Working prototype.

1 files changed, 15 insertions, 5 deletions

diff --git a/dalos.lua b/dalos.lua
index 237252c..7a15e7e 100644
--- a/dalos.lua
+++ b/dalos.lua
@@ -439,17 +439,27 @@ function activate_hv(self)
 end
 
 function input_change_hv(self, ind)
-    self.extra.hv:updatehandle(self.inputs[ind].obj.obj:getoutput(self.inputs[ind].ind))
+    local ni = self.inputs[ind]
+    if ni then
+        local ii = ni.ind
+        local io = ni.obj
+        self.extra.hv:updatehandle(io.obj:get_output(ii))
+    else
+        self.extra.hv:updatehandle(nil)
+    end
 end
 
+hv = iupe.hexview { }
+hvdlg = iup.dialog { iup.hbox{ iup.frame { hv }, iup.sbox { direction = "WEST", iupe.hexview_toolbox { hexview = hv, }, }, }, title = "Hexview" }
+
 extra = {
-    hv = iupe.hexview { },
-    hvdlg = iup.dialog { iup.hbox{ iup.frame { hv }, iup.sbox { direction = "WEST", iupe.hexview_toolbox { hexview = hv, }, }, }, title = "Hexview" }
+    hv = hv,
+    hvdlg = hvdlg,
 }
 
 o1 = dalos.object(d, { y = 30, x = 10, noutputs = 1, name = "Buffer 1", otype = dalos.objtype.HANDLE })
-o2 = dalos.object(d, { y = 30, x = 90, noutputs = 1, name = "Buffer 2", otype = dalos.objtype.HANDLE })
-h = dalos.object(d, { y = 120, x = 50, ninputs = 1, name = "Hexview", otype = dalos.objtype.LUA_VIEWER, activate = activate_hv, input_change = input_change_hv }, extra)
+o2 = dalos.object(d, { y = 120, x = 10, noutputs = 1, name = "Buffer 2", otype = dalos.objtype.HANDLE })
+h = dalos.object(d, { y = 60, x = 100, ninputs = 1, name = "Hexview", otype = dalos.objtype.LUA_VIEWER, activate = activate_hv, input_change = input_change_hv }, extra)
 
 o1:set_houtput(b1)
 o2:set_houtput(b2)