Method _onScrollEvent

js/ui/workspacesView.js:1086–1098

(actor, event)

    }

    _onScrollEvent(actor, event) {
        if (this._swipeTracker.canHandleScrollEvent(event))
            return Clutter.EVENT_PROPAGATE;

        if (!this.mapped)
            return Clutter.EVENT_PROPAGATE;

        if (this._workspacesOnlyOnPrimary &&
            this._getMonitorIndexForEvent(event) !== this._primaryIndex)
            return Clutter.EVENT_PROPAGATE;

        return Main.wm.handleWorkspaceScroll(event);
    }

    _onKeyPressEvent(actor, event) {
        const {ControlsState} = OverviewControls;