{-# OPTIONS_GHC -XTypeSynonymInstances -XScopedTypeVariables #-}
-----------------------------------------------------------------------------
--
-- Module       :  IDE.Menu
-- Copyright   :  (c) Juergen Nicklisch-Franken (aka Jutaro)
-- License     :  GNU-GPL
--
-- Maintainer  :  Juergen Nicklisch-Franken <info at leksah.org>
-- Stability   :  experimental
-- Portability :  portable
--
--
-- | Module for actions, menus and toolbars and the rest ...
--
-------------------------------------------------------------------------------


module IDE.Menu (
    actions
,   menuDescription
,   makeMenu
,   quit
,   aboutDialog
,   buildStatusbar
,   newIcons
,   setSensitivity
) where

import Graphics.UI.Gtk
import Graphics.UI.Gtk.Types
import Control.Monad.Reader
import System.FilePath
import Data.Version
import Prelude hiding (catch)
import Control.Exception
import Data.Maybe


import IDE.Core.State
import IDE.Pane.SourceBuffer
import IDE.Pane.Preferences
import IDE.Pane.PackageFlags
import IDE.Pane.PackageEditor
import IDE.Package
import IDE.Pane.Log
import IDE.SaveSession
import IDE.Pane.Modules
import IDE.Find
import IDE.FileUtils
import IDE.Pane.ClassHierarchy
import IDE.Pane.Search
import IDE.Pane.Callers
import Paths_leksah
import IDE.GUIHistory
import Debug.Trace
import IDE.Metainfo.Provider (rebuildLibInfo,rebuildActiveInfo)
import IDE.Pane.Info (showInfo)
--
-- | The Actions known to the system (they can be activated by keystrokes or menus)
--
actions :: [ActionDescr IDERef]
actions =
    [(AD "File" "_File" Nothing Nothing (return ()) [] False)
    ,(AD "FileNew" "_New" Nothing (Just "gtk-new")
        fileNew [] False)
    ,AD "FileOpen" "_Open" Nothing (Just "gtk-open")
        fileOpen [] False
    ,AD "FileRevert" "_Revert" Nothing Nothing
        fileRevert [] False
    ,AD "FileSave" "_Save" Nothing (Just "gtk-save")
        (fileSave False) [] False
    ,AD "FileSaveAs" "Save_As" Nothing (Just "gtk-save_as")
        (fileSave True) [] False
    ,AD "FileClose" "_Close" Nothing (Just "gtk-close")
        (do fileClose; return ()) [] False
    ,AD "FileCloseAll" "Close All" Nothing Nothing
        (do fileCloseAll; return ()) [] False
    ,AD "FileCloseAllButPackage" "Close All But Package" Nothing Nothing
        (do fileCloseAllButPackage; return ()) [] False
    ,AD "Quit" "_Quit" Nothing (Just "gtk-quit")
        quit [] False

    ,AD "Edit" "_Edit" Nothing Nothing (return ()) [] False
    ,AD "EditUndo" "_Undo" Nothing (Just "gtk-undo")
        editUndo [] False
    ,AD "EditRedo" "_Redo" Nothing (Just "gtk-redo")
        editRedo [] False
    ,AD "EditCut" "Cu_t" Nothing Nothing{--Just "gtk-cut"--}
        editCut [] {--Just "<control>X"--} False
    ,AD "EditCopy" "_Copy"  Nothing  Nothing{--Just "gtk-copy"--}
        editCopy [] {--Just "<control>C"--} False
    ,AD "EditPaste" "_Paste" Nothing Nothing{--Just "gtk-paste"--}
        editPaste [] {--Just "<control>V"--} False
    ,AD "EditDelete" "_Delete" Nothing (Just "gtk-delete")
        editDelete [] False
    ,AD "EditSelectAll" "Select_All" Nothing (Just "gtk-select-all")
        editSelectAll [] False
    ,AD "EditFind" "Find" Nothing (Just "gtk-find")
        (editFindInc Initial) [] False
    ,AD "EditFindNext" "Find _Next" Nothing (Just "gtk-find-next")
        (editFindInc Forward) [] False
    ,AD "EditFindPrevious" "Find _Previous" Nothing (Just "gtk-find-previous")
        (editFindInc Backward) [] False
    ,AD "EditGotoLine" "_Goto Line" Nothing (Just "gtk-jump")
        editGotoLine [] False

    ,AD "EditComment" "_Comment" Nothing Nothing
        editComment [] False
    ,AD "EditUncomment" "_Uncomment" Nothing Nothing
        editUncomment [] False
    ,AD "EditShiftRight" "Shift _Right" Nothing Nothing
        editShiftRight [] False
    ,AD "EditShiftLeft" "Shift _Left" Nothing Nothing
        editShiftLeft [] False

    --,AD "Align" "_Align" Nothing Nothing (return ()) [] False
    ,AD "EditAlignEqual" "Align _=" Nothing Nothing
        (align '=') [] False
    ,AD "EditAlignRightArrow" "Align -_>" Nothing Nothing
        (align '>') [] False
    ,AD "EditAlignLeftArrow" "Align _<-" Nothing Nothing
        (align '<') [] False
    ,AD "EditAlignTypeSig" "Align _::" Nothing Nothing
        (align ':') [] False

    ,AD "EditCandy" "_To Candy" Nothing Nothing
        editCandy [] True

    ,AD "Package" "_Package" Nothing Nothing (return ()) [] False
    ,AD "NewPackage" "_New Package" Nothing Nothing
        packageNew [] False
    ,AD "OpenPackage" "_Open Package" Nothing Nothing
        packageOpen [] False
    ,AD "EditPackage" "_Edit Package" Nothing Nothing
        packageEdit [] False
    ,AD "ClosePackage" "_Close Package" Nothing Nothing
        deactivatePackage [] False

    ,AD "PackageFlags" "Edit Flags" (Just "Edit the package flags") Nothing
        (do getFlags; return ()) [] False
    ,AD "ConfigPackage" "_Configure Package" (Just "Configures the package") (Just "ide_configure")
        packageConfig [] False
    ,AD "BuildPackage" "_Build Package" (Just "Builds the package") (Just "ide_make")
        packageBuild [] False
    ,AD "DocPackage" "_Build Documentation" (Just "Builds the documentation") Nothing
        packageDoc [] False
    ,AD "CleanPackage" "Cl_ean Package" (Just "Cleans the package") Nothing
        packageClean [] False
    ,AD "CopyPackage" "_Copy Package" (Just "Copies the package") Nothing
        packageCopy [] False
    ,AD "RunPackage" "_Run" (Just "Runs the package") (Just "ide_run")
        packageRun [] False
    ,AD "NextError" "_Next Error" (Just "Go to the next error") (Just "ide_error_next")
        nextError [] False
    ,AD "PreviousError" "_Previous Error" (Just "Go to the previous error") (Just "ide_error_prev")
        previousError [] False

    ,AD "InstallPackage" "_Install Package" Nothing Nothing
        packageInstall [] False
    ,AD "RegisterPackage" "_Register Package" Nothing Nothing
        packageRegister [] False
    ,AD "UnregisterPackage" "_Unregister" Nothing Nothing
        packageUnregister [] False
    ,AD "TestPackage" "Test Package" Nothing Nothing
        packageTest [] False
    ,AD "SdistPackage" "Source Dist" Nothing Nothing
        packageSdist [] False
    ,AD "OpenDocPackage" "_Open Doc" Nothing Nothing
        packageOpenDoc [] False

    ,AD "Metadata" "_Metadata" Nothing Nothing (return ()) [] False
    ,AD "UpdateMetadataCurrent" "_Update Project" Nothing Nothing
        rebuildActiveInfo [] False
    ,AD "UpdateMetadataLib" "_Update Lib" Nothing Nothing
        rebuildLibInfo [] False
    ,AD "ShowModules" "Show Modules" Nothing Nothing
        showModules [] False
    ,AD "ShowCallers" "Show Callers" Nothing Nothing
        showCallers [] False
    ,AD "ShowClasses" "Show Classes" Nothing Nothing
        showClasses [] False
    ,AD "ShowSearch" "Show Search" Nothing Nothing
        showSearch [] False
    ,AD "ShowInfo" "Show Info" Nothing Nothing
        showInfo [] False

    ,AD "Session" "_Session" Nothing Nothing (return ()) [] False
    ,AD "SaveSession" "_Save Session" Nothing Nothing
        saveSessionAsPrompt [] False
    ,AD "LoadSession" "_Load Session" Nothing Nothing
        loadSessionPrompt [] False
    ,AD "ForgetSession" "_Forget Session" Nothing Nothing
        (return ()) [] True

    ,AD "View" "_View" Nothing Nothing (return ()) [] False
    ,AD "ViewMoveLeft" "Move _Left" Nothing Nothing
        (viewMove LeftP) [] False
    ,AD "ViewMoveRight" "Move _Right" Nothing Nothing
        (viewMove RightP) [] False
    ,AD "ViewMoveUp" "Move _Up" Nothing Nothing
        (viewMove TopP) [] False
    ,AD "ViewMoveDown" "Move _Down" Nothing Nothing
        (viewMove BottomP) [] False
    ,AD "ViewSplitHorizontal" "Split H_orizontal" Nothing Nothing
        viewSplitHorizontal [] False
    ,AD "ViewSplitVertical" "Split _Vertical" Nothing Nothing
        viewSplitVertical [] False
    ,AD "ViewCollapse" "_Collapse" Nothing Nothing
        viewCollapse [] False

    ,AD "ViewTabsLeft" "Tabs Left" Nothing Nothing
        (viewTabsPos PosLeft) [] False
    ,AD "ViewTabsRight" "Tabs Right" Nothing Nothing
        (viewTabsPos PosRight) [] False
    ,AD "ViewTabsUp" "Tabs Up" Nothing Nothing
        (viewTabsPos PosTop) [] False
    ,AD "ViewTabsDown" "Tabs Down" Nothing Nothing
        (viewTabsPos PosBottom) [] False
    ,AD "ViewSwitchTabs" "Tabs On/Off" Nothing Nothing
        viewSwitchTabs [] False

    ,AD "ViewClosePane" "Close pane" Nothing (Just "gtk-close")
        sessionClosePane [] False

    ,AD "ViewHistoryBack" "Back" Nothing (Just "gtk-go-back")
        historyBack [] False
    ,AD "ViewHistoryForth" "Forward" Nothing (Just "gtk-go-forward")
        historyForward [] False


    ,AD "ClearLog" "_Clear Log" Nothing Nothing
        clearLog [] False
    ,AD "ToggleToolbar" "Toggle Toolbar" Nothing Nothing
        toggleToolbar [] False

    ,AD "Help" "_Help" Nothing Nothing (return ()) [] False
    ,AD "PrefsEdit" "_Edit Prefs" Nothing Nothing
        editPrefs [] False
    ,AD "HelpDebug" "Debug" Nothing Nothing (do
            pack <- readIDE activePack
            ideMessage Normal (show pack)) [] False
--    ,AD "HelpDebug2" "Debug2" (Just "<Ctrl>d") Nothing dbgInstalledPackageInfo [] False
    ,AD "HelpAbout" "About" Nothing (Just "gtk-about") aboutDialog [] False]

--
-- | The menu description in XML Syntax as defined by GTK
--
menuDescription :: IO String
menuDescription = do
    prefsPath   <-  getConfigFilePathForLoad "Default.menu"
    res       <-  trace ("read from path : " ++ prefsPath) $ readFile prefsPath
    return res

--
-- | Building the Menu
--
makeMenu :: UIManager -> [ActionDescr IDERef] -> String -> IDEM (AccelGroup, [Widget])
makeMenu uiManager actions menuDescription = reifyIDE (\ideR session -> do
    actionGroupGlobal <- actionGroupNew "global"
    mapM_ (actm ideR session actionGroupGlobal) actions
    uiManagerInsertActionGroup uiManager actionGroupGlobal 1
    uiManagerAddUiFromString uiManager menuDescription
    accGroup <- uiManagerGetAccelGroup uiManager
    mbWidgets <- mapM (uiManagerGetWidget uiManager) ["ui/menubar","ui/toolbar"]
    let widgets = map (\mb -> case mb of
					Just it -> it
					Nothing -> throwIDE "Menu>>makeMenu: failed to build menu") mbWidgets
    return (accGroup,widgets))
    where
        actm ideR session ag (AD name label tooltip stockId ideAction accs isToggle) = do
            let (acc,accString) = if null accs
                                    then (Just "","=" ++ name)
                                    else (Just (head accs),(head accs) ++ "=" ++ name)
            if isToggle
                then do
                    act <- toggleActionNew name label tooltip stockId
                    on act actionToggled (doAction ideAction ideR session accString)
                    actionGroupAddActionWithAccel ag act acc
                else do
                    act <- actionNew name label tooltip stockId
                    onActionActivate act (doAction ideAction ideR session accString)
                    actionGroupAddActionWithAccel ag act acc
        doAction ideAction ideR session accStr =
            handleTopExceptions (reflectIDE (do
                ideAction
                sb <- getSBSpecialKeys
                liftIO $statusbarPop sb 1
                liftIO $statusbarPush sb 1 $accStr
                return ()) ideR session)

-- | Quit ide
--  ### make reasonable
--
quit :: IDEAction
quit = do
    saveSession :: IDEAction
    modifyIDE_ (\ide -> return (ide{isShuttingDown = True}))
    b <- fileCloseAll
    if b
        then liftIO mainQuit
        else modifyIDE_ (\ide -> return (ide{isShuttingDown = False}))

--
-- | Show the about dialog
--
aboutDialog :: IDEAction
aboutDialog = liftIO $ do
    d <- aboutDialogNew
    aboutDialogSetName d "Leksah"
    aboutDialogSetVersion d (showVersion version)
    aboutDialogSetCopyright d "Copyright 2007-2009 Jürgen Nicklisch-Franken"
    aboutDialogSetComments d $ "An integrated development environement (IDE) for the " ++
                               "programming language Haskell and the Glasgow Haskell Compiler"
    dd <- getDataDir
    license <- catch (readFile $ dd </> "LICENSE") (\ (_ :: SomeException) -> return "")
    aboutDialogSetLicense d $ Just license
    aboutDialogSetWebsite d "http://leksah.org/"
    aboutDialogSetAuthors d ["Jürgen Nicklisch-Franken (Jutaro)"]
    dialogRun d
    widgetDestroy d
    return ()

buildStatusbar ideR = do
    sb <- statusbarNew
    statusbarSetHasResizeGrip sb False

    sblk <- statusbarNew
    widgetSetName sblk "statusBarSpecialKeys"
    statusbarSetHasResizeGrip sblk False
    widgetSetSizeRequest sblk 150 (-1)

    sbap <- statusbarNew
    widgetSetName sbap "statusBarActivePane"
    statusbarSetHasResizeGrip sbap False
    widgetSetSizeRequest sbap 150 (-1)

    sbapr <- statusbarNew
    widgetSetName sbapr "statusBarActiveProject"
    statusbarSetHasResizeGrip sbapr False
    widgetSetSizeRequest sbapr 150 (-1)

    sbe <- statusbarNew
    widgetSetName sbe "statusBarErrors"
    statusbarSetHasResizeGrip sbe False
    widgetSetSizeRequest sbe 150 (-1)

    sblc <- statusbarNew
    widgetSetName sblc "statusBarLineColumn"
    statusbarSetHasResizeGrip sblc True
    widgetSetSizeRequest sblc 150 (-1)

    sbio <- statusbarNew
    widgetSetName sbio "statusBarInsertOverwrite"
    statusbarSetHasResizeGrip sbio False
    widgetSetSizeRequest sbio 60 (-1)

    dummy <- hBoxNew False 1
    widgetSetName dummy "dummyBox"


    hb <- hBoxNew False 1
    widgetSetName hb "statusBox"
    boxPackStart hb sblk PackGrow 0
    boxPackStart hb sbap PackGrow 0
    boxPackStart hb sbapr PackGrow 0
    --boxPackStart hb dummy PackGrow 0
    boxPackEnd hb sblc PackNatural 0
    boxPackEnd hb sbio PackNatural 0
    boxPackEnd hb sbe PackNatural 0

    return hb

newIcons :: IO ()
newIcons =
    catch (do
        iconFactory <- iconFactoryNew
        dataDir <- getDataDir
        mapM_ (loadIcon dataDir iconFactory) ["ide_class","ide_configure","ide_data","ide_error_next",
            "ide_error_prev","ide_field","ide_function","ide_instance", "ide_konstructor","ide_make",
            "ide_method","ide_newtype","ide_other","ide_rule","ide_run","ide_slot",
            "ide_source","ide_type","leksah", "ide_reexported"
            ]
        iconFactoryAddDefault iconFactory)
    (\(e :: SomeException) -> getDataDir >>= \dataDir -> throwIDE ("Can't load icons from " ++ dataDir))
    where
    loadIcon dataDir iconFactory name = do
        pb      <-  pixbufNewFromFile $ dataDir </> "data" </> (name ++ ".png")
        icon    <-  iconSetNewFromPixbuf pb
        iconFactoryAdd iconFactory name icon

setSensitivity :: [(SensitivityMask, Bool)] -> IDEAction
setSensitivity l = mapM_ setSensitivitySingle l
    where   setSensitivitySingle (sens,bool) = do
                actions <- getActionsFor sens
                liftIO $ mapM_ (\a -> actionSetSensitive a bool) actions

getActionsFor :: SensitivityMask -> IDEM [Action]
getActionsFor SensitivityForwardHist = getActionsFor' ["ViewHistoryForth"]
getActionsFor SensitivityBackwardHist = getActionsFor' ["ViewHistoryBack"]
getActionsFor SensitivityProjectActive = getActionsFor'
    ["EditPackage", "ClosePackage", "PackageFlags", "ConfigPackage", "BuildPackage"
    ,"DocPackage", "CleanPackage", "CopyPackage", "RunPackage","InstallPackage"
    ,"RegisterPackage", "UnregisterPackage","TestPackage","SdistPackage"
    ,"OpenDocPackage","FileCloseAll"]
getActionsFor SensitivityError = getActionsFor' ["NextError", "PreviousError"]
getActionsFor SensitivityEditor = getActionsFor' ["EditUndo", "EditRedo", "EditGotoLine"
    ,"EditComment", "EditUncomment", "EditShiftLeft", "EditShiftRight"]


getActionsFor' :: [String] -> IDEM[Action]
getActionsFor' l = do
    r <- mapM getActionFor l
    return (catMaybes r)
    where
        getActionFor string = do
            uiManager' <- readIDE uiManager
            actionGroups <- liftIO $ uiManagerGetActionGroups uiManager'
            res <- liftIO $ actionGroupGetAction (head actionGroups) string
            when (isNothing res) $ ideMessage Normal $ "Can't find UI Action " ++ string
            return res