EditingViewController.h

/*
     File: EditingViewController.h
 Abstract: A generic view controller responsible for editing a field 
 of data (text or date).  The controller defines a protocol to communicate 
 changes to the view controller that manages the object being edited.
 
  Version: 1.2
 
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// Protocol to define communication between editing view controller and
// the view controller that configured it.
@protocol PropertyEditing
- (void)setValue:(id)newValue forEditedProperty:(NSString *)field;
@end
 
 
@interface EditingViewController : UIViewController 
 
// The object being edited.  The object is not modified directly
// by this class however it must be KVC compliant for the key
// specified in the editedPropertyKey.
@property (nonatomic, strong) id editedObject;
// The key for the property of editedObject that this view
// controller is to provide an editing interface for.  This
// value will be passed as the 'field' parameter of the
// -setValue:forEditedProperty: callback.
@property (nonatomic, strong) NSString *editedPropertyKey;
// Human readable name for the editedPropertyKey.
@property (nonatomic, strong) NSString *editedPropertyDisplayName;
 
// Determines whether the interface is configured for date (YES) or
// string (NO) editing.
@property (nonatomic, assign, getter=isEditingDate) BOOL editingDate;
 
@property (nonatomic, weak) id<PropertyEditing> sourceController;
 
@end