Root functor: Board.oz

Source File

local 
 
   PickleCompressionLevel = 9
    
   local 
      InitServer = {NewName}
   in 
      class Server 
         attr 
            port close serve
             
         meth !InitServer(?Port)
            proc {Serve X|Xs}
               {@serve X}
               {Serve Xs}
            end 
            Stream
            CloseException = {NewName}
         in 
            proc {@close}
               raise CloseException end 
            end 
            {NewPort Stream Port}
            @port  = Port
            @serve = self 
            thread 
               try 
                  {Serve Stream}
               catch 
                  !CloseException then skip 
               end 
            end 
         end 
      end 
       
      fun {NewServer Class Init}
         Port
         Object = {New Class InitServer(Port)}
      in 
         {Object Init}
         Port
      end 
       
   end 
    
   proc {NewAgenda ?Port ?Connect}
      Stream
   in 
      {NewPort Stream Port}
      proc {Connect P}
         thread 
            {ForAll Stream proc {$ M} {Send P M} end}
         end 
      end 
   end 
    
   fun {NewBoardFunctor IsMaster Ticket User}
       
      ArgSpec = record(master(single type:bool default:IsMaster)
                       ticket(single type:atom default:Ticket)
                       user(single type:atom   default:User))
 
   in 
       
      functor 
       
      import 
         Tk
         TkTools
         Connection
         OS
         Application
         Pickle
       
      define 
    
         Args = {Application.getCmdArgs ArgSpec}
 
         proc {SendApplet FileName Subject To}
            if 
               {OS.system ('metasend -b -e base64 -f '#FileName# 
                           ' -m application/x-oz-application'# 
                           ' -s "'#Subject#'" -t '#To)}\=0
            then 
               raise failed(mail) end 
            end 
         end 
 
         class Board from Server 
            attr 
               agenda connect
             
            meth init 
               {NewAgenda @agenda @connect}
            end 
          
            meth newWindow($)
               Connect = @connect % Don't pass reference to object
            in 
               proc {$ Tk Desc}
                  {NewServer Window init(Tk
                                         {AdjoinAt Desc
                                          agenda @agenda}
                                         Connect) _}
               end 
            end 
          
            meth newTool(Label BClass WClass)
               T = {NewServer Tool init(BClass @agenda)}
            in 
               {Send @agenda newTool(Label T WClass)}
            end 
          
            meth newUser(UserId Name)
               {Send @agenda newUser(UserId Name)}
            end 
          
            meth deleteUser(UserId)
               {Send @agenda deleteUser(UserId)}
            end 
          
            meth close 
               {Send @agenda shutdown}
               {@close}
            end 
         end 
       
         class Tool from Server 
            attr 
               bClass  agenda
             
            meth init(BClass Agenda) % invoked by Board
               @bClass  = BClass
               @agenda  = Agenda
            end 
          
            meth newBObj(X Y) % invoked by Window
               {NewServer @bClass init(@agenda @port X Y) _}
            end 
         end 
       
         class BObject 
            from Server 
               %% virtual, needs attributes kind, props, dx, dy
            attr 
               agenda
               updating: false 
             
            meth init(Agenda Tool X Y) % invoked by Tool
               Message = create(@kind X Y X+@dx Y+@dy
                                {List.toRecord o {self GetProps($)}})
            in 
               @agenda = Agenda
               {Send @agenda newWObj(@port Tool Message)}
            end 
          
            meth requestUpdate(Window) % invoked by Window
               if @updating then {Send Window rejectRequest}
               else 
                  updating <- true 
                  {Send Window grantUpdate({self GetProps($)} @port)}
               end 
            end 
          
            meth requestClose(Window) % invoked by Window
               if @updating then {Send Window rejectRequest}
               else 
                  {Send @agenda closeWObj(@port Window)}
                  {@close}
               end 
            end 
          
            meth update(NewProps) % invoked by Dialog
               {ForAll NewProps proc {$ A#V} A <- V end}
               {Send @agenda updateWObj(@port NewProps)}
               updating <- false 
            end 
          
            meth GetProps($)
               {Map @props fun {$ A} A#@A end}
            end 
         end 
       
         class Window from Server 
            attr 
               tk  top  bar  radio  canvas
               tool page1 page2
               BObj2WObj:   nil
               Tool2WClass: nil
               Name2Label:  nil
               BGColor:     ivory
               Busy:        false 
               MyDialog:    nil
             
             
            meth init(Tk Desc ConnectToAgenda) % invoked by Board
               proc {ActionNewBObj X Y}
                  {Send @port NewBObj(X Y)}
               end 
               proc {ActionDelete}
                  {Send Desc.agenda deleteUser(Desc.user)}  
                  {Send @port   Close}
                  if {HasFeature Desc close} then 
                     {Desc.close}
                  end 
               end 
               Title   = {CondSelect Desc title 'Drawing Board'}
               TkTools = Tk.tools
            in 
               @tool   = {NewPort _}
               @tk     = Tk
               @top    = {New Tk.toplevel
                          tkInit(title:Title delete:ActionDelete
                                 withdraw:true)}
               @page1  = {New TkTools.textframe tkInit(parent:@top text:'Tools')}
               @radio  = {New Tk.variable tkInit}
               @page2  = {New TkTools.textframe tkInit(parent:@top text:'Users')}
               @canvas = {New Tk.canvas
                          tkInit(parent:@top bd:2 relief:sunken
                                 width:300 height:300 bg:@BGColor)}
               {@canvas tkBind(event:  '<1>' 
                               args:   [int(x) int(y)]
                               action: ActionNewBObj)}
               {Tk.batch [grid(@page1  row:0 column:0 pady:4 sticky:ew)
                          grid(@page2  row:1 column:0 pady:4 sticky:ew)
                          grid(@canvas row:0 column:1 sticky:sn padx:2 pady:2
                               rowspan:4)
                          grid({New Tk.buttobsp;                 {Send Window grantUpdate({self GetProps($)}&neeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee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