Hyprland workspaces "lastwindow" property is not updated when changing focus

[theoahfeldt]

AGS version: 1.8.2

I am using the built in hyprland service. When changing focus between windows on the same workspace in hyprland, the change is signaled in AGS, but the lastwindow property does not change. I believe this is a bug since using hyprctl will give the correct updated value. To illustrate:

const hyprland = await Service.import("hyprland")

const example = Widget.Box().hook(hyprland, () => {
    const workspaces = JSON.parse(Utils.exec("hyprctl workspaces -j"))
    for (const ws_ctl of workspaces) {
	const id = ws_ctl.id
	const ws_ags = hyprland.getWorkspace(id)
	print(`Workspace ${id} ctl lastwindow: ${ws_ctl.lastwindow}`)
	print(`Workspace ${id} ags lastwindow: ${ws_ags.lastwindow}\n`)
    }
})

App.config({
    windows: [ Widget.Window({ name: example }) ]
})

In this example, I expect that ws_ctl.lastwindow should be equal to ws_ags.lastwindow. However, when changing focus between the windows on my workspace, only ws_ctl.lastwindow will change. In contrast, ws_ags.lastwindow will only update after other actions like closing or opening a window.

It also seems that the same behavior is happening for client.focusHistoryID of AGS' hyprland service's client objects.

[theoahfeldt]

I took a quick look at the source code, and it seems that it is not updating workspaces or clients on the activewindow IPC event https://github.com/Aylur/ags/blob/main/src/service/hyprland.ts#L337.

Adding the following lines under this case would presumably solve the issue:

await this._syncClients(false);
await this._syncWorkspaces(false);
['clients', 'workspaces'].forEach(e => this.notify(e));