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      1 /*
      2  * Copyright 2010, The Android Open Source Project
      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 "modules/device_orientation/DeviceOrientationEvent.h"
     28 
     29 #include "modules/device_orientation/DeviceOrientationData.h"
     30 
     31 namespace blink {
     32 
     33 DeviceOrientationEvent::~DeviceOrientationEvent()
     34 {
     35 }
     36 
     37 DeviceOrientationEvent::DeviceOrientationEvent()
     38     : m_orientation(DeviceOrientationData::create())
     39 {
     40 }
     41 
     42 DeviceOrientationEvent::DeviceOrientationEvent(const AtomicString& eventType, DeviceOrientationData* orientation)
     43     : Event(eventType, false, false) // Can't bubble, not cancelable
     44     , m_orientation(orientation)
     45 {
     46 }
     47 
     48 void DeviceOrientationEvent::initDeviceOrientationEvent(const AtomicString& type, bool bubbles, bool cancelable, DeviceOrientationData* orientation)
     49 {
     50     if (dispatched())
     51         return;
     52 
     53     initEvent(type, bubbles, cancelable);
     54     m_orientation = orientation;
     55 }
     56 
     57 double DeviceOrientationEvent::alpha(bool& isNull) const
     58 {
     59     if (m_orientation->canProvideAlpha())
     60         return m_orientation->alpha();
     61 
     62     isNull = true;
     63     return 0;
     64 }
     65 
     66 double DeviceOrientationEvent::beta(bool& isNull) const
     67 {
     68     if (m_orientation->canProvideBeta())
     69         return m_orientation->beta();
     70 
     71     isNull = true;
     72     return 0;
     73 }
     74 
     75 double DeviceOrientationEvent::gamma(bool& isNull) const
     76 {
     77     if (m_orientation->canProvideGamma())
     78         return m_orientation->gamma();
     79 
     80     isNull = true;
     81     return 0;
     82 }
     83 
     84 bool DeviceOrientationEvent::absolute(bool& isNull) const
     85 {
     86     if (m_orientation->canProvideAbsolute())
     87         return m_orientation->absolute();
     88 
     89     isNull = true;
     90     return 0;
     91 }
     92 
     93 const AtomicString& DeviceOrientationEvent::interfaceName() const
     94 {
     95     return EventNames::DeviceOrientationEvent;
     96 }
     97 
     98 void DeviceOrientationEvent::trace(Visitor* visitor)
     99 {
    100     visitor->trace(m_orientation);
    101     Event::trace(visitor);
    102 }
    103 
    104 } // namespace blink
    105