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Backward Navigation
7
40 Genie Application Style Guide February 2001
Shared Feature Set: Backward Navigation
■ Always provide some kind of backward navigation.
■ Map backward navigation to the next highest or most intuitive menu when direct
backward navigation is not suitable.
Backward navigation is not always practical. For example, suppose the user confirms
an action, such as making a purchase or deleting an item. Pressing the Back key
should not take the user to the card confirming the purchase or the list with the deleted
item. Instead, the application should either return to the application’s home card, a
login card, or a card that intuitively lets the user continue through the application or
exit easily. Use
an <onevent type="onenterbackward"> task either to prevent
backward navigation or to take the user past screens they should not revisit.
<prev> element defined
with no label
<do type="prev">
<prev/>
</do>
Dedicated Back key
returns the user to the
previous card in the
history.
Back displays on the
right softkey and returns
the user to the previous
card in the history.
Right softkey, labelled prev or
Back, returns the user to the
previous card in the history.
Left scroll key returns user to the
previous card in the history.
<prev> element
defined with a label
<do type="prev"
label="Done">
<prev/>
</do>
Dedicated Back key
returns the user to the
previous card in the
history.
Back displays on the
right softkey and returns
the user to the previous
card in the history.
Defined label is ignored.
Right softkey labelled with the
assigned label and returns the
user to the previous card in the
history.
Left scroll key returns user to the
previous card in the history.
<do type="prev"
label="Done">
<go href="url"/>
</do>
Where url takes the
user to a defined URL
Dedicated Back key
sends the user to the
defined URL
Defined label displays
under the Options key
and sends the user to the
defined URL.
Note that if a Template
has been defined, then
the Back key may act a
<prev> action.
On some phones, if there is no
other
<do> element defined, the
Done label will appear on the left
softkey and send the user to the
defined URL. The right softkey
displays Back and returns the
user back in the history.
On other phones, the right hand
key will be labelled Done and
will send the user to the
defined URL.
Table 7-1. Summary of backward navigation behaviour (continued)
Openwave Browser Nokia 7110 Mitsubishi Trium