Added a simplified binding API for MASShortcutView.

This returns the associatedUserDefaultsKey property used in previous code
versions, only the implementation uses less magic.

3 files changed, 76 insertions, 0 deletions

diff --git a/Framework/MASShortcutView+Bindings.h b/Framework/MASShortcutView+Bindings.h
new file mode 100644
index 0000000..b0148e7
--- /dev/null
+++ b/Framework/MASShortcutView+Bindings.h
@@ -0,0 +1,25 @@
+#import "MASShortcutView.h"
+
+/**
+    @brief A simplified interface to bind the recorder value to user defaults.
+
+    You can bind the @p shortcutValue to user defaults using the standard
+    @p bind:toObject:withKeyPath:options: call, but since that’s a lot to type
+    and read, here’s a simpler option.
+
+    Setting the @p associatedUserDefaultsKey binds the view’s shortcut value
+    to the given user defaults key. You can supply a value transformer to convert
+    values between user defaults and @p MASShortcut. If you don’t supply
+    a transformer, the @p NSUnarchiveFromDataTransformerName will be used
+    automatically.
+
+    Set @p associatedUserDefaultsKey to @p nil to disconnect the binding.
+*/
+@interface MASShortcutView (Bindings)
+
+@property(copy) NSString *associatedUserDefaultsKey;
+
+- (void) setAssociatedUserDefaultsKey: (NSString*) newKey withTransformer: (NSValueTransformer*) transformer;
+- (void) setAssociatedUserDefaultsKey: (NSString*) newKey withTransformerName: (NSString*) transformerName;
+
+@end
diff --git a/Framework/MASShortcutView+Bindings.m b/Framework/MASShortcutView+Bindings.m
new file mode 100644
index 0000000..7a6064c
--- /dev/null
+++ b/Framework/MASShortcutView+Bindings.m
@@ -0,0 +1,50 @@
+#import "MASShortcutView+Bindings.h"
+
+@implementation MASShortcutView (Bindings)
+
+- (NSString*) associatedUserDefaultsKey
+{
+	NSDictionary* bindingInfo = [self infoForBinding:MASShortcutBinding];
+    if (bindingInfo != nil) {
+        NSString *keyPath = [bindingInfo objectForKey:NSObservedKeyPathKey];
+        NSString *key = [keyPath stringByReplacingOccurrencesOfString:@"values." withString:@""];
+        return key;
+    } else {
+        return nil;
+    }
+}
+
+- (void) setAssociatedUserDefaultsKey: (NSString*) newKey withTransformer: (NSValueTransformer*) transformer
+{
+    // Break previous binding if any
+    NSString *currentKey = [self associatedUserDefaultsKey];
+    if (currentKey != nil) {
+        [self unbind:currentKey];
+    }
+
+    // Stop if the new binding is nil
+    if (newKey == nil) {
+        return;
+    }
+
+    NSDictionary *options = transformer ?
+        @{NSValueTransformerBindingOption:transformer} :
+        nil;
+
+    [self bind:MASShortcutBinding
+        toObject:[NSUserDefaultsController sharedUserDefaultsController]
+        withKeyPath:[@"values." stringByAppendingString:newKey]
+        options:options];
+}
+
+- (void) setAssociatedUserDefaultsKey: (NSString*) newKey withTransformerName: (NSString*) transformerName
+{
+    [self setAssociatedUserDefaultsKey:newKey withTransformer:[NSValueTransformer valueTransformerForName:transformerName]];
+}
+
+- (void) setAssociatedUserDefaultsKey: (NSString*) newKey
+{
+    [self setAssociatedUserDefaultsKey:newKey withTransformerName:NSUnarchiveFromDataTransformerName];
+}
+
+@end
diff --git a/Framework/Shortcut.h b/Framework/Shortcut.h
index df33f17..e131395 100644
--- a/Framework/Shortcut.h
+++ b/Framework/Shortcut.h
@@ -4,3 +4,4 @@
 #import "MASShortcutBinder.h"
 #import "MASDictionaryTransformer.h"
 #import "MASShortcutView.h"
+#import "MASShortcutView+Bindings.h"
\ No newline at end of file