Fix Polymer licensing issues

third_party/web-animations-js/sources/src/transform-handler.js

-// 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, testing) {
-
-  // This returns a function for converting transform functions to equivalent
-  // primitive functions, which will take an array of values from the
-  // derivative type and fill in the blanks (underscores) with them.
-  var _ = null;
-  function cast(pattern) {
-    return function(contents) {
-      var i = 0;
-      return pattern.map(function(x) { return x === _ ? contents[i++] : x; });
-    }
-  }
-
-  function id(x) { return x; }
-
-  var Opx = {px: 0};
-  var Odeg = {deg: 0};
-
-  // type: [argTypes, convertTo3D, convertTo2D]
-  // In the argument types string, lowercase characters represent optional arguments
-  var transformFunctions = {
-    matrix: ['NNNNNN', [_, _, 0, 0, _, _, 0, 0, 0, 0, 1, 0, _, _, 0, 1], id],
-    matrix3d: ['NNNNNNNNNNNNNNNN', id],
-    rotate: ['A'],
-    rotatex: ['A'],
-    rotatey: ['A'],
-    rotatez: ['A'],
-    rotate3d: ['NNNA'],
-    perspective: ['L'],
-    scale: ['Nn', cast([_, _, 1]), id],
-    scalex: ['N', cast([_, 1, 1]), cast([_, 1])],
-    scaley: ['N', cast([1, _, 1]), cast([1, _])],
-    scalez: ['N', cast([1, 1, _])],
-    scale3d: ['NNN', id],
-    skew: ['Aa', null, id],
-    skewx: ['A', null, cast([_, Odeg])],
-    skewy: ['A', null, cast([Odeg, _])],
-    translate: ['Tt', cast([_, _, Opx]), id],
-    translatex: ['T', cast([_, Opx, Opx]), cast([_, Opx])],
-    translatey: ['T', cast([Opx, _, Opx]), cast([Opx, _])],
-    translatez: ['L', cast([Opx, Opx, _])],
-    translate3d: ['TTL', id],
-  };
-
-  function parseTransform(string) {
-    string = string.toLowerCase().trim();
-    if (string == 'none')
-      return [];
-    // FIXME: Using a RegExp means calcs won't work here
-    var transformRegExp = /\s*(\w+)\(([^)]*)\)/g;
-    var result = [];
-    var match;
-    var prevLastIndex = 0;
-    while (match = transformRegExp.exec(string)) {
-      if (match.index != prevLastIndex)
-        return;
-      prevLastIndex = match.index + match[0].length;
-      var functionName = match[1];
-      var functionData = transformFunctions[functionName];
-      if (!functionData)
-        return;
-      var args = match[2].split(',');
-      var argTypes = functionData[0];
-      if (argTypes.length < args.length)
-        return;
-
-      var parsedArgs = [];
-      for (var i = 0; i < argTypes.length; i++) {
-        var arg = args[i];
-        var type = argTypes[i];
-        var parsedArg;
-        if (!arg)
-          parsedArg = ({a: Odeg,
-                        n: parsedArgs[0],
-                        t: Opx})[type];
-        else
-          parsedArg = ({A: function(s) { return s.trim() == '0' ? Odeg : scope.parseAngle(s); },
-                        N: scope.parseNumber,
-                        T: scope.parseLengthOrPercent,
-                        L: scope.parseLength})[type.toUpperCase()](arg);
-        if (parsedArg === undefined)
-          return;
-        parsedArgs.push(parsedArg);
-      }
-      result.push({t: functionName, d: parsedArgs});
-
-      if (transformRegExp.lastIndex == string.length)
-        return result;
-    }
-  };
-
-  function numberToLongString(x) {
-    return x.toFixed(6).replace('.000000', '');
-  }
-
-  function mergeMatrices(left, right) {
-    if (left.decompositionPair !== right) {
-      left.decompositionPair = right;
-      var leftArgs = scope.makeMatrixDecomposition(left);
-    }
-    if (right.decompositionPair !== left) {
-      right.decompositionPair = left;
-      var rightArgs = scope.makeMatrixDecomposition(right);
-    }
-    if (leftArgs[0] == null || rightArgs[0] == null)
-      return [[false], [true], function(x) { return x ? right[0].d : left[0].d; }];
-    leftArgs[0].push(0);
-    rightArgs[0].push(1);
-    return [
-      leftArgs,
-      rightArgs,
-      function(list) {
-        var quat = scope.quat(leftArgs[0][3], rightArgs[0][3], list[5]);
-        var mat = scope.composeMatrix(list[0], list[1], list[2], quat, list[4]);
-        var stringifiedArgs = mat.map(numberToLongString).join(',');
-        return stringifiedArgs;
-      }
-    ];
-  }
-
-  function typeTo2D(type) {
-    return type.replace(/[xy]/, '');
-  }
-
-  function typeTo3D(type) {
-    return type.replace(/(x|y|z|3d)?$/, '3d');
-  }
-
-  function mergeTransforms(left, right) {
-    var matrixModulesLoaded = scope.makeMatrixDecomposition && true;
-
-    var flipResults = false;
-    if (!left.length || !right.length) {
-      if (!left.length) {
-        flipResults = true;
-        left = right;
-        right = [];
-      }
-      for (var i = 0; i < left.length; i++) {
-        var type = left[i].t;
-        var args = left[i].d;
-        var defaultValue = type.substr(0, 5) == 'scale' ? 1 : 0;
-        right.push({t: type, d: args.map(function(arg) {
-          if (typeof arg == 'number')
-            return defaultValue;
-          var result = {};
-          for (var unit in arg)
-            result[unit] = defaultValue;
-          return result;
-        })});
-      }
-    }
-
-    var isMatrixOrPerspective = function(lt, rt) {
-      return ((lt == 'perspective') && (rt == 'perspective')) ||
-          ((lt == 'matrix' || lt == 'matrix3d') && (rt == 'matrix' || rt == 'matrix3d'));
-    };
-    var leftResult = [];
-    var rightResult = [];
-    var types = [];
-
-    if (left.length != right.length) {
-      if (!matrixModulesLoaded)
-        return;
-      var merged = mergeMatrices(left, right);
-      leftResult = [merged[0]];
-      rightResult = [merged[1]];
-      types = [['matrix', [merged[2]]]];
-    } else {
-      for (var i = 0; i < left.length; i++) {
-        var leftType = left[i].t;
-        var rightType = right[i].t;
-        var leftArgs = left[i].d;
-        var rightArgs = right[i].d;
-
-        var leftFunctionData = transformFunctions[leftType];
-        var rightFunctionData = transformFunctions[rightType];
-
-        var type;
-        if (isMatrixOrPerspective(leftType, rightType)) {
-          if (!matrixModulesLoaded)
-            return;
-          var merged = mergeMatrices([left[i]], [right[i]]);
-          leftResult.push(merged[0]);
-          rightResult.push(merged[1]);
-          types.push(['matrix', [merged[2]]]);
-          continue;
-        } else if (leftType == rightType) {
-          type = leftType;
-        } else if (leftFunctionData[2] && rightFunctionData[2] && typeTo2D(leftType) == typeTo2D(rightType)) {
-          type = typeTo2D(leftType);
-          leftArgs = leftFunctionData[2](leftArgs);
-          rightArgs = rightFunctionData[2](rightArgs);
-        } else if (leftFunctionData[1] && rightFunctionData[1] && typeTo3D(leftType) == typeTo3D(rightType)) {
-          type = typeTo3D(leftType);
-          leftArgs = leftFunctionData[1](leftArgs);
-          rightArgs = rightFunctionData[1](rightArgs);
-        } else {
-          if (!matrixModulesLoaded)
-            return;
-          var merged = mergeMatrices(left, right);
-          leftResult = [merged[0]];
-          rightResult = [merged[1]];
-          types = [['matrix', [merged[2]]]];
-          break;
-        }
-
-        var leftArgsCopy = [];
-        var rightArgsCopy = [];
-        var stringConversions = [];
-        for (var j = 0; j < leftArgs.length; j++) {
-          var merge = typeof leftArgs[j] == 'number' ? scope.mergeNumbers : scope.mergeDimensions;
-          var merged = merge(leftArgs[j], rightArgs[j]);
-          leftArgsCopy[j] = merged[0];
-          rightArgsCopy[j] = merged[1];
-          stringConversions.push(merged[2]);
-        }
-        leftResult.push(leftArgsCopy);
-        rightResult.push(rightArgsCopy);
-        types.push([type, stringConversions]);
-      }
-    }
-
-    if (flipResults) {
-      var tmp = leftResult;
-      leftResult = rightResult;
-      rightResult = tmp;
-    }
-
-    return [leftResult, rightResult, function(list) {
-      return list.map(function(args, i) {
-        var stringifiedArgs = args.map(function(arg, j) {
-          return types[i][1][j](arg);
-        }).join(',');
-        if (types[i][0] == 'matrix' && stringifiedArgs.split(',').length == 16)
-          types[i][0] = 'matrix3d';
-        return types[i][0] + '(' + stringifiedArgs + ')';
-
-      }).join(' ');
-    }];
-  }
-
-  scope.addPropertiesHandler(parseTransform, mergeTransforms, ['transform']);
-
-  if (WEB_ANIMATIONS_TESTING)
-    testing.parseTransform = parseTransform;
-
-})(webAnimations1, webAnimationsTesting);