109 lines
2.7 KiB
Mathematica
109 lines
2.7 KiB
Mathematica
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#import "MASShortcutMonitor.h"
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#import "MASHotKey.h"
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@interface MASShortcutMonitor ()
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@property(assign) EventHandlerRef eventHandlerRef;
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@property(strong) NSMutableDictionary *hotKeys;
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@end
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static OSStatus MASCarbonEventCallback(EventHandlerCallRef, EventRef, void*);
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@implementation MASShortcutMonitor
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#pragma mark Initialization
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- (instancetype) init
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{
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self = [super init];
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[self setHotKeys:[NSMutableDictionary dictionary]];
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EventTypeSpec hotKeyPressedSpec = { .eventClass = kEventClassKeyboard, .eventKind = kEventHotKeyPressed };
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OSStatus status = InstallEventHandler(GetEventDispatcherTarget(), MASCarbonEventCallback,
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1, &hotKeyPressedSpec, (__bridge void*)self, &_eventHandlerRef);
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if (status != noErr) {
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return nil;
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}
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return self;
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}
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- (void) dealloc
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{
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if (_eventHandlerRef) {
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RemoveEventHandler(_eventHandlerRef);
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_eventHandlerRef = NULL;
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}
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}
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+ (instancetype) sharedMonitor
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{
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static dispatch_once_t once;
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static MASShortcutMonitor *sharedInstance;
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dispatch_once(&once, ^{
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sharedInstance = [[self alloc] init];
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});
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return sharedInstance;
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}
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#pragma mark Registration
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- (BOOL) registerShortcut: (MASShortcut*) shortcut withAction: (dispatch_block_t) action
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{
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MASHotKey *hotKey = [MASHotKey registeredHotKeyWithShortcut:shortcut];
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if (hotKey) {
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[hotKey setAction:action];
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[_hotKeys setObject:hotKey forKey:shortcut];
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return YES;
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} else {
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return NO;
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}
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}
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- (void) unregisterShortcut: (MASShortcut*) shortcut
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{
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if (shortcut) {
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[_hotKeys removeObjectForKey:shortcut];
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}
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}
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- (void) unregisterAllShortcuts
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{
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[_hotKeys removeAllObjects];
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}
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- (BOOL) isShortcutRegistered: (MASShortcut*) shortcut
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{
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return !![_hotKeys objectForKey:shortcut];
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}
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#pragma mark Event Handling
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- (void) handleEvent: (EventRef) event
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{
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if (GetEventClass(event) != kEventClassKeyboard) {
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return;
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}
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EventHotKeyID hotKeyID;
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OSStatus status = GetEventParameter(event, kEventParamDirectObject, typeEventHotKeyID, NULL, sizeof(hotKeyID), NULL, &hotKeyID);
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if (status != noErr || hotKeyID.signature != MASHotKeySignature) {
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return;
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}
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[_hotKeys enumerateKeysAndObjectsUsingBlock:^(MASShortcut *shortcut, MASHotKey *hotKey, BOOL *stop) {
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if (hotKeyID.id == [hotKey carbonID]) {
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if ([hotKey action]) {
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dispatch_async(dispatch_get_main_queue(), [hotKey action]);
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}
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*stop = YES;
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}
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}];
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}
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@end
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static OSStatus MASCarbonEventCallback(EventHandlerCallRef _, EventRef event, void *context)
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{
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MASShortcutMonitor *dispatcher = (__bridge id)context;
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[dispatcher handleEvent:event];
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return noErr;
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}
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