gnome-shell/js/ui/components/__init__.js

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/* exported ComponentManager */
const Main = imports.ui.main;
var ComponentManager = class {
constructor() {
this._allComponents = {};
this._enabledComponents = [];
Main.sessionMode.connect('updated', this._sessionUpdated.bind(this));
this._sessionUpdated();
}
_sessionUpdated() {
let newEnabledComponents = Main.sessionMode.components;
newEnabledComponents.filter(
name => !this._enabledComponents.includes(name)
).forEach(name => {
this._enableComponent(name);
});
this._enabledComponents.filter(
name => !newEnabledComponents.includes(name)
).forEach(name => {
this._disableComponent(name);
});
this._enabledComponents = newEnabledComponents;
}
_importComponent(name) {
let module = imports.ui.components[name];
return module.Component;
}
_ensureComponent(name) {
let component = this._allComponents[name];
if (component)
return component;
if (Main.sessionMode.isLocked)
return null;
let constructor = this._importComponent(name);
component = new constructor();
this._allComponents[name] = component;
return component;
}
_enableComponent(name) {
let component = this._ensureComponent(name);
if (component)
component.enable();
}
_disableComponent(name) {
let component = this._allComponents[name];
if (component == null)
return;
component.disable();
}
};