1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * (C) 1999 Antti Koivisto (koivisto (at) kde.org) 4 * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 */ 21 22 #include "config.h" 23 #include "core/html/HTMLMapElement.h" 24 25 #include "core/HTMLNames.h" 26 #include "core/dom/Document.h" 27 #include "core/dom/ElementTraversal.h" 28 #include "core/dom/NodeListsNodeData.h" 29 #include "core/frame/UseCounter.h" 30 #include "core/html/HTMLAreaElement.h" 31 #include "core/html/HTMLCollection.h" 32 #include "core/html/HTMLImageElement.h" 33 #include "core/rendering/HitTestResult.h" 34 35 namespace blink { 36 37 using namespace HTMLNames; 38 39 inline HTMLMapElement::HTMLMapElement(Document& document) 40 : HTMLElement(mapTag, document) 41 { 42 UseCounter::count(document, UseCounter::MapElement); 43 } 44 45 DEFINE_NODE_FACTORY(HTMLMapElement) 46 47 HTMLMapElement::~HTMLMapElement() 48 { 49 } 50 51 bool HTMLMapElement::mapMouseEvent(LayoutPoint location, const LayoutSize& size, HitTestResult& result) 52 { 53 HTMLAreaElement* defaultArea = 0; 54 for (HTMLAreaElement* area = Traversal<HTMLAreaElement>::firstWithin(*this); area; area = Traversal<HTMLAreaElement>::next(*area, this)) { 55 if (area->isDefault()) { 56 if (!defaultArea) 57 defaultArea = area; 58 } else if (area->mapMouseEvent(location, size, result)) { 59 return true; 60 } 61 } 62 63 if (defaultArea) { 64 result.setInnerNode(defaultArea); 65 result.setURLElement(defaultArea); 66 } 67 return defaultArea; 68 } 69 70 HTMLImageElement* HTMLMapElement::imageElement() 71 { 72 RefPtrWillBeRawPtr<HTMLCollection> images = document().images(); 73 for (unsigned i = 0; Element* curr = images->item(i); ++i) { 74 ASSERT(isHTMLImageElement(curr)); 75 76 // The HTMLImageElement's useMap() value includes the '#' symbol at the beginning, 77 // which has to be stripped off. 78 HTMLImageElement& imageElement = toHTMLImageElement(*curr); 79 String useMapName = imageElement.getAttribute(usemapAttr).string().substring(1); 80 if (equalIgnoringCase(useMapName, m_name)) 81 return &imageElement; 82 } 83 84 return 0; 85 } 86 87 void HTMLMapElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 88 { 89 // FIXME: This logic seems wrong for XML documents. 90 // Either the id or name will be used depending on the order the attributes are parsed. 91 92 if (isIdAttributeName(name) || name == nameAttr) { 93 if (isIdAttributeName(name)) { 94 // Call base class so that hasID bit gets set. 95 HTMLElement::parseAttribute(name, value); 96 if (document().isHTMLDocument()) 97 return; 98 } 99 if (inDocument()) 100 treeScope().removeImageMap(this); 101 String mapName = value; 102 if (mapName[0] == '#') 103 mapName = mapName.substring(1); 104 m_name = AtomicString(document().isHTMLDocument() ? mapName.lower() : mapName); 105 if (inDocument()) 106 treeScope().addImageMap(this); 107 108 return; 109 } 110 111 HTMLElement::parseAttribute(name, value); 112 } 113 114 PassRefPtrWillBeRawPtr<HTMLCollection> HTMLMapElement::areas() 115 { 116 return ensureCachedCollection<HTMLCollection>(MapAreas); 117 } 118 119 Node::InsertionNotificationRequest HTMLMapElement::insertedInto(ContainerNode* insertionPoint) 120 { 121 if (insertionPoint->inDocument()) 122 treeScope().addImageMap(this); 123 return HTMLElement::insertedInto(insertionPoint); 124 } 125 126 void HTMLMapElement::removedFrom(ContainerNode* insertionPoint) 127 { 128 if (insertionPoint->inDocument()) 129 treeScope().removeImageMap(this); 130 HTMLElement::removedFrom(insertionPoint); 131 } 132 133 } 134