| // 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) { |
| |
| function numberToString(x) { |
| return x.toFixed(3).replace(/0+$/, '').replace(/\.$/, ''); |
| } |
| |
| function clamp(min, max, x) { |
| return Math.min(max, Math.max(min, x)); |
| } |
| |
| function parseNumber(string) { |
| if (/^\s*[-+]?(\d*\.)?\d+\s*$/.test(string)) |
| return Number(string); |
| } |
| |
| function mergeNumbers(left, right) { |
| return [left, right, numberToString]; |
| } |
| |
| // FIXME: This should probably go in it's own handler. |
| function mergeFlex(left, right) { |
| if (left == 0) |
| return; |
| return clampedMergeNumbers(0, Infinity)(left, right); |
| } |
| |
| function mergePositiveIntegers(left, right) { |
| return [left, right, function(x) { |
| return Math.round(clamp(1, Infinity, x)); |
| }]; |
| } |
| |
| function clampedMergeNumbers(min, max) { |
| return function(left, right) { |
| return [left, right, function(x) { |
| return numberToString(clamp(min, max, x)); |
| }]; |
| }; |
| } |
| |
| function parseNumberList(string) { |
| var items = string.trim().split(/\s*[\s,]\s*/); |
| if (items.length === 0) { |
| return; |
| } |
| var result = []; |
| for (var i = 0; i < items.length; i++) { |
| var number = parseNumber(items[i]); |
| if (number === undefined) { |
| return; |
| } |
| result.push(number); |
| } |
| return result; |
| } |
| |
| function mergeNumberLists(left, right) { |
| if (left.length != right.length) { |
| return; |
| } |
| return [left, right, function(numberList) { |
| return numberList.map(numberToString).join(' '); |
| }]; |
| } |
| |
| function round(left, right) { |
| return [left, right, Math.round]; |
| } |
| |
| scope.clamp = clamp; |
| scope.addPropertiesHandler(parseNumberList, mergeNumberLists, ['stroke-dasharray']); |
| scope.addPropertiesHandler(parseNumber, clampedMergeNumbers(0, Infinity), ['border-image-width', 'line-height']); |
| scope.addPropertiesHandler(parseNumber, clampedMergeNumbers(0, 1), ['opacity', 'shape-image-threshold']); |
| scope.addPropertiesHandler(parseNumber, mergeFlex, ['flex-grow', 'flex-shrink']); |
| scope.addPropertiesHandler(parseNumber, mergePositiveIntegers, ['orphans', 'widows']); |
| scope.addPropertiesHandler(parseNumber, round, ['z-index']); |
| |
| scope.parseNumber = parseNumber; |
| scope.parseNumberList = parseNumberList; |
| scope.mergeNumbers = mergeNumbers; |
| scope.numberToString = numberToString; |
| |
| })(webAnimations1, webAnimationsTesting); |