1 /* 2 * Copyright (C) 2010 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 * * Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * * 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 THE COPYRIGHT HOLDERS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #include "config.h" 27 #include "V8DeviceMotionEvent.h" 28 29 #if ENABLE(DEVICE_ORIENTATION) 30 31 #include "DeviceMotionData.h" 32 #include "V8Binding.h" 33 #include "V8BindingMacros.h" 34 #include "V8Proxy.h" 35 36 #include <v8.h> 37 38 namespace WebCore { 39 40 namespace { 41 42 v8::Handle<v8::Value> createAccelerationObject(const DeviceMotionData::Acceleration* acceleration) 43 { 44 v8::Local<v8::Object> object = v8::Object::New(); 45 object->Set(v8::String::New("x"), acceleration->canProvideX() ? v8::Number::New(acceleration->x()) : v8::Null()); 46 object->Set(v8::String::New("y"), acceleration->canProvideY() ? v8::Number::New(acceleration->y()) : v8::Null()); 47 object->Set(v8::String::New("z"), acceleration->canProvideZ() ? v8::Number::New(acceleration->z()) : v8::Null()); 48 return object; 49 } 50 51 v8::Handle<v8::Value> createRotationRateObject(const DeviceMotionData::RotationRate* rotationRate) 52 { 53 v8::Local<v8::Object> object = v8::Object::New(); 54 object->Set(v8::String::New("alpha"), rotationRate->canProvideAlpha() ? v8::Number::New(rotationRate->alpha()) : v8::Null()); 55 object->Set(v8::String::New("beta"), rotationRate->canProvideBeta() ? v8::Number::New(rotationRate->beta()) : v8::Null()); 56 object->Set(v8::String::New("gamma"), rotationRate->canProvideGamma() ? v8::Number::New(rotationRate->gamma()) : v8::Null()); 57 return object; 58 } 59 60 RefPtr<DeviceMotionData::Acceleration> readAccelerationArgument(v8::Local<v8::Value> value) 61 { 62 if (isUndefinedOrNull(value)) 63 return 0; 64 65 // Given the test above, this will always yield an object. 66 v8::Local<v8::Object> object = value->ToObject(); 67 68 v8::Local<v8::Value> xValue = object->Get(v8::String::New("x")); 69 if (xValue.IsEmpty()) 70 return 0; 71 bool canProvideX = !isUndefinedOrNull(xValue); 72 double x = xValue->NumberValue(); 73 74 v8::Local<v8::Value> yValue = object->Get(v8::String::New("y")); 75 if (yValue.IsEmpty()) 76 return 0; 77 bool canProvideY = !isUndefinedOrNull(yValue); 78 double y = yValue->NumberValue(); 79 80 v8::Local<v8::Value> zValue = object->Get(v8::String::New("z")); 81 if (zValue.IsEmpty()) 82 return 0; 83 bool canProvideZ = !isUndefinedOrNull(zValue); 84 double z = zValue->NumberValue(); 85 86 if (!canProvideX && !canProvideY && !canProvideZ) 87 return 0; 88 89 return DeviceMotionData::Acceleration::create(canProvideX, x, canProvideY, y, canProvideZ, z); 90 } 91 92 RefPtr<DeviceMotionData::RotationRate> readRotationRateArgument(v8::Local<v8::Value> value) 93 { 94 if (isUndefinedOrNull(value)) 95 return 0; 96 97 // Given the test above, this will always yield an object. 98 v8::Local<v8::Object> object = value->ToObject(); 99 100 v8::Local<v8::Value> alphaValue = object->Get(v8::String::New("alpha")); 101 if (alphaValue.IsEmpty()) 102 return 0; 103 bool canProvideAlpha = !isUndefinedOrNull(alphaValue); 104 double alpha = alphaValue->NumberValue(); 105 106 v8::Local<v8::Value> betaValue = object->Get(v8::String::New("beta")); 107 if (betaValue.IsEmpty()) 108 return 0; 109 bool canProvideBeta = !isUndefinedOrNull(betaValue); 110 double beta = betaValue->NumberValue(); 111 112 v8::Local<v8::Value> gammaValue = object->Get(v8::String::New("gamma")); 113 if (gammaValue.IsEmpty()) 114 return 0; 115 bool canProvideGamma = !isUndefinedOrNull(gammaValue); 116 double gamma = gammaValue->NumberValue(); 117 118 if (!canProvideAlpha && !canProvideBeta && !canProvideGamma) 119 return 0; 120 121 return DeviceMotionData::RotationRate::create(canProvideAlpha, alpha, canProvideBeta, beta, canProvideGamma, gamma); 122 } 123 124 } // namespace 125 126 v8::Handle<v8::Value> V8DeviceMotionEvent::accelerationAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info) 127 { 128 INC_STATS("DOM.DeviceMotionEvent.acceleration._get"); 129 v8::Handle<v8::Object> holder = info.Holder(); 130 DeviceMotionEvent* imp = V8DeviceMotionEvent::toNative(holder); 131 if (!imp->deviceMotionData()->acceleration()) 132 return v8::Null(); 133 return createAccelerationObject(imp->deviceMotionData()->acceleration()); 134 } 135 136 v8::Handle<v8::Value> V8DeviceMotionEvent::accelerationIncludingGravityAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info) 137 { 138 INC_STATS("DOM.DeviceMotionEvent.accelerationIncludingGravity._get"); 139 v8::Handle<v8::Object> holder = info.Holder(); 140 DeviceMotionEvent* imp = V8DeviceMotionEvent::toNative(holder); 141 if (!imp->deviceMotionData()->accelerationIncludingGravity()) 142 return v8::Null(); 143 return createAccelerationObject(imp->deviceMotionData()->accelerationIncludingGravity()); 144 } 145 146 v8::Handle<v8::Value> V8DeviceMotionEvent::rotationRateAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info) 147 { 148 INC_STATS("DOM.DeviceMotionEvent.rotationRate._get"); 149 v8::Handle<v8::Object> holder = info.Holder(); 150 DeviceMotionEvent* imp = V8DeviceMotionEvent::toNative(holder); 151 if (!imp->deviceMotionData()->rotationRate()) 152 return v8::Null(); 153 return createRotationRateObject(imp->deviceMotionData()->rotationRate()); 154 } 155 156 v8::Handle<v8::Value> V8DeviceMotionEvent::intervalAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info) 157 { 158 INC_STATS("DOM.DeviceMotionEvent.interval._get"); 159 v8::Handle<v8::Object> holder = info.Holder(); 160 DeviceMotionEvent* imp = V8DeviceMotionEvent::toNative(holder); 161 if (!imp->deviceMotionData()->canProvideInterval()) 162 return v8::Null(); 163 return v8::Number::New(imp->deviceMotionData()->interval()); 164 } 165 166 v8::Handle<v8::Value> V8DeviceMotionEvent::initDeviceMotionEventCallback(const v8::Arguments& args) 167 { 168 DeviceMotionEvent* imp = V8DeviceMotionEvent::toNative(args.Holder()); 169 STRING_TO_V8PARAMETER_EXCEPTION_BLOCK(V8Parameter<>, type, args[0]); 170 bool bubbles = args[1]->BooleanValue(); 171 bool cancelable = args[2]->BooleanValue(); 172 RefPtr<DeviceMotionData::Acceleration> acceleration = readAccelerationArgument(args[3]); 173 RefPtr<DeviceMotionData::Acceleration> accelerationIncludingGravity = readAccelerationArgument(args[4]); 174 RefPtr<DeviceMotionData::RotationRate> rotationRate = readRotationRateArgument(args[5]); 175 bool intervalProvided = !isUndefinedOrNull(args[6]); 176 double interval = args[6]->NumberValue(); 177 RefPtr<DeviceMotionData> deviceMotionData = DeviceMotionData::create(acceleration, accelerationIncludingGravity, rotationRate, intervalProvided, interval); 178 imp->initDeviceMotionEvent(type, bubbles, cancelable, deviceMotionData.get()); 179 return v8::Handle<v8::Value>(); 180 } 181 182 } // namespace WebCore 183 184 #endif // ENABLE(DEVICE_ORIENTATION) 185
