%%
%% %CopyrightBegin%
%%
%% Copyright Ericsson AB 1997-2009. 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%
%%%*********************************************************************
%%%
%%% Description: Code for pw, the window controlling part of the table tool.
%%%
%%%*********************************************************************
-module(tv_pw).
-export([pw/1]).
-include("tv_int_def.hrl").
-include("tv_int_msg.hrl").
-include("tv_pw_int_def.hrl").
%%%*********************************************************************
%%% EXTERNAL FUNCTIONS
%%%*********************************************************************
%%======================================================================
%% Function: pw.
%%
%% Return Value: None.
%%
%% Description: Process controlling the graphical window, as well as the
%% menubuttons.
%%
%% Parameters: None.
%%======================================================================
pw(Master) ->
process_flag(trap_exit, true),
ProcVars = #process_variables{master_pid = Master},
blocked(ProcVars).
%%%********************************************************************
%%% INTERNAL FUNCTIONS
%%%********************************************************************
%%======================================================================
%% Function: blocked.
%%
%% Return Value: None.
%%
%% Description: When started or explicitly blocked, pw enters this state,
%% where nothing is performed until the module explicitly is
%% deblocked.
%%
%% Parameters:
%%======================================================================
blocked(ProcVars) ->
receive
Msg ->
case Msg of
#pw_deblock{} ->
deblock(Msg, ProcVars);
_Other ->
blocked(ProcVars)
end
end.
%%======================================================================
%% Function: deblocked.
%%
%% Return Value: None.
%%
%% Description: When deblocked, a window shall be created according to
%% specification received in pw_deblock message.
%%
%% Parameters: Rec: received pw_deblock message.
%%======================================================================
deblock(Msg, ProcVars) ->
#process_variables{window_params = WinP,
menu_params = MenuP} = ProcVars,
NewWinP = ?WIN_FUNC_FILE:create_window(Msg, WinP),
NewMenuP = ?WIN_FUNC_FILE:create_menubar(NewWinP, MenuP),
Sender = Msg#pw_deblock.sender,
Sender ! #pw_deblock_cfm{sender = self(),
win_id = NewWinP#window_params.window_id
},
NewProcVars = ProcVars#process_variables{window_params = NewWinP,
menu_params = NewMenuP
},
deblocked_loop(NewProcVars).
%%======================================================================
%% Function:
%%
%% Return Value:
%%
%% Description:
%%
%% Parameters:
%%======================================================================
deblocked_loop(ProcVars) ->
receive
Msg ->
case Msg of
{gs, Id, Event, Data, Args} ->
NewProcVars = gs_messages({Id, Event, Data, Args}, ProcVars),
deblocked_loop(NewProcVars);
% Messages from pc!
#pw_select_menu{menu=Menu} ->
gs:config(Menu, [{select,true}]),
deblocked_loop(ProcVars);
#pw_create_menu{} ->
NewProcVars = ?WIN_FUNC_FILE:create_menu(Msg, ProcVars),
% Send confirmation...
Sender = Msg#pw_create_menu.sender,
Sender ! #pw_create_menu_cfm{sender = self()},
deblocked_loop(NewProcVars);
#pw_set_window_title{win_title = WinTitle} ->
WinP = ProcVars#process_variables.window_params,
gs:config(WinP#window_params.window_id, [{title, "[TV] " ++ WinTitle}]),
NewWinP = WinP#window_params{window_title = WinTitle},
NewProcVars = ProcVars#process_variables{window_params = NewWinP},
deblocked_loop(NewProcVars);
#pw_deblock{} ->
deblock(Msg, ProcVars);
% Exit signals!
{'EXIT', Pid, Reason} ->
MasterPid = ProcVars#process_variables.master_pid,
exit_signals({Pid, Reason}, MasterPid),
deblocked_loop(ProcVars);
_Other ->
deblocked_loop(ProcVars)
end
end.
%%======================================================================
%% Function:
%%
%% Return Value:
%%
%% Description:
%%
%% Parameters:
%%======================================================================
exit_signals(Exit_info, MasterPid) ->
case Exit_info of
{MasterPid, _Reason} -> % When from master, just quit!
exit(normal);
_Other ->
done
end.
%%======================================================================
%% Function:
%%
%% Return Value:
%%
%% Description:
%%
%% Parameters:
%%======================================================================
gs_messages(Msg, ProcVars) ->
MasterPid = ProcVars#process_variables.master_pid,
case Msg of
{_Id, click, Data, _Args} ->
MasterPid ! #pc_menu_msg{sender = self(),
data = Data},
ProcVars;
{_Win, keypress, _Data, [Key, _ , _, 1 | _T]} ->
MenuP = ProcVars#process_variables.menu_params,
ShortcutList = MenuP#menu_params.shortcuts,
send_shortcut_data(Key, ShortcutList, MasterPid),
ProcVars;
Msg0 = {Win, configure, _, _} ->
{Win, configure, _, [W, H | _T]} = flush_msgs(Msg0),
WinP = ProcVars#process_variables.window_params,
#window_params{window_id = WindowId,
min_window_width = MinAllowedWidth,
min_window_height = MinAllowedHeight} = WinP,
FinalWidth = ?COMM_FUNC_FILE:max(W, MinAllowedWidth),
FinalHeight = ?COMM_FUNC_FILE:max(H, MinAllowedHeight),
?WIN_FUNC_FILE:resize_window(WindowId, FinalWidth, FinalHeight),
MasterPid ! #pc_win_conf{sender = self(),
width = FinalWidth,
height = FinalHeight},
NewWinP = WinP#window_params{window_width = FinalWidth,
window_height = FinalHeight
},
ProcVars#process_variables{window_params = NewWinP};
{_Win, destroy, _Data, _Args} ->
exit(normal);
_Other ->
ProcVars
end.
flush_msgs(Msg0 = {Win, Op, _, _}) ->
receive {gs, Win,Op,D,P} ->
flush_msgs({Win,Op,D,P})
after 200 ->
Msg0
end.
send_shortcut_data(_Key, [], _MasterPid) ->
done;
send_shortcut_data(Key, ShortcutList, MasterPid) ->
case lists:keysearch(Key, 1, ShortcutList) of
{value, {Key, Data}} ->
MasterPid ! #pc_menu_msg{sender = self(),
data = Data};
false ->
done
end.
