1/* 2 * Copyright (C) 2012 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Neither the name of Google Inc. nor the names of its 11 * contributors may be used to endorse or promote products derived from 12 * this software without specific prior written permission. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 15 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 16 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 17 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 18 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 20 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#include "config.h" 28#include "ContextFeatures.h" 29 30#include "Document.h" 31#include "Page.h" 32#include "RuntimeEnabledFeatures.h" 33 34namespace WebCore { 35 36ContextFeaturesClient* ContextFeaturesClient::empty() 37{ 38 DEFINE_STATIC_LOCAL(ContextFeaturesClient, empty, ()); 39 return ∅ 40} 41 42const char* ContextFeatures::supplementName() 43{ 44 return "ContextFeatures"; 45} 46 47ContextFeatures* ContextFeatures::defaultSwitch() 48{ 49 DEFINE_STATIC_LOCAL(RefPtr<ContextFeatures>, instance, (ContextFeatures::create(ContextFeaturesClient::empty()))); 50 return instance.get(); 51} 52 53bool ContextFeatures::dialogElementEnabled(Document* document) 54{ 55#if ENABLE(DIALOG_ELEMENT) 56 if (!document) 57 return RuntimeEnabledFeatures::dialogElementEnabled(); 58 return document->contextFeatures()->isEnabled(document, DialogElement, RuntimeEnabledFeatures::dialogElementEnabled()); 59#else 60 UNUSED_PARAM(document); 61 return false; 62#endif 63} 64 65bool ContextFeatures::styleScopedEnabled(Document* document) 66{ 67#if ENABLE(STYLE_SCOPED) 68 if (!document) 69 return RuntimeEnabledFeatures::styleScopedEnabled(); 70 return document->contextFeatures()->isEnabled(document, StyleScoped, RuntimeEnabledFeatures::styleScopedEnabled()); 71#else 72 UNUSED_PARAM(document); 73 return false; 74#endif 75} 76 77bool ContextFeatures::htmlNotificationsEnabled(Document* document) 78{ 79#if ENABLE(LEGACY_NOTIFICATIONS) 80 if (!document) 81 return false; 82 return document->contextFeatures()->isEnabled(document, HTMLNotifications, false); 83#else 84 UNUSED_PARAM(document); 85 return false; 86#endif 87} 88 89bool ContextFeatures::mutationEventsEnabled(Document* document) 90{ 91 ASSERT(document); 92 if (!document) 93 return true; 94 return document->contextFeatures()->isEnabled(document, MutationEvents, true); 95} 96 97bool ContextFeatures::pushStateEnabled(Document* document) 98{ 99 return document->contextFeatures()->isEnabled(document, PushState, true); 100} 101 102void provideContextFeaturesTo(Page* page, ContextFeaturesClient* client) 103{ 104 RefCountedSupplement<Page, ContextFeatures>::provideTo(page, ContextFeatures::supplementName(), ContextFeatures::create(client)); 105} 106 107void provideContextFeaturesToDocumentFrom(Document* document, Page* page) 108{ 109 ContextFeatures* provided = static_cast<ContextFeatures*>(RefCountedSupplement<Page, ContextFeatures>::from(page, ContextFeatures::supplementName())); 110 if (!provided) 111 return; 112 document->setContextFeatures(provided); 113} 114 115} 116