Fix up issues with Add to Blocklist: remove duplicates and refresh do…

…main list

AppController.m

@@ -227,6 +227,7 @@ - (void)handleConfigurationChangedNotification {
     // let the domain list know!
     if (domainListWindowController_ != nil) {
         domainListWindowController_.readOnly = [SCUIUtilities blockIsRunning];
+        [domainListWindowController_ refreshDomainList];
     }
 
     // let the timer window know!
@@ -431,8 +432,11 @@ - (void)addToBlockList:(NSString*)host lock:(NSLock*)lock {
     if (cleanedEntries.count == 0) return;
 
     for (NSUInteger i = 0; i < cleanedEntries.count; i++) {
-       NSString* entry = cleanedEntries[i];
-       [list addObject: entry];
+        NSString* entry = cleanedEntries[i];
+        // don't add duplicate entries
+        if (![list containsObject: entry]) {
+            [list addObject: entry];
+        }
     }
 
 	[defaults_ setValue: list forKey: @"Blocklist"];

DomainListWindowController.h

@@ -39,6 +39,8 @@
 
 @property (getter=isReadOnly) BOOL readOnly;
 
+- (void)refreshDomainList;
+
 // Called when the add button is clicked.  Adds a new empty string to the domain
 // list, reloads the table view, and highlights and opens that cell for editing.
 - (IBAction)addDomain:(id)sender;

DomainListWindowController.m

@@ -48,6 +48,11 @@ - (void)awakeFromNib  {
     [self updateWindowTitle];
 }
 
+- (void)refreshDomainList {
+    domainList_ = [[defaults_ arrayForKey: @"Blocklist"] mutableCopy];
+    [domainListTableView_ reloadData];
+}
+
 - (void)showWindow:(id)sender {
 	[[self window] makeKeyAndOrderFront: self];
 

TimerWindowController.m

@@ -282,6 +282,7 @@ - (IBAction) closeExtendSheet:(id)sender {
 - (IBAction) performAddSite:(id)sender {
 	NSString* addToBlockTextFieldContents = [addToBlockTextField_ stringValue];
 	[self.appController addToBlockList: addToBlockTextFieldContents lock: modifyBlockLock];
+    addToBlockTextField_.stringValue = @""; // clear text field for next time
 	[NSApp endSheet: addSheet_];
 }