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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 package org.chromium.distiller; | 5 package org.chromium.distiller; |
6 | 6 |
7 import com.google.gwt.core.client.JsArray; | 7 import com.google.gwt.core.client.JsArray; |
8 import com.google.gwt.core.client.JsArrayString; | 8 import com.google.gwt.core.client.JsArrayString; |
9 import com.google.gwt.dom.client.AnchorElement; | 9 import com.google.gwt.dom.client.AnchorElement; |
10 import com.google.gwt.dom.client.Document; | 10 import com.google.gwt.dom.client.Document; |
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95 }-*/; | 95 }-*/; |
96 | 96 |
97 public static boolean isVisible(Element e) { | 97 public static boolean isVisible(Element e) { |
98 Style style = getComputedStyle(e); | 98 Style style = getComputedStyle(e); |
99 double opacity = JavaScript.parseFloat(style.getOpacity()); | 99 double opacity = JavaScript.parseFloat(style.getOpacity()); |
100 return !(style.getDisplay().equals("none") || | 100 return !(style.getDisplay().equals("none") || |
101 style.getVisibility().equals("hidden") || | 101 style.getVisibility().equals("hidden") || |
102 opacity == 0.0F); | 102 opacity == 0.0F); |
103 } | 103 } |
104 | 104 |
| 105 /** |
| 106 * Verifies if a given element is visible by checking its offset. |
| 107 */ |
| 108 public static boolean isVisibleByItsOffset(Element e) { |
| 109 return !(e.getOffsetHeight() <= 0 || e.getOffsetWidth() <= 0); |
| 110 } |
| 111 |
105 /* | 112 /* |
106 * We want to use jsni for direct access to javascript's innerText. This av
oids GWT's | 113 * We want to use jsni for direct access to javascript's innerText. This av
oids GWT's |
107 * implementation of Element::getInnerText(), which is intentionally differe
nt to mimic an old | 114 * implementation of Element::getInnerText(), which is intentionally differe
nt to mimic an old |
108 * IE behaviour, which returns text within <script> tags. | 115 * IE behaviour, which returns text within <script> tags. |
109 */ | 116 */ |
110 public static native String getInnerText(Node node) /*-{ | 117 public static native String getInnerText(Node node) /*-{ |
111 return node.innerText; | 118 return node.innerText; |
112 }-*/; | 119 }-*/; |
113 | 120 |
114 public static native double getTime() /*-{ | 121 public static native double getTime() /*-{ |
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164 */ | 171 */ |
165 public static Node getNearestCommonAncestor(final Node n1, final Node n2) { | 172 public static Node getNearestCommonAncestor(final Node n1, final Node n2) { |
166 Node parent = n1; | 173 Node parent = n1; |
167 while (parent != null && !JavaScript.contains(parent, n2)) parent = pare
nt.getParentNode(); | 174 while (parent != null && !JavaScript.contains(parent, n2)) parent = pare
nt.getParentNode(); |
168 return parent; | 175 return parent; |
169 } | 176 } |
170 | 177 |
171 /** | 178 /** |
172 * Get the nearest common ancestor of nodes. | 179 * Get the nearest common ancestor of nodes. |
173 */ | 180 */ |
174 public static Node getNearestCommonAncestor(final NodeList ns) { | 181 public static Node getNearestCommonAncestor(final List<Element> ns) { |
175 if (ns.getLength() == 0) return null; | 182 if (ns.size() == 0) return null; |
176 Node parent = ns.getItem(0); | 183 Node parent = ns.get(0); |
177 for (int i = 1; i < ns.getLength(); i++) { | 184 for (int i = 1; i < ns.size(); i++) { |
178 parent = getNearestCommonAncestor(parent, ns.getItem(i)); | 185 parent = getNearestCommonAncestor(parent, ns.get(i)); |
179 } | 186 } |
180 return parent; | 187 return parent; |
181 } | 188 } |
182 | 189 |
183 /** | 190 /** |
184 * Get all text from a tree/sub-tree. | 191 * Get all text from a tree/sub-tree. |
185 * @param node The root of the tree. | 192 * @param node The root of the tree. |
186 * @return The text contained in this tree. | 193 * @return The text contained in this tree. |
187 */ | 194 */ |
188 public static String getTextFromTree(Node node) { | 195 public static String getTextFromTree(Node node) { |
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394 }-*/; | 401 }-*/; |
395 | 402 |
396 public static native Document createHTMLDocument(Document doc) /*-{ | 403 public static native Document createHTMLDocument(Document doc) /*-{ |
397 return doc.implementation.createHTMLDocument(); | 404 return doc.implementation.createHTMLDocument(); |
398 }-*/; | 405 }-*/; |
399 | 406 |
400 public static native Element getFirstElementChild(Document document) /*-{ | 407 public static native Element getFirstElementChild(Document document) /*-{ |
401 return document.firstElementChild; | 408 return document.firstElementChild; |
402 }-*/; | 409 }-*/; |
403 } | 410 } |
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