%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 2011-2013. 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(cdv_mem_wx).

-export([get_info/0]).

-include("crashdump_viewer.hrl").
-include_lib("wx/include/wx.hrl").

get_info() ->
    {AllocInfo,AllocTW} = get_alloc_info(),
    [{"Memory",cdv_info_page,get_mem_info()}
     | [{Title,cdv_table_page,{Cols,Data,AllocTW}} ||
	   {Title,Cols,Data} <- AllocInfo]] ++
	[{"Allocated Areas",cdv_table_page,get_area_info()}].


%%%-----------------------------------------------------------------
%%% Memory page
get_mem_info() ->
    {ok,Info,TW} = crashdump_viewer:memory(),
    {[{"Memory Information",gen_mem_info_fields(Info)}],Info,TW}.

gen_mem_info_fields([{Key,_}|T]) ->
    [{upper(atom_to_list(Key)),{bytes,Key}}|gen_mem_info_fields(T)];
gen_mem_info_fields([]) ->
    [].

upper(Key) ->
    string:join([string:to_upper([H]) ++ T || 
		    [H|T] <- string:tokens(Key,"_")]," ").


%%%-----------------------------------------------------------------
%%% Allocated areas page
get_area_info() ->
    {ok,Info0,TW} = crashdump_viewer:allocated_areas(),
    Info = [tuple_to_list(R) || R <- Info0],
    {area_columns(),Info,TW}.

area_columns() ->
    [{"",                 ?wxLIST_FORMAT_LEFT,  150},
     {"Allocated (bytes)",?wxLIST_FORMAT_RIGHT, 150},
     {"Used (bytes)",     ?wxLIST_FORMAT_RIGHT, 150}].

%%%-----------------------------------------------------------------
%%% Allocator page
get_alloc_info() ->
    {ok,Info,TW} = crashdump_viewer:allocator_info(),
    {fix_alloc(Info),TW}.

fix_alloc([{Title,Columns,Data}|Tables]) ->
    [{Title,alloc_columns(Columns),
     [[Key|Values] || {Key,Values} <- Data]} |
     fix_alloc(Tables)];
fix_alloc([{Title,[{_,V}|_]=Data}|Tables]) ->
    fix_alloc([{Title,lists:duplicate(length(V),[]),Data}|Tables]);
fix_alloc([]) ->
    [].

alloc_columns(Columns) ->
    [{"",   ?wxLIST_FORMAT_LEFT,  200} |
     [{Column, ?wxLIST_FORMAT_RIGHT, 150} || Column <- Columns]].