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CHAPTER 4: User-Interface Tools ScriptUI programming model 63

ScriptUI programming model

ScriptUI defines Window objects that represent platform-specific windows, and various control elements

such as

Button and StaticText, that represent user-interface controls. These objects share a common set

of properties and methods that allow you to query the type, move the element around, set the title,

caption or content, and so on. Many element types also have properties unique to that class of elements.

Creating a window

ScriptUI defines the following types of windows:

X Modal dialog box: Holds focus when shown, does not allow activity in other application windows until

dismissed.

X Floating palette: Also called modeless dialog, allows activity in other application windows. (Adobe

Photoshop

does not support script creation of palette windows.)

X Main window: Suitable for use as an application’s main window. (Main windows are not normally

created by script developers for Adobe applications. Photoshop does not support script creation of

main windows.)

To create a new window, use the

Window constructor function. The constructor takes the desired type of

the window. The type is

"dialog" for a modal dialog, or "palette" for a modeless dialog or floating

palette. You can supply optional arguments to specify an initial window title and bounds; or you can set

the location and size separately.

The following example creates an empty dialog with the variable name

dlg, which is used in subsequent

examples:

// Create an empty dialog window near the upper left of the screen

var dlg = new Window(’dialog’, ’Alert Box Builder’);

dlg.frameLocation = [100,100];

Initially, new windows are hidden. The show method makes them visible and responsive to user

interaction; for example:

dlg.show();

SnpCreateDynamicScriptUI.jsx

Shows how to use automatic layout, switching component

layout between “row” and “stack” orientation.

AlertBoxBuilder1.jsx

Shows a way to use resource specifications. Uses the add()

method to build a dialog that collects values from the user,

and creates a resource string from those values. Saves the

string to a file, then uses it to build a new dialog. See “

Using

resource strings” on page 79.

AlertBoxBuilder2.jsx

Shows another way to use a resource specification, building

the same user-input dialog itself from a resource string. See

“

Using resource strings” on page 79.

SnpCustomLayoutManager.jsx

Shows how to create a customized layout manager. See

“

Custom layout-manager example” on page 95.

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