Question

在开发人员文档中，我发现了这个：

NSRuleEditor公开一个绑定rows。您可以将rows绑定到   有序集合（例如NSMutableArray的实例）。每   集合中的对象应具有以下属性：



@“rowType”表示行类型的整数（NSRuleEditorRowType）。



@“subrows”包含给定直接嵌套子节点的有序到多关系（例如NSMutableArray的实例）   行。



@“displayValues”包含行的显示值的有序多对多关系。



@“criteria”包含行标准的有序多对多关系。

任何人都可以举例说明如何做到这一点？

Answer 1

===========编辑=============

在我研究过的时候，NSRuleEditor类标题包含有关绑定的下一个文档：

* -- Bindings support -- */

/* Sets the class used when creating a new row in the "rows" binding; this class should be KVC and KVO compliant for the key paths listed below.  By default this is NSMutableDictionary */
- (void)setRowClass:(Class)rowClass;
- (Class)rowClass;

/* Set and get the key path for the row type, which is used to get the row type in the "rows" binding.  The row type is a value property of type NSRuleEditorRowType.  The default is @"rowType". */
- (void)setRowTypeKeyPath:(NSString *)keyPath;
- (NSString *)rowTypeKeyPath;

/* Set and get the key path for the subrows, which is used to determined nested rows in the "rows" binding.  The subrows property is an ordered to-many relationship containing additional bound row objects. The default is @"subrows". */
- (void)setSubrowsKeyPath:(NSString *)keyPath;
- (NSString *)subrowsKeyPath;

/* Set and get the criteria key path, which determines the criteria for a row in the "rows" binding.  (The criteria objects are what the delegate returns from - ruleEditor: child: forCriterion: withRowType:).  The criteria property is an ordered to-many relationship. The default is @"criteria". */
- (void)setCriteriaKeyPath:(NSString *)keyPath;
- (NSString *)criteriaKeyPath;

/* Set and get the display values key path, which determines the display values for a row (the display values are what the delegate returns from - ruleEditor: displayValueForCriterion: inRow:).  The criteria property is an ordered to-many relationship. The default is @"displayValues". */
- (void)setDisplayValuesKeyPath:(NSString *)keyPath;
- (NSString *)displayValuesKeyPath;

为了扩展答案，我将提供下一个示例，以便您了解如何将自己的类绑定为行：

@interface BindObject : NSObject

@property (nonatomic, assign) NSInteger rowType;
@property (nonatomic, strong) NSMutableArray *subrows;
@property (nonatomic, strong) NSMutableArray *displayValues;
@property (nonatomic, strong) NSMutableArray *criteria;

@end

// binding custom class as row class
[self.ruleEditor setRowClass:[BindObject class]];

现在，当您向NSRuleEditor添加新行时，将使用您的课程。您还可以更改KeyPath，因此可以调用自定义行类中的字段（ivars / properties），而不是文档中的特定字段。

希望这有助于您了解NSRuleEditor的工作原理。

- = - = - = - = - = - = - = - = - = - = - = - = - = - = - = -

我找到了this article，它应该可以帮助您了解NSRuleEditor的工作原理。

使用数组绑定NSRuleEditor行

1 个答案: