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+%%
+%% %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_wx).
+
+-behaviour(wx_object).
+
+-export([start/0]).
+-export([create_menus/2, get_attrib/1, get_tracer/0,
+ create_txt_dialog/4, try_rpc/4, return_to_localnode/2]).
+
+-export([init/1, handle_event/2, handle_cast/2, terminate/2, code_change/3,
+ handle_call/3, handle_info/2, check_page_title/1]).
+
+%% Includes
+-include_lib("wx/include/wx.hrl").
+
+-include("observer_defs.hrl").
+
+%% Defines
+
+-define(ID_PING, 1).
+-define(ID_CONNECT, 2).
+-define(ID_NOTEBOOK, 3).
+
+-define(FIRST_NODES_MENU_ID, 1000).
+-define(LAST_NODES_MENU_ID, 2000).
+
+-define(TRACE_STR, "Trace Overview").
+
+%% Records
+-record(state,
+ {frame,
+ menubar,
+ menus = [],
+ status_bar,
+ notebook,
+ main_panel,
+ pro_panel,
+ tv_panel,
+ sys_panel,
+ trace_panel,
+ active_tab,
+ node,
+ nodes
+ }).
+
+start() ->
+ wx_object:start(?MODULE, [], []).
+
+create_menus(Object, Menus) when is_list(Menus) ->
+ wx_object:call(Object, {create_menus, Menus}).
+
+get_attrib(What) ->
+ wx_object:call(observer, {get_attrib, What}).
+
+get_tracer() ->
+ wx_object:call(observer, get_tracer).
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+init(_Args) ->
+ register(observer, self()),
+ wx:new(),
+ catch wxSystemOptions:setOption("mac.listctrl.always_use_generic", 1),
+ Frame = wxFrame:new(wx:null(), ?wxID_ANY, "Observer",
+ [{size, {1000, 500}}, {style, ?wxDEFAULT_FRAME_STYLE}]),
+ IconFile = filename:join(code:priv_dir(observer), "erlang_observer.png"),
+ Icon = wxIcon:new(IconFile, [{type,?wxBITMAP_TYPE_PNG}]),
+ wxFrame:setIcon(Frame, Icon),
+ wxIcon:destroy(Icon),
+
+ State = #state{frame = Frame},
+ UpdState = setup(State),
+ net_kernel:monitor_nodes(true),
+ process_flag(trap_exit, true),
+ {Frame, UpdState}.
+
+setup(#state{frame = Frame} = State) ->
+ %% Setup Menubar & Menus
+ MenuBar = wxMenuBar:new(),
+
+ {Nodes, NodeMenus} = get_nodes(),
+ DefMenus = default_menus(NodeMenus),
+ observer_lib:create_menus(DefMenus, MenuBar, default),
+
+ wxFrame:setMenuBar(Frame, MenuBar),
+ StatusBar = wxFrame:createStatusBar(Frame, []),
+ wxFrame:setTitle(Frame, atom_to_list(node())),
+ wxStatusBar:setStatusText(StatusBar, atom_to_list(node())),
+
+ %% Setup panels
+ Panel = wxPanel:new(Frame, []),
+ Notebook = wxNotebook:new(Panel, ?ID_NOTEBOOK, [{style, ?wxBK_DEFAULT}]),
+
+ %% System Panel
+ SysPanel = observer_sys_wx:start_link(Notebook, self()),
+ wxNotebook:addPage(Notebook, SysPanel, "System", []),
+
+ %% Setup sizer create early to get it when window shows
+ MainSizer = wxBoxSizer:new(?wxVERTICAL),
+
+ wxSizer:add(MainSizer, Notebook, [{proportion, 1}, {flag, ?wxEXPAND}]),
+ wxPanel:setSizer(Panel, MainSizer),
+
+ wxNotebook:connect(Notebook, command_notebook_page_changing),
+ wxFrame:connect(Frame, close_window, [{skip, true}]),
+ wxMenu:connect(Frame, command_menu_selected),
+ wxFrame:show(Frame),
+
+ %% I postpone the creation of the other tabs so they can query/use
+ %% the window size
+
+ %% Process Panel
+ ProPanel = observer_pro_wx:start_link(Notebook, self()),
+ wxNotebook:addPage(Notebook, ProPanel, "Processes", []),
+
+ %% Table Viewer Panel
+ TVPanel = observer_tv_wx:start_link(Notebook, self()),
+ wxNotebook:addPage(Notebook, TVPanel, "Table Viewer", []),
+
+ %% Trace Viewer Panel
+ TracePanel = observer_trace_wx:start_link(Notebook, self()),
+ wxNotebook:addPage(Notebook, TracePanel, ?TRACE_STR, []),
+
+ %% Force redraw (window needs it)
+ wxWindow:refresh(Panel),
+
+ SysPid = wx_object:get_pid(SysPanel),
+ SysPid ! {active, node()},
+ UpdState = State#state{main_panel = Panel,
+ notebook = Notebook,
+ menubar = MenuBar,
+ status_bar = StatusBar,
+ sys_panel = SysPanel,
+ pro_panel = ProPanel,
+ tv_panel = TVPanel,
+ trace_panel = TracePanel,
+ active_tab = SysPid,
+ node = node(),
+ nodes = Nodes
+ },
+ %% Create resources which we don't want to duplicate
+ SysFont = wxSystemSettings:getFont(?wxSYS_DEFAULT_GUI_FONT),
+ SysFontSize = wxFont:getPointSize(SysFont),
+ Modern = wxFont:new(SysFontSize, ?wxFONTFAMILY_MODERN, ?wxFONTSTYLE_NORMAL, ?wxFONTWEIGHT_NORMAL),
+ put({font, modern}, Modern),
+ put({font, fixed}, Modern),
+ UpdState.
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%Callbacks
+handle_event(#wx{event=#wxNotebook{type=command_notebook_page_changing}},
+ #state{active_tab=Previous, node=Node} = State) ->
+ Pid = get_active_pid(State),
+ Previous ! not_active,
+ Pid ! {active, Node},
+ {noreply, State#state{active_tab=Pid}};
+
+handle_event(#wx{event = #wxClose{}}, State) ->
+ {stop, normal, State};
+
+handle_event(#wx{id = ?wxID_EXIT, event = #wxCommand{type = command_menu_selected}}, State) ->
+ {stop, normal, State};
+
+handle_event(#wx{id = ?wxID_HELP, event = #wxCommand{type = command_menu_selected}}, State) ->
+ External = "http://www.erlang.org/doc/apps/observer/index.html",
+ Internal = filename:join([code:lib_dir(observer),"doc", "html", "index.html"]),
+ Help = case filelib:is_file(Internal) of
+ true -> Internal;
+ false -> External
+ end,
+ wx_misc:launchDefaultBrowser(Help) orelse
+ create_txt_dialog(State#state.frame, "Could not launch browser: ~n " ++ Help,
+ "Error", ?wxICON_ERROR),
+ {noreply, State};
+
+handle_event(#wx{id = ?wxID_ABOUT, event = #wxCommand{type = command_menu_selected}},
+ State = #state{frame=Frame}) ->
+ AboutString = "Observe an erlang system\n"
+ "Authors: Olle Mattson & Magnus Eriksson & Dan Gudmundsson",
+ Style = [{style, ?wxOK bor ?wxSTAY_ON_TOP},
+ {caption, "About"}],
+ wxMessageDialog:showModal(wxMessageDialog:new(Frame, AboutString, Style)),
+ {noreply, State};
+
+
+handle_event(#wx{id = ?ID_CONNECT, event = #wxCommand{type = command_menu_selected}},
+ #state{frame = Frame} = State) ->
+ UpdState = case create_connect_dialog(connect, State) of
+ cancel ->
+ State;
+ {value, [], _, _} ->
+ create_txt_dialog(Frame, "Node must have a name",
+ "Error", ?wxICON_ERROR),
+ State;
+ {value, NodeName, LongOrShort, Cookie} -> %Shortname,
+ try
+ case connect(list_to_atom(NodeName), LongOrShort, list_to_atom(Cookie)) of
+ {ok, set_cookie} ->
+ change_node_view(node(), State);
+ {error, set_cookie} ->
+ create_txt_dialog(Frame, "Could not set cookie",
+ "Error", ?wxICON_ERROR),
+ State;
+ {error, net_kernel, _Reason} ->
+ create_txt_dialog(Frame, "Could not enable node",
+ "Error", ?wxICON_ERROR),
+ State
+ end
+ catch _:_ ->
+ create_txt_dialog(Frame, "Could not enable node",
+ "Error", ?wxICON_ERROR),
+ State
+ end
+ end,
+ {noreply, UpdState};
+
+handle_event(#wx{id = ?ID_PING, event = #wxCommand{type = command_menu_selected}},
+ #state{frame = Frame} = State) ->
+ UpdState = case create_connect_dialog(ping, State) of
+ cancel -> State;
+ {value, Value} when is_list(Value) ->
+ try
+ Node = list_to_atom(Value),
+ case net_adm:ping(Node) of
+ pang ->
+ create_txt_dialog(Frame, "Connect failed", "Pang", ?wxICON_EXCLAMATION),
+ State;
+ pong ->
+ change_node_view(Node, State)
+ end
+ catch _:_ ->
+ create_txt_dialog(Frame, "Connect failed", "Pang", ?wxICON_EXCLAMATION),
+ State
+ end
+ end,
+ {noreply, UpdState};
+
+handle_event(#wx{id = Id, event = #wxCommand{type = command_menu_selected}}, State)
+ when Id > ?FIRST_NODES_MENU_ID, Id < ?LAST_NODES_MENU_ID ->
+
+ Node = lists:nth(Id - ?FIRST_NODES_MENU_ID, State#state.nodes),
+ UpdState = change_node_view(Node, State),
+ {noreply, UpdState};
+
+handle_event(Event, State) ->
+ Pid = get_active_pid(State),
+ Pid ! Event,
+ {noreply, State}.
+
+handle_cast(_Cast, State) ->
+ {noreply, State}.
+
+handle_call({create_menus, TabMenus}, _From,
+ State = #state{menubar=MenuBar, menus=PrevTabMenus}) ->
+ wx:batch(fun() ->
+ clean_menus(PrevTabMenus, MenuBar),
+ observer_lib:create_menus(TabMenus, MenuBar, plugin)
+ end),
+ {reply, ok, State#state{menus=TabMenus}};
+
+handle_call({get_attrib, Attrib}, _From, State) ->
+ {reply, get(Attrib), State};
+
+handle_call(get_tracer, _From, State=#state{trace_panel=TraceP}) ->
+ {reply, TraceP, State};
+
+handle_call(_Msg, _From, State) ->
+ {reply, ok, State}.
+
+handle_info({nodeup, _Node}, State) ->
+ State2 = update_node_list(State),
+ {noreply, State2};
+
+handle_info({nodedown, Node},
+ #state{frame = Frame} = State) ->
+ State2 = case Node =:= State#state.node of
+ true ->
+ change_node_view(node(), State);
+ false ->
+ State
+ end,
+ State3 = update_node_list(State2),
+ Msg = ["Node down: " | atom_to_list(Node)],
+ create_txt_dialog(Frame, Msg, "Node down", ?wxICON_EXCLAMATION),
+ {noreply, State3};
+
+handle_info(_Info, State) ->
+ {noreply, State}.
+
+terminate(_Reason, #state{frame = Frame}) ->
+ wxFrame:destroy(Frame),
+ ok.
+
+code_change(_, _, State) ->
+ {stop, not_yet_implemented, State}.
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+try_rpc(Node, Mod, Func, Args) ->
+ case
+ rpc:call(Node, Mod, Func, Args) of
+ {badrpc, Reason} ->
+ error_logger:error_report([{node, Node},
+ {call, {Mod, Func, Args}},
+ {reason, {badrpc, Reason}}]),
+ error({badrpc, Reason});
+ Res ->
+ Res
+ end.
+
+return_to_localnode(Frame, Node) ->
+ case node() =/= Node of
+ true ->
+ create_txt_dialog(Frame, "Error occured on remote node",
+ "Error", ?wxICON_ERROR),
+ disconnect_node(Node);
+ false ->
+ ok
+ end.
+
+create_txt_dialog(Frame, Msg, Title, Style) ->
+ MD = wxMessageDialog:new(Frame, Msg, [{style, Style}]),
+ wxMessageDialog:setTitle(MD, Title),
+ wxDialog:showModal(MD),
+ wxDialog:destroy(MD).
+
+connect(NodeName, 0, Cookie) ->
+ connect2(NodeName, shortnames, Cookie);
+connect(NodeName, 1, Cookie) ->
+ connect2(NodeName, longnames, Cookie).
+
+connect2(NodeName, Opts, Cookie) ->
+ case net_adm:names() of
+ {ok, _} -> %% Epmd is running
+ ok;
+ {error, address} ->
+ Epmd = os:find_executable("epmd"),
+ os:cmd(Epmd)
+ end,
+ case net_kernel:start([NodeName, Opts]) of
+ {ok, _} ->
+ case is_alive() of
+ true ->
+ erlang:set_cookie(node(), Cookie),
+ {ok, set_cookie};
+ false ->
+ {error, set_cookie}
+ end;
+ {error, Reason} ->
+ {error, net_kernel, Reason}
+ end.
+
+change_node_view(Node, State = #state{pro_panel=Pro, sys_panel=Sys, tv_panel=Tv}) ->
+ lists:foreach(fun(Pid) -> wx_object:get_pid(Pid) ! {node, Node} end,
+ [Pro, Sys, Tv]),
+ StatusText = ["Observer - " | atom_to_list(Node)],
+ wxFrame:setTitle(State#state.frame, StatusText),
+ wxStatusBar:setStatusText(State#state.status_bar, StatusText),
+ State#state{node = Node}.
+
+check_page_title(Notebook) ->
+ Selection = wxNotebook:getSelection(Notebook),
+ wxNotebook:getPageText(Notebook, Selection).
+
+get_active_pid(#state{notebook=Notebook, pro_panel=Pro, sys_panel=Sys, tv_panel=Tv, trace_panel=Trace}) ->
+ Panel = case check_page_title(Notebook) of
+ "Processes" -> Pro;
+ "System" -> Sys;
+ "Table Viewer" -> Tv;
+ ?TRACE_STR -> Trace
+ end,
+ wx_object:get_pid(Panel).
+
+create_connect_dialog(ping, #state{frame = Frame}) ->
+ Dialog = wxTextEntryDialog:new(Frame, "Connect to node"),
+ case wxDialog:showModal(Dialog) of
+ ?wxID_OK ->
+ Value = wxTextEntryDialog:getValue(Dialog),
+ wxDialog:destroy(Dialog),
+ {value, Value};
+ ?wxID_CANCEL ->
+ wxDialog:destroy(Dialog),
+ cancel
+ end;
+create_connect_dialog(connect, #state{frame = Frame}) ->
+ Dialog = wxDialog:new(Frame, ?wxID_ANY, "Distribute node "),
+
+ VSizer = wxBoxSizer:new(?wxVERTICAL),
+ RadioBoxSizer = wxBoxSizer:new(?wxHORIZONTAL),
+
+ Choices = ["Short name", "Long name"],
+ RadioBox = wxRadioBox:new(Dialog, 1, "",
+ ?wxDefaultPosition,
+ ?wxDefaultSize,
+ Choices,
+ [{majorDim, 2},
+ {style, ?wxHORIZONTAL}]),
+
+ NameText = wxStaticText:new(Dialog, ?wxID_ANY, "Node name: "),
+ NameCtrl = wxTextCtrl:new(Dialog, ?wxID_ANY, [{size, {200, 25}}]),
+ wxTextCtrl:setValue(NameCtrl, "observer"),
+ CookieText = wxStaticText:new(Dialog, ?wxID_ANY, "Secret cookie: "),
+ CookieCtrl = wxTextCtrl:new(Dialog, ?wxID_ANY,
+ [{size, {200, 25}}, {style, ?wxTE_PASSWORD}]),
+
+ BtnSizer = wxDialog:createStdDialogButtonSizer(Dialog, ?wxID_DEFAULT),
+ Flags = [{flag, ?wxEXPAND bor ?wxALL}, {border, 5}],
+ wxSizer:add(RadioBoxSizer, RadioBox, Flags),
+
+ wxSizer:add(VSizer, RadioBoxSizer, Flags),
+ wxSizer:addSpacer(VSizer, 10),
+ wxSizer:add(VSizer, NameText),
+ wxSizer:add(VSizer, NameCtrl, Flags),
+ wxSizer:addSpacer(VSizer, 10),
+ wxSizer:add(VSizer, CookieText),
+ wxSizer:add(VSizer, CookieCtrl, Flags),
+ wxSizer:addSpacer(VSizer, 10),
+ wxSizer:add(VSizer, BtnSizer, [{flag, ?wxALIGN_LEFT}]),
+
+ wxWindow:setSizer(Dialog, VSizer),
+ CookiePath = filename:join(os:getenv("HOME"), ".erlang.cookie"),
+ DefaultCookie = case filelib:is_file(CookiePath) of
+ true ->
+ {ok, Bin} = file:read_file(CookiePath),
+ binary_to_list(Bin);
+ false ->
+ ""
+ end,
+ wxTextCtrl:setValue(CookieCtrl, DefaultCookie),
+ case wxDialog:showModal(Dialog) of
+ ?wxID_OK ->
+ NameValue = wxTextCtrl:getValue(NameCtrl),
+ NameLngthValue = wxRadioBox:getSelection(RadioBox),
+ CookieValue = wxTextCtrl:getValue(CookieCtrl),
+ wxDialog:destroy(Dialog),
+ {value, NameValue, NameLngthValue, CookieValue};
+ ?wxID_CANCEL ->
+ wxDialog:destroy(Dialog),
+ cancel
+ end.
+
+default_menus(NodesMenuItems) ->
+ Quit = #create_menu{id = ?wxID_EXIT, text = "Quit"},
+ About = #create_menu{id = ?wxID_ABOUT, text = "About"},
+ Help = #create_menu{id = ?wxID_HELP},
+ NodeMenu = case erlang:is_alive() of
+ true -> {"Nodes", NodesMenuItems ++
+ [#create_menu{id = ?ID_PING, text = "Connect Node"}]};
+ false -> {"Nodes", NodesMenuItems ++
+ [#create_menu{id = ?ID_CONNECT, text = "Enable distribution"}]}
+ end,
+ case os:type() =:= {unix, darwin} of
+ false ->
+ FileMenu = {"File", [Quit]},
+ HelpMenu = {"Help", [About,Help]},
+ [FileMenu, NodeMenu, HelpMenu];
+ true ->
+ %% On Mac quit and about will be moved to the "default' place
+ %% automagicly, so just add them to a menu that always exist.
+ %% But not to the help menu for some reason
+ {Tag, Menus} = NodeMenu,
+ [{Tag, Menus ++ [Quit,About]}, {"&Help", [Help]}]
+ end.
+
+clean_menus(Menus, MenuBar) ->
+ remove_menu_items(Menus, MenuBar).
+
+remove_menu_items([{MenuStr = "File", Menus}|Rest], MenuBar) ->
+ MenuId = wxMenuBar:findMenu(MenuBar, MenuStr),
+ Menu = wxMenuBar:getMenu(MenuBar, MenuId),
+ Items = [wxMenu:findItem(Menu, Tag) || #create_menu{text=Tag} <- Menus],
+ [wxMenu:delete(Menu, MItem) || MItem <- Items],
+ case os:type() =:= {unix, darwin} of
+ true ->
+ wxMenuBar:remove(MenuBar, MenuId),
+ wxMenu:destroy(Menu);
+ false ->
+ ignore
+ end,
+ remove_menu_items(Rest, MenuBar);
+remove_menu_items([{"Nodes", _}|_], _MB) ->
+ ok;
+remove_menu_items([{Tag, _Menus}|Rest], MenuBar) ->
+ MenuId = wxMenuBar:findMenu(MenuBar, Tag),
+ Menu = wxMenuBar:getMenu(MenuBar, MenuId),
+ wxMenuBar:remove(MenuBar, MenuId),
+ Items = wxMenu:getMenuItems(Menu),
+ [wxMenu:'Destroy'(Menu, Item) || Item <- Items],
+ wxMenu:destroy(Menu),
+ remove_menu_items(Rest, MenuBar);
+remove_menu_items([], _MB) ->
+ ok.
+
+get_nodes() ->
+ Nodes = [node()| nodes()],
+ {_, Menues} =
+ lists:foldl(fun(Node, {Id, Acc}) when Id < ?LAST_NODES_MENU_ID ->
+ {Id + 1, [#create_menu{id=Id + ?FIRST_NODES_MENU_ID,
+ text=atom_to_list(Node)} | Acc]}
+ end, {1, []}, Nodes),
+ {Nodes, lists:reverse(Menues)}.
+
+update_node_list(State = #state{menubar=MenuBar}) ->
+ {Nodes, NodesMenuItems} = get_nodes(),
+ NodeMenuId = wxMenuBar:findMenu(MenuBar, "Nodes"),
+ NodeMenu = wxMenuBar:getMenu(MenuBar, NodeMenuId),
+ wx:foreach(fun(Item) -> wxMenu:'Destroy'(NodeMenu, Item) end,
+ wxMenu:getMenuItems(NodeMenu)),
+
+ Index = wx:foldl(fun(Record, Index) ->
+ observer_lib:create_menu_item(Record, NodeMenu, Index)
+ end, 0, NodesMenuItems),
+
+ Dist = case erlang:is_alive() of
+ true -> #create_menu{id = ?ID_PING, text = "Connect node"};
+ false -> #create_menu{id = ?ID_CONNECT, text = "Enable distribution"}
+ end,
+ observer_lib:create_menu_item(Dist, NodeMenu, Index),
+ State#state{nodes = Nodes}.