applicationElement & attributeValue has a delay for com.apple.WebKit.WebContent

[muescha]

Where:

• hs.axuielement.applicationElement
• hs.axuielement.applicationElementForPID
• and element:attributeValue()

where I see that the attributeValue takes the most time.

with:

• com.apple.WebKit.WebContent

I have an speedup with when I skip it:

    if app:bundleID() == "com.apple.WebKit.WebContent" then
        print(app:bundleID())
        print(app:name())
        print("=====> skip Web")
        return nil
    end

Apps which have a WebContent:

2024-12-01 15:07:50: com.apple.WebKit.WebContent
2024-12-01 15:07:50: Shortcat Web Content
2024-12-01 15:07:50: =====> skip Web
2024-12-01 15:07:50: com.apple.WebKit.WebContent
2024-12-01 15:07:50: Raycast Web Content
2024-12-01 15:07:50: =====> skip Web
2024-12-01 15:07:50: com.apple.WebKit.WebContent
2024-12-01 15:07:50: Raycast Web Content
2024-12-01 15:07:50: =====> skip Web
2024-12-01 15:07:50: com.apple.WebKit.WebContent
2024-12-01 15:07:50: Stats-Webinhalt
2024-12-01 15:07:50: =====> skip Web
2024-12-01 15:07:50: com.apple.WebKit.WebContent
2024-12-01 15:07:50: Stats-Webinhalt
2024-12-01 15:07:50: =====> skip Web
2024-12-01 15:07:50: com.apple.WebKit.WebContent
2024-12-01 15:07:50: Mountain Duck-Webinhalt
2024-12-01 15:07:50: =====> skip Web

My full Code:

local function findMenuExtrasMenuBarForApplication(app)

    if app:bundleID() == "com.apple.WebKit.WebContent" then
        print(app:bundleID())
        print(app:name())
        print("=====> skip Web")
        return nil
    end

    local appElement = axuielement.applicationElement(app)

    if appElement then
        local menuBar = appElement:attributeValue("AXExtrasMenuBar")
        if menuBar then
            return menuBar
        end
    end

    return nil
end


local function getMenuItemsForAllApps()

    local runningApplications = hs.application.runningApplications()

    local allMenuItems = {}

    for _, app in ipairs(runningApplications) do
        local children = findMenuExtrasMenuBarForApplication(app)
        if children then
            table.insert(allMenuItems, { app = app, children = children })
        end
    end
    return allMenuItems
end

[muescha]

I guess also the attributeNames in startAppWatcher in file hs.window.filter takes too much time, because skipping WebContent also speed it up:

Fix:
muescha/dot_hammerspoon@5c33399#diff-34576d415ad1a6785e8df2c0fc5cdc34c172da2f13f13baed8d4676108b4dd7dR1413

local function startAppWatcher(app,appname,retry,nologging,force)
  if not app or not appname then log.e('called startAppWatcher with no app') return end
  if apps[appname] then return not nologging and log.df('app %s already registered',appname) end
+ if app:bundleID() == "com.apple.WebKit.WebContent" then log.df('app %s is com.apple.WebKit.WebContent',appname) return end
  if app:kind()<0 or not windowfilter.isGuiApp(appname) then log.df('app %s has no GUI',appname) return end
  if not fnutils.contains(axuielement.applicationElement(app):attributeNames() or {}, "AXFocusedWindow") then
      log.df('app %s has no AXFocusedWindow element',appname)
      return
  end
[...]

Credits to: @avegetablechicken #3712

[muescha]

I would open an PR for window_filter.lua but I think looking in the root cause would be better:
why applicationElement and attributeNames and attributeValue are take longer time with WebContent apps?

[SilverEzhik]

I use this workaround for dealing with WebContent: #2943 (comment)

[muescha]

I seems a patch for window_filter.lua would be nice to have.

and a special PR to add a filter for a bundleID?

https://github.com/Hammerspoon/hammerspoon/blob/master/extensions/window/window_filter.lua#L103