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/** Implementation of DKSignal (encapsulation of D-Bus signal information).
Copyright (C) 2010 Free Software Foundation, Inc.
Written by: Niels Grewe <niels.grewe@halbordnung.de>
Created: July 2010
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser 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 Lesser General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02111 USA.
*/
#import "DKSignal.h"
#import "DKArgument.h"
#import <Foundation/NSArray.h>
#import <Foundation/NSDebug.h>
#import <Foundation/NSDictionary.h>
#import <Foundation/NSException.h>
#import <Foundation/NSNull.h>
#import <Foundation/NSString.h>
#import "DBusKit/DKNotificationCenter.h"
#import "DKProxy+Private.h"
#import "DKEndpoint.h"
#include <dbus/dbus.h>
@interface DKNotificationCenter (Private)
- (void)_registerSignal: (DKSignal*)signal;
@end
@implementation DKSignal
- (id) initWithName: (NSString*)aName
parent: (id)aParent
{
if (nil == (self = [super initWithName: aName
parent: aParent]))
{
return nil;
}
if (0 == [name length])
{
[self release];
return nil;
}
args = [NSMutableArray new];
return self;
}
- (void)addArgument: (DKArgument*)argument
direction: (NSString*)direction
{
if (nil == argument)
{
NSDebugMLog(@"Ignoring nil argument");
return;
}
if ((direction == nil) || [direction isEqualToString: kDKArgumentDirectionOut])
{
[args addObject: argument];
}
else
{
NSDebugMLog(@"Ignoring argument with invalid direction '%@'.", direction);
}
}
- (void)setArguments: (NSMutableArray*)newArgs
{
ASSIGN(args,newArgs);
[args makeObjectsPerformSelector: @selector(setParent:) withObject: self];
}
- (id)copyWithZone: (NSZone*)zone
{
DKSignal *newNode = [super copyWithZone: zone];
NSMutableArray *newArgs = nil;
newArgs = [[NSMutableArray allocWithZone: zone] initWithArray: args
copyItems: YES];
[newNode setArguments: newArgs];
[newArgs release];
return newNode;
}
- (NSString*)notificationName
{
return [annotations objectForKey: @"org.gnustep.openstep.notification"];
}
- (BOOL)isStub
{
return [[annotations objectForKey: @"org.gnustep.dbuskit.signal.stub"] boolValue];
}
- (void)registerWithNotificationCenter: (DKNotificationCenter*)center
{
[center _registerSignal: self];
}
- (void)registerWithNotificationCenter
{
DKProxy *theProxy = [self proxyParent];
DKNotificationCenter *theCenter = nil;
if (nil == theProxy)
{
return;
}
theCenter = [DKNotificationCenter centerForBusType: [[theProxy _endpoint] DBusBusType]];
[self registerWithNotificationCenter: theCenter];
}
- (NSDictionary*)userInfoFromIterator: (DBusMessageIter*)iter
{
NSUInteger numArgs = [args count];
NSMutableDictionary *userInfo = [[NSMutableDictionary new] autorelease];
NSUInteger index = 0;
while (index < (numArgs))
{
NSString *key = [NSString stringWithFormat: @"arg%lu", index];
DKArgument *arg = (DKArgument*)[args objectAtIndex: index];
NSString *annotatedKey = [arg annotationValueForKey: @"org.gnustep.openstep.notification.key"];
id value = nil;
if (DBUS_TYPE_OBJECT_PATH == [arg DBusType])
{
value = [arg unmarshalledProxyStandinFromIterator: iter];
}
else
{
value = [arg unmarshalledObjectFromIterator: iter];
}
if (nil == value)
{
value = [NSNull null];
}
[userInfo setObject: value
forKey: key];
if (nil != annotatedKey)
{
[userInfo setObject: value
forKey: annotatedKey];
}
index++;
if ((NO == (BOOL)dbus_message_iter_next(iter)) && (index < numArgs))
{
[NSException raise: @"DKSignalUnmarshallingException"
format: @"D-Bus message too short when unmarshalling arguments for signal '%@'.",
name];
}
}
return userInfo;
}
- (void)dealloc
{
[args release];
[super dealloc];
}
@end
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