WebDeviceOrientationClient.mm   [plain text]

/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
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* modification, are permitted provided that the following conditions
* are met:
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* * Redistributions in binary form must reproduce the above copyright
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* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``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
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*/

#import "WebDeviceOrientationClient.h"

#import "WebDeviceOrientationInternal.h"
#import "WebDeviceOrientationProvider.h"
#import "WebViewInternal.h"
#import <wtf/ObjCRuntimeExtras.h>

using namespace WebCore;

WebDeviceOrientationClient::WebDeviceOrientationClient(WebView* webView)
: m_webView(webView)
, m_controller(0)
{
}

void WebDeviceOrientationClient::setController(DeviceOrientationController* controller)
{
// This is called by the Page constructor before our WebView has the provider set up.
// MemoryCache the controller for later use.
m_controller = controller;
}

void WebDeviceOrientationClient::startUpdating()
{
[getProvider() startUpdating];
}

void WebDeviceOrientationClient::stopUpdating()
{
[getProvider() stopUpdating];
}

DeviceOrientationData* WebDeviceOrientationClient::lastOrientation() const
{
return core([getProvider() lastOrientation]);
}

void WebDeviceOrientationClient::deviceOrientationControllerDestroyed()
{
delete this;
}

id<WebDeviceOrientationProvider> WebDeviceOrientationClient::getProvider() const
{
if (!m_provider) {
m_provider = [m_webView _deviceOrientationProvider];
if ([m_provider respondsToSelector:@selector(setController:)])
wtfObjCMsgSend<void>(m_provider, @selector(setController:), m_controller);
}
return m_provider;
}