[observer] Clean up code

system tab, timer handling and "etop" code

More info in system tab, same timer handling in all tabs.

Remove dependency off etop process, do the roughly the same
functionality on our own.

1 files changed, 199 insertions, 0 deletions

diff --git a/lib/observer/src/observer_lib.erl b/lib/observer/src/observer_lib.erl
new file mode 100644
index 0000000000..cab9d5ccf2
--- /dev/null
+++ b/lib/observer/src/observer_lib.erl
@@ -0,0 +1,199 @@
+%%
+%% %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_lib).
+
+-export([get_wx_parent/1,
+	 display_info_dialog/1,
+	 interval_dialog/4, start_timer/1, stop_timer/1,
+	 display_info/2, update_info/2, to_str/1]).
+
+-include_lib("wx/include/wx.hrl").
+
+get_wx_parent(Window) ->
+    Parent = wxWindow:getParent(Window),
+    case wx:is_null(Parent) of
+	true -> Window;
+	false -> get_wx_parent(Parent)
+    end.
+
+interval_dialog(Parent0, {Timer, Value}, Min, Max) ->
+    Parent = get_wx_parent(Parent0),
+    Dialog = wxDialog:new(Parent, ?wxID_ANY, "Update Interval",
+			  [{style, ?wxDEFAULT_DIALOG_STYLE bor
+				?wxRESIZE_BORDER}]),
+    Panel = wxPanel:new(Dialog),
+    Check = wxCheckBox:new(Panel, ?wxID_ANY, "Periodical refresh"),
+    wxCheckBox:setValue(Check, Timer /= false),
+    Style = ?wxSL_HORIZONTAL bor ?wxSL_AUTOTICKS bor ?wxSL_LABELS,
+    Slider = wxSlider:new(Panel, ?wxID_ANY, Value, Min, Max,
+			  [{style, Style}, {size, {200, -1}}]),
+    wxWindow:enable(Slider, [{enable, Timer /= false}]),
+    InnerSizer = wxBoxSizer:new(?wxVERTICAL),
+    Buttons = wxDialog:createButtonSizer(Dialog, ?wxOK bor ?wxCANCEL),
+    Flags = [{flag, ?wxEXPAND bor ?wxALL}, {border, 2}],
+    wxSizer:add(InnerSizer, Check,  Flags),
+    wxSizer:add(InnerSizer, Slider, Flags),
+    wxPanel:setSizer(Panel, InnerSizer),
+    TopSizer = wxBoxSizer:new(?wxVERTICAL),
+    wxSizer:add(TopSizer, Panel, [{flag, ?wxEXPAND bor ?wxALL}, {border, 5}]),
+    wxSizer:add(TopSizer, Buttons, [{flag, ?wxEXPAND}]),
+    wxWindow:setSizerAndFit(Dialog, TopSizer),
+    wxSizer:setSizeHints(TopSizer, Dialog),
+    wxCheckBox:connect(Check, command_checkbox_clicked,
+		       [{callback, fun(#wx{event=#wxCommand{commandInt=Enable0}},_) ->
+					   Enable = Enable0 > 0,
+					   wxWindow:enable(Slider, [{enable, Enable}])
+				   end}]),
+    Res = case wxDialog:showModal(Dialog) of
+	      ?wxID_OK ->
+		  Enabled = wxCheckBox:isChecked(Check),
+		  setup_timer(Enabled, {Timer, wxSlider:getValue(Slider)});
+	      ?wxID_CANCEL ->
+		  {Timer, Value}
+	  end,
+    wxDialog:destroy(Dialog),
+    Res.
+
+stop_timer(Timer = {false, _}) -> Timer;
+stop_timer(Timer = {true, _}) -> Timer;
+stop_timer(Timer = {_, Intv}) ->
+    setup_timer(false, Timer),
+    {true, Intv}.
+start_timer(Intv) when is_integer(Intv) ->
+    setup_timer(true, {true, Intv});
+start_timer(Timer) ->
+    setup_timer(true, Timer).
+
+setup_timer(false, {Timer, Value})
+  when is_boolean(Timer) ->
+    {false, Value};
+setup_timer(true,  {false, Value}) ->
+    {ok, Timer} = timer:send_interval(Value * 1000, refresh_interval),
+    {Timer, Value};
+setup_timer(Bool, {Timer, Old}) ->
+    timer:cancel(Timer),
+    setup_timer(Bool, {false, Old}).
+
+display_info_dialog(Str) ->
+    Dlg = wxMessageDialog:new(wx:null(), Str),
+    wxMessageDialog:showModal(Dlg),
+    wxMessageDialog:destroy(Dlg),
+    ok.
+
+%% display_info(Parent, [{Title, [{Label, Info}]}]) -> {Panel, Sizer, InfoFieldsToUpdate}
+display_info(Frame, Info) ->
+    Panel = wxPanel:new(Frame),
+    wxWindow:setBackgroundColour(Panel, {255,255,255}),
+    Sizer = wxBoxSizer:new(?wxVERTICAL),
+    wxSizer:addSpacer(Sizer, 5),
+    Add = fun(BoxInfo) ->
+		  {Box, InfoFs} = create_box(Panel, BoxInfo),
+		  wxSizer:add(Sizer, Box, [{flag, ?wxEXPAND bor ?wxALL},
+					   {border, 5}]),
+		  wxSizer:addSpacer(Sizer, 5),
+		  InfoFs
+	  end,
+    InfoFs = [Add(I) || I <- Info],
+    wxWindow:setSizerAndFit(Panel, Sizer),
+    {Panel, Sizer, InfoFs}.
+
+update_info([Fields|Fs], [{_Header, SubStructure}| Rest]) ->
+    update_info2(Fields, SubStructure),
+    update_info(Fs, Rest);
+update_info([Fields|Fs], [{_Header, _Attrib, SubStructure}| Rest]) ->
+    update_info2(Fields, SubStructure),
+    update_info(Fs, Rest);
+update_info([], []) ->
+    ok.
+
+update_info2([Field|Fs], [{_Str, Value}|Rest]) ->
+    wxStaticText:setLabel(Field, to_str(Value)),
+    update_info2(Fs, Rest);
+update_info2([], []) -> ok.
+
+
+to_str(Value) when is_atom(Value) ->
+    atom_to_list(Value);
+to_str({bytes, B}) ->
+    KB = B div 1024,
+    MB = KB div 1024,
+    if
+	MB > 10 -> integer_to_list(MB) ++ " mB";
+	KB >  0 -> integer_to_list(KB) ++ " kB";
+	true -> integer_to_list(B) ++ " B "
+    end;
+to_str({time_ms, MS}) ->
+    S = MS div 1000,
+    Min = S div 60,
+    Hours = Min div 60,
+    Days = Hours div 24,
+    if
+	Days > 0 -> integer_to_list(Days) ++ " Days";
+	Hours > 0 -> integer_to_list(Hours) ++ " Hours";
+	Min > 0 -> integer_to_list(Min) ++ " Mins";
+	true -> integer_to_list(S) ++ " Secs"
+    end;
+
+to_str({A, B}) ->
+    lists:concat([A, ":", B]);
+to_str({M,F,A}) ->
+    lists:concat([M, ":", F, "/", A]);
+to_str(Value) when is_list(Value) ->
+    case lists:all(fun(X) -> is_integer(X) end, Value) of
+	true -> Value;
+	false ->
+	    lists:foldl(fun(X, Acc) ->
+				to_str(X) ++ " " ++ Acc end,
+			"", Value)
+    end;
+to_str(Port) when is_port(Port) ->
+    erlang:port_to_list(Port);
+to_str(Pid) when is_pid(Pid) ->
+    pid_to_list(Pid);
+to_str(No) when is_integer(No) ->
+    integer_to_list(No);
+to_str(ShouldNotGetHere) ->
+    erlang:error({?MODULE, to_str, ShouldNotGetHere}).
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+get_box_info({Title, List}) when is_list(List) -> {Title, ?wxALIGN_LEFT, List};
+get_box_info({Title, left, List}) -> {Title, ?wxALIGN_LEFT, List};
+get_box_info({Title, right, List}) -> {Title, ?wxALIGN_RIGHT, List}.
+
+create_box(Panel, Data) ->
+    {Title, Align, Info} = get_box_info(Data),
+    Box = wxStaticBoxSizer:new(?wxHORIZONTAL, Panel, [{label, Title}]),
+    Left  = wxBoxSizer:new(?wxVERTICAL),
+    Right = wxBoxSizer:new(?wxVERTICAL),
+    Expand    = [{flag, ?wxEXPAND}],
+    ExpAlign  = [{flag, Align}],
+    AddRow = fun({Desc, Value}) ->
+		     wxSizer:add(Left, wxStaticText:new(Panel, ?wxID_ANY, Desc ++ ":"), Expand),
+		     Field = wxStaticText:new(Panel, ?wxID_ANY, to_str(Value)),
+		     wxSizer:add(Right, Field, ExpAlign),
+		     Field
+	     end,
+    InfoFields = [AddRow(Entry) || Entry <- Info],
+    wxSizer:add(Box, Left),
+    wxSizer:addSpacer(Box, 10),
+    wxSizer:add(Box, Right),
+    wxSizer:addSpacer(Box, 30),
+    {Box, InfoFields}.