1926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)/* 2926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Copyright (C) 1999 Lars Knoll (knoll@kde.org) 3926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com) 4926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com) 5926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved. 6926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org> 7926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org> 8926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) 9926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Copyright (c) 2011, Code Aurora Forum. All rights reserved. 10926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Copyright (C) Research In Motion Limited 2011. All rights reserved. 11926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Copyright (C) 2012 Google Inc. All rights reserved. 12926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * 13926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * This library is free software; you can redistribute it and/or 14926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * modify it under the terms of the GNU Library General Public 15926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * License as published by the Free Software Foundation; either 16926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * version 2 of the License, or (at your option) any later version. 17926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * 18926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * This library is distributed in the hope that it will be useful, 19926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * but WITHOUT ANY WARRANTY; without even the implied warranty of 20926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 21926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Library General Public License for more details. 22926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * 23926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * You should have received a copy of the GNU Library General Public License 24926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * along with this library; see the file COPYING.LIB. If not, write to 25926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 26926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) * Boston, MA 02110-1301, USA. 27926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) */ 28926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 29926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)#include "config.h" 3053e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/dom/VisitedLinkState.h" 31926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 325d92fedcae5e801a8b224de090094f2d9df0b54aTorne (Richard Coles)#include "core/HTMLNames.h" 335d92fedcae5e801a8b224de090094f2d9df0b54aTorne (Richard Coles)#include "core/XLinkNames.h" 34e1f1df5f01594c0e62e751e4b46e779b85c2faa5Torne (Richard Coles)#include "core/dom/ElementTraversal.h" 3553e740f4a82e17f3ae59772501622dc354e42336Torne (Richard Coles)#include "core/html/HTMLAnchorElement.h" 365267f701546148b83dfbe1d151cb184385bb5c22Torne (Richard Coles)#include "public/platform/Platform.h" 37926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 38c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)namespace blink { 39926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 401e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)static inline const AtomicString& linkAttribute(const Element& element) 41926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles){ 421e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) ASSERT(element.isLink()); 431e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) if (element.isHTMLElement()) 441e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return element.fastGetAttribute(HTMLNames::hrefAttr); 451e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) ASSERT(element.isSVGElement()); 461e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return element.getAttribute(XLinkNames::hrefAttr); 4793ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles)} 4893ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) 491e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)static inline LinkHash linkHashForElement(const Element& element, const AtomicString& attribute = AtomicString()) 5093ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles){ 511e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) ASSERT(attribute.isNull() || linkAttribute(element) == attribute); 52d5428f32f5d1719f774f62e19147104ca245a3abTorne (Richard Coles) if (isHTMLAnchorElement(element)) 531e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return toHTMLAnchorElement(element).visitedLinkHash(); 541e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return visitedLinkHash(element.document().baseURL(), attribute.isNull() ? linkAttribute(element) : attribute); 55926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)} 56926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 571e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)VisitedLinkState::VisitedLinkState(const Document& document) 58926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) : m_document(document) 59926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles){ 60926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)} 61926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 62926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)void VisitedLinkState::invalidateStyleForAllLinks() 63926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles){ 64926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) if (m_linksCheckedForVisitedState.isEmpty()) 65926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) return; 669e12abdf8c3a23d52091ea54ebb6a04d327f9300Torne (Richard Coles) for (Node* node = document().firstChild(); node; node = NodeTraversal::next(*node)) { 679e12abdf8c3a23d52091ea54ebb6a04d327f9300Torne (Richard Coles) if (node->isLink()) 689e12abdf8c3a23d52091ea54ebb6a04d327f9300Torne (Richard Coles) node->setNeedsStyleRecalc(SubtreeStyleChange); 69926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) } 70926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)} 71926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 72926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)void VisitedLinkState::invalidateStyleForLink(LinkHash linkHash) 73926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles){ 74926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) if (!m_linksCheckedForVisitedState.contains(linkHash)) 75926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) return; 769e12abdf8c3a23d52091ea54ebb6a04d327f9300Torne (Richard Coles) for (Node* node = document().firstChild(); node; node = NodeTraversal::next(*node)) { 779e12abdf8c3a23d52091ea54ebb6a04d327f9300Torne (Richard Coles) if (node->isLink() && linkHashForElement(toElement(*node)) == linkHash) 789e12abdf8c3a23d52091ea54ebb6a04d327f9300Torne (Richard Coles) node->setNeedsStyleRecalc(SubtreeStyleChange); 79926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) } 80926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)} 81926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 821e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles)EInsideLink VisitedLinkState::determineLinkStateSlowCase(const Element& element) 83926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles){ 841e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) ASSERT(element.isLink()); 85c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) ASSERT(document().isActive()); 86c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) ASSERT(document() == element.document()); 87926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 8893ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) const AtomicString& attribute = linkAttribute(element); 89926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 9093ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) if (attribute.isNull()) 9193ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) return NotInsideLink; // This can happen for <img usemap> 92926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 9393ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) // An empty attribute refers to the document itself which is always 9493ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) // visited. It is useful to check this explicitly so that visited 9593ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) // links can be tested in platform independent manner, without 9693ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) // explicit support in the test harness. 9793ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) if (attribute.isEmpty()) 9893ac45cfc74041c8ae536ce58a9534d46db2024eTorne (Richard Coles) return InsideVisitedLink; 99926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 1001e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) if (LinkHash hash = linkHashForElement(element, attribute)) { 1011e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) m_linksCheckedForVisitedState.add(hash); 102e38fbeeb576b5094e34e038ab88d9d6a5c5c2214Torne (Richard Coles) if (Platform::current()->isLinkVisited(hash)) 1031e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return InsideVisitedLink; 1041e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) } 105926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 1061e202183a5dc46166763171984b285173f8585e5Torne (Richard Coles) return InsideUnvisitedLink; 107926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles)} 108926b001d589ce2f10facb93dd4b87578ea35a855Torne (Richard Coles) 109c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)void VisitedLinkState::trace(Visitor* visitor) 110c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles){ 111c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) visitor->trace(m_document); 112c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles)} 113c1847b1379d12d0e05df27436bf19a9b1bf12deaTorne (Richard Coles) 114e38fbeeb576b5094e34e038ab88d9d6a5c5c2214Torne (Richard Coles)} // namespace blink 115