1 /*

     2  * Copyright (C) 2009 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  * 1. Redistributions of source code must retain the above copyright

     8  *    notice, this list of conditions and the following disclaimer.

     9  * 2. 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 APPLE INC. AND ITS CONTRIBUTORS ``AS IS''

    14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

    15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS

    17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

    23  * THE POSSIBILITY OF SUCH DAMAGE.

    24  */

    25 

    26 #include "config.h"

    27 #include "GeolocationController.h"

    28 #include "GeolocationPosition.h"

    29 

    30 #if ENABLE(CLIENT_BASED_GEOLOCATION)

    31 

    32 #include "GeolocationControllerClient.h"

    33 

    34 namespace WebCore {

    35 

    36 GeolocationController::GeolocationController(Page* page, GeolocationControllerClient* client)

    37     : m_page(page)

    38     , m_client(client)

    39 {

    40 }

    41 

    42 GeolocationController::~GeolocationController()

    43 {

    44     if (m_client)

    45         m_client->geolocationDestroyed();

    46 }

    47 

    48 void GeolocationController::addObserver(Geolocation* observer)

    49 {

    50     // This may be called multiple times with the same observer, though removeObserver()

    51     // is called only once with each.

    52     if (m_observers.contains(observer))

    53         return;

    54 

    55     bool wasEmpty = m_observers.isEmpty();

    56     m_observers.add(observer);

    57     if (wasEmpty && m_client)

    58         m_client->startUpdating();

    59 }

    60 

    61 void GeolocationController::removeObserver(Geolocation* observer)

    62 {

    63     if (!m_observers.contains(observer))

    64         return;

    65 

    66     m_observers.remove(observer);

    67     if (m_observers.isEmpty() && m_client)

    68         m_client->stopUpdating();

    69 }

    70 

    71 void GeolocationController::positionChanged(GeolocationPosition* position)

    72 {

    73     m_lastPosition = position;

    74     Vector<RefPtr<Geolocation> > observersVector;

    75     copyToVector(m_observers, observersVector);

    76     for (size_t i = 0; i < observersVector.size(); ++i)

    77         observersVector[i]->positionChanged();

    78 }

    79 

    80 void GeolocationController::errorOccurred(GeolocationError* error)

    81 {

    82     Vector<RefPtr<Geolocation> > observersVector;

    83     copyToVector(m_observers, observersVector);

    84     for (size_t i = 0; i < observersVector.size(); ++i)

    85         observersVector[i]->setError(error);

    86 }

    87 

    88 GeolocationPosition* GeolocationController::lastPosition()

    89 {

    90     if (m_lastPosition.get())

    91         return m_lastPosition.get();

    92 

    93     if (!m_client)

    94         return 0;

    95 

    96     return m_client->lastPosition();

    97 }

    98 

    99 } // namespace WebCore

   100 

   101 #endif // ENABLE(CLIENT_BASED_GEOLOCATION)