About Tree and Component View

A page is the basic building block of an application. Each page has a page number, a name, and typically some text attributes such as a header, title, and footer. You add content to your page by creating page controls (regions, items, and buttons). Page templates and page region templates control the exact look and feel of each page.

There are two way to view a page:

• Tree view. See "About Tree View".

• Component view. See "About Component View".

About Tree View

In Tree view displays regions, page items, and application logic as nodes in a tree. Each tree groups components based on event sequence or how Oracle Application Express processes them when rendering a page. This organization enables you to better understand when a component is processed.

Description of the illustration pg_def_tree.gif

Key features of this view include:

• Context menus. Each tree node features a custom context menu. To access a context menu, right-click.

• Quick access to attributes pages. To edit attributes, double-click or press ENTER. If available, an attribute page appears.

• Easy reorder of components. Reorder page items, report columns, processes, validations, branches, or computations by dragging and dropping to another display, processing point, or region.

• Tooltips. Each tree node features a tooltip which displays basic information about the component, including item type, condition, authorization, and so on.

• View component names or labels. Choose to view the components on a page using the component name or the label that displays when you run the page. (for example, an item named P7_CUST_FIRST_NAME, but with the label First Name). See "Switching Between Names or Labels"

• Identification of conditions, authorizations, and build options. If a component has a condition, authorization, or build option, then the tree node label displays in italic.

• Direct access to default wizards. Each context menu includes actions that link to default wizards. For example, selecting Create Validation for an item displays the Create Validation Wizard.

To learn more, see, "Editing a Page in Tree View" and "Switching Between Tree and Component View".

About Component View

Component view groups user interface elements and application logic by component type.

Description of the illustration pg_def.gif

To edit a component, drill down on the component name or click the icons. To learn more, see "Editing a Page in Component View" and "Switching Between Tree and Component View".