{-# OPTIONS -cpp #-}

{- |

Module : $Header$

Copyright : (c) Uni Bremen 2002-2005

License : similar to LGPL, see HetCATS/LICENSE.txt or LIZENZ.txt

Maintainer : Christian.Maeder@dfki.de

Stability : provisional

Portability : non-portable (Logic)

display the final graph

-}

module GUI.ShowGraph

(showGraph)

where

import Driver.Options(HetcatsOpts,putIfVerbose)

import Static.DevGraph

import Common.LibName

import GUI.GraphDisplay

import GUI.GraphTypes

import GUI.ShowLibGraph

#ifdef GTKGLADE

import GUI.GtkUtils(startMainLoop, stopMainLoop)

#endif

import Reactor.InfoBus (shutdown)

import HTk.Toolkit.DialogWin (useHTk)

import Common.UniUtils

import Data.IORef

import Control.Concurrent.MVar

import Common.Exception

import Interfaces.DataTypes

showGraph :: FilePath -> HetcatsOpts ->

Maybe (LIB_NAME, -- filename

LibEnv -- DGraphs for imported modules

) -> IO ()

showGraph file opts env = case env of

Just (ln, le) -> do

putIfVerbose opts 2 $ "Trying to display " ++ file

++ " in a graphical window"

putIfVerbose opts 3 "Initializing Converter"

#ifdef GTKGLADE

eitherGTK <- try startMainLoop

case eitherGTK of

Right () -> return ()

Left e -> do

putIfVerbose opts 5 $ "Error: " ++ show e

error $ "Can't initialize GTK."

#endif

eitherHTK <- try initializeConverter

(gInfo,wishInst) <- case eitherHTK of

Right a -> return a

Left e -> do

putIfVerbose opts 5 $ "Error: " ++ show e

error $ "Can't initialize GUI."

useHTk -- All messages are displayed in TK dialog windows

-- from this point on

ost <- readIORef $ intState gInfo

let nwst = case i_state ost of

Nothing -> ost

Just ist -> ost{ i_state = Just $ ist { i_libEnv = le

, i_ln = ln},

filename = file}

writeIORef (intState gInfo) nwst

let gInfo' = gInfo { hetcatsOpts = opts

, libName = ln }

showLibGraph gInfo'

mShowGraph gInfo' ln

takeMVar $ exitMVar gInfo'

#ifdef GTKGLADE

stopMainLoop

#endif

destroy wishInst

shutdown

Nothing -> putIfVerbose opts 1 $ "Error: Basic Analysis is neccessary "

++ "to display graphs in a graphical window"