Feature: a message without an object says so

docs/src/projects.md

@@ -74,7 +74,9 @@ Several windows and agents can work on one project at once, also from a shared d
   frame in the participant's colour at the new place, a dashed ghost at the old one and a soft arc
   between them, a small chip with the name and the change ("claude · moved M2 by 12 mm"); new
   objects settle into a frame, removed ones leave a ghost. What an agent says it does next
-  (`announce(...; doing)`) appears as a bubble at its object. The cues fade after about 3 s. When an
+  (`announce(...; doing, selected_id)`) appears as a bubble at its object; one that names no object
+  of the window stands in the upper-left corner of the view and says "(no object)" after the name.
+  The cues fade after about 3 s. When an
   agent changes things faster than one can follow, the setup changes at once, but the cues play one
   after the other at a readable pace; more than 3 s behind, the waiting ones become one cue
   ("claude · 14 changes").

src/LiveActivityCues.jl

@@ -52,6 +52,8 @@ const _CHIP_CHARS = 56
 # A bubble: the bar of the colour at its left edge, its padding, the wrap of the message
 const _BUBBLE_BAR = 3.0f0
 const _BUBBLE_PAD = Vec2f(8, 5)
+# after the name in the bubble of a message without an object of the window, see `_new_bubble!`
+const _NO_OBJECT = " (no object)"
 const _BUBBLE_WRAP = 40
 const _BUBBLE_LINES = 3
 # z translation of the chips and bubbles: after the 3D scene and in front of it, below the cards
@@ -419,11 +421,13 @@ function _new_chip!(gui::LiveView, c::_CuePlots, d::_CueDrawn)
 end
 
 # Adds the plots of the bubble of the message of the cue `d`: a rounded box with the colour of the
-# participant as a bar at its left edge, the name in bold and the message below, wrapped
+# participant as a bar at its left edge, the name in bold and the message below, wrapped. A message
+# that names no object of the window stands in the corner of the view (see `_chip_anchor`) and says
+# so after the name
 function _new_bubble!(gui::LiveView, c::_CuePlots, d::_CueDrawn)
     ep = d.episode
     t = gui.layout.theme
-    name = _clip_text(ep.name, 24)
+    name = _clip_text(ep.name, 24) * (isempty(ep.items) ? _NO_OBJECT : "")
     lines = _wrap_text(ep.message)
     lh = _CHIP_FONTSIZE * _CHIP_LINEHEIGHT
     w = max(_chip_width(c, name; bold = true), maximum((_chip_width(c, l) for l in lines); init = 0.0f0))

test/TestLiveActivityCues.jl

@@ -190,17 +190,19 @@ const GUI = BeamletOpticsGUI
         @test d.bubble
         @test haskey(d.plots, :bar) && !haskey(d.plots, :dot)
         @test _rgb(d.plots[:bar].color[]) == _rgb(GUI._activity_color(gui, "bob@PC3"))
+        @test GUI._label_text(d.plots[:name]) == "Bob"
         lines = split(GUI._label_text(d.plots[:text]), '\n')
         @test length(lines) == GUI._BUBBLE_LINES
         @test all(l -> length(l) <= GUI._BUBBLE_WRAP, lines)
         @test endswith(lines[end], "…")
-        # a message without an object: at the corner of the view
+        # a message without an object: at the corner of the view, which its name says
         GUI._clear_cues!(gui)
         alone = _episode(GUI._ActivityItem[]; n = 3, who = "bob@PC3", name = "Bob", text = "", message = "back in 5")
         GUI._draw_cues!(gui, [(alone, 1.0)], 10.0)
         d = only(_drawn(gui))
         @test !isempty(d.plots)
         @test all(isfinite, d.pos[])
+        @test GUI._label_text(d.plots[:name]) == "Bob (no object)"
 
         # several cues at once at one object stack their chips
         GUI._clear_cues!(gui)