Adobe Smoke Alarm CS3 Manual De Usuario

 Scripting Photoshop CS3     21

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end tell

Because you include all commands in the 

 block, there is no need to reference the 

Application

 object throughout the script. 

In VBScript, do the following to target the application:

Dim appRef 
Set appRef = CreateObject("Photoshop.Application") 

In JavaScript, because you do not need to reference an 

Application

 object, all properties and methods of 

the application are accessible without any qualification. You can reference the application as part of the 
containment hierarchy or leave it out, whichever makes your scripts easier for you to read. 

To reference the 

Application

 object, use the pre-defined global object app, rather than the class name.

The following statements are equivalent:

var docRef = app.documents[1]

and 

var docRef=documents[1]

Many JavaScript samples throughout this guide do not reference the 

Application

 object. 

To create a new document in the Photoshop CS3 application, you select File > New. To create other types 
of objects within a document, such as a layer, channel, or path, you use the Window menu or choose the 
New icon on the appropriate palette. This section demonstrates how to accomplish these same tasks in a 
script. 

To create an object in a script, you name the type of object you want to create and then use the following 
command:

●

AS: 

make

●

VBS: 

Add

●

JS: 

add()

As you can see in the 

, the Document object contains all other 

objects except the 

Application

, 

Notifier

, and 

Preferences

 objects. Therefore, you must reference the 

Document

 object when adding objects other than 

Document

 and 

Notifier

 objects to your script. (It is not 

possible to add a new Preferences object.)

In VBScript and JavaScript, you use the object’s collection name to name the object type. For 
example, you add a document to the 

Documents

 collection; you add an art layer to the 

art layers

 

collection. See Introduction to Scripting for more information on elements and collections.

The following statement creates a 

Document

 object in an AppleScript.

make new document

You can also use the 

set

 command to create a variable to hold a reference to a new document. In the 

following example, the variable named 

docRef

 holds a reference to the new document: