1// Copyright 2014 Google Inc. All rights reserved.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5//   You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12//   See the License for the specific language governing permissions and
13// limitations under the License.
14
15(function(scope) {
16
17  var consumeLengthOrPercent = scope.consumeParenthesised.bind(null, scope.parseLengthOrPercent);
18  var consumeLengthOrPercentPair = scope.consumeRepeated.bind(undefined, consumeLengthOrPercent, /^/);
19
20  var mergeSizePair = scope.mergeNestedRepeated.bind(undefined, scope.mergeDimensions, ' ');
21  var mergeSizePairList = scope.mergeNestedRepeated.bind(undefined, mergeSizePair, ',');
22
23  function parseShape(input) {
24    var circle = scope.consumeToken(/^circle/, input);
25    if (circle && circle[0]) {
26      return ['circle'].concat(scope.consumeList([
27        scope.ignore(scope.consumeToken.bind(undefined, /^\(/)),
28        consumeLengthOrPercent,
29        scope.ignore(scope.consumeToken.bind(undefined, /^at/)),
30        scope.consumePosition,
31        scope.ignore(scope.consumeToken.bind(undefined, /^\)/))
32      ], circle[1]));
33    }
34    var ellipse = scope.consumeToken(/^ellipse/, input);
35    if (ellipse && ellipse[0]) {
36      return ['ellipse'].concat(scope.consumeList([
37        scope.ignore(scope.consumeToken.bind(undefined, /^\(/)),
38        consumeLengthOrPercentPair,
39        scope.ignore(scope.consumeToken.bind(undefined, /^at/)),
40        scope.consumePosition,
41        scope.ignore(scope.consumeToken.bind(undefined, /^\)/))
42      ], ellipse[1]));
43    }
44    var polygon = scope.consumeToken(/^polygon/, input);
45    if (polygon && polygon[0]) {
46      return ['polygon'].concat(scope.consumeList([
47        scope.ignore(scope.consumeToken.bind(undefined, /^\(/)),
48        scope.optional(scope.consumeToken.bind(undefined, /^nonzero\s*,|^evenodd\s*,/), 'nonzero,'),
49        scope.consumeSizePairList,
50        scope.ignore(scope.consumeToken.bind(undefined, /^\)/))
51      ], polygon[1]));
52    }
53  }
54
55  function mergeShapes(left, right) {
56    if (left[0] !== right[0])
57      return;
58    if (left[0] == 'circle') {
59      return scope.mergeList(left.slice(1), right.slice(1), [
60        'circle(',
61        scope.mergeDimensions,
62        ' at ',
63        scope.mergeOffsetList,
64        ')']);
65    }
66    if (left[0] == 'ellipse') {
67      return scope.mergeList(left.slice(1), right.slice(1), [
68        'ellipse(',
69        scope.mergeNonNegativeSizePair,
70        ' at ',
71        scope.mergeOffsetList,
72        ')']);
73    }
74    if (left[0] == 'polygon' && left[1] == right[1]) {
75      return scope.mergeList(left.slice(2), right.slice(2), [
76        'polygon(',
77        left[1],
78        mergeSizePairList,
79        ')']);
80    }
81  }
82
83  scope.addPropertiesHandler(parseShape, mergeShapes, ['shape-outside']);
84
85})(webAnimations1);
86