only changed items in the full network list are updated now

macui/ZeroTier One/Network.h

@@ -59,4 +59,10 @@ enum NetworkType {
 - (NSString*)statusString;
 - (NSString*)typeString;
 
+- (BOOL)hasSameNetworkId:(UInt64)networkId;
+
+- (BOOL)isEqualToNetwork:(Network*)network;
+- (BOOL)isEqual:(id)object;
+- (NSUInteger)hash;
+
 @end

macui/ZeroTier One/Network.m

@@ -275,4 +275,63 @@ NSString *NetworkAllowDefaultKey = @"allowDefault";
     }
 }
 
+- (BOOL)hasSameNetworkId:(UInt64)networkId
+{
+    return self.nwid == networkId;
+}
+
+- (BOOL)isEqualToNetwork:(Network*)network
+{
+    return [self.assignedAddresses isEqualToArray:network.assignedAddresses] &&
+        self.bridge == network.bridge &&
+        self.broadcastEnabled == network.broadcastEnabled &&
+        self.dhcp == network.dhcp &&
+        [self.mac isEqualToString:network.mac] &&
+        self.mtu == network.mtu &&
+        self.netconfRevision == network.netconfRevision &&
+        [self.name isEqualToString:network.name] &&
+        self.nwid == network.nwid &&
+        [self.portDeviceName isEqualToString:network.portDeviceName] &&
+        self.status == network.status &&
+        self.type == network.type &&
+        self.allowManaged == network.allowManaged &&
+        self.allowGlobal == network.allowGlobal &&
+        self.allowDefault == network.allowDefault &&
+        self.connected == network.connected;
+}
+
+- (BOOL)isEqual:(id)object
+{
+    if (self == object) {
+        return YES;
+    }
+
+    if (![object isKindOfClass:[Network class]]) {
+        return NO;
+    }
+
+    return [self isEqualToNetwork:object];
+}
+
+- (NSUInteger)hash
+{
+    return [self.assignedAddresses hash] ^
+        self.bridge ^
+        self.broadcastEnabled ^
+        self.dhcp ^
+        [self.mac hash] ^
+        self.mtu ^
+        self.netconfRevision ^
+        [self.name hash] ^
+        self.nwid ^
+        [self.portDeviceName hash] ^
+        self.portError ^
+        self.status ^
+        self.type ^
+        self.allowManaged ^
+        self.allowGlobal ^
+        self.allowDefault ^
+        self.connected;
+}
+
 @end

macui/ZeroTier One/ShowNetworksViewController.h

@@ -23,7 +23,7 @@
 
 @interface ShowNetworksViewController : NSViewController<NSTableViewDelegate, NSTableViewDataSource>
 
-@property (nonatomic) NSArray<Network*> *networkList;
+@property (nonatomic) NSMutableArray<Network*> *networkList;
 @property (nonatomic) NetworkMonitor *netMonitor;
 @property (nonatomic) BOOL visible;
 

macui/ZeroTier One/ShowNetworksViewController.m

@@ -21,6 +21,17 @@
 #import "NetworkInfoCell.h"
 #import "Network.h"
 
+BOOL hasNetworkWithID(NSArray<Network*> *list, UInt64 nwid)
+{
+    for(Network *n in list) {
+        if(n.nwid == nwid) {
+            return YES;
+        }
+    }
+
+    return NO;
+}
+
 @interface ShowNetworksViewController ()
 
 @end
@@ -30,6 +41,8 @@
 - (void)viewDidLoad {
     [super viewDidLoad];
 
+    self.networkList = [NSMutableArray array];
+
     [self.tableView setDelegate:self];
     [self.tableView setDataSource:self];
     [self.tableView setBackgroundColor:[NSColor clearColor]];
@@ -50,9 +63,30 @@
 }
 
 - (void)setNetworks:(NSArray<Network *> *)list {
-    _networkList = list;
+    for (Network *n in list) {
-    if(_visible) {
+        if ([_networkList containsObject:n]) {
-        [_tableView reloadData];
+            // don't need to do anything here.  Already an identical object in the list
+            continue;
+        }
+        else {
+            // network not in the list based on equality.  Did an object change? or is it a new item?
+            if (hasNetworkWithID(_networkList, n.nwid)) {
+
+                for (int i = 0; i < [_networkList count]; ++i) {
+                    Network *n2 = [_networkList objectAtIndex:i];
+                    if (n.nwid == n2.nwid)
+                    {
+                        [_networkList replaceObjectAtIndex:i withObject:n];
+                        [_tableView reloadDataForRowIndexes:[NSIndexSet indexSetWithIndex:i]
+                                              columnIndexes:[NSIndexSet indexSetWithIndex:0]];
+                    }
+                }
+            }
+            else {
+                [_networkList addObject:n];
+                [_tableView reloadData];
+            }
+        }
     }
 }