Multi-selection list

Multi-selection lists are used when the purpose is to emphasize that it is possible to select several items from a list at the same time. Typically, there is an on-going operation that expects one or more items as input. An example of this is when the user is creating a group, and a list of names is offered as a multi-selection list.

In a multi-selection list, the user can browse the items and check and uncheck any number of them. The state of each item is indicated in a checkbox adjacent to the item. When the user accepts the list, information about the marked items is passed to the application.

Items are checked and unchecked using the Selection key, and the list is accepted with the left softkey Done/OK. Note that unlike in a markable list, the Options softkey is not available: one can only check and uncheck items and then accept or cancel the list.

Figure: Multi-selection lists: in the main pane (left) and in a setting editor (right)

The keypad functions for multi-selection lists are as follows:

**Table:** Default key event in multi-selection list
Key	Action
Arrow up / down	Moves the focus in the list.
Arrow left / right	Ignored (can be used to control tabs).
Selection key	Marks / unmarks the current item; toggle.
Left softkey (Done)	Accepts the list, passes the selections to the application.
Right softkey (Cancel)	Cancels the list, returns to the previous state.
Clear, Edit, Call creation	Ignored.
Numeric keypad	Ignored.
Other keys	Do the default action of the key.

**Table:** The default touch events for multi-selection list
User action	State change	Feedback
Touch down	No change	Highlight is shown. Tactile: Basic list effect and audio feedback is provided with touch down event.
Touch release	The item is marked/unmarked.	Highlight disappears. Tactile: Basic effect is provided with touch release event.
Touch down and hold	Inactive	Tactile: No effect
Touch down and move	No change	No change
Touch down, move and touch release within the list	Touch release after movement does not mark/unmark the item.	Tactile: .

Using multi-selection lists in applications

The API to use for multi-selection lists is the Lists API. For implementation information, see Using the Lists API.