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Oracle® Application Express Application Builder User's Guide
Release 4.1

Part Number E21674-05
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How Item Attributes Affect Page Layout

An item is part of an HTML form and can be a text field, text area, password, select list, check box, and so on. You can alter the appearance of a page by changing the item attributes. For example, these attributes can effect where a label displays, how large an item will be, if the item will display next to or below the previous item.

To edit item attributes:

  1. Navigate to the Page Definition. See "Accessing the Page Definition".

  2. Under Items, click the item name.

    The Edit Page Item page appears.

Table 12-3 describes how item attributes affect the layout of a page.

Table 12-3 Item Attributes Effecting Page Layout

Heading Attribute Description

Displayed

Sequence

Determines the order that items are rendered within a region.

Displayed

Region

Defines the region where the item displays. All items must be in a region.

Displayed

Begin On New Line

Determines if this item displays on the same line or on the next line as the previous item.

Displayed

...Field

Determines if this item displays in the next column or in the same column as the previous item.

Displayed

ColSpan

Items are laid out in HTML tables. Defines the value to be used for the COLSPAN attribute of the table cell containing an item.

Displayed

RowSpan

Items are laid out in HTML tables. Defines the value to be used for the ROWSPAN attribute in the table cell where the item displays.

Label

Label

Defines the label for this item. You can include HTML, JavaScript, and shortcuts. You can also use the substitution string #CURRENT_ITEM_NAME# to obtain the name of the item associated with this label.

Label

Horizontal/Vertical Alignment

Controls the placement and the horizontal and vertical alignment of the label. Labels can be displayed above, below, or to the left of the item.

Label

Template

Specifies the label template. Use label templates to apply a consistent appearance to labels in your application.

Label

HTML Table Cell Attributes

Defines additional attributes for the cell containing this item's label (for example, nowrap="nowrap").

Element

Pre Element Texts

Specifies additional attributes for the HTML table cell used to display each individual option in a radio group or set of check boxes. Can include HTML, JavaScript, and shortcuts. You can reference the following substitution strings:

  • #CURRENT_FORM_ELEMENT# obtains the name of the HTML form element with which this post element text is associated.

  • #CURRENT_ITEM_NAME# obtains the name of the item with which this post element text is associated.

Element

Post Element Texts

Specifies additional attributes for the HTML table cell used to display each individual option in a radio group or set of check boxes. Can include HTML, JavaScript, and shortcuts. You can reference the following substitution strings:

  • #CURRENT_FORM_ELEMENT# obtains the name of the HTML form element with which this post element text is associated.

  • #CURRENT_ITEM_NAME# obtains the name of the item with which this post element text is associated.

List of Values

Columns

Applies to radio groups and check boxes. Defines the number of columns to use to display the values defined in the List of Values. By default, all values display in one column.

Conditions

Condition Type and Expressions

Defines conditions and appropriate expressions that determine if an item displays.

See Also: "Understanding Conditional Rendering and Processing"

Read Only Display Settings

Read Only Condition Type

Defines conditions and expressions that determine if the item displays as read-only. Use this attribute to display certain items to a set of users as updatable, while displaying that same set of items to others users as nonupdatable. Reduces the need to code duplicate interfaces for different users.