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NSSetCommand Class Reference

Overview

An instance of NSSetCommand sets one or more attributes or relationships to one or more values; for example, it may set the (x, y) coordinates for a window’s position or set the name of a document.

NSSetCommand is part of Cocoa’s built-in scripting support. It works automatically to support the set command through key-value coding. Most applications don’t need to subclass NSSetCommand or call its methods.

NSSetCommand uses available scripting class descriptions to determine whether it should set a value for an attribute (or property), or set a value for all elements (to-many objects). For the latter, it invokes replaceValueAtIndex:inPropertyWithKey:withValue:; for the former, it invokes setValue:forKey: (or, if the receiver overrides takeValue:forKey:, it invokes that method, to support backward binary compatibility.)

For information on working with set commands, see Getting and Setting Properties and Elements in Cocoa Scripting Guide.

Tasks

Working with Specifiers

• – keySpecifier
• – setReceiversSpecifier:

Instance Methods

keySpecifier

Returns a specifier that identifies the attribute or relationship that is to be set for the receiver of the set AppleScript command.

- (NSScriptObjectSpecifier *)keySpecifier

Return Value

A specifier that identifies the attribute or relationship that is to be set for the receiver of the set AppleScript command.

Availability

• Available in Mac OS X v10.0 and later.

Declared In

NSScriptStandardSuiteCommands.h

setReceiversSpecifier:

Sets the receiver’s object specifier.

- (void)setReceiversSpecifier:(NSScriptObjectSpecifier *)receiversRef

Parameters

receiversRef

The receiver’s object specifier.

Discussion

When the command is executed, it sets attributes or relationships in the objects specified by receiversRef.

This method overrides setReceiversSpecifier: in NSScriptCommand. It performs the same function as the overridden method, with a critical difference: it causes the container specifier part of the passed-in object specifier to become the receiver specifier of the command, and the key part of the passed-in object specifier to become the key specifier. If, for example, receiversRef is a specifier for the color of the third rectangle, the receiver specifier is the third rectangle, while the key specifier is the color.

Availability

• Available in Mac OS X v10.0 and later.

Declared In

NSScriptStandardSuiteCommands.h

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