      for (var i = 0; i < lengthReconstitution.length; i++) {
+        result += lengthReconstitution[i](value[0][i]) + ' ';
+      }
+      if (colorReconstitution) {
+        result += colorReconstitution(value[1]);
+      }
+      return result;
+    }];
+  }
+
+  function mergeNestedRepeatedShadow(nestedMerge, separator, left, right) {
+    var leftCopy = [];
+    var rightCopy = [];
+    function defaultShadow(inset) {
+      return {inset: inset, color: [0, 0, 0, 0], lengths: [{px: 0}, {px: 0}, {px: 0}, {px: 0}]};
+    }
+    for (var i = 0; i < left.length || i < right.length; i++) {
+      var l = left[i] || defaultShadow(right[i].inset);
+      var r = right[i] || defaultShadow(left[i].inset);
+      leftCopy.push(l);
+      rightCopy.push(r);
+    }
+    return scope.mergeNestedRepeated(nestedMerge, separator, leftCopy, rightCopy);
+  }
+
+  var mergeShadowList = mergeNestedRepeatedShadow.bind(null, mergeShadow, ', ');
+  scope.addPropertiesHandler(parseShadowList, mergeShadowList, ['box-shadow', 'text-shadow']);
+
+})(webAnimations1);