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 28#if ENABLE(DEVICE_ORIENTATION) 29 30#include "JSDeviceMotionEvent.h" 31 32#include "DeviceMotionData.h" 33#include "DeviceMotionEvent.h" 34#include <runtime/ObjectConstructor.h> 35 36using namespace JSC; 37 38namespace WebCore { 39 40static PassRefPtr<DeviceMotionData::Acceleration> readAccelerationArgument(JSValue value, ExecState* exec) 41{ 42 if (value.isUndefinedOrNull()) 43 return 0; 44 45 // Given the above test, this will always yield an object. 46 JSObject* object = value.toObject(exec); 47 48 JSValue xValue = object->get(exec, Identifier(exec, "x")); 49 if (exec->hadException()) 50 return 0; 51 bool canProvideX = !xValue.isUndefinedOrNull(); 52 double x = xValue.toNumber(exec); 53 if (exec->hadException()) 54 return 0; 55 56 JSValue yValue = object->get(exec, Identifier(exec, "y")); 57 if (exec->hadException()) 58 return 0; 59 bool canProvideY = !yValue.isUndefinedOrNull(); 60 double y = yValue.toNumber(exec); 61 if (exec->hadException()) 62 return 0; 63 64 JSValue zValue = object->get(exec, Identifier(exec, "z")); 65 if (exec->hadException()) 66 return 0; 67 bool canProvideZ = !zValue.isUndefinedOrNull(); 68 double z = zValue.toNumber(exec); 69 if (exec->hadException()) 70 return 0; 71 72 if (!canProvideX && !canProvideY && !canProvideZ) 73 return 0; 74 75 return DeviceMotionData::Acceleration::create(canProvideX, x, canProvideY, y, canProvideZ, z); 76} 77 78static PassRefPtr<DeviceMotionData::RotationRate> readRotationRateArgument(JSValue value, ExecState* exec) 79{ 80 if (value.isUndefinedOrNull()) 81 return 0; 82 83 // Given the above test, this will always yield an object. 84 JSObject* object = value.toObject(exec); 85 86 JSValue alphaValue = object->get(exec, Identifier(exec, "alpha")); 87 if (exec->hadException()) 88 return 0; 89 bool canProvideAlpha = !alphaValue.isUndefinedOrNull(); 90 double alpha = alphaValue.toNumber(exec); 91 if (exec->hadException()) 92 return 0; 93 94 JSValue betaValue = object->get(exec, Identifier(exec, "beta")); 95 if (exec->hadException()) 96 return 0; 97 bool canProvideBeta = !betaValue.isUndefinedOrNull(); 98 double beta = betaValue.toNumber(exec); 99 if (exec->hadException()) 100 return 0; 101 102 JSValue gammaValue = object->get(exec, Identifier(exec, "gamma")); 103 if (exec->hadException()) 104 return 0; 105 bool canProvideGamma = !gammaValue.isUndefinedOrNull(); 106 double gamma = gammaValue.toNumber(exec); 107 if (exec->hadException()) 108 return 0; 109 110 if (!canProvideAlpha && !canProvideBeta && !canProvideGamma) 111 return 0; 112 113 return DeviceMotionData::RotationRate::create(canProvideAlpha, alpha, canProvideBeta, beta, canProvideGamma, gamma); 114} 115 116static JSObject* createAccelerationObject(const DeviceMotionData::Acceleration* acceleration, ExecState* exec) 117{ 118 JSObject* object = constructEmptyObject(exec); 119 object->putDirect(exec->vm(), Identifier(exec, "x"), acceleration->canProvideX() ? jsNumber(acceleration->x()) : jsNull()); 120 object->putDirect(exec->vm(), Identifier(exec, "y"), acceleration->canProvideY() ? jsNumber(acceleration->y()) : jsNull()); 121 object->putDirect(exec->vm(), Identifier(exec, "z"), acceleration->canProvideZ() ? jsNumber(acceleration->z()) : jsNull()); 122 return object; 123} 124 125static JSObject* createRotationRateObject(const DeviceMotionData::RotationRate* rotationRate, ExecState* exec) 126{ 127 JSObject* object = constructEmptyObject(exec); 128 object->putDirect(exec->vm(), Identifier(exec, "alpha"), rotationRate->canProvideAlpha() ? jsNumber(rotationRate->alpha()) : jsNull()); 129 object->putDirect(exec->vm(), Identifier(exec, "beta"), rotationRate->canProvideBeta() ? jsNumber(rotationRate->beta()) : jsNull()); 130 object->putDirect(exec->vm(), Identifier(exec, "gamma"), rotationRate->canProvideGamma() ? jsNumber(rotationRate->gamma()) : jsNull()); 131 return object; 132} 133 134JSValue JSDeviceMotionEvent::acceleration(ExecState* exec) const 135{ 136 DeviceMotionEvent* imp = static_cast<DeviceMotionEvent*>(impl()); 137 if (!imp->deviceMotionData()->acceleration()) 138 return jsNull(); 139 return createAccelerationObject(imp->deviceMotionData()->acceleration(), exec); 140} 141 142JSValue JSDeviceMotionEvent::accelerationIncludingGravity(ExecState* exec) const 143{ 144 DeviceMotionEvent* imp = static_cast<DeviceMotionEvent*>(impl()); 145 if (!imp->deviceMotionData()->accelerationIncludingGravity()) 146 return jsNull(); 147 return createAccelerationObject(imp->deviceMotionData()->accelerationIncludingGravity(), exec); 148} 149 150JSValue JSDeviceMotionEvent::rotationRate(ExecState* exec) const 151{ 152 DeviceMotionEvent* imp = static_cast<DeviceMotionEvent*>(impl()); 153 if (!imp->deviceMotionData()->rotationRate()) 154 return jsNull(); 155 return createRotationRateObject(imp->deviceMotionData()->rotationRate(), exec); 156} 157 158JSValue JSDeviceMotionEvent::interval(ExecState*) const 159{ 160 DeviceMotionEvent* imp = static_cast<DeviceMotionEvent*>(impl()); 161 if (!imp->deviceMotionData()->canProvideInterval()) 162 return jsNull(); 163 return jsNumber(imp->deviceMotionData()->interval()); 164} 165 166JSValue JSDeviceMotionEvent::initDeviceMotionEvent(ExecState* exec) 167{ 168 const String type = exec->argument(0).toString(exec)->value(exec); 169 bool bubbles = exec->argument(1).toBoolean(exec); 170 bool cancelable = exec->argument(2).toBoolean(exec); 171 172 // If any of the parameters are null or undefined, mark them as not provided. 173 // Otherwise, use the standard JavaScript conversion. 174 RefPtr<DeviceMotionData::Acceleration> acceleration = readAccelerationArgument(exec->argument(3), exec); 175 if (exec->hadException()) 176 return jsUndefined(); 177 178 RefPtr<DeviceMotionData::Acceleration> accelerationIncludingGravity = readAccelerationArgument(exec->argument(4), exec); 179 if (exec->hadException()) 180 return jsUndefined(); 181 182 RefPtr<DeviceMotionData::RotationRate> rotationRate = readRotationRateArgument(exec->argument(5), exec); 183 if (exec->hadException()) 184 return jsUndefined(); 185 186 bool intervalProvided = !exec->argument(6).isUndefinedOrNull(); 187 double interval = exec->argument(6).toNumber(exec); 188 RefPtr<DeviceMotionData> deviceMotionData = DeviceMotionData::create(acceleration, accelerationIncludingGravity, rotationRate, intervalProvided, interval); 189 DeviceMotionEvent* imp = static_cast<DeviceMotionEvent*>(impl()); 190 imp->initDeviceMotionEvent(type, bubbles, cancelable, deviceMotionData.get()); 191 return jsUndefined(); 192} 193 194} // namespace WebCore 195 196#endif // ENABLE(DEVICE_ORIENTATION) 197