ioncore/ioncore_misc.lua

   1 --
   2 -- ion/share/ioncore_misc.lua
   3 --
   4 -- Copyright (c) Tuomo Valkonen 2004-2009.
   5 --
   6 -- See the included file LICENSE for details.
   7 --
   8
   9 local group_tmpl = { type="WGroupWS" }
  10
  11 local default_tmpl = { switchto=true }
  12
  13 local empty = { type="WGroupWS", managed={} }
  14
  15 local layouts={
  16     empty = empty,
  17     default = empty,
  18 }
  19
  20 --DOC
  21 -- Define a new workspace layout with name \var{name}, and
  22 -- attach/creation parameters given in \var{tab}. The layout
  23 -- "empty" may not be defined.
  24 function ioncore.deflayout(name, tab)
  25     assert(name ~= "empty")
  26
  27     if name=="default" and not tab then
  28         layouts[name] = empty
  29     else
  30         layouts[name] = table.join(tab, group_tmpl)
  31     end
  32 end
  33
  34 --DOC
  35 -- Get named layout (or all of the latter parameter is set,
  36 -- but this is for internal use only).
  37 function ioncore.getlayout(name, all)
  38     if all then
  39         return layouts
  40     else
  41         return layouts[name]
  42     end
  43 end
  44
  45 ioncore.set{_get_layout=ioncore.getlayout}
  46
  47 --DOC
  48 -- Create new workspace on screen \var{scr}. The table \var{tmpl}
  49 -- may be used to override parts of the layout named with \code{layout}.
  50 -- If no \var{layout} is given, "default" is used.
  51 function ioncore.create_ws(scr, tmpl, layout)
  52     local lo=ioncore.getlayout(layout or "default")
  53
  54     assert(lo, TR("Unknown layout"))
  55
  56     return scr:attach_new(table.join(tmpl or default_tmpl, lo))
  57 end
  58
  59
  60 --DOC
  61 -- Find an object with type name \var{t} managing \var{obj} or one of
  62 -- its managers.
  63 function ioncore.find_manager(obj, t)
  64     while obj~=nil do
  65         if obj_is(obj, t) then
  66             return obj
  67         end
  68         obj=obj:manager()
  69     end
  70 end
  71
  72
  73 --DOC
  74 -- gettext+string.format
  75 function ioncore.TR(s, ...)
  76     return string.format(ioncore.gettext(s), ...)
  77 end
  78
  79
  80 --DOC
  81 -- Attach tagged regions to \var{reg}. The method of attach
  82 -- depends on the types of attached regions and whether \var{reg}
  83 -- implements \code{attach_framed} and \code{attach}. If \var{param}
  84 -- is not set, the default of \verb!{switchto=true}! is used.
  85 -- The function returns \code{true} if all tagged regions were
  86 -- succesfully attached, and \code{false} otherwisse.
  87 function ioncore.tagged_attach(reg, param)
  88     local errors=false
  89     if not param then
  90         param={switchto=true}
  91     end
  92     local tagged=function() return ioncore.tagged_first(true) end
  93     for r in tagged do
  94         local fn=((not obj_is(r, "WWindow") and reg.attach_framed)
  95                   or reg.attach)
  96
  97         if not (fn and fn(reg, r, param)) then
  98             errors=true
  99         end
 100     end
 101     return not errors
 102 end
 103