Lifecycle actions manager presentation by Yura Zenevich at ICCHP - International Conference on Computers Helping People with Special Needs in Linz, Austria.

1. Lifecycle Actions/Manager

2. Lifecycle Manager
● Starts and stops user sessions
● Keeps track of active sessions
● Saves the original state of the system
● Applies settings through Settings
Handlers
● Launches AT applications via
Lifecycle Actions (Launch Handlers)

3. Lifecycle Action
● Contains start and stop configurations
● Examples of the lifecycle actions:
○ exec (runs given command in shell)
○ "setSettings", "restoreSettings"

4. exec Lifecycle Action
{
start: [
{
type: 'gpii.launch.exec',
command: 'firefox'
}
],
stop: [
{
type: 'gpii.launch.exec',
command: 'pkill -2 firefox'
}
]
}

5. Settings handlers lifecycle actions
"setSettings" / "restoreSettings"
{
start: [
"setSettings",
{
type: 'gpii.launch.exec',
command: 'firefox'
}
],
stop: [
{
type: 'gpii.launch.exec',
command: 'pkill -2 firefox'
},
"restoreSettings"
]
}

6. Creating Lifecycle Action
Screen magnifier example
{
start: [
"setSettings", {
type: 'gpii.launch.exec',
command: 'gsettings set org.gnome.desktop.a11y.
applications screen-magnifier-enabled true'
}],
stop: [{
type: 'gpii.launch.exec',
command: 'gsettings set org.gnome.desktop.a11y.
applications screen-magnifier-enabled false'
}, "restoreSettings"]
}