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[
{
"namespace": "aboutConfigPrefs",
"description": "experimental API extension to allow access to about:config preferences",
"events": [
{
"name": "onPrefChange",
"type": "function",
"parameters": [
{
"name": "name",
"type": "string",
"description": "The preference which changed"
}
],
"extraParameters": [
{
"name": "name",
"type": "string",
"description": "The preference to monitor"
}
]
}
],
"functions": [
{
"name": "getCheckableGlobalPrefs",
"type": "function",
"description": "Lists the global prefs the addon may read",
"parameters": [],
"returns": {
"type": "array",
"description": "The list of pref names.",
"items": {
"type": "string"
}
}
},
{
"name": "getPref",
"type": "function",
"description": "Get a preference's value",
"parameters": [
{
"name": "name",
"type": "string",
"description": "The preference name"
},
{
"name": "defaultValue",
"type": "boolean",
"optional": true,
"description": "Default value to return if the pref is not set"
}
],
"returns": {
"choices": [
{ "type": "boolean" },
{ "type": "integer" },
{ "type": "string" }
],
"optional": true,
"description": "returns the value of a pref."
}
}
]
}
]