/*
* Copyright (C) 2009 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "Geolocation.h"
#include "V8Binding.h"
#include "V8CustomBinding.h"
#include "V8CustomPositionCallback.h"
#include "V8CustomPositionErrorCallback.h"
#include "V8Proxy.h"
using namespace std;
using namespace WTF;
namespace WebCore {
static const char* typeMismatchError = "TYPE_MISMATCH_ERR: DOM Exception 17";
static void throwTypeMismatchException()
{
V8Proxy::throwError(V8Proxy::GeneralError, typeMismatchError);
}
static PassRefPtr<PositionCallback> createPositionCallback(v8::Local<v8::Value> value, bool& succeeded)
{
succeeded = true;
// The spec specifies 'FunctionOnly' for this object.
if (!value->IsFunction()) {
succeeded = false;
throwTypeMismatchException();
return 0;
}
Frame* frame = V8Proxy::retrieveFrameForCurrentContext();
return V8CustomPositionCallback::create(value, frame);
}
static PassRefPtr<PositionErrorCallback> createPositionErrorCallback(v8::Local<v8::Value> value, bool& succeeded)
{
succeeded = true;
// Argument is optional (hence undefined is allowed), and null is allowed.
if (isUndefinedOrNull(value))
return 0;
// The spec specifies 'FunctionOnly' for this object.
if (!value->IsFunction()) {
succeeded = false;
throwTypeMismatchException();
return 0;
}
Frame* frame = V8Proxy::retrieveFrameForCurrentContext();
return V8CustomPositionErrorCallback::create(value, frame);
}
static PassRefPtr<PositionOptions> createPositionOptions(v8::Local<v8::Value> value, bool& succeeded)
{
succeeded = true;
// Create default options.
RefPtr<PositionOptions> options = PositionOptions::create();
// Argument is optional (hence undefined is allowed), and null is allowed.
if (isUndefinedOrNull(value)) {
// Use default options.
return options.release();
}
// Given the above test, this will always yield an object.
v8::Local<v8::Object> object = value->ToObject();
// For all three properties, we apply the following ...
// - If the getter or the property's valueOf method throws an exception, we
// quit so as not to risk overwriting the exception.
// - If the value is absent or undefined, we don't override the default.
v8::Local<v8::Value> enableHighAccuracyValue = object->Get(v8::String::New("enableHighAccuracy"));
if (enableHighAccuracyValue.IsEmpty()) {
succeeded = false;
return 0;
}
if (!enableHighAccuracyValue->IsUndefined()) {
v8::Local<v8::Boolean> enableHighAccuracyBoolean = enableHighAccuracyValue->ToBoolean();
if (enableHighAccuracyBoolean.IsEmpty()) {
succeeded = false;
return 0;
}
options->setEnableHighAccuracy(enableHighAccuracyBoolean->Value());
}
v8::Local<v8::Value> timeoutValue = object->Get(v8::String::New("timeout"));
if (timeoutValue.IsEmpty()) {
succeeded = false;
return 0;
}
if (!timeoutValue->IsUndefined()) {
v8::Local<v8::Number> timeoutNumber = timeoutValue->ToNumber();
if (timeoutNumber.IsEmpty()) {
succeeded = false;
return 0;
}
double timeoutDouble = timeoutNumber->Value();
// V8 does not export a public symbol for infinity, so we must use a
// platform type. On Android, it seems that V8 uses 0xf70f000000000000,
// which is the standard way to represent infinity in a double. However,
// numeric_limits<double>::infinity uses the system HUGE_VAL, which is
// different. Therefore we test using isinf() and check that the value
// is positive, which seems to handle things correctly.
// If the value is infinity, there's nothing to do.
if (!(isinf(timeoutDouble) && timeoutDouble > 0)) {
v8::Local<v8::Int32> timeoutInt32 = timeoutValue->ToInt32();
if (timeoutInt32.IsEmpty()) {
succeeded = false;
return 0;
}
// Wrap to int32 and force non-negative to match behavior of window.setTimeout.
options->setTimeout(max(0, timeoutInt32->Value()));
}
}
v8::Local<v8::Value> maximumAgeValue = object->Get(v8::String::New("maximumAge"));
if (maximumAgeValue.IsEmpty()) {
succeeded = false;
return 0;
}
if (!maximumAgeValue->IsUndefined()) {
v8::Local<v8::Number> maximumAgeNumber = maximumAgeValue->ToNumber();
if (maximumAgeNumber.IsEmpty()) {
succeeded = false;
return 0;
}
double maximumAgeDouble = maximumAgeNumber->Value();
if (isinf(maximumAgeDouble) && maximumAgeDouble > 0) {
// If the value is infinity, clear maximumAge.
options->clearMaximumAge();
} else {
v8::Local<v8::Int32> maximumAgeInt32 = maximumAgeValue->ToInt32();
if (maximumAgeInt32.IsEmpty()) {
succeeded = false;
return 0;
}
// Wrap to int32 and force non-negative to match behavior of window.setTimeout.
options->setMaximumAge(max(0, maximumAgeInt32->Value()));
}
}
return options.release();
}
CALLBACK_FUNC_DECL(GeolocationGetCurrentPosition)
{
INC_STATS("DOM.Geolocation.getCurrentPosition()");
bool succeeded = false;
RefPtr<PositionCallback> positionCallback = createPositionCallback(args[0], succeeded);
if (!succeeded)
return v8::Undefined();
ASSERT(positionCallback);
RefPtr<PositionErrorCallback> positionErrorCallback = createPositionErrorCallback(args[1], succeeded);
if (!succeeded)
return v8::Undefined();
RefPtr<PositionOptions> positionOptions = createPositionOptions(args[2], succeeded);
if (!succeeded)
return v8::Undefined();
ASSERT(positionOptions);
Geolocation* geolocation = V8DOMWrapper::convertToNativeObject<Geolocation>(V8ClassIndex::GEOLOCATION, args.Holder());
geolocation->getCurrentPosition(positionCallback.release(), positionErrorCallback.release(), positionOptions.release());
return v8::Undefined();
}
CALLBACK_FUNC_DECL(GeolocationWatchPosition)
{
INC_STATS("DOM.Geolocation.watchPosition()");
bool succeeded = false;
RefPtr<PositionCallback> positionCallback = createPositionCallback(args[0], succeeded);
if (!succeeded)
return v8::Undefined();
ASSERT(positionCallback);
RefPtr<PositionErrorCallback> positionErrorCallback = createPositionErrorCallback(args[1], succeeded);
if (!succeeded)
return v8::Undefined();
RefPtr<PositionOptions> positionOptions = createPositionOptions(args[2], succeeded);
if (!succeeded)
return v8::Undefined();
ASSERT(positionOptions);
Geolocation* geolocation = V8DOMWrapper::convertToNativeObject<Geolocation>(V8ClassIndex::GEOLOCATION, args.Holder());
int watchId = geolocation->watchPosition(positionCallback.release(), positionErrorCallback.release(), positionOptions.release());
return v8::Number::New(watchId);
}
} // namespace WebCore