1/* 2 * Copyright (C) 2010, 2011 Apple 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include "config.h" 27#include "WebPreferencesStore.h" 28 29#include "FontSmoothingLevel.h" 30#include "WebCoreArgumentCoders.h" 31#include "WebPreferencesKeys.h" 32#include <WebCore/Settings.h> 33#include <WebCore/TextEncodingRegistry.h> 34#include <wtf/NeverDestroyed.h> 35 36#if PLATFORM(IOS) 37#import <WebKitSystemInterfaceIOS.h> 38#endif 39 40using namespace WebCore; 41 42namespace WebKit { 43 44typedef HashMap<String, bool> BoolOverridesMap; 45 46static BoolOverridesMap& boolTestRunnerOverridesMap() 47{ 48 static NeverDestroyed<BoolOverridesMap> map; 49 return map; 50} 51 52void WebPreferencesStore::Value::encode(IPC::ArgumentEncoder& encoder) const 53{ 54 encoder.encodeEnum(m_type); 55 56 switch (m_type) { 57 case Type::None: 58 break; 59 case Type::String: 60 encoder << m_string; 61 break; 62 case Type::Bool: 63 encoder << m_bool; 64 break; 65 case Type::UInt32: 66 encoder << m_uint32; 67 break; 68 case Type::Double: 69 encoder << m_double; 70 break; 71 } 72} 73 74bool WebPreferencesStore::Value::decode(IPC::ArgumentDecoder& decoder, Value& result) 75{ 76 Value::Type type; 77 if (!decoder.decodeEnum(type)) 78 return false; 79 80 switch (type) { 81 case Type::None: 82 break; 83 case Type::String: { 84 String value; 85 if (!decoder.decode(value)) 86 return false; 87 result = Value(value); 88 break; 89 } 90 case Type::Bool: { 91 bool value; 92 if (!decoder.decode(value)) 93 return false; 94 result = Value(value); 95 break; 96 } 97 case Type::UInt32: { 98 uint32_t value; 99 if (!decoder.decode(value)) 100 return false; 101 result = Value(value); 102 break; 103 } 104 case Type::Double: { 105 double value; 106 if (!decoder.decode(value)) 107 return false; 108 result = Value(value); 109 break; 110 } 111 default: 112 return false; 113 } 114 115 return true; 116} 117 118WebPreferencesStore::WebPreferencesStore() 119{ 120} 121 122void WebPreferencesStore::encode(IPC::ArgumentEncoder& encoder) const 123{ 124 encoder << m_values; 125 encoder << m_overridenDefaults; 126} 127 128bool WebPreferencesStore::decode(IPC::ArgumentDecoder& decoder, WebPreferencesStore& result) 129{ 130 if (!decoder.decode(result.m_values)) 131 return false; 132 if (!decoder.decode(result.m_overridenDefaults)) 133 return false; 134 return true; 135} 136 137void WebPreferencesStore::overrideBoolValueForKey(const String& key, bool value) 138{ 139 boolTestRunnerOverridesMap().set(key, value); 140} 141 142void WebPreferencesStore::removeTestRunnerOverrides() 143{ 144 boolTestRunnerOverridesMap().clear(); 145} 146 147template <typename T> struct ToType { }; 148 149template<> struct ToType<String> { static const auto value = WebPreferencesStore::Value::Type::String; }; 150template<> struct ToType<bool> { static const auto value = WebPreferencesStore::Value::Type::Bool; }; 151template<> struct ToType<uint32_t> { static const auto value = WebPreferencesStore::Value::Type::UInt32; }; 152template<> struct ToType<double> { static const auto value = WebPreferencesStore::Value::Type::Double; }; 153 154 155template<typename MappedType> MappedType as(const WebPreferencesStore::Value&); 156 157template<> String as<String>(const WebPreferencesStore::Value& value) { return value.asString(); } 158template<> bool as<bool>(const WebPreferencesStore::Value& value) { return value.asBool(); } 159template<> uint32_t as<uint32_t>(const WebPreferencesStore::Value& value) { return value.asUInt32(); } 160template<> double as<double>(const WebPreferencesStore::Value& value) { return value.asDouble(); } 161 162 163static WebPreferencesStore::ValueMap& defaults() 164{ 165 static NeverDestroyed<WebPreferencesStore::ValueMap> defaults; 166 if (defaults.get().isEmpty()) { 167#define DEFINE_DEFAULTS(KeyUpper, KeyLower, TypeName, Type, DefaultValue) defaults.get().set(WebPreferencesKey::KeyLower##Key(), WebPreferencesStore::Value((Type)DefaultValue)); 168 FOR_EACH_WEBKIT_PREFERENCE(DEFINE_DEFAULTS) 169 FOR_EACH_WEBKIT_DEBUG_PREFERENCE(DEFINE_DEFAULTS) 170#undef DEFINE_DEFAULTS 171 } 172 173 return defaults; 174} 175 176template<typename MappedType> 177static MappedType valueForKey(const WebPreferencesStore::ValueMap& values, const WebPreferencesStore::ValueMap& overridenDefaults, const String& key) 178{ 179 auto valuesIt = values.find(key); 180 if (valuesIt != values.end() && valuesIt->value.type() == ToType<MappedType>::value) 181 return as<MappedType>(valuesIt->value); 182 183 auto overridenDefaultsIt = overridenDefaults.find(key); 184 if (overridenDefaultsIt != overridenDefaults.end() && overridenDefaultsIt->value.type() == ToType<MappedType>::value) 185 return as<MappedType>(overridenDefaultsIt->value); 186 187 auto defaultsMap = defaults(); 188 auto defaultsIt = defaultsMap.find(key); 189 if (defaultsIt != defaultsMap.end() && defaultsIt->value.type() == ToType<MappedType>::value) 190 return as<MappedType>(defaultsIt->value); 191 192 return MappedType(); 193} 194 195template<typename MappedType> 196static bool setValueForKey(WebPreferencesStore::ValueMap& map, const WebPreferencesStore::ValueMap& overridenDefaults, const String& key, const MappedType& value) 197{ 198 MappedType existingValue = valueForKey<MappedType>(map, overridenDefaults, key); 199 if (existingValue == value) 200 return false; 201 202 map.set(key, WebPreferencesStore::Value(value)); 203 return true; 204} 205 206bool WebPreferencesStore::setStringValueForKey(const String& key, const String& value) 207{ 208 return setValueForKey<String>(m_values, m_overridenDefaults, key, value); 209} 210 211String WebPreferencesStore::getStringValueForKey(const String& key) const 212{ 213 return valueForKey<String>(m_values, m_overridenDefaults, key); 214} 215 216bool WebPreferencesStore::setBoolValueForKey(const String& key, bool value) 217{ 218 return setValueForKey<bool>(m_values, m_overridenDefaults, key, value); 219} 220 221bool WebPreferencesStore::getBoolValueForKey(const String& key) const 222{ 223 // FIXME: Extend overriding to other key types used from TestRunner. 224 auto it = boolTestRunnerOverridesMap().find(key); 225 if (it != boolTestRunnerOverridesMap().end()) 226 return it->value; 227 228 return valueForKey<bool>(m_values, m_overridenDefaults, key); 229} 230 231bool WebPreferencesStore::setUInt32ValueForKey(const String& key, uint32_t value) 232{ 233 return setValueForKey<uint32_t>(m_values, m_overridenDefaults, key, value); 234} 235 236uint32_t WebPreferencesStore::getUInt32ValueForKey(const String& key) const 237{ 238 return valueForKey<uint32_t>(m_values, m_overridenDefaults, key); 239} 240 241bool WebPreferencesStore::setDoubleValueForKey(const String& key, double value) 242{ 243 return setValueForKey<double>(m_values, m_overridenDefaults, key, value); 244} 245 246double WebPreferencesStore::getDoubleValueForKey(const String& key) const 247{ 248 return valueForKey<double>(m_values, m_overridenDefaults, key); 249} 250 251// Overriden Defaults 252 253void WebPreferencesStore::setOverrideDefaultsStringValueForKey(const String& key, String value) 254{ 255 m_overridenDefaults.set(key, Value(value)); 256} 257 258void WebPreferencesStore::setOverrideDefaultsBoolValueForKey(const String& key, bool value) 259{ 260 m_overridenDefaults.set(key, Value(value)); 261} 262 263void WebPreferencesStore::setOverrideDefaultsUInt32ValueForKey(const String& key, uint32_t value) 264{ 265 m_overridenDefaults.set(key, Value(value)); 266} 267 268void WebPreferencesStore::setOverrideDefaultsDoubleValueForKey(const String& key, double value) 269{ 270 m_overridenDefaults.set(key, Value(value)); 271} 272 273} // namespace WebKit 274