code.vuplus.com Git - vuplus_webkit/blob - Source/WebCore/bindings/v8/custom/V8DeviceMotionEventCustom.cpp

   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)