pjs/widget/cocoa/nsIdleServiceX.mm

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Shawn Wilsher <me@shawnwilsher.com>
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsIdleServiceX.h"
#include "nsObjCExceptions.h"
#include "nsIServiceManager.h"
#import <Foundation/Foundation.h>
NS_IMPL_ISUPPORTS2(nsIdleServiceX, nsIIdleService, nsIdleService)
bool
nsIdleServiceX::PollIdleTime(PRUint32 *aIdleTime)
{
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;
kern_return_t rval;
mach_port_t masterPort;
rval = IOMasterPort(kIOMasterPortDefault, &masterPort);
if (rval != KERN_SUCCESS)
return false;
io_iterator_t hidItr;
rval = IOServiceGetMatchingServices(masterPort,
IOServiceMatching("IOHIDSystem"),
&hidItr);
if (rval != KERN_SUCCESS)
return false;
NS_ASSERTION(hidItr, "Our iterator is null, but it ought not to be!");
io_registry_entry_t entry = IOIteratorNext(hidItr);
NS_ASSERTION(entry, "Our IO Registry Entry is null, but it shouldn't be!");
IOObjectRelease(hidItr);
NSMutableDictionary *hidProps;
rval = IORegistryEntryCreateCFProperties(entry,
(CFMutableDictionaryRef*)&hidProps,
kCFAllocatorDefault, 0);
if (rval != KERN_SUCCESS)
return false;
NS_ASSERTION(hidProps, "HIDProperties is null, but no error was returned.");
[hidProps autorelease];
id idleObj = [hidProps objectForKey:@"HIDIdleTime"];
NS_ASSERTION([idleObj isKindOfClass: [NSData class]] ||
[idleObj isKindOfClass: [NSNumber class]],
"What we got for the idle object is not what we expect!");
uint64_t time;
if ([idleObj isKindOfClass: [NSData class]])
[idleObj getBytes: &time];
else
time = [idleObj unsignedLongLongValue];
IOObjectRelease(entry);
// convert to ms from ns
time /= 1000000;
if (time > PR_UINT32_MAX) // Overflow will occur
return false;
*aIdleTime = static_cast<PRUint32>(time);
return true;
NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(false);
}
bool
nsIdleServiceX::UsePollMode()
{
return true;
}