fixed #157. cmd+delete now triggers the delete action

MacPass/MPActionHelper.h

@@ -44,5 +44,11 @@ typedef NS_ENUM(NSUInteger, MPActionType) {
  *	@return	MPActionTpype for action, if no match was found MPUnknownAction is returned
  */
 + (MPActionType)typeForAction:(SEL)action;
+/**
+ *  Returns the key equivalent for the given action type
+ *  @param type Action to get the equivalent for
+ *  @return NSString containing the key equivalent for this action. If none is present, an empty NString is returned
+ */
++ (NSString *)keyEquivalentForAction:(MPActionType)type;
 
 @end

MacPass/MPActionHelper.m

@@ -42,6 +42,17 @@
   return NSSelectorFromString(actionDict[@(type)]);
 }
 
++ (NSString *)keyEquivalentForAction:(MPActionType)type {
+  static NSDictionary *keyEquivalentDictionary;
+  static unichar backspaceCharacter = NSBackspaceCharacter;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    keyEquivalentDictionary = @{ @(MPActionDelete): [[NSString alloc] initWithCharacters:&backspaceCharacter length:1] };
+  });
+  NSString *keyEquivalent = keyEquivalentDictionary[@(type)];
+  return keyEquivalent ? keyEquivalent : @"";
+}
+
 + (MPActionType)typeForAction:(SEL)action {
   NSString *selectorString = NSStringFromSelector(action);
   NSArray *selectors = [[self _actionDictionary] allValues];

MacPass/MPContextMenuHelper.m

@@ -56,7 +56,7 @@ static void MPContextmenuHelperBeginSection(NSMutableArray *items) {
     if(insertDelete) {
       NSMenuItem *delete = [[NSMenuItem alloc] initWithTitle:NSLocalizedString(@"DELETE", @"")
                                                       action:[MPActionHelper actionOfType:MPActionDelete]
-                                               keyEquivalent:@""];
+                                               keyEquivalent:[MPActionHelper keyEquivalentForAction:MPActionDelete]];
       [items addObject:delete];
       
     }

MacPass/MPEntryViewController.m

@@ -308,7 +308,7 @@ NSString *const _MPTAbleSecurCellView = @"PasswordCell";
   MPDocument *document = [notification object];
   
   if(!document.selectedGroup) {
-    /* No group, this only can happen in filtering, just return */
+    /* TODO: handle deleted item */
     return;
   }
   /*