Classes/NJMappingMenuController.m

   1 //
   2 //  NJMappingMenuController.m
   3 //  Enjoyable
   4 //
   5 //  Created by Joe Wreschnig on 3/11/13.
   6 //
   7 //
   8
   9 #import "NJMappingMenuController.h"
  10
  11 #import "NJEvents.h"
  12 #import "NJMapping.h"
  13
  14 #define MAXIMUM_MAPPINGS_IN_MENU 15
  15
  16 @implementation NJMappingMenuController
  17
  18 - (id)init {
  19     if ((self = [super init])) {
  20         NSNotificationCenter *center = NSNotificationCenter.defaultCenter;
  21         [center addObserver:self
  22                    selector:@selector(mappingsListDidChange:)
  23                        name:NJEventMappingListChanged
  24                      object:nil];
  25         [center addObserver:self
  26                    selector:@selector(mappingDidChange:)
  27                        name:NJEventMappingChanged
  28                      object:nil];
  29         [center addObserver:self
  30                    selector:@selector(eventTranslationActivated:)
  31                        name:NJEventTranslationActivated
  32                      object:nil];
  33         [center addObserver:self
  34                    selector:@selector(eventTranslationDeactivated:)
  35                        name:NJEventTranslationDeactivated
  36                      object:nil];
  37     }
  38     return self;
  39 }
  40
  41 - (void)dealloc {
  42     [NSNotificationCenter.defaultCenter removeObserver:self];
  43 }
  44
  45 - (void)_mappingWasChosen:(NSMenuItem *)sender {
  46     NJMapping *mapping = sender.representedObject;
  47     [self.delegate mappingWasChosen:mapping];
  48 }
  49
  50 - (void)_mappingListWasChosen:(NSMenuItem *)sender {
  51     [self.delegate mappingListShouldOpen];
  52 }
  53
  54 - (void)mappingsListDidChange:(NSNotification *)note {
  55     NSArray *mappings = note.userInfo[NJMappingListKey];
  56     NJMapping *currentMapping = note.userInfo[NJMappingKey];
  57     NSMenuItem *toRemove;
  58     while (self.menu.numberOfItems > self.firstMappingIndex
  59            && (toRemove = [self.menu itemAtIndex:self.firstMappingIndex])
  60            && ([toRemove.representedObject isKindOfClass:NJMapping.class]
  61                || toRemove.representedObject == self.class))
  62         [self.menu removeItemAtIndex:self.firstMappingIndex];
  63
  64     int added = 0;
  65     NSUInteger index = self.firstMappingIndex;
  66     for (NJMapping *mapping in mappings) {
  67         NSString *keyEquiv = (++added < 10 && self.hasKeyEquivalents)
  68             ? @(added).stringValue
  69             : @"";
  70         NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:mapping.name
  71                                                       action:@selector(_mappingWasChosen:)
  72                                                keyEquivalent:keyEquiv];
  73         item.representedObject = mapping;
  74         item.state = mapping == currentMapping;
  75         item.target = self;
  76         [self.menu insertItem:item atIndex:index++];
  77         if (added == MAXIMUM_MAPPINGS_IN_MENU
  78             && mappings.count > MAXIMUM_MAPPINGS_IN_MENU + 1) {
  79             NSString *msg = [NSString stringWithFormat:NSLocalizedString(@"mapping overflow %lu",
  80                                                                          @"menu item when mappings list overflows"),
  81                              mappings.count - MAXIMUM_MAPPINGS_IN_MENU];
  82             NSMenuItem *end = [[NSMenuItem alloc] initWithTitle:msg
  83                                                          action:@selector(_mappingListWasChosen:)
  84                                                   keyEquivalent:@""];
  85             // There must be a represented object here so the item gets
  86             // removed correctly when the menus are regenerated.
  87             end.representedObject = self.class;
  88             end.target = self;
  89             [self.menu insertItem:end atIndex:index];
  90             break;
  91         }
  92     }
  93 }
  94
  95 - (void)mappingDidChange:(NSNotification *)note {
  96     NJMapping *mapping = note.userInfo[NJMappingKey];
  97     for (NSMenuItem *item in self.menu.itemArray)
  98         if ([item.representedObject isKindOfClass:NJMapping.class])
  99             item.state = mapping == item.representedObject;
 100 }
 101
 102 - (void)eventTranslationActivated:(NSNotification *)note {
 103     self.eventTranslationToggle.title = NSLocalizedString(@"Disable",
 104                                                           @"menu item text to disable event translation");
 105 }
 106
 107 - (void)eventTranslationDeactivated:(NSNotification *)note {
 108     self.eventTranslationToggle.title = NSLocalizedString(@"Enable",
 109                                                           @"menu item text to enable event translation");
 110 }
 111
 112 @end