Remove gs parts of the debugger

1 files changed, 0 insertions, 1595 deletions

diff --git a/lib/debugger/src/dbg_ui_trace_win.erl b/lib/debugger/src/dbg_ui_trace_win.erl
deleted file mode 100644
index beb3fbd71e..0000000000
--- a/lib/debugger/src/dbg_ui_trace_win.erl
+++ /dev/null
@@ -1,1595 +0,0 @@
-%%
-%% %CopyrightBegin%
-%%
-%% Copyright Ericsson AB 1997-2012. All Rights Reserved.
-%%
-%% The contents of this file are subject to the Erlang Public License,
-%% Version 1.1, (the "License"); you may not use this file except in
-%% compliance with the License. You should have received a copy of the
-%% Erlang Public License along with this software. If not, it can be
-%% retrieved online at http://www.erlang.org/.
-%%
-%% Software distributed under the License is distributed on an "AS IS"
-%% basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
-%% the License for the specific language governing rights and limitations
-%% under the License.
-%%
-%% %CopyrightEnd%
-%%
--module(dbg_ui_trace_win).
--compile([{nowarn_deprecated_function,{gs,button,2}},
-          {nowarn_deprecated_function,{gs,button,3}},
-          {nowarn_deprecated_function,{gs,checkbutton,2}},
-          {nowarn_deprecated_function,{gs,config,2}},
-          {nowarn_deprecated_function,{gs,create,4}},
-          {nowarn_deprecated_function,{gs,destroy,1}},
-          {nowarn_deprecated_function,{gs,editor,2}},
-          {nowarn_deprecated_function,{gs,editor,3}},
-          {nowarn_deprecated_function,{gs,entry,2}},
-          {nowarn_deprecated_function,{gs,entry,3}},
-          {nowarn_deprecated_function,{gs,frame,3}},
-          {nowarn_deprecated_function,{gs,grid,3}},
-          {nowarn_deprecated_function,{gs,gridline,2}},
-          {nowarn_deprecated_function,{gs,label,2}},
-          {nowarn_deprecated_function,{gs,label,3}},
-          {nowarn_deprecated_function,{gs,menubar,2}},
-          {nowarn_deprecated_function,{gs,read,2}},
-          {nowarn_deprecated_function,{gs,window,2}},
-          {nowarn_deprecated_function,{gs,window,3}}]).
-
-%% External exports
--export([init/0]).
--export([create_win/4, get_window/1,
-	 configure/2,
-	 enable/2, is_enabled/1, select/2,
-	 add_break/3, update_break/2, delete_break/2,
-	 clear_breaks/1, clear_breaks/2,
-	 display/1,                                   % Help messages
-	 is_shown/2,                                  % Code area
-	 show_code/3, show_no_code/1, remove_code/2,      
-	 mark_line/3, unmark_line/1,
-	 select_line/2, selected_line/1,
-	 eval_output/2,                               % Evaluator area
-	 update_bindings/1,                           % Bindings area
-	 trace_output/1,                              % Trace area
-	 handle_event/2
-	]).
--export([helpwin/4,                                   % Help windows
-	 helpwin/5]).
-
--record(breakInfo, {point, status, break}).
--record(winInfo, {window,          % gsobj()
-		  size,            % {W, H}
-		  flags,           % {F,F,F,F} F = open|close
-
-		  marked_line=0,   % integer() Current line
-		  selected_line=0, % integer() Selected line
-
-		  breaks=[],       % [#breakInfo{}] Known breakpoints
-
-		  editor,          % {Mod, Editor}  Visible code editor
-		  editors=[]       % [{Mod,Editor}] Code editors
-		 }).
-
-
-%%====================================================================
-%% External exports
-%%====================================================================
-
-%%--------------------------------------------------------------------
-%% init() -> GS
-%%   GS = term()
-%%--------------------------------------------------------------------
-init() ->
-    dbg_ui_win:init().
-
-%%--------------------------------------------------------------------
-%% create_win(GS, Title, TraceWin, Menus) -> #winInfo{}
-%%  GS = gsobj()
-%%  Title = string()
-%%  TraceWin = [WinArea]
-%%    WinArea = 'Button|Evaluator|Bindings|Trace Area'
-%%  Menus = [menu()]  See dbg_ui_win.erl
-%%--------------------------------------------------------------------
-create_win(GS, Title, TraceWin, Menus) ->
-    Bu = flip(lists:member('Button Area', TraceWin)),
-    Ev = flip(lists:member('Evaluator Area', TraceWin)),
-    Bi = flip(lists:member('Bindings Area', TraceWin)),
-    Tr = flip(lists:member('Trace Area', TraceWin)),
-    
-    Win = gs:window(trace_window, GS, [{title, Title},
-				       {width, 550},
-				       {configure,true}, {destroy,true},
-				       {keypress,true}, {motion,true}]),
-
-    MenuBar = gs:menubar(Win, []),
-    dbg_ui_win:create_menus(MenuBar, Menus),
-    dbg_ui_winman:windows_menu(MenuBar),
-
-    FrameOpts = [{anchor,nw}, {relief,raised}, {bw,2}, {keypress,true}],
-    Editor = code_area(2, 25, FrameOpts, Win),
-    button_area(Bu, 2, 235, FrameOpts, Win),
-    eval_area({Ev,Bi}, 2, 265, FrameOpts, Win),
-    bind_area({Ev,Bi}, 300, 265, FrameOpts, Win),
-    trace_area(Tr, 2, 475, FrameOpts, Win),
-
-    Flags = {Bu, Ev, Bi, Tr},
-    resizebar(rb1(Flags), 'RB1',   2, 225, 710,  10, Win),
-    resizebar(rb2(Flags), 'RB2',   2, 465, 710,  10, Win),
-    resizebar(rb3(Flags), 'RB3', 290, 265,  10, 200, Win),
-    config_v(),
-    config_h(),
-    
-    gs:config(Win,{height,
-		   25 +
-		   gs:read('CodeArea', height) +
-		   gs:read('RB1', height) +
-		   gs:read('ButtonArea', height) +
-		   erlang:max(gs:read('EvalArea', height),
-		       gs:read('BindArea', height)) +
-		   gs:read('RB2', height) +
-		   gs:read('TraceArea', height)}),
-    
-    gs:config(Win, {map, true}),
-    #winInfo{window=Win, size={gs:read(Win,width), gs:read(Win,height)},
-	     flags=Flags,
-	     editor={'$top', Editor}, editors=[{'$top', Editor}]}.
-
-flip(true) -> open;
-flip(false) -> close.
-    
-%%--------------------------------------------------------------------
-%% get_window(WinInfo) -> Window
-%%   WinInfo = #winInfo{}
-%%   Window = gsobj()
-%%--------------------------------------------------------------------
-get_window(WinInfo) ->
-    WinInfo#winInfo.window.
-
-%%--------------------------------------------------------------------
-%% configure(WinInfo, TraceWin) -> WinInfo
-%%   WinInfo = #winInfo{}
-%%  TraceWin = [WinArea]
-%%    WinArea = 'Button|Evaluator|Bindings|Trace Area'
-%% Window areas should be opened or closed.
-%%--------------------------------------------------------------------
-configure(WinInfo, TraceWin) ->
-    {Bu1, Ev1, Bi1, Tr1} = OldFlags = WinInfo#winInfo.flags,
-    Bu2 = flip(lists:member('Button Area', TraceWin)),
-    Ev2 = flip(lists:member('Evaluator Area', TraceWin)),
-    Bi2 = flip(lists:member('Bindings Area', TraceWin)),
-    Tr2 = flip(lists:member('Trace Area', TraceWin)),
-    NewFlags = {Bu2, Ev2, Bi2, Tr2},
-
-    Win = WinInfo#winInfo.window,
-    W = gs:read(Win, width),
-    H = gs:read(Win, height),
-
-    H2 = if
-	     Bu1 =:= close, Bu2 =:= open ->
-		 resize_button_area(open, width, W-4),
-		 gs:config('ButtonArea', {height, 30}),
-		 H+30;
-	     Bu1 =:= open, Bu2 =:= close ->
-		 gs:config('ButtonArea', [{width, 0}, {height, 0}]),
-		 H-30;
-	     true -> H
-	 end,
-    H3 = if
-	     Ev1 =:= close, Ev2 =:= open, Bi1 =:= open ->
-		 Wnew1 = round((W-10-4)/2), % W = window/2 - rb - pads
-		 Hbi1 = gs:read('BindArea', height), % H = bind area h
-		 resize_eval_area(open, width, Wnew1),
-		 resize_eval_area(open, height, Hbi1),
-		 gs:config('RB3', {width, 10}),
-		 gs:config('RB3', {height, Hbi1}),
-		 resize_bind_area(open, width,
-				  Wnew1-gs:read('BindArea', width)),
-		 H2;
-	     Ev1 =:= close, Ev2 =:= open, Bi1 =:= close ->
-		 resize_eval_area(open, width, W-4),
-		 resize_eval_area(open, height, 200),
-		 H2+200;
-	     Ev1 =:= open, Ev2 =:= close, Bi1 =:= open ->
-		 gs:config('EvalArea', [{width,0}, {height,0}]),
-		 gs:config('RB3', [{width, 0}, {height, 0}]),
-		 Wnew2 = W-4,
-		 resize_bind_area(open, width,
-				  Wnew2-gs:read('BindArea', width)),
-		 H2;
-	     Ev1 =:= open, Ev2 =:= close, Bi1 =:= close ->
-		 Hs1 = gs:read('EvalArea', height),
-		 gs:config('EvalArea', [{width, 0}, {height, 0}]),
-		 H2-Hs1;
-	     true -> H2
-	 end,
-    H4 = if
-	     Bi1 =:= close, Bi2 =:= open, Ev2 =:= open ->
-		 Wnew3 = round((W-10-4)/2), % W = window/2 - rb - pads
-		 Hs2 = gs:read('EvalArea', height), % H = eval area h
-		 resize_bind_area(open, width, Wnew3),
-		 resize_bind_area(open, height, Hs2),
-		 gs:config('RB3', [{width,10},{height,Hs2}]),
-		 resize_eval_area(open, width,
-				  Wnew3-gs:read('EvalArea', width)),
-		 H3;
-	     Bi1 =:= close, Bi2 =:= open, Ev2 =:= close ->
-		 resize_bind_area(open, width, W-4),
-		 resize_bind_area(open, height, 200),
-		 H3+200;
-	     Bi1 =:= open, Bi2 =:= close, Ev2 =:= open ->
-		 gs:config('BindArea', [{width, 0}, {height, 0}]),
-		 gs:config('RB3', [{width, 0}, {height, 0}]),
-		 Wnew4 = W-4,
-		 resize_eval_area(open, width,
-				  Wnew4-gs:read('EvalArea', width)),
-		 H3;
-	     Bi1 =:= open, Bi2 =:= close, Ev2 =:= close ->
-		 Hbi2 = gs:read('BindArea', height),
-		 gs:config('BindArea', [{width, 0}, {height, 0}]),
-		 H3-Hbi2;
-	     true -> H3
-	 end,
-    H5 = if
-	     Tr1 =:= close, Tr2 =:= open ->
-		 resize_trace_area(open, width, W-4),
-		 resize_trace_area(open, height, 200),
-		 H4+200;
-	     Tr1 =:= open, Tr2 =:= close ->
-		 Hf = gs:read('TraceArea', height),
-		 gs:config('TraceArea', [{width, 0}, {height, 0}]),
-		 H4-Hf;
-	     true -> H4
-	 end,
-    gs:config(Win, {height, H5}),
-
-    RB1old = rb1(OldFlags), RB1new = rb1(NewFlags),
-    if
-	RB1old =:= close, RB1new =:= open ->
-	    gs:config('RB1', [{width, W-4}, {height, 10}]),
-	    gs:config(Win, {height, gs:read(Win, height)+10});
-	RB1old =:= open, RB1new =:= close ->
-	    gs:config('RB1', [{width, 0}, {height, 0}, lower]),
-	    gs:config(Win, {height, gs:read(Win, height)-10});
-	true -> ignore
-    end,
-
-    RB2old = rb2(OldFlags), RB2new = rb2(NewFlags),
-    if
-	RB2old =:= close, RB2new =:= open ->
-	    gs:config('RB2', [{width, W-4}, {height, 10}]),
-	    gs:config(Win, {height,gs:read(Win, height)+10});
-	RB2old =:= open, RB2new =:= close ->
-	    gs:config('RB2', [{width, 0}, {height, 0}, lower]),
-	    gs:config(Win, {height, gs:read(Win, height)-10});
-	true -> ignore
-    end,
-    config_v(),
-    config_h(),
-
-    flush_configure(),
-    
-    WinInfo#winInfo{size={gs:read(Win, width), gs:read(Win, height)},
-		    flags=NewFlags}.
-
-flush_configure() ->
-    receive
-	{gs, _Id, configure, _Data, _Arg} ->
-	    flush_configure()
-    after 100 ->
-	    true
-    end.
-
-%%--------------------------------------------------------------------
-%% enable([MenuItem], Bool)
-%% is_enabled(MenuItem) -> Bool
-%%   MenuItem = atom()
-%%   Bool = boolean()
-%%--------------------------------------------------------------------
-enable(MenuItems, Bool) ->
-    lists:foreach(fun(MenuItem) ->
-			  gs:config(MenuItem, {enable, Bool}),
-			  case is_button(MenuItem) of
-			      {true, Button} ->
-				  gs:config(Button, {enable, Bool});
-			      false -> ignore
-			  end
-		  end,
-		  MenuItems).
-
-is_enabled(MenuItem) ->
-    gs:read(MenuItem, enable).
-
-%%--------------------------------------------------------------------
-%% select(MenuItem, Bool)
-%%   MenuItem = atom()
-%%   Bool = boolean()
-%%--------------------------------------------------------------------
-select(MenuItem, Bool) ->
-    dbg_ui_win:select(MenuItem, Bool).
-
-%%--------------------------------------------------------------------
-%% add_break(WinInfo, Name, {Point, Options}) -> WinInfo
-%%   WinInfo = #winInfo{}
-%%   Name = atom() Menu name
-%%   Point = {Mod, Line}
-%%   Options = [Status, Action, Mods, Cond]
-%%     Status = active | inactive
-%%     Action = enable | disable | delete
-%%     Mods = null (not used)
-%%     Cond = null | {Mod, Func}
-%%--------------------------------------------------------------------
-add_break(WinInfo, Menu, {{Mod,Line},[Status|_Options]}=Break) ->
-    case lists:keyfind(Mod, 1, WinInfo#winInfo.editors) of
-	{Mod, Editor} ->
-	    add_break_to_code(Editor, Line, Status);
-	false -> ignore
-    end,
-    add_break_to_menu(WinInfo, Menu, Break).
-
-add_break_to_code(Editor, Line, Status) ->
-    Color = if Status =:= active -> red; Status =:= inactive -> blue end,
-    config_editor(Editor, [{overwrite,{{Line,0},"-@-  "}},
-			   {fg,{{{Line,0},{Line,lineend}}, Color}}]).
-
-add_break_to_menu(WinInfo, Menu, {Point, [Status|_Options]=Options}) ->
-    Break = dbg_ui_win:add_break(Menu, Point),
-    dbg_ui_win:update_break(Break, Options),
-    BreakInfo = #breakInfo{point=Point, status=Status, break=Break},
-    WinInfo#winInfo{breaks=[BreakInfo|WinInfo#winInfo.breaks]}.
-
-%%--------------------------------------------------------------------
-%% update_break(WinInfo, {Point, Options}) -> WinInfo
-%%   WinInfo = #winInfo{}
-%%   Point = {Mod, Line}
-%%   Options = [Status, Action, Mods, Cond]
-%%     Status = active | inactive
-%%     Action = enable | disable | delete
-%%     Mods = null (not used)
-%%     Cond = null | {Mod, Func}
-%%--------------------------------------------------------------------
-update_break(WinInfo, {{Mod,Line},[Status|_Options]}=Break) ->
-    case lists:keyfind(Mod, 1, WinInfo#winInfo.editors) of
-	{Mod, Editor} ->
-	    add_break_to_code(Editor, Line, Status);
-	false -> ignore
-    end,
-    update_break_in_menu(WinInfo, Break).
-
-update_break_in_menu(WinInfo, {Point, [Status|_Options]=Options}) ->
-    {value, BreakInfo} = lists:keysearch(Point, #breakInfo.point,
-					 WinInfo#winInfo.breaks),
-    dbg_ui_win:update_break(BreakInfo#breakInfo.break, Options),
-    BreakInfo2 = BreakInfo#breakInfo{status=Status},
-    WinInfo#winInfo{breaks=lists:keyreplace(Point, #breakInfo.point,
-					    WinInfo#winInfo.breaks,
-					    BreakInfo2)}.
-
-%%--------------------------------------------------------------------
-%% delete_break(WinInfo, Point) -> WinInfo
-%%   WinInfo = #winInfo{}
-%%   Point = {Mod, Line}
-%%--------------------------------------------------------------------
-delete_break(WinInfo, {Mod,Line}=Point) ->
-    case lists:keyfind(Mod, 1, WinInfo#winInfo.editors) of
-	{Mod, Editor} -> delete_break_from_code(Editor, Line);
-	false -> ignore
-    end,
-    delete_break_from_menu(WinInfo, Point).
-
-delete_break_from_code(Editor, Line) ->
-    Prefix = string:substr(integer_to_list(Line)++":   ", 1, 5),
-    config_editor(Editor, [{overwrite,{{Line,0},Prefix}},
-			   {fg,{{{Line,0},{Line,lineend}}, black}}]).
-
-delete_break_from_menu(WinInfo, Point) ->
-    {value, BreakInfo} = lists:keysearch(Point, #breakInfo.point,
-					 WinInfo#winInfo.breaks),
-    dbg_ui_win:delete_break(BreakInfo#breakInfo.break),
-    WinInfo#winInfo{breaks=lists:keydelete(Point, #breakInfo.point,
-					   WinInfo#winInfo.breaks)}.
-
-%%--------------------------------------------------------------------
-%% clear_breaks(WinInfo) -> WinInfo
-%% clear_breaks(WinInfo, Mod) -> WinInfo
-%%   WinInfo = #winInfo{}
-%%--------------------------------------------------------------------
-clear_breaks(WinInfo) ->
-    clear_breaks(WinInfo, all).
-clear_breaks(WinInfo, Mod) ->
-    Remove = if
-		 Mod =:= all -> WinInfo#winInfo.breaks;
-		 true ->
-		     lists:filter(fun(#breakInfo{point={Mod2,_L}}) ->
-					  if
-					      Mod2 =:= Mod -> true;
-					      true -> false
-					  end
-				  end,
-				  WinInfo#winInfo.breaks)
-	     end,
-    lists:foreach(fun(#breakInfo{point=Point}) ->
-			  delete_break(WinInfo, Point)
-		  end,
-		  Remove),
-    Remain = WinInfo#winInfo.breaks -- Remove,
-    WinInfo#winInfo{breaks=Remain}.
-
-%%--------------------------------------------------------------------
-%% display(Arg)
-%%   Arg = idle | {Status,Mod,Line} | {running,Mod}
-%%       | {exit,Where,Reason} | {text,Text}
-%%     Status = break | wait | Level
-%%       Level = int()
-%%     Mod = atom()
-%%     Line = integer()
-%%     Where = {Mod,Line} | null
-%%     Reason = term()
-%%     Text = string()
-%%--------------------------------------------------------------------
-display(Arg) ->
-    Str = case Arg of
-	      idle -> "State: uninterpreted";
-	      {exit, {Mod,Line}, Reason} ->
-		  gs:config(trace_window, raise),
-		  io_lib:format("State: EXITED [~w.erl/~w], Reason:~w",
-				[Mod, Line, Reason]);
-	      {exit, null, Reason} ->
-		  gs:config(trace_window, raise),
-		  io_lib:format("State: EXITED [uninterpreted], "
-				"Reason:~w", [Reason]);
-	      {Level, null, _Line} when is_integer(Level) ->
-		  io_lib:format("*** Call level #~w "
-				"(in non-interpreted code)",
-				[Level]);
-	      {Level, Mod, Line} when is_integer(Level) ->
-		  io_lib:format("*** Call level #~w [~w.erl/~w]",
-				[Level, Mod, Line]);
-	      {Status, Mod, Line} ->
-		  What = case Status of
-			     wait -> 'receive';
-			     _ -> Status
-			 end,
-		  io_lib:format("State: ~w [~w.erl/~w]",
-				[What, Mod, Line]);
-	      {running, Mod} ->
-		  io_lib:format("State: running [~w.erl]", [Mod]);
-	      {text, Text}  -> Text
-	  end,
-    gs:config(info_window, {label,{text,lists:flatten(Str)}}).
-
-%%--------------------------------------------------------------------
-%% is_shown(WinInfo, Mod) -> {true, WinInfo} | false
-%% show_code(WinInfo, Mod, Contents) -> WinInfo
-%% show_no_code(WinInfo) -> WinInfo
-%% remove_code(WinInfo, Mod) -> WinInfo
-%%   WinInfo = #winInfo{}
-%%   Mod = atom()
-%%   Contents = string()
-%% Note: remove_code/2 should not be used for currently shown module.
-%%--------------------------------------------------------------------
-is_shown(WinInfo, Mod) ->
-    case lists:keyfind(Mod, 1, WinInfo#winInfo.editors) of
-	{Mod, Editor} ->
-	    gs:config(Editor, raise),
-	    {true, WinInfo#winInfo{editor={Mod, Editor}}};
-	false -> false
-    end.
-
-show_code(WinInfo, Mod, Contents) ->
-    Editors = WinInfo#winInfo.editors,
-    {Flag, Editor} = case lists:keyfind(Mod, 1, Editors) of
-			 {Mod, Ed} -> {existing, Ed};
-			 false -> {new, code_editor()}
-		     end,
-    %% Insert code and update breakpoints, if any
-    config_editor(Editor, [raise, clear]),
-    show_code(Editor, Contents),
-    lists:foreach(fun(BreakInfo) ->
-			  case BreakInfo#breakInfo.point of
-			      {Mod2, Line} when Mod2 =:= Mod ->
-				  Status = BreakInfo#breakInfo.status,
-				  add_break_to_code(Editor, Line,Status);
-			      _Point -> ignore
-			  end
-		  end,
-		  WinInfo#winInfo.breaks),
-    case Flag of
-	existing ->
-	    WinInfo#winInfo{editor={Mod, Editor}};
-	new ->
-	    WinInfo#winInfo{editor={Mod, Editor},
-			    editors=[{Mod, Editor} | Editors]}
-    end.
-	
-show_code(Editor, Text) when length(Text) > 1500 ->
-    %% Add some text at a time so that other processes may get scheduled
-    Str = string:sub_string(Text, 1, 1500),
-    config_editor(Editor, {insert,{'end', Str}}),
-    show_code(Editor, string:sub_string(Text, 1501));
-show_code(Editor, Text) ->
-    config_editor(Editor, {insert,{'end',Text}}).
-
-show_no_code(WinInfo) ->
-    {'$top', Editor} = lists:keyfind('$top', 1, WinInfo#winInfo.editors),
-    gs:config(Editor, raise),
-    WinInfo#winInfo{editor={'$top', Editor}}.
-
-remove_code(WinInfo, Mod) ->
-    Editors = WinInfo#winInfo.editors,
-    case lists:keyfind(Mod, 1, Editors) of
-	{Mod, Editor} ->
-	    gs:destroy(Editor),
-	    WinInfo#winInfo{editors=lists:keydelete(Mod, 1, Editors)};
-	false ->
-	    WinInfo
-    end.
-
-%%--------------------------------------------------------------------
-%% mark_line(WinInfo, Line, How) -> WinInfo
-%%   WinInfo = #winInfo{}
-%%   Line = integer()
-%%   How = break | where
-%% Mark the code line where the process is executing.
-%%--------------------------------------------------------------------
-mark_line(WinInfo, Line, How) ->
-    {_Mod, Editor} = WinInfo#winInfo.editor,
-    mark_line2(Editor, WinInfo#winInfo.marked_line, false),
-    mark_line2(Editor, Line, How),
-    if
-	Line =/= 0 -> config_editor(Editor, {vscrollpos, Line-5});
-	true -> ignore
-    end,
-    WinInfo#winInfo{marked_line=Line}.
-
-unmark_line(WinInfo) ->
-    mark_line(WinInfo, 0, false).
-
-mark_line2(Editor, Line, How) ->
-    Prefix = case How of
-		 break -> "-->";
-		 where -> ">>>";
-		 false -> "   "
-	     end,
-    Font = if
-	       How =:= false -> dbg_ui_win:font(normal);
-	       true -> dbg_ui_win:font(bold)
-	   end,
-    config_editor(Editor, [{overwrite, {{Line,5}, Prefix}},
-			   {font_style,
-			    {{{Line,0},{Line,lineend}}, Font}}]).
-
-%%--------------------------------------------------------------------
-%% select_line(WinInfo, Line) -> WinInfo
-%% selected_line(WinInfo) -> undefined | Line
-%%   WinInfo = #winInfo{}
-%%   Line = integer()
-%% Select/unselect a line (unselect if Line=0).
-%%--------------------------------------------------------------------
-select_line(WinInfo, Line) ->
-    {_Mod, Editor} = WinInfo#winInfo.editor,
-
-    %% Since 'Line' may be specified by the user in the 'Go To Line'
-    %% help window, it must be checked that it is correct
-    Size = gs:read(Editor, size),
-    if
-	Line =:= 0 ->
-	    select_line(Editor, WinInfo#winInfo.selected_line, false),
-	    WinInfo#winInfo{selected_line=0};
-	Line < Size ->
-	    select_line(Editor, Line, true),
-	    config_editor(Editor, {vscrollpos, Line-5}),
-	    WinInfo#winInfo{selected_line=Line};
-	true ->
-	    WinInfo
-    end.
-
-select_line(Editor, Line, true) ->
-    config_editor(Editor, {selection, {{Line,0}, {Line,lineend}}});
-select_line(Editor, _Line, false) ->
-    config_editor(Editor, {selection, {{1,0}, {1,0}}}).
-
-selected_line(WinInfo) ->
-    case WinInfo#winInfo.selected_line of
-	0 -> undefined;
-	Line -> Line
-    end.
-
-%%--------------------------------------------------------------------
-%% eval_output(Str, Face)
-%%   Str = string()
-%%   Face = normal | bold
-%%--------------------------------------------------------------------
-eval_output(Text, Face) ->
-    Y1 = gs:read('EvalEditor', size),
-    config_editor('EvalEditor', {insert,{'end',Text}}),
-    Y2 = gs:read('EvalEditor', size),
-
-    Font = dbg_ui_win:font(Face),
-    config_editor('EvalEditor',
-		  [{font_style, {{{Y1,0},{Y2,lineend}}, Font}},
-		   {vscrollpos,Y2}]).
-
-%%--------------------------------------------------------------------
-%% update_bindings(Bs)
-%%   Bs = [{Var,Val}]
-%%--------------------------------------------------------------------
-update_bindings(Bs) ->
-    gs:config('BindGrid', {rows, {1,length(Bs)+1}}),
-    Font = dbg_ui_win:font(normal),
-    Last =
-	lists:foldl(fun({Var, Val}, Row) ->
-			    Opts = [{text, {1,atom_to_list(Var)}},
-				    {text, {2,io_lib:format("~P",
-							    [Val, 4])}},
-				    {doubleclick, true},
-				    {data, {binding,{Var,Val}}}],
-			    case gs:read('BindGrid',{obj_at_row,Row}) of
-				undefined ->
-				    gs:gridline('BindGrid',
-						[{row, Row},
-						 {height, 14},
-						 {font, Font} | Opts]);
-				GridLine ->
-				    gs:config(GridLine, Opts)
-			    end,
-			    Row+1
-		    end,
-		    2,
-		    Bs),
-    delete_gridlines(Last).
-
-delete_gridlines(Row) -> 
-    case gs:read('BindGrid', {obj_at_row, Row}) of
-	undefined -> true;
-	GridLine ->
-	    gs:destroy(GridLine),
-	    delete_gridlines(Row+1)
-    end.
-
-%%--------------------------------------------------------------------
-%% trace_output(Str)
-%%   Str = string()
-%%--------------------------------------------------------------------
-trace_output(Str) ->
-    Font = dbg_ui_win:font(normal),
-    config_editor('TraceEditor',
-		  [{insert, {'end',Str}},
-		   {fg, {{{1,0},'end'},black}},
-		   {font_style, {{{1,0},'end'},Font}}]),
-    Max = gs:read('TraceEditor', size),
-    config_editor('TraceEditor', {vscrollpos, Max}).
-    
-%%--------------------------------------------------------------------
-%% handle_event(GSEvent, WinInfo) -> Command
-%%   GSEvent = {gs, Id, Event, Data, Arg}
-%%   WinInfo = #winInfo{}
-%%   Command = ignore
-%%           | {win, WinInfo}
-%%           | stopped
-%%           | {coords, {X,Y}}
-%%
-%%           | {shortcut, Key}
-%%           | MenuItem | {Menu, [MenuItem]}
-%%               MenuItem = Menu = atom()
-%%           | {break, Point, What}
-%%               What = add | delete | {status,Status} |{trigger,Trigger}
-%%           | {module, Mod, view}
-%%
-%%           | {user_command, Cmd}
-%%
-%%           | {edit, {Var, Val}}
-%%--------------------------------------------------------------------
-%% Window events
-handle_event({gs, _Id, configure, _Data, [W, H|_]}, WinInfo) ->
-    case WinInfo#winInfo.size of
-	{W, H} -> ignore;
-	_Size ->
-	    configure(WinInfo, W, H),
-	    {win, WinInfo#winInfo{size={W, H}}}
-    end;
-handle_event({gs, _Id, destroy, _Data, _Arg}, _WinInfo) ->
-    stopped;
-handle_event({gs, _Id, motion, _Data, [X,Y]}, WinInfo) ->
-    {LastX, LastY} = dbg_ui_win:motion(X, Y),
-    Win = WinInfo#winInfo.window,
-    {coords, {gs:read(Win, x)+LastX-5, gs:read(Win, y)+LastY-5}};
-handle_event({gs, RB, buttonpress, resizebar, _Arg}, WinInfo) ->
-    resize(WinInfo, RB), % Resize window contents
-    ignore;
-
-%% Menus, buttons and keyboard shortcuts
-handle_event({gs, _Id, keypress, _Data, [Key,_,_,1]}, _WinInfo) ->
-    {shortcut, Key};
-handle_event({gs, _Id, click, {dbg_ui_winman, Win}, _Arg}, _WinInfo) ->
-    dbg_ui_winman:raise(Win),
-    ignore;
-handle_event({gs, _Id, click, {menuitem, Name}, _Arg}, _WinInfo) ->
-    Name;
-handle_event({gs, _Id, click, {menu, Menu}, _Arg}, _WinInfo) ->
-    Names = dbg_ui_win:selected(Menu),
-    {Menu, Names};
-handle_event({gs, _Id, click, {break, Point, What}, _Arg}, _WinInfo) ->
-    {break, Point, What};
-handle_event({gs, _Id, click, {module, Mod, view}, _Arg}, _WinInfo) ->
-    {module, Mod, view};
-
-%% Code area
-handle_event({gs, Editor, buttonpress, code_editor, _Arg}, WinInfo) ->
-    {Row, _Col} = gs:read(Editor, insertpos),
-    Again = receive
-		{gs, Editor, buttonpress, code_editor, _} ->
-		    gs:read(Editor, insertpos)
-	    after 500 ->
-		    false
-	    end,
-    case Again of
-	{Row, _} ->
-	    {Mod, _Editor} = WinInfo#winInfo.editor,
-	    Point = {Mod, Row},
-	    case lists:keymember(Point, #breakInfo.point,
-				 WinInfo#winInfo.breaks) of
-		false -> {break, Point, add};
-		true  -> {break, Point, delete}
-	    end;
-	{Row2, _} ->
-	    select_line(Editor, Row2, true),
-	    {win, WinInfo#winInfo{selected_line=Row2}};
-	false ->
-	    select_line(Editor, Row, true),
-	    {win, WinInfo#winInfo{selected_line=Row}}
-    end;
-
-%% Button area
-handle_event({gs, _Id, click, {button, Name}, _Arg}, _WinInfo) ->
-    Name;
-
-%% Evaluator area
-handle_event({gs, 'EvalEntry', keypress, _Data, ['Return'|_]}, _WI) ->
-    Command = case gs:read('EvalEntry', text) of
-		  [10] ->
-		      eval_output("\n", normal),
-		      ignore;
-		  Cmd ->
-		      eval_output([$>, Cmd, 10], normal),
-		      {user_command, Cmd}
-	      end,
-    gs:config('EvalEntry', [{text,""}, {focus,false}]),
-    Command;
-
-%% Bindings area
-handle_event({gs, _Id, click, {binding, {Var, Val}}, _Arg}, _WinInfo) ->
-    Str = io_lib:format("< ~p = ~p~n", [Var, Val]),
-    eval_output(Str, bold),
-    ignore;
-handle_event({gs, _Id, doubleclick, {binding, B}, _Arg}, _WinInfo) ->
-    {edit, B};
-
-handle_event(_GSEvent, _WinInfo) ->
-    ignore.
-
-
-%%====================================================================
-%% Internal functions
-%%====================================================================
-
-%%--Code Area---------------------------------------------------------
-
-code_area(X, Y, FrameOpts, Win) ->
-    gs:frame('CodeArea', Win,
-	     [{x,X}, {y,Y}, {width,546}, {height,400} | FrameOpts]),
-    gs:label(info_window, 'CodeArea',
-	     [{label,{text,""}}, {font,dbg_ui_win:font(normal)},
-	      {x,5}, {y,10}, {width,406}, {height,15},
-	      {anchor,nw}, {align,w}]),
-    code_editor('CodeEditor', 536, 365).
-
-code_editor() ->
-    W = gs:read('CodeEditor', width),
-    H = gs:read('CodeEditor', height),
-    code_editor(null, W, H).
-
-code_editor(Name, W, H) ->
-    Editor = if
-		 Name =:= null -> gs:editor('CodeArea', []);
-		 true -> gs:editor(Name, 'CodeArea', [])
-	     end,
-    gs:config(Editor, [{x,5}, {y,30}, {width,W}, {height,H},
-		       {keypress,false}, {buttonpress,true}, 
-		       {data,code_editor}]),
-    config_editor(Editor, [{vscroll,right}, {hscroll,bottom}]),
-    Font = dbg_ui_win:font(normal),
-    config_editor(Editor, [{wrap,none}, {fg,{{{1,0},'end'},black}},
-			   {font, Font},
-			   {font_style, {{{1,0},'end'},Font}}]),
-    Editor.
-
-resize_code_area(WinInfo, Key, Diff) ->
-    gs:config('CodeArea', {Key,gs:read('CodeArea', Key)+Diff}),
-    case Key of
-	width ->
-	    gs:config(info_window, {Key,gs:read(info_window,Key)+Diff});
-	height -> ignore
-    end,
-
-    %% Resize all code editors
-    Value = gs:read('CodeEditor', Key)+Diff,
-    gs:config('CodeEditor', {Key,Value}),
-    Editors = WinInfo#winInfo.editors,
-    lists:foreach(fun({_Mod, Editor}) ->
-			  gs:config(Editor, {Key,Value})
-		  end,
-		  Editors).
-
-%%--Button Area-------------------------------------------------------
-
-buttons() ->
-    [{'Step','StepButton'}, {'Next','NextButton'},
-     {'Continue','ContinueButton'}, {'Finish','FinishButton'},
-     {'Where','WhereButton'}, {'Up','UpButton'}, {'Down','DownButton'}].
-
-is_button(Name) ->
-    case lists:keyfind(Name, 1, buttons()) of
-	{Name, Button} -> {true, Button};
-	false -> false
-    end.
-
-button_area(Bu, X, Y, FrameOpts, Win) ->
-    {W,H} = case Bu of
-		open -> {546,30};
-		close -> {0,0}
-	    end,
-    gs:frame('ButtonArea', Win,
-	     [{x,X}, {y,Y}, {width,W}, {height,H} | FrameOpts]),
-    Font = dbg_ui_win:font(normal),
-    lists:foldl(fun({Name, Button}, Xb) ->
-			gs:button(Button, 'ButtonArea',
-				  [{label, {text,Name}}, {font,Font},
-				   {x, Xb}, {y, 1},
-				   {width, 77}, {height, 24},
-				   {data, {button,Name}}]),
-			Xb+78
-		end,
-		1,
-		buttons()).
-
-resize_button_area(close, width, _Diff) ->
-    ignore;
-resize_button_area(open, width, Diff) ->
-    gs:config('ButtonArea', {width, gs:read('ButtonArea', width)+Diff}).
-
-%%--Evaluator Area----------------------------------------------------
-
-eval_area({Ev,Bi}, X, Y, FrameOpts, Win) ->
-    {W,H} = if
-		Ev =:= open -> {289,200};
-		true -> {0,0}
-	    end,
-    Font = dbg_ui_win:font(normal),
-    gs:frame('EvalArea', Win,
-	     [{x,X}, {y,Y}, {width,W}, {height,H} | FrameOpts]),
-    gs:label('EvalArea',
-	     [{label,{text,"Evaluator:"}}, {font, Font},
-	      {x,5}, {y,35}, {width,80}, {height,25},
-	      {anchor,sw}, {align,center}]),
-    gs:entry('EvalEntry', 'EvalArea',
-	     [{font, Font},
-	      {x,80}, {y,35}, {width,185}, {height,25},
-	      {anchor,sw}, {keypress,true}]),
-    gs:editor('EvalEditor', 'EvalArea',
-	      [{x,5}, {y,35}, {width, 280}, {height, 160},
-	       {keypress,false},
-	       {vscroll,right}, {hscroll,bottom},
-	       {wrap,none}, {fg,{{{1,0},'end'},black}},
-	       {font, Font},
-	       {font_style,{{{1,0},'end'},Font}}]),
-    gs:config('EvalEditor', {enable, false}),
-    if
-	Ev =:= open, Bi =:= close -> resize_eval_area(Ev, width, 257);
-	true -> ignore
-    end.
-
-resize_eval_area(close, _Key, _Diff) ->
-    ignore;
-resize_eval_area(open, Key, Diff) ->
-    New = gs:read('EvalArea', Key)+Diff,
-    gs:config('EvalArea', {Key,New}),
-    case Key of
-	width ->
-	    gs:config('EvalEntry', {width,New-104}),
-	    gs:config('EvalEditor', {width,New-9});
-	height ->
-	    gs:config('EvalEditor', {height,New-40})
-    end.
-
-%%--Bindings Area-----------------------------------------------------
-
-bind_area({Ev,Bi}, X, Y, FrameOpts, Win) ->
-    {W,H} = if
-		Bi =:= open -> {249,200};
-		true -> {0,0}
-	    end,
-    gs:frame('BindArea', Win,
-	     [{x,X}, {y,Y}, {width,W}, {height,H} | FrameOpts]),
-
-    Font = dbg_ui_win:font(bold),
-    gs:grid('BindGrid', 'BindArea',
-	    [{x,2}, {y,2}, {height,193}, {width,241},
-	     {fg,black}, {vscroll,right}, {hscroll,bottom},
-	     {font,Font},
-	     calc_columnwidths(241), {rows, {1,50}}]), 
-    gs:gridline('BindGrid',
-		[{row,1}, {height,14}, {fg,blue},
-		 {text,{1,"Name"}}, {text,{2,"Value"}}, {font,Font}]),
-    gs:config('BindGrid', {rows,{1,1}}),
-    if
-	Bi =:= open, Ev =:= close -> resize_bind_area(Bi, width, 297);
-	true -> ignore
-    end.
-
-resize_bind_area(close, _Key, _Diff) ->
-    ignore;
-resize_bind_area(open, Key, Diff) ->
-    New = gs:read('BindArea', Key)+Diff,
-    gs:config('BindArea', {Key,New}),
-    case Key of
-	width ->
-	    gs:config('BindGrid', {width,New-8}),
-	    Cols = calc_columnwidths(New-8),
-	    gs:config('BindGrid', Cols);
-	height ->
-	    gs:config('BindGrid', {height,New-7})
-    end.
-
-calc_columnwidths(Width) ->    
-    if Width =< 291 -> 
-	    {columnwidths,[90,198]};
-       true -> 
-	    S = (Width)/(90+198),
-	    {columnwidths,[round(90*S),round(198*S)]}
-    end.
-
-%%--Trace Area--------------------------------------------------------
-
-trace_area(Tr, X, Y, FrameOpts, Win) ->
-    {W,H} = case Tr of
-		open -> {546,200};
-		close -> {0,0}
-	    end,
-    gs:frame('TraceArea', Win,
-	     [{x,X}, {y,Y}, {width,W}, {height,H} | FrameOpts]),
-    Editor = gs:editor('TraceEditor', 'TraceArea',
-		       [{x,5}, {y,5}, {width,536}, {height,190},
-			{keypress,false}]),
-    Font = dbg_ui_win:font(normal),
-    config_editor(Editor,
-		  [{vscroll,right}, {hscroll,bottom},
-		   {wrap,none},{fg,{{{1,0},'end'},black}},
-		   {font, Font},
-		   {font_style,{{{1,0},'end'},Font}}]).
-
-resize_trace_area(close, _Key, _Diff) ->
-    ignore;
-resize_trace_area(open, Key, Diff) ->
-    New = gs:read('TraceArea', Key)+Diff,
-    gs:config('TraceArea', {Key,New}),
-    gs:config('TraceEditor', {Key,New-10}).
-
-%%--Editors-----------------------------------------------------------
-
-config_editor(Editor, Opts) ->
-    gs:config(Editor, {enable,true}),
-    gs:config(Editor, Opts),
-    gs:config(Editor, {enable,false}).
-
-%%--Resize Bars-------------------------------------------------------
-%% The resize bars are used to resize the areas within the window.
-
-%%--------------------------------------------------------------------
-%% resizebar(Flag, Name, X, Y, W, H, Obj) -> resizebar()
-%%   Flag = open | close
-%%   Name = atom()
-%%   X = Y = integer()  Coordinates relative to Obj
-%%   W = H = integer()  Width and height
-%%   Obj = gsobj()
-%% Creates a 'resize bar', a frame object over which the cursor will
-%% be of the 'resize' type.
-%%--------------------------------------------------------------------
-resizebar(Flag, Name, X, Y, W, H, Obj) ->
-    {W2,H2} = case Flag of
-		  open  -> {W,H};
-		  close -> {0,0}
-	      end,
-    gs:create(frame, Name, Obj, [{x,X}, {y,Y}, {width,W2}, {height,H2},
-				 {bw,2},
-				 {cursor,resize},
-				 {buttonpress,true}, {buttonrelease,true},
-				 {data,resizebar}]).
-
-rb1({_Bu,Ev,Bi,Tr}) ->
-    if
-	Ev =:= close, Bi =:= close, Tr =:= close -> close;
-	true -> open
-    end.
-    
-rb2({_Bu,Ev,Bi,Tr}) ->
-    if
-	Tr =:= open ->
-	    if
-		Ev =:= close, Bi =:= close -> close;
-		true -> open
-	    end;
-	true -> close
-    end.
-    
-rb3({_Bu,Ev,Bi,_Tr}) ->
-    if
-	Ev =:= open, Bi =:= open -> open;
-	true -> close
-    end.
-
-%%--Configuration-----------------------------------------------------
-%% Resize the window as well as its contents
-
-%%--------------------------------------------------------------------
-%% config_v()
-%% Reconfigure the window vertically.
-%%--------------------------------------------------------------------
-config_v() ->
-    Y1 = 25+gs:read('CodeArea', height),
-    gs:config('RB1', {y,Y1}),
-    
-    Y2 = Y1+gs:read('RB1', height),
-    gs:config('ButtonArea', {y,Y2}),
-    
-    Y3 = Y2+gs:read('ButtonArea', height),
-    gs:config('EvalArea', {y,Y3}),
-    gs:config('RB3', {y,Y3}),
-    gs:config('BindArea', {y,Y3}),
-    
-    Y4 = Y3 + erlang:max(gs:read('EvalArea', height),
-		  gs:read('BindArea', height)),
-    gs:config('RB2', {y,Y4}),
-    
-    Y5 = Y4 + gs:read('RB2', height),
-    gs:config('TraceArea', {y,Y5}).
-
-%%--------------------------------------------------------------------
-%% config_h()
-%% Reconfigure the window horizontally.
-%%--------------------------------------------------------------------
-config_h() ->
-    X1 = 2+gs:read('EvalArea', width),
-    gs:config('RB3', {x,X1}),
-    
-    X2 = X1+gs:read('RB3', width),
-    gs:config('BindArea', {x,X2}).
-
-%%--------------------------------------------------------------------
-%% configure(WinInfo, W, H)
-%% The window has been resized, now its contents must be resized too.
-%%--------------------------------------------------------------------
-configure(WinInfo, NewW, NewH) ->
-    {Bu,Ev,Bi,Tr} = Flags = WinInfo#winInfo.flags,
-    
-    OldW = gs:read('CodeArea', width)+4,
-    OldH = 25+gs:read('CodeArea', height)+
-	gs:read('RB1', height)+
-	gs:read('ButtonArea', height)+
-	erlang:max(gs:read('EvalArea', height), gs:read('BindArea', height))+
-	gs:read('RB2', height)+
-	gs:read('TraceArea', height),
-
-    %% Adjust width unless it is unchanged or less than minimum width
-    if
-	OldW =/= NewW ->
-	    {Dcode,Deval,Dbind} = configure_widths(OldW,NewW,Flags),
-	    resize_code_area(WinInfo, width, Dcode),
-	    case rb1(Flags) of
-		open ->
-		    gs:config('RB1', {width,gs:read('RB1',width)+Dcode});
-		close -> ignore
-	    end,
-	    resize_button_area(Bu, width, Dcode),
-	    resize_eval_area(Ev, width, Deval),
-	    resize_bind_area(Bi, width, Dbind),
-	    case rb2(Flags) of
-		open ->
-		    gs:config('RB2', {width,gs:read('RB2',width)+Dcode});
-		close -> ignore
-	    end,
-	    resize_trace_area(Tr, width, Dcode),
-	    config_h();
-	true -> ignore
-    end,
-    
-    %% Adjust height unless it is unchanged or less than minimum height
-    if
-	OldH =/= NewH ->
-	    {Dcode2,Deval2,Dtrace} = configure_heights(OldH,NewH,Flags),
-	    resize_code_area(WinInfo, height, Dcode2),
-	    resize_eval_area(Ev, height, Deval2),
-	    case rb3(Flags) of
-		open ->
-		    gs:config('RB3',
-			      {height,gs:read('RB3',height)+Deval2});
-		close -> ignore
-	    end,
-	    resize_bind_area(Bi, height, Deval2),
-	    resize_trace_area(Tr, height, Dtrace),
-	    config_v();
-	true -> ignore
-    end.
-
-%% Compute how much the width of each frame must be increased or
-%% decreased in order to adjust to the new window width.
-configure_widths(OldW, NewW, Flags) ->
-    {_Bu,Ev,Bi,_Tr} = Flags,
-
-    %% Difference between old and new width, considering min window width
-    Diff = abs(erlang:max(OldW,330)-erlang:max(NewW,330)),
-    
-    %% Check how much the frames can be resized in reality
-    Limits = if
-		 %% Window larger
-		 NewW > OldW ->
-		     if
-			 Ev =:= open, Bi =:= open -> {0,Diff,Diff};
-			 Ev =:= open -> {0,Diff,0};
-			 Bi =:= open -> {0,0,Diff};
-			 true -> {Diff,0,0}
-		     end;
-		 
-		 %% Window smaller; get difference between min size
-		 %% and current size
-		 OldW>NewW ->
-		     if
-			 Ev =:= open, Bi =:= open ->
-			     {0,
-			      gs:read('EvalArea',width)-204,
-			      gs:read('BindArea',width)-112};
-			 Ev =:= open -> {0,Diff,0};
-			 Bi =:= open -> {0,0,Diff};
-			 true -> {Diff,0,0}
-		     end
-	     end,
-    
-    case Limits of
-
-	%% No Shell or Bind frame, larger window
-	{T,0,0} when NewW > OldW -> {T,0,0};
-	
-	%% No Shell or Bind frame, smaller window
-	{T,0,0} when OldW > NewW -> {-T,0,0};
-
-	%% Window larger; divide Diff among the frames and return result
-	{_,Sf,B} when NewW > OldW ->
-	    {_,Sf2,B2} = divide([{0,0},{0,Sf},{0,B}],Diff),
-	    {Sf2+B2,Sf2,B2};
-
-	%% Window smaller; divide Diff among the frames and return
-	%% the inverted result (the frames should shrink)
-	{_,Sf,B} when OldW>NewW ->
-	    {_,Sf2,B2} = divide([{0,0},{0,Sf},{0,B}],Diff),
-	    {-(Sf2+B2),-Sf2,-B2}
-    end.
-
-%% Compute how much the height of each frame must be increased or
-%% decreased in order to adjust to the new window height.
-configure_heights(OldH, NewH, Flags) ->
-    {_Bu,Ev,Bi,Tr} = Flags,
-
-    %% Difference between old and new height, considering min win height
-    MinH = min_height(Flags),
-    Diff = abs(erlang:max(OldH,MinH)-erlang:max(NewH,MinH)),
-    
-    %% Check how much the frames can be resized in reality
-    {T,Sf,Ff} = if
-		  %% Window larger
-		  NewH > OldH ->
-		      {Diff,
-		       if
-			   Ev =:= close, Bi =:= close -> 0;
-			   true -> Diff
-		       end,
-		       if
-			   Tr =:= open -> Diff;
-			   true -> 0
-		       end};
-
-		  %% Window smaller; get difference between min size
-		  %% and current size
-		  OldH > NewH ->
-		      {gs:read('CodeArea',height)-100,
-		       if
-			   Ev =:= close, Bi =:= close -> 0;
-			   true ->
-			       if
-				   Ev =:= open ->
-				       gs:read('EvalArea',height)-100;
-				   Bi =:= open ->
-				       gs:read('BindArea',height)-100
-			       end
-		       end,
-		       if
-			   Tr =:= open -> gs:read('TraceArea',height)-100;
-			   true -> 0
-		       end}
-	      end,
-    
-    if
-	%% Window larger; divide Diff among the frames and return result
-	NewH>OldH -> divide([{0,T},{0,Sf},{0,Ff}],Diff);
-
-	%% Window smaller; divide Diff among the frames and return
-	%% the inverted result (the frames should shrink)
-	OldH>NewH ->
-	    {T2,Sf2,Ff2} = divide([{0,T},{0,Sf},{0,Ff}],Diff),
-	    {-T2,-Sf2,-Ff2}
-    end.
-
-%% Compute minimum window height
-min_height(Flags) ->
-    {Bu,S,Bi,F} = Flags,
-    H1 = 25 + 100 + 2, % Upper pad + Trace frame + lower pad
-    H2 = H1 + bu(Bu) + s_bi(S,Bi) + f(F),
-    H3 = case rb1(Flags) of
-	     open -> H2+10;
-	     close -> H2
-	 end,
-    H4 = case rb2(Flags) of
-	     open -> H3+10;
-	     close -> H3
-	 end,
-    H4.
-
-bu(close) -> 0;
-bu(open)  -> 30.
-
-s_bi(close,close) -> 0;
-s_bi(_,_) -> 100.
-
-f(close) -> 0;
-f(open)  -> 100.
-
-%% Try to distribute Diff as evenly as possible between E1, E2 and E3.
-divide([{T,T},{S,S},{F,F}], _Diff) ->
-    {T,S,F};
-divide(L, Diff) ->
-    [{T,Tmax},{S,Smax},{F,Fmax}] = L,
-
-    %% Count how many elements in L can still be filled
-    Rem = remaining(L),
-    
-    %% Divide Diff by Rem
-    D = Diff div Rem,
-
-    if
-	%% All of Diff has been distributed
-	D =:= 0 -> {T,S,F};
-	true ->
-	    %% For each element, try to add as much as possible of D
-	    {NewT,Dt} = divide2(D,T,Tmax),
-	    {NewS,Ds} = divide2(D,S,Smax),
-	    {NewF,Df} = divide2(D,F,Fmax),
-    
-	    %% Recur with a list of elements with new current values
-	    %% and decreased Diff
-	    divide([{NewT,Tmax},{NewS,Smax},{NewF,Fmax}],
-		   (Diff rem Rem)+Dt+Ds+Df)
-    end.
-
-%% Count the number of 'non-filled' elements in L, ie where Curr<Max.
-remaining([]) -> 0;
-remaining([{Max,Max}|T]) -> remaining(T);
-remaining([_H|T]) -> 1 + remaining(T).
-
-divide2(_Diff, Max, Max) -> {Max,0};
-divide2(Diff, Curr, Max) ->
-    New = Curr+Diff,
-    if
-	New>Max -> {Max,New-Max};
-	true -> {New,0}
-    end.
-
-%%--Resizing using resize bars----------------------------------------
-%% Motions event will move the ResizeBar accordingly in Win, when
-%% the mouse button is released, the window is reconfigured.
-
-resize(WinInfo, ResizeBar) ->		
-    
-    %% Get window dimensions
-    W = gs:read(WinInfo#winInfo.window, width),
-    H = gs:read(WinInfo#winInfo.window, height),
-    
-    %% Call resize loop with min and max for the resize bars derived
-    %% from the window dimensions
-    resizeloop(WinInfo, ResizeBar, null,
-	       rblimits('RB1',W,H),
-	       rblimits('RB2',W,H),
-	       rblimits('RB3',W,H)).
-
-resizeloop(WI, RB, Prev, {Min1,Max1}, {Min2,Max2}, {Min3,Max3}) ->
-    receive
-	{gs,_,motion,_,[_,Y]} when RB =:= 'RB1', Y > Min1, Y < Max1 ->
-	    gs:config('RB1', {y,Y}),
-	    resizeloop(WI, RB, Y, {Min1,Max1}, {Min2,Max2}, {Min3,Max3});
-	{gs,_,motion,_,_} when RB =:= 'RB1' ->
-	    resizeloop(WI, RB, Prev, {Min1,Max1}, {Min2,Max2}, {Min3,Max3});
-	
-	{gs,_,motion,_,[_,Y]} when RB =:= 'RB2', Y > Min2, Y < Max2 ->
-	    gs:config('RB2', {y,Y}),
-	    resizeloop(WI, RB, Y, {Min1,Max1}, {Min2,Max2}, {Min3,Max3});
-	{gs,_,motion,_,_} when RB =:= 'RB2' ->
-	    resizeloop(WI, RB, Prev, {Min1,Max1}, {Min2,Max2}, {Min3,Max3});
-	 
-	{gs,_,motion,_,[X,_]} when RB =:= 'RB3', X > Min3, X < Max3 ->
-	    gs:config('RB3', {x,X}),
-	    resizeloop(WI, RB, X, {Min1,Max1}, {Min2,Max2}, {Min3,Max3});
-	{gs,_,motion,_,_} when RB =:= 'RB3' ->
-	    resizeloop(WI, RB, Prev, {Min1,Max1}, {Min2,Max2}, {Min3,Max3});
-	
-	{gs,_,buttonrelease,_,_} ->
-	    resize_win(WI, RB, Prev)
-    end.
-
-resize_win(_WinInfo, _RB, null) -> ignore;
-resize_win(WinInfo, 'RB1', Y) ->
-    {_Bu,S,Bi,F} = Flags = WinInfo#winInfo.flags,
-    H = gs:read('CodeArea', height),
-    Diff = H-(Y-25),
-
-    %% Resize Code, Evaluator and Binding areas
-    resize_code_area(WinInfo, height, -Diff),
-    if
-	S =:= close, Bi =:= close, F =:= open ->
-	    resize_trace_area(open, height, Diff);
-	true ->
-	    resize_eval_area(S, height, Diff),
-	    resize_bind_area(Bi, height, Diff)
-    end,
-
-    %% Resize vertical resize bar
-    case rb3(Flags) of
-	open -> gs:config('RB3', {height,gs:read('RB3',height)+Diff});
-	close -> ignore
-    end,
-    
-    %% Adjust the frames y coordinates
-    config_v();
-resize_win(WinInfo, 'RB2', Y) ->
-    {_Bu,S,Bi,F} = Flags = WinInfo#winInfo.flags,
-    Prev = gs:read('TraceArea',y),
-    Diff = Prev-(Y+10),
-    
-    %% Resize Trace, Evaluator and Binding areas
-    resize_trace_area(F, height, Diff),
-    resize_eval_area(S, height, -Diff),
-    resize_bind_area(Bi, height, -Diff),
-
-    %% Resize vertical resize bar
-    case rb3(Flags) of
-	open -> gs:config('RB3', {height,gs:read('RB3',height)-Diff});
-	close -> ignore
-    end,
-
-    %% Adjust the frames y coordinates
-    config_v();
-
-resize_win(WinInfo, 'RB3', X) ->
-    {_Bu,S,Bi,_F} = WinInfo#winInfo.flags,
-    Prev = gs:read('BindArea', x),
-    Diff = Prev-(X+10),
-    
-    %% Resize Binding and Trace areas
-    resize_bind_area(Bi, width, Diff),
-    resize_eval_area(S, width, -Diff),
-
-    %% Adjust the frames x coordinates
-    config_h().
-
-%% Given the window dimensions, return the limits for a  resize bar.
-rblimits('RB1',_W,H) ->
-    
-    %% Code frame should not have height <100
-    Min = 126,
-    
-    %% Max is decided by a minimum distance to 'RB2'
-    %% unless 'RB2' is invisible and 'CodeArea' is visible
-    %% (=> EvalFrame and BindFrame invisible) in which case
-    %% TraceFrame should not have height <100
-    RB2 = gs:read('RB2',height),
-    FF = gs:read('TraceArea',height),
-    Max = case RB2 of
-	      0 when FF =/= 0 ->
-		  H-112;
-	      _ ->
-		  Y = gs:read('RB2',y),
-		  erlang:max(Min,Y-140)
-	  end,
-    
-    {Min,Max};
-rblimits('RB2',_W,H) ->
-    %% TraceFrame should not have height < 100
-    Max = H-112,
-    %% Min is decided by a minimum distance to 'RB1'
-    Y = gs:read('RB1',y),
-    Min = erlang:min(Max,Y+140),
-    {Min,Max};
-
-rblimits('RB3',W,_H) ->
-    %% Neither CodeArea nor BindArea should occupy 
-    %% less than 1/3 of the total window width and EvalFrame should
-    %% be at least 289 pixels wide
-    {erlang:max(round(W/3),289),round(2*W/3)}.
-
-
-%%====================================================================
-%% 'Go To Line' and 'Search' help windows
-%%====================================================================
-
-helpwin(gotoline, WinInfo, GS, Coords) ->
-    spawn_link(?MODULE, helpwin, [gotoline, WinInfo, GS, Coords,self()]);
-helpwin(search, WinInfo, GS, Coords) ->
-    spawn_link(?MODULE, helpwin, [search, WinInfo, GS, Coords, self()]).
-
-helpwin(Type, WinInfo, GS, Coords, AttPid) ->
-    {_Mod, Editor} =  WinInfo#winInfo.editor,
-    Data = case Type of
-	       gotoline -> null;
-	       search ->
-		   {{1, 0}, false}
-	   end,
-    Win = helpwin(Type, GS, Coords),
-    helpwin_loop(Type, AttPid, Editor, Data, Win).
-
-helpwin_loop(Type, AttPid, Editor, Data, Win) ->
-    receive
-	{gs, _Id, destroy, _Data, _Arg} ->
-	    helpwin_stop(Type, AttPid, Editor, Data),
-	    true;
-
-	{gs, _Id, keypress, _Data, ['Return'|_]} ->
-	    gs:config(btn(Win), flash),
-	    Data2 = helpwin_action(Type, default,
-				   AttPid, Editor, Data, Win),
-	    helpwin_loop(Type, AttPid, Editor, Data2, Win);
-	{gs, _Id, keypress, _Data, _Arg} ->
-	    helpwin_loop(Type, AttPid, Editor, Data, Win);
-	
-	{gs, _Id, click, _Data, ["Clear"]} ->
-	    gs:config(ent(Win), {delete, {0,last}}),
-	    Data2 = helpwin_clear(Type, AttPid, Editor, Data, Win),
-	    helpwin_loop(Type, AttPid, Editor, Data2, Win);
-	{gs, _Id, click, _Data, ["Close"]} ->
-	    helpwin_stop(Type, AttPid, Editor, Data),
-	    true;
-	{gs, _Id, click, Action, _Arg} ->
-	    Data2 =
-		helpwin_action(Type, Action, AttPid, Editor, Data, Win),
-	    helpwin_loop(Type, AttPid, Editor, Data2, Win)
-    end.
-
-helpwin_stop(gotoline, _AttPid, _Editor, _Data) ->
-    ignore;
-helpwin_stop(search, _AttPid, Editor, {Pos, _CS}) ->
-    unmark_string(Editor, Pos).
-
-helpwin_clear(gotoline, _AttPid, _Editor, Data, _Win) ->
-    Data;
-helpwin_clear(search, _AttPid, Editor, {Pos, CS}, Win) ->
-    unmark_string(Editor, Pos),
-    gs:config(lbl(Win), {label, {text,""}}),
-    {{1, 0}, CS}.
-
-helpwin_action(gotoline, default, AttPid, _Editor, Data, Win) ->
-    case string:strip(gs:read(ent(Win), text)) of
-	"" -> ignore;
-	Str ->
-	    case catch list_to_integer(Str) of
-		{'EXIT', _Reason} -> ignore;
-		Line -> AttPid ! {gui, {gotoline, Line}}
-	    end
-    end,
-    Data;
-helpwin_action(search, case_sensitive, _AttPid, _Ed, {Pos, CS}, _Win) ->
-    Bool = if CS =:= true -> false; CS =:= false -> true end,
-    {Pos, Bool};
-helpwin_action(search, default, _AttPid, Editor, {Pos, CS}, Win) ->
-    gs:config(lbl(Win), {label, {text, ""}}),
-    unmark_string(Editor, Pos),
-    case gs:read(ent(Win), text) of
-	"" -> {Pos, CS};
-	Str ->
-	    gs:config(lbl(Win), {label, {text,"Searching..."}}),
-	    Str2 = lowercase(CS, Str),
-	    case search(Str2, Editor, gs:read(Editor, size), Pos, CS) of
-		{Row, Col} ->
-		    gs:config(lbl(Win), {label, {text,""}}),
-		    mark_string(Editor, {Row, Col}, Str),
-		    {{Row, Col}, CS};
-		not_found ->
-		    gs:config(lbl(Win), {label, {text,"Not found"}}),
-		    {Pos, CS}
-	    end
-    end.
-
-search(_Str, _Editor, Max, {Row, _Col}, _CS) when Row>Max ->
-    not_found;
-search(Str, Editor, Max, {Row, Col}, CS) ->
-    SearchIn = lowercase(CS, gs:read(Editor,
-				     {get,{{Row,Col+1},{Row,lineend}}})),
-    case string:str(SearchIn, Str) of
-	0 -> search(Str, Editor, Max, {Row+1, 0}, CS);
-	N -> {Row, Col+N}
-    end.
-
-lowercase(true, Str) -> Str;
-lowercase(false, Str) ->
-    [if Char >= $A, Char =< $Z -> Char+32;
-	true -> Char
-     end || Char <- Str].
-
-mark_string(Editor, {Row, Col}, Str) ->
-    Between = {{Row,Col}, {Row,Col+length(Str)}},
-    Font = dbg_ui_win:font(bold),
-    gs:config(Editor, [{vscrollpos, Row-5},
-		       {font_style, {Between, Font}},
-		       {fg, {Between, red}}]).
-
-unmark_string(Editor, {Row, Col}) ->
-    Between = {{Row,Col}, {Row,lineend}},
-    Font = dbg_ui_win:font(normal),
-    gs:config(Editor, [{vscrollpos, Row-5},
-		       {font_style, {Between, Font}},
-		       {fg, {Between, black}}]).
-
-helpwin(Type, GS, {X, Y}) ->
-    W = 200, Pad = 10, Wbtn = 50,
-
-    Title = case Type of search -> "Search"; gotoline -> "Go To Line" end,
-    Win = gs:window(GS, [{title, Title}, {x, X}, {y, Y}, {width, W},
-			 {destroy, true}]),
-    
-    Ent = gs:entry(Win, [{x, Pad}, {y, Pad}, {width, W-2*Pad},
-			 {keypress, true}]),
-    Hent = gs:read(Ent, height),
-
-    Font = dbg_ui_win:font(normal),
-
-    {Ybtn, Lbl} =
-	case Type of
-	    search ->
-		Ycb = Pad+Hent,
-		gs:checkbutton(Win, [{label, {text, "Case Sensitive"}},
-				     {font, Font},
-				     {align, w},
-				     {x, Pad}, {y, Ycb},
-				     {width, W-2*Pad}, {height, 15},
-				     {data, case_sensitive}]),
-		Ylbl = Ycb+15,
-		{Ylbl+Hent+Pad,
-		 gs:label(Win, [{x, Pad}, {y, Ylbl},
-				{width, W-2*Pad}, {height, Hent}])};
-	    gotoline -> {Pad+Hent+Pad, null}
-	end,
-
-    BtnLbl = case Type of search -> "Search"; gotoline -> "Go" end,
-    Btn = gs:button(Win, [{label, {text, BtnLbl}}, {font, Font},
-			  {x, W/2-3/2*Wbtn-Pad}, {y, Ybtn},
-			  {width, Wbtn}, {height, Hent},
-			  {data, default}]),
-    gs:button(Win, [{label, {text, "Clear"}}, {font, Font},
-		    {x, W/2-1/2*Wbtn}, {y, Ybtn},
-		    {width, Wbtn}, {height, Hent}]),
-    gs:button(Win, [{label, {text, "Close"}}, {font, Font},
-		    {x, W/2+1/2*Wbtn+Pad}, {y, Ybtn},
-		    {width, Wbtn}, {height, Hent}]),
-
-    H = Ybtn+Hent+Pad,
-    gs:config(Win, [{height, H}, {map, true}]),
-    {Ent, Lbl, Btn}.
-
-ent(Win) -> element(1, Win).
-lbl(Win) -> element(2, Win).
-btn(Win) -> element(3, Win).