/platform/external/webkit/WebCore/bindings/js/JSGeolocationCustom.cpp
https://github.com/aharish/totoro-gb-opensource-update2 · C++ · 180 lines · 112 code · 27 blank · 41 comment · 26 complexity · 23c52907f58464b4a07e465d1079c991 MD5 · raw file
- /*
- * Copyright (C) 2008 Apple 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:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. 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.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 APPLE INC. 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 "JSGeolocation.h"
- #include "DOMWindow.h"
- #include "ExceptionCode.h"
- #include "Geolocation.h"
- #include "GeolocationService.h"
- #include "JSCustomPositionCallback.h"
- #include "JSCustomPositionErrorCallback.h"
- #include "JSDOMWindow.h"
- #include "PositionOptions.h"
- #include <runtime/InternalFunction.h>
- using namespace JSC;
- using namespace std;
- namespace WebCore {
- static PassRefPtr<PositionCallback> createPositionCallback(ExecState* exec, JSDOMGlobalObject* globalObject, JSValue value)
- {
- // The spec specifies 'FunctionOnly' for this object.
- if (!value.inherits(&InternalFunction::info)) {
- setDOMException(exec, TYPE_MISMATCH_ERR);
- return 0;
- }
- JSObject* object = asObject(value);
- return JSCustomPositionCallback::create(object, globalObject);
- }
- static PassRefPtr<PositionErrorCallback> createPositionErrorCallback(ExecState* exec, JSDOMGlobalObject* globalObject, JSValue value)
- {
- // Argument is optional (hence undefined is allowed), and null is allowed.
- if (value.isUndefinedOrNull())
- return 0;
- // The spec specifies 'FunctionOnly' for this object.
- if (!value.inherits(&InternalFunction::info)) {
- setDOMException(exec, TYPE_MISMATCH_ERR);
- return 0;
- }
- JSObject* object = asObject(value);
- return JSCustomPositionErrorCallback::create(object, globalObject);
- }
- static PassRefPtr<PositionOptions> createPositionOptions(ExecState* exec, JSValue value)
- {
- // Create default options.
- RefPtr<PositionOptions> options = PositionOptions::create();
- // Argument is optional (hence undefined is allowed), and null is allowed.
- if (value.isUndefinedOrNull()) {
- // Use default options.
- return options.release();
- }
- // Given the above test, this will always yield an object.
- JSObject* object = value.toObject(exec);
- // 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.
- JSValue enableHighAccuracyValue = object->get(exec, Identifier(exec, "enableHighAccuracy"));
- if (exec->hadException())
- return 0;
- if (!enableHighAccuracyValue.isUndefined()) {
- options->setEnableHighAccuracy(enableHighAccuracyValue.toBoolean(exec));
- if (exec->hadException())
- return 0;
- }
- JSValue timeoutValue = object->get(exec, Identifier(exec, "timeout"));
- if (exec->hadException())
- return 0;
- if (!timeoutValue.isUndefined()) {
- double timeoutNumber = timeoutValue.toNumber(exec);
- if (exec->hadException())
- return 0;
- // If the value is positive infinity, there's nothing to do.
- if (!(isinf(timeoutNumber) && (timeoutNumber > 0))) {
- // Wrap to int32 and force non-negative to match behavior of window.setTimeout.
- options->setTimeout(max(0, timeoutValue.toInt32(exec)));
- if (exec->hadException())
- return 0;
- }
- }
- JSValue maximumAgeValue = object->get(exec, Identifier(exec, "maximumAge"));
- if (exec->hadException())
- return 0;
- if (!maximumAgeValue.isUndefined()) {
- double maximumAgeNumber = maximumAgeValue.toNumber(exec);
- if (exec->hadException())
- return 0;
- if (isinf(maximumAgeNumber) && (maximumAgeNumber > 0)) {
- // If the value is positive infinity, clear maximumAge.
- options->clearMaximumAge();
- } else {
- // Wrap to int32 and force non-negative to match behavior of window.setTimeout.
- options->setMaximumAge(max(0, maximumAgeValue.toInt32(exec)));
- if (exec->hadException())
- return 0;
- }
- }
- return options.release();
- }
- JSValue JSGeolocation::getCurrentPosition(ExecState* exec, const ArgList& args)
- {
- // Arguments: PositionCallback, (optional)PositionErrorCallback, (optional)PositionOptions
- RefPtr<PositionCallback> positionCallback = createPositionCallback(exec, static_cast<JSDOMGlobalObject*>(exec->lexicalGlobalObject()), args.at(0));
- if (exec->hadException())
- return jsUndefined();
- ASSERT(positionCallback);
- RefPtr<PositionErrorCallback> positionErrorCallback = createPositionErrorCallback(exec, static_cast<JSDOMGlobalObject*>(exec->lexicalGlobalObject()), args.at(1));
- if (exec->hadException())
- return jsUndefined();
- RefPtr<PositionOptions> positionOptions = createPositionOptions(exec, args.at(2));
- if (exec->hadException())
- return jsUndefined();
- ASSERT(positionOptions);
- m_impl->getCurrentPosition(positionCallback.release(), positionErrorCallback.release(), positionOptions.release());
- return jsUndefined();
- }
- JSValue JSGeolocation::watchPosition(ExecState* exec, const ArgList& args)
- {
- // Arguments: PositionCallback, (optional)PositionErrorCallback, (optional)PositionOptions
- RefPtr<PositionCallback> positionCallback = createPositionCallback(exec, static_cast<JSDOMGlobalObject*>(exec->lexicalGlobalObject()), args.at(0));
- if (exec->hadException())
- return jsUndefined();
- ASSERT(positionCallback);
- RefPtr<PositionErrorCallback> positionErrorCallback = createPositionErrorCallback(exec, static_cast<JSDOMGlobalObject*>(exec->lexicalGlobalObject()), args.at(1));
- if (exec->hadException())
- return jsUndefined();
- RefPtr<PositionOptions> positionOptions = createPositionOptions(exec, args.at(2));
- if (exec->hadException())
- return jsUndefined();
- ASSERT(positionOptions);
- int watchID = m_impl->watchPosition(positionCallback.release(), positionErrorCallback.release(), positionOptions.release());
- return jsNumber(exec, watchID);
- }
- } // namespace WebCore