%%
%% %CopyrightBegin%
%% 
  Copyright Ericsson AB 2009 - 2016 . All Rights Reserved .
%% 
  Licensed under the Apache License , Version 2.0 ( the " License " ) ;
%% you may not use this file except in compliance with the License.
%% You may obtain a copy of the License at
%%
%%     -2.0
%%
%% Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an " AS IS " BASIS ,
%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
%% See the License for the specific language governing permissions and
%% limitations under the License.
%% 
%% %CopyrightEnd%

-module(ex_grid).

-behaviour(wx_object).

%% Client API
-export([start/1]).

%% wx_object callbacks
-export([init/1, terminate/2,  code_change/3,
	 handle_info/2, handle_call/3, handle_cast/2, handle_event/2]).

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

-record(state, 
	{
	  parent,
	  config,
	  grid
	}).

start(Config) ->
    wx_object:start_link(?MODULE, Config, []).

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
init(Config) ->
    wx:batch(fun() -> do_init(Config) end).

do_init(Config) ->
    Parent = proplists:get_value(parent, Config),  
    Panel = wxPanel:new(Parent, []),

    %% Setup sizers
    MainSizer = wxBoxSizer:new(?wxVERTICAL),
    Sizer = wxStaticBoxSizer:new(?wxVERTICAL, Panel, 
				 [{label, "wxGrid"}]),

    Grid = create_grid(Panel),

    %% Add to sizers
    Options = [{flag, ?wxEXPAND}, {proportion, 1}],

    wxSizer:add(Sizer, Grid, Options),
    wxSizer:add(MainSizer, Sizer, Options),

    wxPanel:setSizer(Panel, MainSizer),
    {Panel, #state{parent=Panel, config=Config,
		  grid = Grid}}.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Async Events are handled in handle_event as in handle_info
handle_event(#wx{event = #wxGrid{type = grid_cell_changed,
				 row = Row, col = Col}},
	     State = #state{}) ->
    Val = wxGrid:getCellValue(State#state.grid, Row, Col),
    demo:format(State#state.config, "Cell {~p,~p} changed to ~p.\n",
		[Row,Col,Val]),
    {noreply, State}.

%% Callbacks handled as normal gen_server callbacks
handle_info(_Msg, State) ->
    {noreply, State}.

handle_call(shutdown, _From, State=#state{parent=Panel}) ->
    wxPanel:destroy(Panel),
    {stop, normal, ok, State};

handle_call(_Msg, _From, State) ->
    {reply,{error, nyi}, State}.

handle_cast(Msg, State) ->
    io:format("Got cast ~p~n",[Msg]),
    {noreply,State}.

code_change(_, _, State) ->
    {stop, ignore, State}.

terminate(_Reason, _State) ->
    ok.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% Local functions
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

create_grid(Panel) ->
  Create the grid with 100 * 5 cells
    Grid = wxGrid:new(Panel, 2, []),
    wxGrid:createGrid(Grid, 100, 5),

    Font = wxFont:new(16, ?wxFONTFAMILY_SWISS,
		      ?wxFONTSTYLE_NORMAL,
		      ?wxFONTWEIGHT_NORMAL, []),
    %% Fun to set the values and flags of the cells
    Fun =
	fun(Row) ->
		wxGrid:setCellValue(Grid, Row, 0, "Editable"),
		wxGrid:setCellValue(Grid, Row, 1, "Editable"),
		wxGrid:setCellValue(Grid, Row, 2, "Editable"),
		wxGrid:setCellValue(Grid, Row, 3, "Read only"),
		wxGrid:setCellTextColour(Grid, Row, 3, ?wxWHITE),
		wxGrid:setReadOnly(Grid, Row, 3, [{isReadOnly,true}]),
		wxGrid:setCellValue(Grid, Row, 4, "Editable"),
		case Row rem 4 of
		    0 -> wxGrid:setCellBackgroundColour(Grid, Row, 3, ?wxRED);
		    1 -> wxGrid:setCellBackgroundColour(Grid, Row, 3, ?wxGREEN),
			 wxGrid:setCellTextColour(Grid, Row, 2, {255,215,0,255});
		    2 -> wxGrid:setCellBackgroundColour(Grid, Row, 3, ?wxBLUE);
		    _ -> wxGrid:setCellBackgroundColour(Grid, Row, 1, ?wxCYAN),
			 wxGrid:setCellValue(Grid, Row, 1,
					     "Centered\nhorizontally"),
			 wxGrid:setCellAlignment(Grid, Row, 4,
						 0,?wxALIGN_CENTER),
			 wxGrid:setCellValue(Grid, Row, 4,
					     "Centered\nvertically"),
			 wxGrid:setCellAlignment(Grid, Row, 1,
						 ?wxALIGN_CENTER,0),
			 wxGrid:setCellTextColour(Grid, Row, 3, ?wxBLACK),
			 wxGrid:setCellAlignment(Grid, Row, 2,
						 ?wxALIGN_CENTER,
						 ?wxALIGN_CENTER),
			 wxGrid:setCellFont(Grid, Row, 0, Font),
			 wxGrid:setCellValue(Grid, Row, 2,
					     "Centered vertically\nand horizontally"),
			 wxGrid:setRowSize(Grid, Row, 80)
		end
	end,
    %% Apply the fun to each row
    wx:foreach(Fun, lists:seq(0,99)),
    wxGrid:setColSize(Grid, 2, 150),
    wxGrid:connect(Grid, grid_cell_changed),
    Grid.




 %CopyrightBegin%
 
 
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

     -2.0

 Unless required by applicable law or agreed to in writing, software
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 
 %CopyrightEnd%
 Client API
 wx_object callbacks

 Setup sizers
 Add to sizers

 Async Events are handled in handle_event as in handle_info
 Callbacks handled as normal gen_server callbacks

 Local functions

 Fun to set the values and flags of the cells
 Apply the fun to each row
  Copyright Ericsson AB 2009 - 2016 . All Rights Reserved .
  Licensed under the Apache License , Version 2.0 ( the " License " ) ;
  distributed under the License is distributed on an " AS IS " BASIS ,

-module(ex_grid).

-behaviour(wx_object).

-export([start/1]).

-export([init/1, terminate/2,  code_change/3,
	 handle_info/2, handle_call/3, handle_cast/2, handle_event/2]).

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

-record(state, 
	{
	  parent,
	  config,
	  grid
	}).

start(Config) ->
    wx_object:start_link(?MODULE, Config, []).

init(Config) ->
    wx:batch(fun() -> do_init(Config) end).

do_init(Config) ->
    Parent = proplists:get_value(parent, Config),  
    Panel = wxPanel:new(Parent, []),

    MainSizer = wxBoxSizer:new(?wxVERTICAL),
    Sizer = wxStaticBoxSizer:new(?wxVERTICAL, Panel, 
				 [{label, "wxGrid"}]),

    Grid = create_grid(Panel),

    Options = [{flag, ?wxEXPAND}, {proportion, 1}],

    wxSizer:add(Sizer, Grid, Options),
    wxSizer:add(MainSizer, Sizer, Options),

    wxPanel:setSizer(Panel, MainSizer),
    {Panel, #state{parent=Panel, config=Config,
		  grid = Grid}}.

handle_event(#wx{event = #wxGrid{type = grid_cell_changed,
				 row = Row, col = Col}},
	     State = #state{}) ->
    Val = wxGrid:getCellValue(State#state.grid, Row, Col),
    demo:format(State#state.config, "Cell {~p,~p} changed to ~p.\n",
		[Row,Col,Val]),
    {noreply, State}.

handle_info(_Msg, State) ->
    {noreply, State}.

handle_call(shutdown, _From, State=#state{parent=Panel}) ->
    wxPanel:destroy(Panel),
    {stop, normal, ok, State};

handle_call(_Msg, _From, State) ->
    {reply,{error, nyi}, State}.

handle_cast(Msg, State) ->
    io:format("Got cast ~p~n",[Msg]),
    {noreply,State}.

code_change(_, _, State) ->
    {stop, ignore, State}.

terminate(_Reason, _State) ->
    ok.


create_grid(Panel) ->
  Create the grid with 100 * 5 cells
    Grid = wxGrid:new(Panel, 2, []),
    wxGrid:createGrid(Grid, 100, 5),

    Font = wxFont:new(16, ?wxFONTFAMILY_SWISS,
		      ?wxFONTSTYLE_NORMAL,
		      ?wxFONTWEIGHT_NORMAL, []),
    Fun =
	fun(Row) ->
		wxGrid:setCellValue(Grid, Row, 0, "Editable"),
		wxGrid:setCellValue(Grid, Row, 1, "Editable"),
		wxGrid:setCellValue(Grid, Row, 2, "Editable"),
		wxGrid:setCellValue(Grid, Row, 3, "Read only"),
		wxGrid:setCellTextColour(Grid, Row, 3, ?wxWHITE),
		wxGrid:setReadOnly(Grid, Row, 3, [{isReadOnly,true}]),
		wxGrid:setCellValue(Grid, Row, 4, "Editable"),
		case Row rem 4 of
		    0 -> wxGrid:setCellBackgroundColour(Grid, Row, 3, ?wxRED);
		    1 -> wxGrid:setCellBackgroundColour(Grid, Row, 3, ?wxGREEN),
			 wxGrid:setCellTextColour(Grid, Row, 2, {255,215,0,255});
		    2 -> wxGrid:setCellBackgroundColour(Grid, Row, 3, ?wxBLUE);
		    _ -> wxGrid:setCellBackgroundColour(Grid, Row, 1, ?wxCYAN),
			 wxGrid:setCellValue(Grid, Row, 1,
					     "Centered\nhorizontally"),
			 wxGrid:setCellAlignment(Grid, Row, 4,
						 0,?wxALIGN_CENTER),
			 wxGrid:setCellValue(Grid, Row, 4,
					     "Centered\nvertically"),
			 wxGrid:setCellAlignment(Grid, Row, 1,
						 ?wxALIGN_CENTER,0),
			 wxGrid:setCellTextColour(Grid, Row, 3, ?wxBLACK),
			 wxGrid:setCellAlignment(Grid, Row, 2,
						 ?wxALIGN_CENTER,
						 ?wxALIGN_CENTER),
			 wxGrid:setCellFont(Grid, Row, 0, Font),
			 wxGrid:setCellValue(Grid, Row, 2,
					     "Centered vertically\nand horizontally"),
			 wxGrid:setRowSize(Grid, Row, 80)
		end
	end,
    wx:foreach(Fun, lists:seq(0,99)),
    wxGrid:setColSize(Grid, 2, 150),
    wxGrid:connect(Grid, grid_cell_changed),
    Grid.


