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 "core/dom/ContextFeatures.h" 29 30 #include "core/dom/Document.h" 31 #include "core/page/Page.h" 32 #include "platform/RuntimeEnabledFeatures.h" 33 34 namespace blink { 35 36 PassOwnPtr<ContextFeaturesClient> ContextFeaturesClient::empty() 37 { 38 return adoptPtr(new ContextFeaturesClient()); 39 } 40 41 const char* ContextFeatures::supplementName() 42 { 43 return "ContextFeatures"; 44 } 45 46 ContextFeatures* ContextFeatures::defaultSwitch() 47 { 48 DEFINE_STATIC_REF_WILL_BE_PERSISTENT(ContextFeatures, instance, (ContextFeatures::create(ContextFeaturesClient::empty()))); 49 return instance; 50 } 51 52 bool ContextFeatures::pagePopupEnabled(Document* document) 53 { 54 if (!document) 55 return false; 56 return document->contextFeatures().isEnabled(document, PagePopup, false); 57 } 58 59 bool ContextFeatures::mutationEventsEnabled(Document* document) 60 { 61 ASSERT(document); 62 if (!document) 63 return true; 64 return document->contextFeatures().isEnabled(document, MutationEvents, true); 65 } 66 67 bool ContextFeatures::pushStateEnabled(Document* document) 68 { 69 return document->contextFeatures().isEnabled(document, PushState, true); 70 } 71 72 void provideContextFeaturesTo(Page& page, PassOwnPtr<ContextFeaturesClient> client) 73 { 74 ContextFeatures::SupplementType::provideTo(page, ContextFeatures::supplementName(), ContextFeatures::create(client)); 75 } 76 77 void provideContextFeaturesToDocumentFrom(Document& document, Page& page) 78 { 79 ContextFeatures* provided = static_cast<ContextFeatures*>(ContextFeatures::SupplementType::from(page, ContextFeatures::supplementName())); 80 if (!provided) 81 return; 82 document.setContextFeatures(*provided); 83 } 84 85 } 86