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/*
* Copyright (C) 2012 Samsung Electronics
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "modules/vibration/NavigatorVibration.h"
#include "core/frame/Navigator.h"
#include "core/frame/Frame.h"
#include "core/page/PageVisibilityState.h"
#include "public/platform/Platform.h"
#include "public/platform/WebVibration.h"
namespace WebCore {
// Maximum number of entries in a vibration pattern.
const unsigned kVibrationPatternLengthMax = 99;
NavigatorVibration::NavigatorVibration(Page* page)
: PageLifecycleObserver(page)
, m_timerStart(this, &NavigatorVibration::timerStartFired)
, m_timerStop(this, &NavigatorVibration::timerStopFired)
, m_isVibrating(false)
{
}
NavigatorVibration::~NavigatorVibration()
{
if (m_isVibrating)
cancelVibration();
}
bool NavigatorVibration::vibrate(const VibrationPattern& pattern)
{
VibrationPattern sanitized = pattern;
size_t length = sanitized.size();
// If the pattern is too long then truncate it.
if (length > kVibrationPatternLengthMax) {
sanitized.shrink(kVibrationPatternLengthMax);
length = kVibrationPatternLengthMax;
}
// If any pattern entry is too long then truncate it.
for (size_t i = 0; i < length; ++i) {
if (sanitized[i] > blink::kVibrationDurationMax)
sanitized[i] = blink::kVibrationDurationMax;
}
// If the last item in the pattern is a pause then discard it.
if (length && !(length % 2))
sanitized.removeLast();
// Cancelling clears the stored pattern so do it before setting the new one.
if (m_isVibrating)
cancelVibration();
m_pattern = sanitized;
if (m_timerStart.isActive())
m_timerStart.stop();
if (!m_pattern.size())
return true;
if (m_pattern.size() == 1 && !m_pattern[0]) {
m_pattern.clear();
return true;
}
m_timerStart.startOneShot(0);
m_isVibrating = true;
return true;
}
void NavigatorVibration::cancelVibration()
{
m_pattern.clear();
if (m_isVibrating) {
blink::Platform::current()->cancelVibration();
m_isVibrating = false;
m_timerStop.stop();
}
}
void NavigatorVibration::timerStartFired(Timer<NavigatorVibration>* timer)
{
ASSERT_UNUSED(timer, timer == &m_timerStart);
if (m_pattern.size()) {
m_isVibrating = true;
blink::Platform::current()->vibrate(m_pattern[0]);
m_timerStop.startOneShot(m_pattern[0] / 1000.0);
m_pattern.remove(0);
}
}
void NavigatorVibration::timerStopFired(Timer<NavigatorVibration>* timer)
{
ASSERT_UNUSED(timer, timer == &m_timerStop);
if (m_pattern.isEmpty())
m_isVibrating = false;
if (m_pattern.size()) {
m_timerStart.startOneShot(m_pattern[0] / 1000.0);
m_pattern.remove(0);
}
}
void NavigatorVibration::pageVisibilityChanged()
{
if (page()->visibilityState() != PageVisibilityStateVisible)
cancelVibration();
}
void NavigatorVibration::didCommitLoad(Frame* frame)
{
// A new load has been committed, which means the current page will be
// unloaded. Cancel all running vibrations.
cancelVibration();
}
bool NavigatorVibration::vibrate(Navigator* navigator, unsigned time)
{
VibrationPattern pattern;
pattern.append(time);
return NavigatorVibration::vibrate(navigator, pattern);
}
bool NavigatorVibration::vibrate(Navigator* navigator, const VibrationPattern& pattern)
{
Page* page = navigator->frame()->page();
if (!page)
return false;
if (page->visibilityState() != PageVisibilityStateVisible)
return false;
return NavigatorVibration::from(page)->vibrate(pattern);
}
NavigatorVibration* NavigatorVibration::from(Page* page)
{
NavigatorVibration* navigatorVibration = static_cast<NavigatorVibration*>(Supplement<Page>::from(page, supplementName()));
if (!navigatorVibration) {
navigatorVibration = new NavigatorVibration(page);
Supplement<Page>::provideTo(page, supplementName(), adoptPtr(navigatorVibration));
}
return navigatorVibration;
}
const char* NavigatorVibration::supplementName()
{
return "NavigatorVibration";
}
} // namespace WebCore
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