Databases Reference
In-Depth Information
Limiting the display of the region to non-login pages is just a small example of what you can do with
conditions. The full capabilities of the Oracle PL/SQL engine are available for conditional logic on many of the APEX
components. Conditional logic can be very complex and comprehensive using combinations of functions, packages,
and SQL. It's recommended that you spend some time strategizing an approach to display conditions and security
functions when designing a complex application. If the same conditional logic will be used repeatedly, it may be a
good idea to create a utility package with functions to be called in several places. Thus, maintenance of the logic can
be done in a single place.
Template Positions
In the previous section, you chose Region Position 3 when selecting the location of the region. This location was
based on knowledge of the theme and template you chose at the beginning of the example application. When you're
working with another theme, it may be desirable to see where the regions are placed. APEX has a utility that displays
approximate region placement and allows quick selection of display points.
To get a preview of display points in a page template, follow these steps:
1.
Navigate to the edit screen of any region.
2.
In the
User Interface
section, locate the
Display Point
.
3.
Click the
flashlight
to the right of the drop-down, as shown in Figure
5-60
.
Figure 5-60.
Location of the display point flashlight
4.
In the resulting pop-up window shown in Figure
5-61
, click the name of a display position.
Be aware that the positions are specific to the page template. There can be more than one
page template per application.
