Method monitorsChanged

tiling.js:2260–2422

The monitors-changed signal can trigger _many_ times when connection/disconnecting monitors. Monitors are now upgraded via a dbus proxy connector which upgrades Main.layoutManager.monitors with a "connector" property (e.g "eDP-1") which is more stable for restoring monit

()

       which is more stable for restoring monitor layouts.
     */
    monitorsChanged() {
        this.onlyOnPrimary = this.overrideSettings.get_boolean('workspaces-only-on-primary');
        this.monitors = new Map();

        // can be called async (after delay) on disable - use activeSpace as check
        if (!this.activeSpace) {
            return;
        }

        this.activeSpace.getWindows().forEach(w => {
            animateWindow(w);
        });

        this.spaceContainer.set_size(global.screen_width, global.screen_height);

        for (let overlay of this.clickOverlays) {
            overlay.destroy();
        }
        this.clickOverlays = [];
        let mru = this.mru();

        let primary = Main.layoutManager.primaryMonitor;
        if (!primary) {
            // setup periodic timout to call layout on all spaces 5 times (1 second apart)
            monitorChangeTimeout = Utils.periodic_timeout({
                count: 5,
                init: () => {
                    Utils.timeout_remove(monitorChangeTimeout);
                },
                callback: () => {
                    this?.forEach(s => s.layout());
                },
                onContinue: called => {
                    console.warn(`MONITORS_CHANGED: no primary monitor - 'layout' on spaces call ${called}`);
                },
                onComplete: () => {
                    monitorChangeTimeout = null;
                },
            });
            return;
        }

        // get monitors but ensure primary monitor is first
        let monitors = Main.layoutManager.monitors.filter(m => m !== primary);
        monitors.unshift(primary);

        for (let monitor of monitors) {
            let overlay = new ClickOverlay(monitor, this.onlyOnPrimary);
            monitor.clickOverlay = overlay;
            this.clickOverlays.push(overlay);
        }

        let finish = () => {
            /**
             * Gnome may select a workspace that just had it monitor removed (gone).
             * This this case find the next most recent space that's maintained it's
             * monitor, and select that.
             */