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-rw-r--r--widget/cocoa/nsUserIdleServiceX.mm60
1 files changed, 60 insertions, 0 deletions
diff --git a/widget/cocoa/nsUserIdleServiceX.mm b/widget/cocoa/nsUserIdleServiceX.mm
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+++ b/widget/cocoa/nsUserIdleServiceX.mm
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsUserIdleServiceX.h"
+#include "nsObjCExceptions.h"
+#import <Foundation/Foundation.h>
+
+bool nsUserIdleServiceX::PollIdleTime(uint32_t* aIdleTime) {
+ NS_OBJC_BEGIN_TRY_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 length:sizeof(time)];
+ else
+ time = [idleObj unsignedLongLongValue];
+
+ IOObjectRelease(entry);
+
+ // convert to ms from ns
+ time /= 1000000;
+ if (time > UINT32_MAX) // Overflow will occur
+ return false;
+
+ *aIdleTime = static_cast<uint32_t>(time);
+
+ return true;
+
+ NS_OBJC_END_TRY_BLOCK_RETURN(false);
+}