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Palm webOS
book

Palm webOS

by Mitch Allen
July 2009
Intermediate to advanced
464 pages
12h 25m
English
O'Reilly Media, Inc.
Content preview from Palm webOS

Dialogs

This section includes the three Mojo dialog APIs:

  • Error dialog

  • Alert dialog

  • Custom dialog

Each entry includes a brief description, repeating some of the information from Chapter 4, followed by an enumeration of the arguments. Dialogs are accessed through a direct API so the format for this entry will be structured as an API entry.

Mojo.Controller.errorDialog()

This API is used to post error messages in a modal dialog box with a fixed title of “Error,” a customizable message, and a confirmation button. The Error dialog must be used only with errors, since you can’t change the title.

Arguments

Type

Description

message

String

Displayed message in a modal dialog

window

Element

Optional argument to specify the window to post the alert within; required in multistage applications

Mojo.Controller.SceneController.showAlertDialog()

You can display a short message using an Alert dialog, with one or more HTML buttons presenting the selection options. This is the best option if you have either a nonerror message for the user or want to present options in the form of button selections.

Arguments

Type

Description

onChoose
FunctionHandler called when user makes a choice and the dialog is dismissed
message

String

Displayed message in a modal dialog

title

String

Title of the dialog box

preventCancel

Boolean

If true, back gesture or other alerts will not cancel the dialog box

choices

Array

Array of button descriptions; each entry is required to be:

{label: 'string', value: value, type: 'string', allowHTMLMessage: boolean} ...
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Publisher Resources

ISBN: 9780596802097Errata Page