/*

        File: BatteryInfoPlugIn.m

    Abstract: BatteryInfoPlugin class.

     Version: 1.0

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*/

/* It's highly recommended to use CGL macros instead of changing the current context for plug-ins that perform OpenGL rendering */

#import <OpenGL/CGLMacro.h>

#import <IOKit/ps/IOPowerSources.h>

#import <IOKit/ps/IOPSKeys.h>

#import "BatteryInfoPlugIn.h"

#define kQCPlugIn_Name              @"Battery Info"

#define kQCPlugIn_Description       @"This patch returns information about the primary battery."

@implementation BatteryInfoPlugIn

/* We need to declare the input / output properties as dynamic as Quartz Composer will handle their implementation */

@dynamic outputInstalled, outputConnected, outputCharging, outputCurrent, outputVoltage, outputCapacity, outputMaxCapacity;

+ (NSDictionary*) attributes

{

    /* Return the attributes of this plug-in */

    return [NSDictionary dictionaryWithObjectsAndKeys:kQCPlugIn_Name, QCPlugInAttributeNameKey, kQCPlugIn_Description, QCPlugInAttributeDescriptionKey, nil];

}

+ (NSDictionary*) attributesForPropertyPortWithKey:(NSString*)key

{

    /* Return the attributes for the plug-in property ports */

    if([key isEqualToString:@"outputInstalled"])

    return [NSDictionary dictionaryWithObject:@"Installed" forKey:QCPortAttributeNameKey];

    if([key isEqualToString:@"outputCharging"])

    return [NSDictionary dictionaryWithObject:@"Charging" forKey:QCPortAttributeNameKey];

    if([key isEqualToString:@"outputConnected"])

    return [NSDictionary dictionaryWithObject:@"Power Connected" forKey:QCPortAttributeNameKey];

    if([key isEqualToString:@"outputCurrent"])

    return [NSDictionary dictionaryWithObject:@"Current (mA)" forKey:QCPortAttributeNameKey];

    if([key isEqualToString:@"outputVoltage"])

    return [NSDictionary dictionaryWithObject:@"Voltage (mV)" forKey:QCPortAttributeNameKey];

    if([key isEqualToString:@"outputCapacity"])

    return [NSDictionary dictionaryWithObject:@"Capacity" forKey:QCPortAttributeNameKey];

    if([key isEqualToString:@"outputMaxCapacity"])

    return [NSDictionary dictionaryWithObject:@"Maximum Capacity" forKey:QCPortAttributeNameKey];

    return nil;

}

+ (QCPlugInExecutionMode) executionMode

{

    /* This plug-in is a provider (it provides data from an external source) */

    return kQCPlugInExecutionModeProvider;

}

+ (QCPlugInTimeMode) timeMode

{

    /* This plug-in does not depend on the time (time parameter is completely ignored in the -execute:atTime:withArguments: method) but we need idling */

    return kQCPlugInTimeModeIdle;

}

@end

@implementation BatteryInfoPlugIn (Execution)

- (BOOL) startExecution:(id<QCPlugInContext>)context

{

    /* Setup */

    return YES;

}

- (BOOL) execute:(id<QCPlugInContext>)context atTime:(NSTimeInterval)time withArguments:(NSDictionary*)arguments

{

    CFTypeRef               info;

    CFArrayRef              list;

    CFDictionaryRef         battery;

    info = IOPSCopyPowerSourcesInfo();

    if(info == NULL)

    return NO;

    list = IOPSCopyPowerSourcesList(info);

    if(list == NULL) {

        CFRelease(info);

        return NO;

    }

    if(CFArrayGetCount(list) && (battery = IOPSGetPowerSourceDescription(info, CFArrayGetValueAtIndex(list, 0)))) {

        self.outputInstalled = [[(NSDictionary*)battery objectForKey:@kIOPSIsPresentKey] boolValue];

        self.outputConnected = [(NSString*)[(NSDictionary*)battery objectForKey:@kIOPSPowerSourceStateKey] isEqualToString:@kIOPSACPowerValue];

        self.outputCharging = [[(NSDictionary*)battery objectForKey:@kIOPSIsChargingKey] boolValue];

        self.outputCurrent = [[(NSDictionary*)battery objectForKey:@kIOPSCurrentKey] doubleValue];

        self.outputVoltage = [[(NSDictionary*)battery objectForKey:@kIOPSVoltageKey] doubleValue];

        self.outputCapacity = [[(NSDictionary*)battery objectForKey:@kIOPSCurrentCapacityKey] doubleValue];

        self.outputMaxCapacity = [[(NSDictionary*)battery objectForKey:@kIOPSMaxCapacityKey] doubleValue];

    }

    else {

        self.outputInstalled = NO;

        self.outputConnected = NO;

        self.outputCharging = NO;

        self.outputCurrent = 0.0;

        self.outputVoltage = 0.0;

        self.outputCapacity = 0.0;

        self.outputMaxCapacity = 0.0;

    }

    CFRelease(list);

    CFRelease(info);

    return YES;

}

- (void) stopExecution:(id<QCPlugInContext>)context

{

    /* Clean up*/

}

@end