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      1 /*
      2  * Copyright (C) 2010 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
      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 "V8DeviceOrientationEvent.h"
     28 
     29 #if ENABLE(DEVICE_ORIENTATION)
     30 
     31 #include "DeviceOrientation.h"
     32 #include "V8Binding.h"
     33 #include "V8BindingMacros.h"
     34 #include "V8Proxy.h"
     35 
     36 #include <v8.h>
     37 
     38 namespace WebCore {
     39 
     40 v8::Handle<v8::Value> V8DeviceOrientationEvent::alphaAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
     41 {
     42     INC_STATS("DOM.DeviceOrientationEvent.alpha._get");
     43     v8::Handle<v8::Object> holder = info.Holder();
     44     DeviceOrientationEvent* imp = V8DeviceOrientationEvent::toNative(holder);
     45     if (!imp->orientation()->canProvideAlpha())
     46         return v8::Null();
     47     return v8::Number::New(imp->orientation()->alpha());
     48 }
     49 
     50 v8::Handle<v8::Value> V8DeviceOrientationEvent::betaAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
     51 {
     52     INC_STATS("DOM.DeviceOrientationEvent.beta._get");
     53     v8::Handle<v8::Object> holder = info.Holder();
     54     DeviceOrientationEvent* imp = V8DeviceOrientationEvent::toNative(holder);
     55     if (!imp->orientation()->canProvideBeta())
     56         return v8::Null();
     57     return v8::Number::New(imp->orientation()->beta());
     58 }
     59 
     60 v8::Handle<v8::Value> V8DeviceOrientationEvent::gammaAccessorGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
     61 {
     62     INC_STATS("DOM.DeviceOrientationEvent.gamma._get");
     63     v8::Handle<v8::Object> holder = info.Holder();
     64     DeviceOrientationEvent* imp = V8DeviceOrientationEvent::toNative(holder);
     65     if (!imp->orientation()->canProvideGamma())
     66         return v8::Null();
     67     return v8::Number::New(imp->orientation()->gamma());
     68 }
     69 
     70 v8::Handle<v8::Value> V8DeviceOrientationEvent::initDeviceOrientationEventCallback(const v8::Arguments& args)
     71 {
     72     DeviceOrientationEvent* imp = V8DeviceOrientationEvent::toNative(args.Holder());
     73     STRING_TO_V8PARAMETER_EXCEPTION_BLOCK(V8Parameter<>, type, args[0]);
     74     bool bubbles = args[1]->BooleanValue();
     75     bool cancelable = args[2]->BooleanValue();
     76     // If alpha, beta or gamma are null or undefined, mark them as not provided.
     77     // Otherwise, use the standard JavaScript conversion.
     78     bool alphaProvided = !isUndefinedOrNull(args[3]);
     79     double alpha = args[3]->NumberValue();
     80     bool betaProvided = !isUndefinedOrNull(args[4]);
     81     double beta = args[4]->NumberValue();
     82     bool gammaProvided = !isUndefinedOrNull(args[5]);
     83     double gamma = args[5]->NumberValue();
     84     RefPtr<DeviceOrientation> orientation = DeviceOrientation::create(alphaProvided, alpha, betaProvided, beta, gammaProvided, gamma);
     85     imp->initDeviceOrientationEvent(type, bubbles, cancelable, orientation.get());
     86     return v8::Handle<v8::Value>();
     87 }
     88 
     89 } // namespace WebCore
     90 
     91 #endif // ENABLE(DEVICE_ORIENTATION)
     92