From d9d15b3f8729758f19b21918fee758b856921673 Mon Sep 17 00:00:00 2001
From: Joe Wreschnig <joe.wreschnig@gmail.com>
Date: Thu, 28 Feb 2013 13:46:41 +0100
Subject: [PATCH] Use a weak reference for TargetConfig configurations to avoid
 a circular reference, and to auto-nil them when the chosen config is deleted.

---
 ConfigsController.m | 10 ----------
 TargetConfig.h      | 12 ++++++------
 TargetConfig.m      | 33 +++++++++++++++------------------
 3 files changed, 21 insertions(+), 34 deletions(-)

diff --git a/ConfigsController.m b/ConfigsController.m
index 50861cf..65732e2 100644
--- a/ConfigsController.m
+++ b/ConfigsController.m
@@ -73,16 +73,6 @@
     if (toRemove == manualConfig)
         manualConfig = configs[0];
 	
-	// remove all "switch to configuration" actions
-    for (Config *config in configs) {
-		NSMutableDictionary *entries = config.entries;
-		for (id key in entries) {
-			Target *target = entries[key];
-			if ([target isKindOfClass:[TargetConfig class]]
-                && [(TargetConfig *)target config] == toRemove)
-				[entries removeObjectForKey: key];
-		}
-	}
 	[(ApplicationController *)[[NSApplication sharedApplication] delegate] configsChanged];	
 	[tableView reloadData];
 }
diff --git a/TargetConfig.h b/TargetConfig.h
index b08e31b..addf2eb 100644
--- a/TargetConfig.h
+++ b/TargetConfig.h
@@ -7,14 +7,14 @@
 //
 
 #import <Cocoa/Cocoa.h>
+
+#import "Target.h"
+
 @class Config;
-@class Target;
 
-@interface TargetConfig : Target {
-	Config *config;
-}
+@interface TargetConfig : Target
 
-@property(readwrite, strong) Config* config;
-+(TargetConfig*) unstringifyImpl: (NSArray*) comps withConfigList: (NSArray*) configs;
+@property (weak) Config *config;
++ (TargetConfig *)unstringifyImpl:(NSArray *)comps withConfigList:(NSArray *)configs;
 
 @end
diff --git a/TargetConfig.m b/TargetConfig.m
index 8e4fc40..469edab 100644
--- a/TargetConfig.m
+++ b/TargetConfig.m
@@ -7,30 +7,27 @@
 
 #import "TargetConfig.h"
 
-
 @implementation TargetConfig
 
-@synthesize config;
-
--(NSString*) stringify {
-	return [[NSString alloc] initWithFormat: @"cfg~%@", [config name]];
+- (NSString *)stringify {
+    return [[NSString alloc] initWithFormat: @"cfg~%@", self.config.name];
 }
 
-+(TargetConfig*) unstringifyImpl: (NSArray*) comps withConfigList: (NSArray*) configs {
-	NSParameterAssert([comps count] == 2);
-	NSString* name = comps[1];
-	TargetConfig* target = [[TargetConfig alloc] init];
-	for(int i=0; i<[configs count]; i++)
-		if([[configs[i] name] isEqualToString:name]) {
-			[target setConfig: configs[i]];
-			return target;
-		}
-	NSLog(@"Warning: couldn't find matching config to restore from: %@",name);
-	return NULL;
++ (TargetConfig *)unstringifyImpl:(NSArray *)comps withConfigList:(NSArray *)configs {
+    NSString *name = comps[1];
+    TargetConfig *target = [[TargetConfig alloc] init];
+    for (Config *config in configs) {
+        if ([config.name isEqualToString:name]) {
+            target.config = config;
+            return target;
+        }
+    }
+    NSLog(@"Warning: couldn't find matching config to restore from: %@", name);
+    return nil;
 }
 
--(void) trigger {
-	[[(ApplicationController *)[[NSApplication sharedApplication] delegate] configsController] activateConfig:config];
+- (void)trigger {
+    [[(ApplicationController *)[[NSApplication sharedApplication] delegate] configsController] activateConfig:self.config];
 }
 
 @end
-- 
2.20.1