Update wmts-hidpi, add nicer-api-docs

nicer-api-docs/closure-library/closure/goog/testing/style/style.js

@@ -0,0 +1,101 @@
+// Copyright 2011 The Closure Library Authors. 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.
+
+/**
+ * @fileoverview Utilities for inspecting page layout. This is a port of
+ *     http://go/layoutbot.java
+ *     See {@link http://go/layouttesting}.
+ */
+
+goog.provide('goog.testing.style');
+
+goog.require('goog.dom');
+goog.require('goog.math.Rect');
+goog.require('goog.style');
+
+
+/**
+ * Determines whether the bounding rectangles of the given elements intersect.
+ * @param {Element} element The first element.
+ * @param {Element} otherElement The second element.
+ * @return {boolean} Whether the bounding rectangles of the given elements
+ *     intersect.
+ */
+goog.testing.style.intersects = function(element, otherElement) {
+  var elementRect = goog.style.getBounds(element);
+  var otherElementRect = goog.style.getBounds(otherElement);
+  return goog.math.Rect.intersects(elementRect, otherElementRect);
+};
+
+
+/**
+ * Determines whether the element has visible dimensions, i.e. x > 0 && y > 0.
+ * @param {Element} element The element to check.
+ * @return {boolean} Whether the element has visible dimensions.
+ */
+goog.testing.style.hasVisibleDimensions = function(element) {
+  var elSize = goog.style.getSize(element);
+  var shortest = elSize.getShortest();
+  if (shortest <= 0) {
+    return false;
+  }
+
+  return true;
+};
+
+
+/**
+ * Determines whether the CSS style of the element renders it visible.
+ * @param {!Element} element The element to check.
+ * @return {boolean} Whether the CSS style of the element renders it visible.
+ */
+goog.testing.style.isVisible = function(element) {
+  var visibilityStyle =
+      goog.testing.style.getAvailableStyle_(element, 'visibility');
+  var displayStyle =
+      goog.testing.style.getAvailableStyle_(element, 'display');
+
+  return (visibilityStyle != 'hidden' && displayStyle != 'none');
+};
+
+
+/**
+ * Test whether the given element is on screen.
+ * @param {!Element} el The element to test.
+ * @return {boolean} Whether the element is on the screen.
+ */
+goog.testing.style.isOnScreen = function(el) {
+  var doc = goog.dom.getDomHelper(el).getDocument();
+  var viewport = goog.style.getVisibleRectForElement(doc.body);
+  var viewportRect = goog.math.Rect.createFromBox(viewport);
+  return goog.dom.contains(doc, el) &&
+      goog.style.getBounds(el).intersects(viewportRect);
+};
+
+
+/**
+ * This is essentially goog.style.getStyle_. goog.style.getStyle_ is private
+ * and is not a recommended way for general purpose style extractor. For the
+ * purposes of layout testing, we only use this function for retrieving
+ * 'visiblity' and 'display' style.
+ * @param {!Element} element The element to retrieve the style from.
+ * @param {string} style Style property name.
+ * @return {string} Style value.
+ * @private
+ */
+goog.testing.style.getAvailableStyle_ = function(element, style) {
+  return goog.style.getComputedStyle(element, style) ||
+      goog.style.getCascadedStyle(element, style) ||
+      goog.style.getStyle(element, style);
+};