npm_modules: Fork bower_components into Polymer 0.4.0 and 0.5.0 versions

polymer_0.5.0/bower_components/web-animations-js/src/number-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) {
+
+  function numberToString(x) {
+    return x.toFixed(3).replace('.000', '');
+  }
+
+  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 round(left, right) {
+    return [left, right, Math.round];
+  }
+
+  scope.clamp = clamp;
+  scope.addPropertiesHandler(parseNumber, clampedMergeNumbers(0, Infinity), ['border-image-width', 'line-height']);
+  scope.addPropertiesHandler(parseNumber, clampedMergeNumbers(0, 1), ['opacity', 'shape-image-threshold']);
+  scope.addPropertiesHandler(parseNumber, clampedMergeNumbers(0.01, Infinity), ['zoom']);
+  scope.addPropertiesHandler(parseNumber, mergeFlex, ['flex-grow', 'flex-shrink']);
+  scope.addPropertiesHandler(parseNumber, mergeNumbers, ['zoom']);
+  scope.addPropertiesHandler(parseNumber, mergePositiveIntegers, ['orphans', 'widows']);
+  scope.addPropertiesHandler(parseNumber, round, ['z-index']);
+
+  scope.parseNumber = parseNumber;
+  scope.mergeNumbers = mergeNumbers;
+  scope.numberToString = numberToString;
+
+})(webAnimationsMinifill, webAnimationsTesting);