Objective c 用数组绑定行编辑器

在开发人员文档中，我发现：

NSRuleEditor

公开一个绑定，

行

。您可以将

行

绑定到 有序集合（例如

NSMutableArray

的实例）。每个 集合中的对象应具有以下属性：

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

• @“subrows”一个有序的多对多关系（例如NSMutableArray的实例），包含给定对象的直接嵌套的subrows 划船

• @“displayValues”一个包含行的显示值的有序对多关系

• @“条件”包含行的条件的有序到多关系

---

任何人都可以举例说明如何做到这一点。

==EDIT=============

正如我所研究的，

NSRuleEditor

类标题包含关于绑定的下一个文档：

* -- 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，我将给出下一个示例，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，将使用您的类。您还可以更改KeyPath，以便自定义行类中的字段（IVAR/属性）的调用方式可能与文档中指定的不同

希望这将帮助您了解NSRuleEditor的工作原理

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我发现，它应该可以帮助您了解NSRuleEditor的工作原理。

遗憾的是，本文和示例代码没有介绍如何使用NSRuleEditor绑定“行”。