Layouts, structure and navigation

Figure: Basic layout in full touch

LWUIT	LCDUI	Notes about the LWUIT implementation
	Status zone	Platform Status zone shown also in LWUIT applications. Provides access to the Notification bar.
TitleBar	Header Bar	Form title in lower case or application title, if Form title has not been defined. TitleBar cannot be an image. Action 1: Empty by default, but can be activated by defining the defaultcommand. Action 2: Always Options in Java applications.
ContentPane	Main zone	App content area. By default scrollable.
MenuBar	Bottom navigation zone	Only back button by default. LWUIT Tabs component can be placed next to the MenuBar. MenuBar can be replaced with the platform Category bar for Full Touch.

LWUIT	LCDUI	Notes about the LWUIT implementation
TitleBar	Status zone	Can be customized with colours and other branding elements. Optional; if not in use there is more real-estate for content. Non-interactive. Global status indicators are not shown within LWUIT applications. Contains Form TitleBar text or image.
ContentPane	Main zone	App content area. By default scrollable.
MenuBar	Softkey zone	2 or 3 softkeys. Access to Options menu.

Application structure in all Series 40 applications follows drill-down.
In full touch, tab navigation is introduced with the Category bar.
- Category bar disappears with drill down.
Backstepping is hierarchical (not historical).
- In drill-down structure, Back takes the user one hierarchical level up.
- In tab navigation, Back also functions hierarchically; note that it does not backstep to the previously accessed category but always up in hierarchy levels.
Back means Cancel.
- If the user has given input and leaves the screen with Back, the changes are not saved.
- Show a confirmation query to avoid losing any important data.