Merge branch 'dgud/observer/gui/OTP-4779'

* dgud/observer/gui/OTP-4779:
  [observer] Implemented basic tracing functionality
  [observer] Work around wxWidgets windows bug
  [observer] Rework tracing part of the gui
  [observer] Fix portability bugs
  [observer] Improve process_info window
  [observer] Misc cleanup and fixes
  [observer] Clean up code
  [observer] Add a [d]ets viewer, tv replacement
  [observer] Started on a wx gui

1 files changed, 572 insertions, 0 deletions

diff --git a/lib/observer/src/observer_traceoptions_wx.erl b/lib/observer/src/observer_traceoptions_wx.erl
new file mode 100644
index 0000000000..bad05ec016
--- /dev/null
+++ b/lib/observer/src/observer_traceoptions_wx.erl
@@ -0,0 +1,572 @@
+%%
+%% %CopyrightBegin%
+%%
+%% Copyright Ericsson AB 2011. 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(observer_traceoptions_wx).
+
+-include_lib("wx/include/wx.hrl").
+-include("observer_defs.hrl").
+
+-export([process_trace/2, trace_pattern/4]).
+
+-compile(export_all).
+
+process_trace(Parent, Default) ->
+    Dialog = wxDialog:new(Parent, ?wxID_ANY, "Process Options",
+			  [{style, ?wxDEFAULT_DIALOG_STYLE bor ?wxRESIZE_BORDER}]),
+    Panel = wxPanel:new(Dialog),
+    MainSz = wxBoxSizer:new(?wxVERTICAL),
+    PanelSz = wxBoxSizer:new(?wxHORIZONTAL),
+    LeftSz = wxStaticBoxSizer:new(?wxVERTICAL, Panel,  [{label, "Tracing options"}]),
+    RightSz = wxStaticBoxSizer:new(?wxVERTICAL, Panel, [{label, "Inheritance options:"}]),
+
+    FuncBox = wxCheckBox:new(Panel, ?wxID_ANY, "Trace function call", []),
+    check_box(FuncBox, lists:member(functions, Default)),
+    SendBox = wxCheckBox:new(Panel, ?wxID_ANY, "Trace send message", []),
+    check_box(SendBox, lists:member(send, Default)),
+    RecBox = wxCheckBox:new(Panel, ?wxID_ANY, "Trace receive message", []),
+    check_box(RecBox, lists:member('receive', Default)),
+    EventBox = wxCheckBox:new(Panel, ?wxID_ANY, "Trace process events", []),
+    check_box(EventBox, lists:member(events, Default)),
+
+    {SpawnBox, SpwnAllRadio, SpwnFirstRadio} =
+	optionpage_top_right(Panel, RightSz, [{flag, ?wxBOTTOM},{border, 5}], "spawn"),
+    {LinkBox, LinkAllRadio, LinkFirstRadio} =
+	optionpage_top_right(Panel, RightSz, [{flag, ?wxBOTTOM},{border, 5}], "link"),
+    SpawnBool = lists:member(on_spawn, Default) orelse lists:member(on_first_spawn, Default),
+    LinkBool = lists:member(on_link, Default) orelse lists:member(on_first_link, Default),
+    check_box(SpawnBox, SpawnBool),
+    check_box(LinkBox,  LinkBool),
+    enable(SpawnBox, [SpwnAllRadio, SpwnFirstRadio]),
+    enable(LinkBox, [LinkAllRadio, LinkFirstRadio]),
+    wxRadioButton:setValue(SpwnAllRadio, lists:member(on_spawn, Default)),
+    wxRadioButton:setValue(SpwnFirstRadio, lists:member(on_first_spawn, Default)),
+    wxRadioButton:setValue(LinkAllRadio, lists:member(on_link, Default)),
+    wxRadioButton:setValue(LinkFirstRadio, lists:member(on_first_link, Default)),
+
+    wxSizer:add(LeftSz, FuncBox, []),
+    wxSizer:add(LeftSz, SendBox, []),
+    wxSizer:add(LeftSz, RecBox, []),
+    wxSizer:add(LeftSz, EventBox, []),
+    wxSizer:add(LeftSz, 150, -1),
+
+    wxSizer:add(PanelSz, LeftSz, [{flag, ?wxEXPAND}]),
+    wxSizer:add(PanelSz, RightSz,[{flag, ?wxEXPAND}]),
+    wxPanel:setSizer(Panel, PanelSz),
+    wxSizer:add(MainSz, Panel, [{flag, ?wxEXPAND}, {proportion,1}]),
+    Buttons = wxDialog:createButtonSizer(Dialog, ?wxOK bor ?wxCANCEL),
+    wxSizer:add(MainSz, Buttons, [{flag, ?wxEXPAND bor ?wxALL}, {border, 5}]),
+    wxWindow:setSizerAndFit(Dialog, MainSz),
+    wxSizer:setSizeHints(MainSz, Dialog),
+    wxCheckBox:connect(SpawnBox, command_checkbox_clicked,
+		       [{callback, fun(#wx{event=#wxCommand{}},_) ->
+					   enable(SpawnBox, [SpwnAllRadio, SpwnFirstRadio])
+				   end}]),
+    wxCheckBox:connect(LinkBox, command_checkbox_clicked,
+		       [{callback, fun(#wx{event=#wxCommand{}},_) ->
+					   enable(LinkBox, [LinkAllRadio, LinkFirstRadio])
+				   end}]),
+
+    Res = case wxDialog:showModal(Dialog) of
+	      ?wxID_OK ->
+		  All = [{SendBox, send}, {RecBox, 'receive'},
+			 {FuncBox, functions}, {EventBox, events},
+			 {{SpawnBox, SpwnAllRadio}, on_spawn},
+			 {{SpawnBox,SpwnFirstRadio}, on_first_spawn},
+			 {{LinkBox, LinkAllRadio}, on_link},
+			 {{LinkBox, LinkFirstRadio}, on_first_link}],
+		  Check = fun({Box, Radio}) ->
+				  wxCheckBox:getValue(Box) andalso wxRadioButton:getValue(Radio);
+			     (Box) ->
+				  wxCheckBox:getValue(Box)
+			  end,
+		  Opts = [Id || {Tick, Id} <- All, Check(Tick)],
+		  {ok, lists:reverse(Opts)};
+	      ?wxID_CANCEL ->
+		  cancel
+	  end,
+    wxDialog:destroy(Dialog),
+    Res.
+
+trace_pattern(ParentPid, Parent, Node, MatchSpecs) ->
+    try
+	Module = module_selector(Parent, Node),
+	MFAs  = function_selector(Parent, Node, Module),
+	MatchSpec = select_matchspec(ParentPid, Parent, MatchSpecs),
+	{Module, [#tpattern{m=M,fa={F,A},ms=MatchSpec} || {M,F,A} <- MFAs]}
+    catch cancel -> cancel
+    end.
+
+module_selector(Parent, Node) ->
+    Dialog = wxDialog:new(Parent, ?wxID_ANY, "Select Module",
+			  [{style, ?wxDEFAULT_DIALOG_STYLE bor ?wxRESIZE_BORDER},
+			   {size, {400, 400}}]),
+    Panel = wxPanel:new(Dialog),
+    PanelSz = wxBoxSizer:new(?wxVERTICAL),
+    MainSz  = wxBoxSizer:new(?wxVERTICAL),
+
+    TxtCtrl = wxTextCtrl:new(Panel, ?wxID_ANY),
+    ListBox = wxListBox:new(Panel, ?wxID_ANY, [{style, ?wxLB_SINGLE}]),
+    wxSizer:add(PanelSz, TxtCtrl, [{flag, ?wxEXPAND}]),
+    wxSizer:add(PanelSz, ListBox, [{flag, ?wxEXPAND}, {proportion, 1}]),
+    wxPanel:setSizer(Panel, PanelSz),
+    wxSizer:add(MainSz, Panel, [{flag, ?wxEXPAND bor ?wxALL},
+				{border, 5}, {proportion, 1}]),
+    Buttons = wxDialog:createButtonSizer(Dialog, ?wxOK bor ?wxCANCEL),
+    wxSizer:add(MainSz, Buttons, [{flag, ?wxEXPAND bor ?wxALL},
+				  {border, 5}, {proportion, 0}]),
+    wxWindow:setSizer(Dialog, MainSz),
+    OkId = wxDialog:getAffirmativeId(Dialog),
+    OkButt = wxWindow:findWindowById(OkId),
+    wxWindow:disable(OkButt),
+    wxWindow:setFocus(TxtCtrl),
+    %% init data
+    Modules = get_modules(Node),
+    AllModules = [{atom_to_list(X), X} || X <- Modules],
+    filter_listbox_data("", AllModules, ListBox),
+    wxTextCtrl:connect(TxtCtrl, command_text_updated,
+		       [{callback, fun(#wx{event=#wxCommand{cmdString=Input}}, _) ->
+					   filter_listbox_data(Input, AllModules, ListBox)
+				   end}]),
+    wxListBox:connect(ListBox, command_listbox_doubleclicked,
+		      [{callback, fun(_, _) -> wxDialog:endModal(Dialog, ?wxID_OK) end}]),
+    wxListBox:connect(ListBox, command_listbox_selected,
+		      [{callback, fun(#wx{event=#wxCommand{commandInt=Id}}, _) ->
+					  Id >= 0 andalso wxWindow:enable(OkButt)
+				  end}]),
+
+    case wxDialog:showModal(Dialog) of
+	?wxID_OK ->
+	    SelId  = wxListBox:getSelection(ListBox),
+	    case SelId >= 0 of
+		true ->
+		    Module = wxListBox:getClientData(ListBox, SelId),
+		    wxDialog:destroy(Dialog),
+		    Module;
+		false ->
+		    wxDialog:destroy(Dialog),
+		    throw(cancel)
+	    end;
+	?wxID_CANCEL ->
+	    wxDialog:destroy(Dialog),
+	    throw(cancel)
+    end.
+
+function_selector(Parent, Node, Module) ->
+    Dialog = wxDialog:new(Parent, ?wxID_ANY, "Trace Functions",
+			  [{style, ?wxDEFAULT_DIALOG_STYLE bor ?wxRESIZE_BORDER},
+			   {size, {400, 400}}]),
+
+    Panel = wxPanel:new(Dialog),
+    PanelSz = wxBoxSizer:new(?wxVERTICAL),
+    MainSz  = wxBoxSizer:new(?wxVERTICAL),
+
+    TxtCtrl = wxTextCtrl:new(Panel, ?wxID_ANY),
+    ListBox = wxCheckListBox:new(Panel, ?wxID_ANY, [{style, ?wxLB_EXTENDED}]),
+    wxSizer:add(PanelSz, TxtCtrl, [{flag, ?wxEXPAND}]),
+    wxSizer:add(PanelSz, ListBox, [{flag, ?wxEXPAND}, {proportion, 1}]),
+    SelAllBtn   = wxButton:new(Panel, ?wxID_ANY,   [{label, "Check Visible"}]),
+    DeSelAllBtn = wxButton:new(Panel, ?wxID_ANY, [{label, "Uncheck Visible"}]),
+    ButtonSz = wxBoxSizer:new(?wxHORIZONTAL),
+    [wxSizer:add(ButtonSz, Button, []) || Button <- [SelAllBtn, DeSelAllBtn]],
+    wxSizer:add(PanelSz, ButtonSz, [{flag, ?wxEXPAND bor ?wxALL},
+				    {border, 5}, {proportion, 0}]),
+    wxPanel:setSizer(Panel, PanelSz),
+    wxSizer:add(MainSz, Panel, [{flag, ?wxEXPAND bor ?wxALL},
+				{border, 5}, {proportion, 1}]),
+
+    Buttons = wxDialog:createButtonSizer(Dialog, ?wxOK bor ?wxCANCEL),
+    wxSizer:add(MainSz, Buttons, [{flag, ?wxEXPAND bor ?wxALL},
+				  {border, 5}, {proportion, 0}]),
+    wxWindow:setSizer(Dialog, MainSz),
+    wxWindow:setFocus(TxtCtrl),
+    %% Init
+    Functions = observer_wx:try_rpc(Node, Module, module_info, [functions]),
+    Choices = lists:sort([{Name, Arity} || {Name, Arity} <- Functions,
+					   not(erl_internal:guard_bif(Name, Arity))]),
+    ParsedChoices = parse_function_names(Choices),
+    filter_listbox_data("", ParsedChoices, ListBox, false),
+    %% Setup Event handling
+    wxTextCtrl:connect(TxtCtrl, command_text_updated,
+		       [{callback,
+			 fun(#wx{event=#wxCommand{cmdString=Input}}, _) ->
+				 filter_listbox_data(Input, ParsedChoices, ListBox, false)
+			 end}]),
+    Self = self(),
+
+    %% Sigh clientdata in checklistbox crashes on windows, wx-bug I presume.
+    %% Don't have time to investigate now, workaround file bug report later
+    GetClientData = fun(LB, N) ->
+			    String = wxListBox:getString(LB, N),
+			    {_, Data} = lists:keyfind(String, 1, ParsedChoices),
+			    Data
+		    end,
+    wxCheckListBox:connect(ListBox, command_checklistbox_toggled,
+			   [{callback,
+			     fun(#wx{event=#wxCommand{commandInt=N}}, _) ->
+				     Self ! {ListBox, wxCheckListBox:isChecked(ListBox, N),
+					     GetClientData(ListBox, N)}
+			     end}]),
+    Check = fun(Id, Bool) ->
+    		    wxCheckListBox:check(ListBox, Id, [{check, Bool}]),
+    		    Self ! {ListBox, Bool, GetClientData(ListBox, Id)}
+    	    end,
+    wxButton:connect(SelAllBtn, command_button_clicked,
+    		     [{callback, fun(#wx{}, _) ->
+    					 Count = wxListBox:getCount(ListBox),
+    					 [Check(SelId, true) ||
+    					     SelId <- lists:seq(0, Count-1),
+    					     not wxCheckListBox:isChecked(ListBox, SelId)]
+    				 end}]),
+    wxButton:connect(DeSelAllBtn, command_button_clicked,
+    		     [{callback, fun(#wx{}, _) ->
+    					 Count = wxListBox:getCount(ListBox),
+    					 [Check(SelId, false) ||
+    					     SelId <- lists:seq(0, Count-1),
+    					     wxCheckListBox:isChecked(ListBox, SelId)]
+    				 end}]),
+    case wxDialog:showModal(Dialog) of
+	?wxID_OK ->
+	    wxDialog:destroy(Dialog),
+	    case get_checked_funcs(ListBox, []) of
+		[] -> [{Module, '_', '_'}];
+		FAs ->
+		    [{Module, F, A} || {F,A} <- FAs]
+	    end;
+	?wxID_CANCEL ->
+	    wxDialog:destroy(Dialog),
+	    throw(cancel)
+    end.
+
+get_checked_funcs(ListBox, Acc) ->
+    receive
+	{ListBox, true, FA} ->
+	    get_checked_funcs(ListBox, [FA|lists:delete(FA,Acc)]);
+	{ListBox, false, FA} ->
+	    get_checked_funcs(ListBox, lists:delete(FA,Acc))
+    after 0 ->
+	    lists:reverse(Acc)
+    end.
+
+select_matchspec(Pid, Parent, MatchSpecs) ->
+    Dialog = wxDialog:new(Parent, ?wxID_ANY, "Trace Match Specifications",
+			  [{style, ?wxDEFAULT_DIALOG_STYLE bor ?wxRESIZE_BORDER},
+			   {size, {400, 400}}]),
+
+    Panel = wxPanel:new(Dialog),
+    PanelSz = wxBoxSizer:new(?wxVERTICAL),
+    MainSz = wxBoxSizer:new(?wxVERTICAL),
+    TxtSz = wxStaticBoxSizer:new(?wxVERTICAL, Panel, [{label, "Match specification:"}]),
+    BtnSz = wxBoxSizer:new(?wxHORIZONTAL),
+    SavedSz = wxStaticBoxSizer:new(?wxVERTICAL, Panel, [{label, "Saved match specifications:"}]),
+
+    TextCtrl = create_styled_txtctrl(Panel),
+    wxSizer:add(TxtSz, TextCtrl, [{flag, ?wxEXPAND}, {proportion, 1}]),
+
+    AddMsBtn  = wxButton:new(Panel, ?wxID_ANY, [{label, "New"}]),
+    EditMsBtn  = wxButton:new(Panel, ?wxID_ANY, [{label, "Edit"}]),
+    DelMsBtn  = wxButton:new(Panel, ?wxID_ANY, [{label, "Delete"}]),
+    wxSizer:add(BtnSz, AddMsBtn),
+    wxSizer:add(BtnSz, EditMsBtn),
+    wxSizer:add(BtnSz, DelMsBtn),
+
+    ListBox = wxListBox:new(Panel, ?wxID_ANY, []),
+    wxSizer:add(SavedSz, ListBox, [{flag, ?wxEXPAND}, {proportion, 1}]),
+    wxSizer:add(PanelSz, TxtSz, [{flag, ?wxEXPAND}, {proportion, 1}]),
+    wxSizer:add(PanelSz, BtnSz),
+    wxSizer:add(PanelSz, SavedSz, [{flag, ?wxEXPAND}, {proportion, 1}]),
+
+    wxWindow:setSizer(Panel, PanelSz),
+    wxSizer:add(MainSz, Panel, [{flag, ?wxEXPAND bor ?wxALL},
+				{border, 5}, {proportion, 1}]),
+    Buttons = wxDialog:createButtonSizer(Dialog, ?wxOK bor ?wxCANCEL),
+    wxSizer:add(MainSz, Buttons, [{flag, ?wxEXPAND bor ?wxALL},
+				  {border, 5}, {proportion, 0}]),
+    wxWindow:setSizer(Dialog, MainSz),
+    OkId = wxDialog:getAffirmativeId(Dialog),
+    OkButt = wxWindow:findWindowById(OkId),
+    wxWindow:disable(OkButt),
+    wxWindow:disable(EditMsBtn),
+    wxWindow:disable(DelMsBtn),
+
+    Choices = ms_names(MatchSpecs),
+    filter_listbox_data("", Choices, ListBox),
+
+    Add = fun(_,_) ->
+		  case edit_ms(TextCtrl, new, Parent) of
+		      Ms = #match_spec{} -> add_and_select(-1, Ms, ListBox);
+		      Else -> Else
+		  end
+	  end,
+    Edit = fun(_,_) ->
+		   SelId = wxListBox:getSelection(ListBox),
+		   case SelId >= 0 of
+		       true ->
+			   #match_spec{name=Name} = wxListBox:getClientData(ListBox,SelId),
+			   case edit_ms(TextCtrl, Name, Parent) of
+			       Ms = #match_spec{} -> add_and_select(SelId, Ms, ListBox);
+			       Else -> Else
+			   end;
+		       false ->
+			   ok
+		   end
+	   end,
+    Del = fun(_,_) ->
+		  SelId = wxListBox:getSelection(ListBox),
+		  case SelId >= 0 of
+		      true ->
+			  wxListBox:delete(ListBox, SelId);
+		      false ->
+			  ok
+		  end
+	  end,
+    Sel = fun(#wx{event=#wxCommand{commandInt=Id}}, _) ->
+		  case Id >= 0 of
+		      true ->
+			  wxWindow:enable(OkButt),
+			  wxWindow:enable(EditMsBtn),
+			  wxWindow:enable(DelMsBtn),
+			  #match_spec{func=Str} = wxListBox:getClientData(ListBox,Id),
+			  wxStyledTextCtrl:setText(TextCtrl, Str);
+		      false ->
+			  try
+			      wxWindow:disable(OkButt),
+			      wxWindow:disable(EditMsBtn),
+			      wxWindow:disable(DelMsBtn)
+			  catch _:_ -> ok
+			  end
+		  end
+	  end,
+    wxButton:connect(AddMsBtn,  command_button_clicked,  [{callback,Add}]),
+    wxButton:connect(EditMsBtn,  command_button_clicked, [{callback,Edit}]),
+    wxButton:connect(DelMsBtn,  command_button_clicked,  [{callback,Del}]),
+    wxListBox:connect(ListBox, command_listbox_selected, [{callback, Sel}]),
+    case wxDialog:showModal(Dialog) of
+	?wxID_OK ->
+	    SelId  = wxListBox:getSelection(ListBox),
+	    Count = wxListBox:getCount(ListBox),
+	    MSs = [wxListBox:getClientData(ListBox, Id) ||
+		      Id <- lists:seq(0, Count-1)],
+	    Pid ! {update_ms, MSs},
+	    MS = lists:nth(SelId+1, MSs),
+	    wxDialog:destroy(Dialog),
+	    MS;
+	?wxID_CANCEL ->
+	    wxDialog:destroy(Dialog),
+	    throw(cancel)
+    end.
+
+edit_ms(TextCtrl, Label0, Parent) ->
+    Str = ensure_last_is_dot(wxStyledTextCtrl:getText(TextCtrl)),
+    try
+	MatchSpec = ms_from_string(Str),
+	Label = case Label0 == new of
+		    true -> get_label(Parent);
+		    _ -> Label0
+		end,
+	#match_spec{name=Label, term=MatchSpec,
+		    str=io_lib:format("~w",[MatchSpec]),
+		    func=Str}
+    catch
+	throw:cancel ->
+	    ok;
+	throw:Error ->
+	    observer_wx:create_txt_dialog(Parent, Error, "Error", ?wxICON_ERROR),
+	    ok
+    end.
+
+get_label(Frame) ->
+    Dialog = wxTextEntryDialog:new(Frame, "Enter alias: "),
+    case wxDialog:showModal(Dialog) of
+	?wxID_OK ->
+	    wxTextEntryDialog:getValue(Dialog);
+	?wxID_CANCEL ->
+	    throw(cancel)
+    end.
+
+ms_from_string(Str) ->
+    try
+	Tokens = case erl_scan:string(Str) of
+		     {ok, Ts, _} -> Ts;
+		     {error, {SLine, SMod, SError}, _} ->
+			 throw(io_lib:format("~w: ~s", [SLine,SMod:format_error(SError)]))
+		 end,
+	Exprs  = case erl_parse:parse_exprs(Tokens) of
+		     {ok, T} -> T;
+		     {error, {PLine, PMod, PError}} ->
+			 throw(io_lib:format("~w: ~s", [PLine,PMod:format_error(PError)]))
+		 end,
+	Term = case Exprs of
+		   [{'fun', _, {clauses, Clauses}}|_] ->
+		       case ms_transform:transform_from_shell(dbg,Clauses,orddict:new()) of
+			   {error, [{_,[{MSLine,Mod,MSInfo}]}],_} ->
+			       throw(io_lib:format("~w: ~p", [MSLine,Mod:format_error(MSInfo)]));
+			   {error, _} ->
+			       throw("Could not convert fun() to match spec");
+			   Ms ->
+			       Ms
+		       end;
+		   [Expr|_] ->
+		       erl_parse:normalise(Expr)
+	       end,
+	case erlang:match_spec_test([], Term, trace) of
+	    {ok, _, _, _} -> Term;
+	    {error, List} -> throw([[Error, $\n] || {_, Error} <- List])
+	end
+    catch error:_Reason ->
+	    %% io:format("Bad term: ~s~n ~p in ~p~n", [Str, _Reason, erlang:get_stacktrace()]),
+	    throw("Invalid term")
+    end.
+
+add_and_select(Id, MS0, ListBox) ->
+    [{Str,User}] = ms_names([MS0]),
+    Sel = case Id >= 0 of
+	     true ->
+		  wxListBox:setString(ListBox, Id, Str),
+		  wxListBox:setClientData(ListBox, Id, User),
+		  Id;
+	      false ->
+		  wxListBox:append(ListBox, Str, User)
+	  end,
+    wxListBox:setSelection(ListBox, Sel).
+
+filter_listbox_data(Input, Data, ListBox) ->
+    filter_listbox_data(Input, Data, ListBox, true).
+
+filter_listbox_data(Input, Data, ListBox, AddClientData) ->
+    FilteredData = [X || X = {Str, _} <- Data, re:run(Str, Input) =/= nomatch],
+    wxListBox:clear(ListBox),
+    wxListBox:appendStrings(ListBox, [Str || {Str,_} <- FilteredData]),
+    AddClientData andalso
+	wx:foldl(fun({_, Term}, N) ->
+			 wxListBox:setClientData(ListBox, N, Term),
+			 N+1
+		 end, 0, FilteredData),
+    FilteredData.
+
+get_modules(Node) ->
+    lists:sort([Module || {Module, _} <- observer_wx:try_rpc(Node, code, all_loaded, [])]).
+
+optionpage_top_right(Panel, TopRightSz, Options, Text) ->
+    Sizer = wxBoxSizer:new(?wxVERTICAL),
+    ChkBox = wxCheckBox:new(Panel, ?wxID_ANY, "Inherit on " ++ Text, []),
+    RadioSz = wxBoxSizer:new(?wxVERTICAL),
+    Radio1 = wxRadioButton:new(Panel, ?wxID_ANY, "All " ++ Text, [{style, ?wxRB_GROUP}]),
+    Radio2 = wxRadioButton:new(Panel, ?wxID_ANY, "First " ++ Text ++ " only", []),
+    wxSizer:add(Sizer, ChkBox, []),
+    wxSizer:add(RadioSz, Radio1, []),
+    wxSizer:add(RadioSz, Radio2, []),
+    wxSizer:add(Sizer, RadioSz, [{flag, ?wxLEFT},{border, 20}]),
+    wxSizer:add(TopRightSz, Sizer, Options),
+    {ChkBox, Radio1, Radio2}.
+
+
+create_styled_txtctrl(Parent) ->
+    FixedFont = observer_wx:get_attrib({font, fixed}),
+    Ed = wxStyledTextCtrl:new(Parent),
+    wxStyledTextCtrl:styleClearAll(Ed),
+    wxStyledTextCtrl:styleSetFont(Ed, ?wxSTC_STYLE_DEFAULT, FixedFont),
+    wxStyledTextCtrl:setLexer(Ed, ?wxSTC_LEX_ERLANG),
+    wxStyledTextCtrl:setMarginType(Ed, 1, ?wxSTC_MARGIN_NUMBER),
+    wxStyledTextCtrl:setSelectionMode(Ed, ?wxSTC_SEL_LINES),
+    wxStyledTextCtrl:setUseHorizontalScrollBar(Ed, false),
+
+    Styles =  [{?wxSTC_ERLANG_DEFAULT,  {0,0,0}},
+	       {?wxSTC_ERLANG_COMMENT,  {160,53,35}},
+	       {?wxSTC_ERLANG_VARIABLE, {150,100,40}},
+	       {?wxSTC_ERLANG_NUMBER,   {5,5,100}},
+	       {?wxSTC_ERLANG_KEYWORD,  {130,40,172}},
+	       {?wxSTC_ERLANG_STRING,   {170,45,132}},
+	       {?wxSTC_ERLANG_OPERATOR, {30,0,0}},
+	       {?wxSTC_ERLANG_ATOM,     {0,0,0}},
+	       {?wxSTC_ERLANG_FUNCTION_NAME, {64,102,244}},
+	       {?wxSTC_ERLANG_CHARACTER,{236,155,172}},
+	       {?wxSTC_ERLANG_MACRO,    {40,144,170}},
+	       {?wxSTC_ERLANG_RECORD,   {40,100,20}},
+	       {?wxSTC_ERLANG_SEPARATOR,{0,0,0}},
+	       {?wxSTC_ERLANG_NODE_NAME,{0,0,0}}],
+    SetStyle = fun({Style, Color}) ->
+		       wxStyledTextCtrl:styleSetFont(Ed, Style, FixedFont),
+		       wxStyledTextCtrl:styleSetForeground(Ed, Style, Color)
+	       end,
+    [SetStyle(Style) || Style <- Styles],
+    wxStyledTextCtrl:setKeyWords(Ed, 0, keyWords()),
+    Ed.
+
+
+keyWords() ->
+    L = ["after","begin","case","try","cond","catch","andalso","orelse",
+	 "end","fun","if","let","of","query","receive","when","bnot","not",
+	 "div","rem","band","and","bor","bxor","bsl","bsr","or","xor"],
+    lists:flatten([K ++ " " || K <- L] ++ [0]).
+
+
+enable(CheckBox, Radio) ->
+    case wxCheckBox:isChecked(CheckBox) of
+	false ->
+	    [wxWindow:disable(R) || R <- Radio];
+	true ->
+	    [wxWindow:enable(R) || R <- Radio]
+    end.
+
+
+check_box(ChkBox, Bool) ->
+    case Bool of
+	true ->
+	    wxCheckBox:set3StateValue(ChkBox, ?wxCHK_CHECKED);
+	false ->
+	    ignore
+    end.
+
+parse_function_names(Choices) ->
+    StrList = [{atom_to_list(Name) ++ "/" ++ integer_to_list(Arity), Term}
+	       || Term = {Name, Arity} <- Choices],
+    parse_function_names(StrList, []).
+
+parse_function_names([], Acc) ->
+    lists:reverse(Acc);
+parse_function_names([{H, Term}|T], Acc) ->
+    IsFun = re:run(H, ".*-fun-\\d*?-"),
+    IsLc = re:run(H, ".*-lc\\$\\^\\d*?/\\d*?-\\d*?-"),
+    IsLbc = re:run(H, ".*-lbc\\$\\^\\d*?/\\d*?-\\d*?-"),
+    Parsed =
+	if IsFun =/= nomatch -> "Fun: " ++ H;
+	   IsLc =/= nomatch -> "List comprehension: " ++ H;
+	   IsLbc =/= nomatch -> "Bit comprehension: " ++ H;
+	   true ->
+		H
+	end,
+    parse_function_names(T, [{Parsed, Term} | Acc]).
+
+ms_names(MatchSpecList) ->
+    MsOrAlias = fun(#match_spec{name = A, str = M}) ->
+			case A of
+			    "" -> M;
+			    _ -> A ++ "    " ++ M
+			end
+		end,
+    [{MsOrAlias(X), X} || X <- MatchSpecList].
+
+ensure_last_is_dot([]) ->
+    ".";
+ensure_last_is_dot(String) ->
+    case lists:last(String) =:= $. of
+	true ->
+	    String;
+	false ->
+	    String ++ "."
+    end.