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CHAPTER 4: User-Interface Tools ScriptUI programming model 65

The following examples show equivalent ways of changing an existing window’s width and height to

200 and 100:

win.size = [200, 100];

win.size = {width:200, height:100};

win.size = "width:200, height:100";

This example shows how to change a window’s height to 100, leaving its location and width

unchanged:

win.size.height = 100;

The bounds of an element are defined by a Bounds object containing both the origin point (x, y) and

size (

width, height) To define the size and location of windows and controls in one step, use the

bounds property.

The value of the

bounds property can be a string with appropriate contents, an inline JavaScript

Bounds object, or a four-element array. The following examples show equivalent ways of placing a 380

by 390 pixel window near the upper left corner of the screen:

var dlg = new Window(’dialog’, ’Alert Box Builder’, [100,100,480,490]);

dlg.bounds = [100,100,480,490];

dlg.bounds = {x:100, y:100, width:380, height:390};

dlg.bounds = {left:100, top:100, right:480, bottom:490};

dlg.bounds = "left:100, top:100, right:480, bottom:490";

The window dimensions define the size of the content region of the window, or that portion of the window

that a script can directly control. The actual window size is typically larger, because the host platform’s

window system typically adds title bars and borders. The

bounds property for a Window refers only to its

content region. To determine the bounds of the frame surrounding the content region of a window, use

the

Window.frameBounds property.

Adding elements to containers

To add elements to a window, panel, or group, use the container’s add method. This method accepts the

type of the element to be created and some optional parameters, depending on the element type. It

creates and returns an object of the specified type.

In additions to windows, ScriptUI defines the following user-interface elements and controls:

X Panels (frames) and groups, to collect and organize other control types

X Push buttons with text or icons, radio buttons, checkbox buttons

X Static text or images, edit text

X Progress bars, scrollbars, sliders

X Lists, which include list boxes, drop-down (also called popup) lists, and tree views. Each item in a list is

a control of type

item, and the parent list’s items property contains an array of child items. Tree views

can also have collapsible

node-type items, which contain child items. You can add list items with the

parent’s

add method.

You can specify the initial size and position of any new element relative to the working area of the parent

container, in an optional

bounds parameter. Different types of elements have different additional

parameters. For elements which display text, for example, you can specify the initial text. See the ScriptUI

Classes dictionary in the ExtendScript Toolkit’s Object Model Viewer for details.

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