Human Interface Guidelines/Activities/Activity Basics

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Starting Activities

Activities appear in the Actions section of the frame; starting an activity amounts to creating an active instance of it, represented in the activity ring. They can be started with a single click. An activity may also be directly manipulated; dragging an activity into the ring will also start it.

Visual cues differentiate between instances of an activity and the activity icon in the frame. Specifically, any activity installed on the system and appearing in the Actions edge is drawn as a white outline stroke, with no fill. Upon instantiation the icon receives a fill; both stroke and fill colors match the XO colors of the child who created it.

Private Activities

Newly created activity instances inherit the scope of the view in which they are created. This means that any activity started from the Home view begins as a private one by default. Children may later share private activities, opening them up to friends, classmates, or anyone on the mesh through an explicit invitation.

Shared Activities

Since newly created activities inherit the scope of the view, any activity started directly from the Friends view will be open for friends to participate. Implicit invitations are sent to all of the friends in the view, alerting them of the activity. Likewise, any activity started from the (unfiltered) Mesh view will be open to everyone on the mesh, although invitations are not sent.

The views provide scope for instantiating activities. For finer granularity, the search (located in the Frame) provides an incremental filtering system that enables arbitrary selection of scope. As a query is entered into the search field, the view—Friends or Mesh—dynamically updates to reveal the matching selection. Matches remain in color, while those filtered out appear with a white outline. The filter terms apply parameters such as the names of activities, the types of activities, the names of individuals, and the interests of individuals. For instance, a child could search for anyone who likes games before starting a new game of Memory, or everyone in her grade in a classroom setting, or a specific group of individuals by name. The results of the query become the scope for any new activity instance, and all XOs within that scope receive implicit invitations when an activity begins. These groupings may be saved as groups for future use.

Once a shared activity begins, the child who initiated the activity is taken into Activity view. Others who received invitations won't join the activity until they accept the invitation; white outline placeholders for their XO icons appear in the People section of the frame to indicate their potential arrival. If they accept an invitation, their XO fills with their colors; if they decline the outline disappears.

Joining Activities

Children will often find themselves joining activities already started by others. Activities can be discovered through search; searches may specify an activity name, an activity type, interests of individuals, and names of individuals. For instance, one could search for all activities that relate to music, or all activities that have participants who like camping, or all the active chat activities, or a few specific people by name. Once an appropriate activity is found, a single click on the activity icon will engage it.

Sharing Activities

Activities may begin as private, or private to a small group of individuals. There may be occasion to open up activities to a broader scope. For instance, a class may break into groups to work on a project within private group activities. At the end of the session, all groups may wish to open up their activities to the rest of the class for discussion and critique. Through selection in the activities contextual rollover, one may set the scope of people who may join an activity to one of Private, Friends, and Mesh, or a saved group.

A child may lock activities in a similar manner, tightening an activity's scope. Participants must leave on their own volition or at the request of others within the activity before locking it.

Switching Activities

The activity ring indicates the activities currently running on the laptop. From the Home view, a single click on any activity in the ring will select it as the active activity, automatically transitioning back to its Activity view. Keyboard shortcuts enable quick transitions among open activities.

Ending Activities

Ending an activity happens as easily as starting one. To complete the metaphor, dragging an activity out of the ring will end it. Selecting the End action in the activities contextual rollover will do likewise. Note that ending a shared activity—even one you started—does not necessarily "close" it. An activity instance remains active on the mesh as long as one or more individuals remain as participants.

Resuming Activities

In lieu of an "Open" command, one may simply resume an activity. If a drawing resides in the Journal, then resuming it will automatically restart the Draw activity, allowing modifications to that drawing. Due to the emphasis on collaborative activities, special consideration has to be given when resuming them; An activity fingerprint identifies a particular instance on the mesh. Resuming an activity implicitly invites all others who at one point participated in its creation that also remain within its currently specified scope. Additionally, cases may arise when an activity being resumed is already active on the mesh. In such cases, the child will automatically join the already active instance.

Activity Robustness

 All activities designed for the laptop should place a strong emphasis on robustness.  Two essential robustness
 considerations are input and network.

Invitations

Invitations perform an essential functionality in a computing environment that so strongly emphasizes collaborative learning and creation. For this reason, two forms of invitations are present in the OS: explicit and implicit.

Explicit Invitations

Explicit invitations are used to invite specific individuals into already active activities. The ability to send explicit invitations to others serves particular use when in a private activity, be it a private group or a solitary one. In these cases, an explicit invitation can extend the group by including one or more specific individuals, without opening up the activity to a broader scope.

A child may initiate an explicit invitation either from within the activity itself or by identifying an individual or group in either the Friends or Neighborhood views.

Implicit Invitations

Implicit invitations do not require specific action on the part of the child. These invitations to the appropriate individuals whenever actions suggest it, such as when starting an activity from the Friends or Neighborhood views. All individuals within the activity's scope receive implicit invitations to join. When an activity is resumed, those who participated previously receive an invitation.

Receiving Invitations

Incoming invitations appear within the Actions section of the Frame, adjacent to the installed activities; they are rendered in the color of the inviter. Rollover reveals both the name of the inviter as well as the name and type of the activity. On extended rollover, the options to accept and decline appear. There is an optional message back to the inviter upon declining and invitation.

Notifications

Notifications behave similarly to Invitations; they also appear in the Actions edge of the frame. However, unlike invitations, which are sent from people on the mesh, Notifications come from activities or directly from the system. As new notifications come in, they form a queue, with the most recent in the lower left-hand corner for quick access.

Sticky Notifications

By default, notifications will remain in the frame until the child acknowledges them.

Transient Notifications

Transient notifications alert a child when they arrive, but as they contain information that has a limited lifetime, they expire. Thus Activities may specify timeouts on notifications, after which they will automatically disappear.

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