diff options
Diffstat (limited to 'Framework/MASShortcutView.m')
| -rw-r--r-- | Framework/MASShortcutView.m | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Framework/MASShortcutView.m b/Framework/MASShortcutView.m index 6f562a5..d03efbc 100644 --- a/Framework/MASShortcutView.m +++ b/Framework/MASShortcutView.m @@ -1,6 +1,8 @@ #import "MASShortcutView.h" #import "MASShortcutValidator.h" +NSString *const MASShortcutBinding = @"shortcutValue"; + #define HINT_BUTTON_WIDTH 23.0 #define BUTTON_FONT_SIZE 11.0 #define SEGMENT_CHROME_WIDTH 6.0 @@ -149,6 +151,7 @@ _shortcutValue = shortcutValue; [self resetToolTips]; [self setNeedsDisplay:YES]; + [self propagateValue:shortcutValue forBinding:@"shortcutValue"]; if (self.shortcutValueChange) { self.shortcutValueChange(self); @@ -462,4 +465,51 @@ void *kUserDataHint = &kUserDataHint; } } +#pragma mark Bindings + +// http://tomdalling.com/blog/cocoa/implementing-your-own-cocoa-bindings/ +-(void) propagateValue:(id)value forBinding:(NSString*)binding; +{ + NSParameterAssert(binding != nil); + + //WARNING: bindingInfo contains NSNull, so it must be accounted for + NSDictionary* bindingInfo = [self infoForBinding:binding]; + if(!bindingInfo) + return; //there is no binding + + //apply the value transformer, if one has been set + NSDictionary* bindingOptions = [bindingInfo objectForKey:NSOptionsKey]; + if(bindingOptions){ + NSValueTransformer* transformer = [bindingOptions valueForKey:NSValueTransformerBindingOption]; + if(!transformer || (id)transformer == [NSNull null]){ + NSString* transformerName = [bindingOptions valueForKey:NSValueTransformerNameBindingOption]; + if(transformerName && (id)transformerName != [NSNull null]){ + transformer = [NSValueTransformer valueTransformerForName:transformerName]; + } + } + + if(transformer && (id)transformer != [NSNull null]){ + if([[transformer class] allowsReverseTransformation]){ + value = [transformer reverseTransformedValue:value]; + } else { + NSLog(@"WARNING: binding \"%@\" has value transformer, but it doesn't allow reverse transformations in %s", binding, __PRETTY_FUNCTION__); + } + } + } + + id boundObject = [bindingInfo objectForKey:NSObservedObjectKey]; + if(!boundObject || boundObject == [NSNull null]){ + NSLog(@"ERROR: NSObservedObjectKey was nil for binding \"%@\" in %s", binding, __PRETTY_FUNCTION__); + return; + } + + NSString* boundKeyPath = [bindingInfo objectForKey:NSObservedKeyPathKey]; + if(!boundKeyPath || (id)boundKeyPath == [NSNull null]){ + NSLog(@"ERROR: NSObservedKeyPathKey was nil for binding \"%@\" in %s", binding, __PRETTY_FUNCTION__); + return; + } + + [boundObject setValue:value forKeyPath:boundKeyPath]; +} + @end |