hpage-0.6.0: src/HPage/GUI/FreeTextWindow.hs
{-# LANGUAGE GeneralizedNewtypeDeriving,
MultiParamTypeClasses,
FlexibleInstances,
FlexibleContexts,
FunctionalDependencies,
UndecidableInstances #-}
module HPage.GUI.FreeTextWindow ( gui ) where
import Prelude hiding (catch)
import Control.Exception
import Control.Concurrent.Process
import Control.Concurrent.MVar
import System.FilePath
import System.Directory
import System.IO.Error hiding (try, catch)
import Data.List
import Data.Bits
import Data.Char (toLower)
import Data.Version
import Distribution.Package
import Control.Monad.Error
import Control.Monad.Loops
import Graphics.UI.WX
import Graphics.UI.WXCore hiding (kill, Process)
import qualified HPage.Control as HP
import qualified HPage.Server as HPS
import HPage.GUI.Dialogs
import HPage.GUI.IDs
import HPage.GUI.Constants
import HPage.Utils.Log
import Paths_hpage -- cabal locations of data files
imageFile :: FilePath -> IO FilePath
imageFile fp = do
path <- getDataFileName $ "res/images/" ++ fp
real <- doesFileExist path
if real then return path
else do
errorIO ("file not found", path)
fail (path ++ " does not exist")
helpFile :: IO FilePath
helpFile = getDataFileName "res/help/helpPage.hs"
data GUIBottom = GUIBtm { bottomDesc :: String,
bottomSource :: String }
data GUIResults = GUIRes { resButton :: Button (),
resLabel :: StaticText (),
resValue :: TextCtrl (),
res4Dots :: StaticText (),
resType :: TextCtrl (),
resErrors :: Var [GUIBottom] }
data GUIContext = GUICtx { guiWin :: Frame (),
guiPages :: SingleListBox (),
guiModules :: (Var Int, ListCtrl ()),
guiCode :: TextCtrl (),
guiResults :: GUIResults,
guiStatus :: StatusField,
guiTimer :: TimerEx (),
guiCharTimer :: TimerEx (),
guiSearch :: FindReplaceData (),
guiChrVar :: MVar (Maybe String),
guiChrFiller :: MVar (Handle String),
guiValFiller :: MVar (Handle (String, IO ()))}
gui :: IO ()
gui =
do
-- Server context
model <- HPS.start
win <- frame [text := "\955Page",
visible := False]
imageFile "icon/hpage.tif" >>= topLevelWindowSetIconFromFile win
set win [on closing := HPS.stop model >> propagateEvent]
-- Containers
ntbkL <- notebook win []
pnlPs <- panel ntbkL []
pnlMs <- panel ntbkL []
-- Text page...
-- txtCode <- styledTextCtrl win []
txtCode <- textCtrl win [font := fontFixed, text := ""]
-- Document Selector
lstPages <- singleListBox pnlPs [style := wxLB_NEEDED_SB, outerSize := sz 400 600]
-- Modules Lists
imageFiles <- mapM imageFile ["m_imported.ico", "m_interpreted.ico", "m_compiled.ico", "m_package.ico"]
imagePaths <- mapM getAbsoluteFilePath imageFiles
images <- imageListFromFiles (sz 16 16) imagePaths
varModsSel <- varCreate $ -1
lstModules <- listCtrlEx pnlMs (wxLC_REPORT + wxLC_ALIGN_LEFT + wxLC_NO_HEADER + wxLC_SINGLE_SEL)
[columns := [("Module", AlignLeft, 200),
("Origin", AlignLeft, 1)]]
listCtrlSetImageList lstModules images wxIMAGE_LIST_SMALL
-- Results panel
pnlRes <- panel win []
txtValue <- textEntry pnlRes [style := wxTE_READONLY]
varErrors <- varCreate []
txtType <- textEntry pnlRes [style := wxTE_READONLY]
btnInterpret <- button pnlRes [text := "Interpret"]
lblInterpret <- staticText pnlRes [text := "Value:"]
lbl4Dots <- staticText pnlRes [text := " :: "]
set pnlRes [layout := fill $
row 5 [widget btnInterpret,
centre $ widget lblInterpret,
fill $ widget txtValue,
centre $ widget lbl4Dots,
fill $ widget txtType]]
-- Status bar...
status <- statusField [text := "hello... this is \955Page! type in your instructions :)"]
set win [statusBar := [status]]
-- Timers ...
refreshTimer <- timer win []
charTimer <- timer win []
-- Search ...
search <- findReplaceDataCreate wxFR_DOWN
chv <- newEmptyMVar
chfv <- newEmptyMVar
vfv <- newEmptyMVar
let guiRes = GUIRes btnInterpret lblInterpret txtValue lbl4Dots txtType varErrors
let guiCtx = GUICtx win lstPages (varModsSel, lstModules) txtCode guiRes status refreshTimer charTimer search chv chfv vfv
let onCmd name acc = traceIO ("onCmd", name) >> acc model guiCtx
-- Helper processes
chf <- spawn $ charFiller guiCtx
putMVar chfv chf
vf <- spawn $ valueFiller guiCtx
putMVar vfv vf
-- Events
timerOnCommand refreshTimer $ refreshExpr model guiCtx
timerOnCommand charTimer $ do
wasEmpty <- tryPutMVar chv Nothing
if wasEmpty
then do
newchf <- spawn $ charFiller guiCtx
swapMVar chfv newchf >>= kill
else return ()
set btnInterpret [on command := onCmd "interpret" interpret]
set lstPages [on select := onCmd "pageChange" pageChange]
set txtCode [on keyboard := onCmd "key" . keyEvent,
on mouse := \e -> case e of
MouseLeftUp _ _ -> onCmd "mouseEvent" restartTimer >> propagateEvent
MouseLeftDClick _ _ -> onCmd "mouseEvent" restartTimer >> propagateEvent
MouseRightDown _ _ -> onCmd "textContextMenu" textContextMenu
_ -> propagateEvent]
set txtValue [on mouse := \e -> case e of
MouseRightDown _ _ -> onCmd "valueContextMenu" valueContextMenu
_ -> propagateEvent]
set txtType [on mouse := \e -> case e of
MouseRightDown _ _ -> onCmd "typeContextMenu" typeContextMenu
_ -> propagateEvent]
set lstModules [on listEvent := \e -> case e of
ListItemSelected idx -> varSet varModsSel idx
ListItemRightClick idx -> varSet varModsSel idx >> onCmd "moduleContextMenu" moduleContextMenu
_ -> propagateEvent]
-- Menu bar...
mnuPage <- menuPane [text := "Page"]
menuAppend mnuPage wxId_NEW "&New\tCtrl-n" "New Page" False
menuAppend mnuPage wxId_CLOSE "&Close\tCtrl-w" "Close Page" False
menuAppend mnuPage wxId_CLOSE_ALL "&Close All\tCtrl-Shift-w" "Close All Pages" False
menuAppendSeparator mnuPage
menuAppend mnuPage wxId_OPEN "&Open...\tCtrl-o" "Open Page" False
menuAppend mnuPage wxId_SAVE "&Save\tCtrl-s" "Save Page" False
menuAppend mnuPage wxId_SAVEAS "&Save as...\tCtrl-Shift-s" "Save Page as" False
menuAppendSeparator mnuPage
menuQuit mnuPage [on command := wxcAppExit]
mnuEdit <- menuPane [text := "Edit"]
menuAppend mnuEdit wxId_UNDO "&Undo\tCtrl-z" "Undo" False
menuAppend mnuEdit wxId_REDO "&Redo\tCtrl-Shift-z" "Redo" False
menuAppendSeparator mnuEdit
menuAppend mnuEdit wxId_CUT "C&ut\tCtrl-x" "Cut" False
menuAppend mnuEdit wxId_COPY "&Copy\tCtrl-c" "Copy" False
menuAppend mnuEdit wxId_PASTE "&Paste\tCtrl-v" "Paste" False
menuAppendSeparator mnuEdit
menuAppend mnuEdit wxId_FIND "&Find...\tCtrl-f" "Find" False
menuAppend mnuEdit wxId_FORWARD "Find &Next\tCtrl-g" "Find Next" False
menuAppend mnuEdit wxId_BACKWARD "Find &Previous\tCtrl-Shift-g" "Find Previous" False
menuAppend mnuEdit wxId_REPLACE "&Replace...\tCtrl-Shift-r" "Replace" False
menuAppendSeparator mnuEdit
menuAppend mnuEdit wxId_PREFERENCES "&Preferences...\tCtrl-," "Preferences" False
mnuHask <- menuPane [text := "Haskell"]
menuAppend mnuHask wxId_HASK_LOAD_PKG "Load &package...\tCtrl-Alt-l" "Load Cabal Package" False
menuAppendSeparator mnuHask
menuAppend mnuHask wxId_HASK_LOAD "&Load modules...\tCtrl-l" "Load Modules" False
menuAppend mnuHask wxId_HASK_LOADNAME "Load modules by &name...\tCtrl-Shift-l" "Load Modules by Name" False
menuAppend mnuHask wxId_HASK_ADD "Import modules...\tCtrl-Shift-i" "Import Packaged Modules by Name" False
menuAppend mnuHask wxId_HASK_RELOAD "&Reload\tCtrl-r" "Reload Modules" False
menuAppendSeparator mnuHask
menuAppend mnuHask wxId_HASK_INTERPRET "&Interpret\tCtrl-i" "Interpret the Current Expression" False
menuAppend mnuHask wxId_HASK_NAVIGATE "Search on Ha&yoo!\tCtrl-y" "Search the Current Selection on Hayoo!" False
mnuHelp <- menuHelp []
menuAppend mnuHelp wxId_HELP "&Help page\tCtrl-h" "Open the Help Page" False
menuAbout mnuHelp [on command := infoDialog win "About \955Page" "Author: Fernando Brujo Benavides\nWebsite: http://haskell.hpage.com"]
set win [menuBar := [mnuPage, mnuEdit, mnuHask, mnuHelp]]
evtHandlerOnMenuCommand win wxId_NEW $ onCmd "runHP' addPage" $ runHP' HP.addPage
evtHandlerOnMenuCommand win wxId_CLOSE $ onCmd "runHP' closePage" $ runHP' HP.closePage
evtHandlerOnMenuCommand win wxId_CLOSE_ALL $ onCmd "runHP' closeAllPages" $ runHP' HP.closeAllPages
evtHandlerOnMenuCommand win wxId_OPEN $ onCmd "openPage" openPage
evtHandlerOnMenuCommand win wxId_SAVE $ onCmd "savePage" savePage
evtHandlerOnMenuCommand win wxId_SAVEAS $ onCmd "savePageAs" savePageAs
evtHandlerOnMenuCommand win wxId_UNDO $ onCmd "runHP' undo" $ runHP' HP.undo
evtHandlerOnMenuCommand win wxId_REDO $ onCmd "runHP' redo" $ runHP' HP.redo
evtHandlerOnMenuCommand win wxId_CUT $ onCmd "cut" cut
evtHandlerOnMenuCommand win wxId_COPY $ onCmd "copy" copy
evtHandlerOnMenuCommand win wxId_PASTE $ onCmd "paste" paste
evtHandlerOnMenuCommand win wxId_FIND $ onCmd "justFind" justFind
evtHandlerOnMenuCommand win wxId_FORWARD $ onCmd "findNext" justFindNext
evtHandlerOnMenuCommand win wxId_BACKWARD $ onCmd "findPrev" justFindPrev
evtHandlerOnMenuCommand win wxId_REPLACE $ onCmd "findReplace" findReplace
evtHandlerOnMenuCommand win wxId_HASK_LOAD_PKG $ onCmd "loadPackage" loadPackage
evtHandlerOnMenuCommand win wxId_HASK_LOAD $ onCmd "loadModules" loadModules
evtHandlerOnMenuCommand win wxId_HASK_ADD $ onCmd "importModules" importModules
evtHandlerOnMenuCommand win wxId_HASK_LOADNAME $ onCmd "loadModulesByName" loadModulesByName
evtHandlerOnMenuCommand win wxId_HASK_LOAD_FAST $ onCmd "loadModulesByNameFast" loadModulesByNameFast
evtHandlerOnMenuCommand win wxId_HASK_RELOAD $ onCmd "reloadModules" reloadModules
evtHandlerOnMenuCommand win wxId_PREFERENCES $ onCmd "preferences" configure
evtHandlerOnMenuCommand win wxId_HASK_INTERPRET $ onCmd "interpret" interpret
evtHandlerOnMenuCommand win wxId_HASK_NAVIGATE $ onCmd "hayoo" hayoo
evtHandlerOnMenuCommand win wxId_HASK_COPY $ onCmd "copyResult" copyResult
evtHandlerOnMenuCommand win wxId_HASK_COPY_TYPE $ onCmd "copyType" copyType
evtHandlerOnMenuCommand win wxId_HASK_EXPLAIN $ onCmd "explain" explain
evtHandlerOnMenuCommand win wxId_HELP $ onCmd "help" openHelpPage
-- Tool bar...
tbMain <- toolBarEx win True True []
mitLoadPkg <- menuFindItem mnuHask wxId_HASK_LOAD_PKG
mitNew <- menuFindItem mnuPage wxId_NEW
mitOpen <- menuFindItem mnuPage wxId_OPEN
mitSave <- menuFindItem mnuPage wxId_SAVE
mitCut <- menuFindItem mnuEdit wxId_CUT
mitCopy <- menuFindItem mnuEdit wxId_COPY
mitPaste <- menuFindItem mnuEdit wxId_PASTE
mitReload <- menuFindItem mnuHask wxId_HASK_RELOAD
loadPath <- imageFile "load.png"
newPath <- imageFile "new.png"
openPath <- imageFile "open.png"
savePath <- imageFile "save.png"
cutPath <- imageFile "cut.png"
copyPath <- imageFile "copy.png"
pastePath <- imageFile "paste.png"
reloadPath <- imageFile "reload.png"
toolMenu tbMain mitLoadPkg "Load Package" loadPath [tooltip := "Load Cabal Package"]
toolBarAddSeparator tbMain
toolMenu tbMain mitNew "New" newPath [tooltip := "New Page"]
toolMenu tbMain mitOpen "Open" openPath [tooltip := "Open Page"]
toolMenu tbMain mitSave "Save" savePath [tooltip := "Save Page"]
toolBarAddSeparator tbMain
toolMenu tbMain mitCut "Cut" cutPath [tooltip := "Cut"]
toolMenu tbMain mitCopy "Copy" copyPath [tooltip := "Copy"]
toolMenu tbMain mitPaste "Paste" pastePath [tooltip := "Paste"]
toolBarAddSeparator tbMain
toolMenu tbMain mitReload "Reload" reloadPath [tooltip := "Reload Modules"]
toolBarSetToolBitmapSize tbMain $ sz 32 32
-- Layout settings
let pagesTabL = tab "Pages" $ container pnlPs $ fill $ margin 5 $ widget lstPages
modsTabL = tab "Modules" $ container pnlMs $ fill $ margin 5 $ widget lstModules
leftL = tabs ntbkL [modsTabL, pagesTabL]
resultsL = hfill $ boxed "Expression" $ fill $ widget pnlRes
rightL = minsize (sz 485 100) $ fill $ widget txtCode
set win [layout := column 5 [fill $ row 10 [leftL, rightL], resultsL],
clientSize := sz 800 600]
-- test the server...
runTxtHPSelection "1" model HP.interpret
-- ...and RUN!
refreshPage model guiCtx
onCmd "start" openHelpPage
set win [visible := True]
set txtCode [font := fontFixed] -- again just to be sure
focusOn txtCode
-- PROCESSES -------------------------------------------------------------------
charFiller :: GUIContext -> Process String ()
charFiller GUICtx{guiResults = GUIRes{resValue = txtValue,
resErrors= varErrors},
guiChrVar = chv} =
forever $ do
t <- recv
liftIO $ do
txt <- catch (eval t) $ \(ErrorCall desc) ->
varUpdate varErrors (++ [GUIBtm desc t]) >>
return bottomChar
tryPutMVar chv $ Just txt
where eval t = t `seq` length t `seq` return t
valueFiller :: GUIContext -> Process (String, IO ()) ()
valueFiller guiCtx@GUICtx{guiResults = GUIRes{resButton = btnInterpret,
resErrors = varErrors,
resValue = txtValue}} =
forever $ do
liftDebugIO "Waiting for a new value to interpret"
(val, poc) <- recv
liftDebugIO "Value received in valueFiller"
liftDebugIO "Trying to evaluate the whole value first..."
liftIO $ do
set txtValue [text := ""]
res <- valueFill guiCtx val
if res == bottomChar
then do
debugIO "didn't work... going char by char..."
varSet varErrors []
valueFiller' guiCtx val
else do
debugIO "It worked!!"
textCtrlAppendText txtValue res
set btnInterpret [on command := poc,
text := "Interpret"]
set txtValue [enabled := True,
bgcolor := white]
valueFiller' :: GUIContext -> String -> IO ()
valueFiller' guiCtx@GUICtx{guiResults = GUIRes{resValue = txtValue,
resErrors = varErrors}} val =
do
h <- try (case val of
[] -> return []
(c:_) -> return [c])
case h of
Left (ErrorCall desc) ->
do
varUpdate varErrors (++ [GUIBtm desc val])
textCtrlAppendText txtValue bottomString
Right [] ->
return ()
Right t ->
do
valueFill guiCtx t >>= textCtrlAppendText txtValue
valueFiller' guiCtx $ tail val
valueFill :: GUIContext -> String -> IO String
valueFill GUICtx{guiResults = GUIRes{resErrors = varErrors},
guiCharTimer = charTimer,
guiChrVar = chv,
guiChrFiller = chfv} val =
do
debugIO "valueFill starting..."
tryTakeMVar chv --NOTE: empty the var
debugIO "timer starting..."
timerStart charTimer charTimeout True
debugIO "sending msg to charFiller..."
readMVar chfv >>= flip sendTo val
debugIO "waiting for value toAdd..."
toAdd <- readMVar chv --NOTE: Not using "take" to be sure that noone touches it
debugIO ("Ready to add...", toAdd)
case toAdd of
Just txt ->
do
isR <- timerIsRuning charTimer
if isR then timerStop charTimer else return ()
debugIO $ "returning " ++ txt
return txt
Nothing -> --NOTE: Means "Timed Out"
do
varUpdate varErrors (++ [GUIBtm "Timed Out" val])
debugIO $ "timed out"
return bottomChar
-- EVENT HANDLERS --------------------------------------------------------------
keyEvent :: EventKey -> HPS.ServerHandle -> GUIContext -> IO ()
keyEvent eventKey model guiCtx@GUICtx{guiCode = txtCode} =
do
case keyKey eventKey of
KeyTab ->
if isNoneDown (keyModifiers eventKey)
then
textCtrlWriteText txtCode "\t" >> restartTimer model guiCtx
else
return ()
_ ->
restartTimer model guiCtx
propagateEvent
refreshPage, savePageAs, savePage, openPage,
pageChange, copy, copyResult, copyType, cut, paste,
justFind, justFindNext, justFindPrev, findReplace,
textContextMenu, moduleContextMenu, valueContextMenu,
restartTimer, interpret, hayoo, explain,
loadPackage, loadModules, importModules, loadModulesByName, loadModulesByNameFast, reloadModules,
configure, openHelpPage :: HPS.ServerHandle -> GUIContext -> IO ()
moduleContextMenu model guiCtx@GUICtx{guiWin = win, guiModules = (varModsSel, lstModules)} =
do
pointWithinWindow <- windowGetMousePosition win
i <- varGet varModsSel
contextMenu <- menuPane []
case i of
(-1) ->
do
return ()
i ->
do
itm <- get lstModules $ item i
case itm of
[_, "Package"] ->
menuAppend contextMenu wxId_HASK_LOAD_FAST "&Load" "Load Module" False
[modname, _] ->
appendBrowseMenu contextMenu modname
other ->
menuAppend contextMenu idAny (show other) "Other" False
propagateEvent
menuPopup contextMenu pointWithinWindow win
objectDelete contextMenu
where appendBrowseMenu contextMenu mn =
do
browseMenu <- menuPane []
hpsRes <- tryIn model $ HP.getModuleExports mn
case hpsRes of
Left err ->
menuAppend browseMenu idAny err "Error" False
Right mes ->
flip mapM_ mes $ createMenuItem browseMenu
menuItem contextMenu [text := "To Clipboard",
on command := addToClipboard mn]
menuItem contextMenu [text := "Search on Hayoo!",
on command := hayooDialog win mn]
menuAppendSeparator contextMenu
menuAppendSub contextMenu wxId_HASK_BROWSE "&Browse" browseMenu ""
addToClipboard txt =
do
tdo <- textDataObjectCreate txt
cb <- clipboardCreate
opened <- clipboardOpen cb
if opened
then do
r <- clipboardSetData cb tdo
if r
then return ()
else errorDialog win "Error" "Clipboard operation failed"
clipboardClose cb
else
errorDialog win "Error" "Clipboard not ready"
createMenuItem m fn@HP.MEFun{HP.funName = fname} =
do
itemMenu <- createBasicMenuItem fname
menuAppendSub m wxId_HASK_MENUELEM (show fn) itemMenu ""
createMenuItem m HP.MEClass{HP.clsName = cn, HP.clsFuns = []} =
do
itemMenu <- createBasicMenuItem cn
menuAppendSub m wxId_HASK_MENUELEM ("class " ++ cn) itemMenu ""
createMenuItem m HP.MEClass{HP.clsName = cn, HP.clsFuns = cfs} =
do
subMenu <- createBasicMenuItem cn
menuAppendSeparator subMenu
flip mapM_ cfs $ createMenuItem subMenu
menuAppendSub m wxId_HASK_MENUELEM ("class " ++ cn) subMenu ""
createMenuItem m HP.MEData{HP.datName = dn, HP.datCtors = []} =
do
itemMenu <- createBasicMenuItem dn
menuAppendSub m wxId_HASK_MENUELEM ("data " ++ dn) itemMenu ""
createMenuItem m HP.MEData{HP.datName = dn, HP.datCtors = dcs} =
do
subMenu <- createBasicMenuItem dn
menuAppendSeparator subMenu
flip mapM_ dcs $ createMenuItem subMenu
menuAppendSub m wxId_HASK_MENUELEM ("data " ++ dn) subMenu ""
createBasicMenuItem name =
do
itemMenu <- menuPane []
menuItem itemMenu [text := "To Clipboard",
on command := addToClipboard name]
menuItem itemMenu [text := "Search on Hayoo!",
on command := hayooDialog win name]
return itemMenu
textContextMenu model guiCtx@GUICtx{guiWin = win, guiCode = txtCode} =
do
contextMenu <- menuPane []
sel <- textCtrlGetStringSelection txtCode
case sel of
"" ->
return ()
_ ->
do
menuAppend contextMenu wxId_CUT "C&ut\tCtrl-x" "Cut" False
menuAppend contextMenu wxId_COPY "&Copy\tCtrl-c" "Copy" False
menuAppend contextMenu wxId_PASTE "&Paste\tCtrl-v" "Paste" False
menuAppendSeparator contextMenu
menuAppend contextMenu wxId_HASK_NAVIGATE "Search on Ha&yoo!\tCtrl-y" "Search the Current Selection on Hayoo!" False
menuAppend contextMenu wxId_HASK_INTERPRET "&Interpret\tCtrl-i" "Interpret the Current Expression" False
propagateEvent
pointWithinWindow <- windowGetMousePosition win
menuPopup contextMenu pointWithinWindow win
objectDelete contextMenu
valueContextMenu model guiCtx@GUICtx{guiWin = win,
guiResults = GUIRes{resValue = txtValue}} =
do
contextMenu <- menuPane []
sel <- textCtrlGetStringSelection txtValue
case sel of
"" ->
return ()
_ ->
menuAppend contextMenu wxId_HASK_COPY "Copy" "Copy" False
if sel == bottomChar || sel == bottomString
then menuAppend contextMenu wxId_HASK_EXPLAIN "Explain" "Explain" False
else return ()
propagateEvent
pointWithinWindow <- windowGetMousePosition win
menuPopup contextMenu pointWithinWindow win
objectDelete contextMenu
typeContextMenu model guiCtx@GUICtx{guiWin = win,
guiResults = GUIRes{resType = txtType}} =
do
contextMenu <- menuPane []
sel <- textCtrlGetStringSelection txtType
case sel of
"" ->
do
propagateEvent
objectDelete contextMenu
_ ->
do
menuAppend contextMenu wxId_HASK_COPY_TYPE "Copy" "Copy" False
propagateEvent
pointWithinWindow <- windowGetMousePosition win
menuPopup contextMenu pointWithinWindow win
objectDelete contextMenu
pageChange model guiCtx@GUICtx{guiPages = lstPages} =
do
i <- get lstPages selection
case i of
(-1) -> return ()
_ -> runHP' (HP.setPageIndex i) model guiCtx
openPage model guiCtx@GUICtx{guiWin = win,
guiStatus = status} =
do
fileNames <- filesOpenDialog win True True "Open file..." [("Haskells",["*.hs"]),
("Any file",["*.*"])] "" ""
case fileNames of
[] ->
return ()
fs ->
do
set status [text := "opening..."]
flip mapM_ fs $ \f -> runHP' (HP.openPage f) model guiCtx
savePageAs model guiCtx@GUICtx{guiWin = win, guiStatus = status} =
do
refreshExpr model guiCtx
fileName <- fileSaveDialog win True True "Save file..." [("Haskells",["*.hs"]),
("Any file",["*.*"])] "" ""
case fileName of
Nothing ->
return ()
Just f ->
do
set status [text := "saving..."]
runHP' (HP.savePageAs f) model guiCtx
savePage model guiCtx@GUICtx{guiWin = win} =
do
refreshExpr model guiCtx
maybePath <- tryIn' model HP.getPagePath
case maybePath of
Left err ->
warningDialog win "Error" err
Right Nothing ->
savePageAs model guiCtx
Right _ ->
do
set (guiStatus guiCtx) [text := "saving..."]
runHP' HP.savePage model guiCtx
copy _model GUICtx{guiCode = txtCode} = textCtrlCopy txtCode
copyResult _model GUICtx{guiResults = GUIRes{resValue = txtValue}} = textCtrlCopy txtValue
copyType _model GUICtx{guiResults = GUIRes{resType = txtType}} = textCtrlCopy txtType
cut model guiCtx@GUICtx{guiCode = txtCode} = textCtrlCut txtCode >> refreshExpr model guiCtx
paste model guiCtx@GUICtx{guiCode = txtCode} = textCtrlPaste txtCode >> refreshExpr model guiCtx
justFind model guiCtx = openFindDialog model guiCtx "Find..." dialogDefaultStyle
justFindNext model guiCtx@GUICtx{guiSearch = search} =
do
curFlags <- findReplaceDataGetFlags search
findReplaceDataSetFlags search $ curFlags .|. wxFR_DOWN
findNextButton model guiCtx
justFindPrev model guiCtx@GUICtx{guiSearch = search} =
do
curFlags <- findReplaceDataGetFlags search
findReplaceDataSetFlags search $ curFlags .&. complement wxFR_DOWN
findNextButton model guiCtx
findReplace model guiCtx = openFindDialog model guiCtx "Find and Replace..." $ dialogDefaultStyle .|. wxFR_REPLACEDIALOG
reloadModules = runHP HP.reloadModules
loadPackage model guiCtx@GUICtx{guiWin = win} =
do
distExists <- doesDirectoryExist "dist"
let startDir = if distExists then "dist" else ""
res <- fileOpenDialog win True True "Select the setup-config file for your project..."
[("setup-config",["setup-config"])] startDir "setup-config"
case res of
Nothing ->
return ()
Just setupConfig ->
do
loadres <- tryIn' model $ do
lr <- HP.loadPackage setupConfig
HP.addPage
return lr
case loadres of
Left err ->
warningDialog win "Error" err
Right (Left err) ->
warningDialog win "Error" err
Right (Right pkg) ->
do
absPath <- canonicalizePath setupConfig
let dir = joinPath . reverse . drop 2 . reverse $ splitDirectories absPath
setCurrentDirectory dir
frameSetTitle win $ "\955Page - " ++ prettyShow pkg
refreshPage model guiCtx
where prettyShow PackageIdentifier{pkgName = PackageName pkgname,
pkgVersion = pkgvsn} = pkgname ++ "-" ++ showVersion pkgvsn
loadModules model guiCtx@GUICtx{guiWin = win, guiStatus = status} =
do
fileNames <- filesOpenDialog win True True "Load Module..." [("Haskell Modules",["*.hs"])] "" ""
case fileNames of
[] ->
return ()
fs ->
do
set status [text := "loading..."]
runHP (HP.loadModules fs) model guiCtx
loadModulesByName model guiCtx@GUICtx{guiWin = win, guiStatus = status} =
do
moduleNames <- textDialog win "Enter the module names, separated by spaces" "Load Modules..." ""
case moduleNames of
"" ->
return ()
mns ->
do
set status [text := "loading..."]
runHP (HP.loadModules $ words mns) model guiCtx
loadModulesByNameFast model guiCtx@GUICtx{guiWin = win, guiModules = (varModsSel, lstModules), guiStatus = status} =
do
i <- varGet varModsSel
case i of
(-1) -> return ()
i ->
do
mnText <- listCtrlGetItemText lstModules i
let mns = [mnText]
set status [text := "loading..."]
runHP (HP.loadModules mns) model guiCtx
importModules model guiCtx@GUICtx{guiWin = win, guiStatus = status} =
do
moduleNames <- textDialog win "Enter the module names, separated by spaces" "Import Packaged Modules..." ""
case moduleNames of
"" ->
return ()
mns ->
do
set status [text := "loading..."]
runHP (HP.importModules $ words mns) model guiCtx
configure model guiCtx@GUICtx{guiWin = win, guiStatus = status} =
do
hpsRes <- tryIn model $ do
les <- HP.getLanguageExtensions
sds <- HP.getSourceDirs
gos <- HP.getGhcOpts
case les of
Left e -> return $ Left e
Right l -> return $ Right (l, sds, gos)
case hpsRes of
Left err ->
warningDialog win "Error" err
Right (les, sds, gos) ->
do
res <- preferencesDialog win "Preferences" $ Prefs les sds gos
case res of
Nothing ->
return ()
Just newps ->
do
set status [text := "setting..."]
runHP (do
HP.setLanguageExtensions $ languageExtensions newps
HP.setSourceDirs $ sourceDirs newps
case ghcOptions newps of
"" -> return $ Right ()
newopts -> HP.setGhcOpts newopts
) model guiCtx
openHelpPage model guiCtx@GUICtx{guiCode = txtCode} =
do
f <- helpFile
txt <- readFile f
set txtCode [font := fontFixed,
text := txt]
-- Refresh the current expression box
refreshExpr model guiCtx
refreshPage model guiCtx@GUICtx{guiWin = win,
guiPages = lstPages,
guiModules = (varModsSel, lstModules),
guiCode = txtCode,
guiStatus = status} =
do
res <- tryIn' model $ do
pc <- HP.getPageCount
pages <- mapM HP.getPageNthDesc [0..pc-1]
ind <- HP.getPageIndex
txt <- HP.getPageText
lmsRes <- HP.getLoadedModules
ims <- HP.getImportedModules
pms <- HP.getPackageModules
let lms = case lmsRes of
Left _ -> []
Right x -> x
return (pms, ims, lms, pages, ind, txt)
case res of
Left err ->
warningDialog win "Error" err
Right (pms, ims, ms, ps, i, t) ->
do
-- Refresh the pages list
itemsDelete lstPages
(flip mapM) ps $ \pd ->
let prefix = if HP.pIsModified pd
then "*"
else ""
name = case HP.pPath pd of
Nothing -> "new page"
Just fn -> takeFileName $ dropExtension fn
in itemAppend lstPages $ prefix ++ name
set lstPages [selection := i]
-- Refresh the modules lists
--NOTE: we know 0 == "imported" / 1 == "interpreted" / 2 == "compiled" / 3 == "package" images
--TODO: move that to some kind of constants or so
let ims' = map (\m -> (0, [m, "Imported"])) ims
ms' = map (\m -> if HP.modInterpreted m
then (1, [HP.modName m, "Interpred"])
else (2, [HP.modName m, "Compiled"])) ms
pms' = map (\m -> (3, [m, "Package"])) $
flip filter pms $ \pm -> all (\xm -> HP.modName xm /= pm) ms
allms = zip [0..] (ims' ++ ms' ++ pms')
itemsDelete lstModules
(flip mapM) allms $ \(idx, (img, m@(mn:_))) ->
listCtrlInsertItemWithLabel lstModules idx mn img >>
set lstModules [item idx := m]
varSet varModsSel $ -1
-- Refresh the current text
set txtCode [text := t,
font := fontFixed]
-- Clean the status bar
set status [text := ""]
-- Refresh the current expression box
refreshExpr model guiCtx
runHP' :: HP.HPage () -> HPS.ServerHandle -> GUIContext -> IO ()
runHP' a = runHP $ a >>= return . Right
runHP :: HP.HPage (Either HP.InterpreterError ()) -> HPS.ServerHandle -> GUIContext -> IO ()
runHP hpacc model guiCtx@GUICtx{guiWin = win} =
do
res <- tryIn model hpacc
case res of
Left err ->
warningDialog win "Error" err
Right () ->
refreshPage model guiCtx
explain model guiCtx@GUICtx{guiWin = win,
guiResults = GUIRes{resValue = txtValue,
resErrors = varErrors}} =
do
sel <- textCtrlGetStringSelection txtValue
if sel == bottomChar || sel == bottomString
then do
txt <- get txtValue text
ip <- textCtrlGetInsertionPoint txtValue
errs <- varGet varErrors
let prevTxt = take ip txt
isBottom c = [c] == bottomChar || [c] == bottomString
errNo = length $ filter isBottom prevTxt
err = if length errs > errNo
then bottomDesc $ errs !! errNo
else "Unknown"
if sel == bottomChar
then errorDialog win "Bottom Char" err
else errorDialog win "Bottom String" err
else return ()
hayoo model guiCtx@GUICtx{guiCode = txtCode, guiWin = win} =
textCtrlGetStringSelection txtCode >>= hayooDialog win
interpret model guiCtx@GUICtx{guiResults = GUIRes{resLabel = lblInterpret,
resButton = btnInterpret,
resValue = txtValue,
res4Dots = lbl4Dots,
resType = txtType},
guiCode = txtCode,
guiCharTimer = charTimer,
guiWin = win,
guiChrVar = chv,
guiValFiller = vfv,
guiChrFiller = chfv} =
do
sel <- textCtrlGetStringSelection txtCode
let runner = case sel of
"" -> tryIn
sl -> runTxtHPSelection sl
refreshExpr model guiCtx
liftTraceIO "running..."
set txtValue [enabled := False,
bgcolor := lightgrey]
res <- runner model HP.interpret
liftTraceIO "ready"
case res of
Left err ->
warningDialog win "Error" err
Right interp ->
if HP.isIntType interp
then do
set txtValue [enabled := True,
bgcolor := white,
text := HP.intKind interp]
set lbl4Dots [visible := False]
set txtType [visible := False]
set lblInterpret [text := "Kind:"]
else do
set lbl4Dots [visible := True]
set txtType [visible := True, text := HP.intType interp]
set lblInterpret [text := "Value:"]
-- now we fill the textbox --
poc <- liftIO $ get btnInterpret $ on command
let revert = do
debugIO "Cancelling..."
tryTakeMVar chv --NOTE: empty the var
debugIO "Killing the char filler..."
newchf <- spawn $ charFiller guiCtx
swapMVar chfv newchf >>= kill
debugIO "Killing the value filler..."
newvf <- spawn $ valueFiller guiCtx
swapMVar vfv newvf >>= kill
debugIO "Ready"
set txtValue [enabled := True,
bgcolor := white]
set btnInterpret [on command := poc, text := "Interpret"]
in liftIO $ set btnInterpret [text := "Cancel",
on command := revert]
liftDebugIO "sending the value to the Value Filler..."
readMVar vfv >>= flip sendTo ((HP.intValue interp), poc)
runTxtHPSelection :: String -> HPS.ServerHandle ->
HP.HPage (Either HP.InterpreterError HP.Interpretation) -> IO (Either ErrorString HP.Interpretation)
runTxtHPSelection s model hpacc =
do
piRes <- tryIn' model HP.getPageIndex
added <- tryIn' model $ HP.addPage
case added of
Left err ->
return $ Left err
Right () ->
do
let cpi = case piRes of
Left err -> 0
Right cp -> cp
newacc = HP.setPageText s (length s) >> hpacc
res <- tryIn model newacc
tryIn' model $ HP.closePage >> HP.setPageIndex cpi
return res
refreshExpr :: HPS.ServerHandle -> GUIContext -> IO ()
refreshExpr model guiCtx@GUICtx{guiCode = txtCode,
guiWin = win,
guiTimer = refreshTimer} =
do
set txtCode [font := fontFixed] -- Just to be sure
txt <- get txtCode text
ip <- textCtrlGetInsertionPoint txtCode
res <- tryIn' model $ HP.setPageText txt ip
case res of
Left err ->
warningDialog win "Error" err
Right _ ->
debugIO "refreshExpr done"
timerStop refreshTimer
-- TIMER HANDLERS --------------------------------------------------------------
restartTimer model guiCtx@GUICtx{guiWin = win, guiTimer = refreshTimer} =
do
started <- timerStart refreshTimer 1000 True
if started
then return ()
else fail "Could not start more timers"
-- INTERNAL UTILS --------------------------------------------------------------
type ErrorString = String
tryIn' :: HPS.ServerHandle -> HP.HPage x -> IO (Either ErrorString x)
tryIn' model hpacc = tryIn model $ hpacc >>= return . Right
tryIn :: HPS.ServerHandle -> HP.HPage (Either HP.InterpreterError x) -> IO (Either ErrorString x)
tryIn model hpacc =
do
res <- HPS.runIn model $ catchError (hpacc >>= return . Right)
(\ioerr -> return $ Left ioerr)
case res of
Left err -> return . Left $ ioeGetErrorString err
Right (Left err) -> return . Left $ HP.prettyPrintError err
Right (Right val) -> return . Right $ val
-- FIND/REPLACE UTILS ----------------------------------------------------------
data FRFlags = FRFlags {frfGoingDown :: Bool,
frfMatchCase :: Bool,
frfWholeWord :: Bool,
frfWrapSearch :: Bool}
deriving (Eq, Show)
buildFRFlags :: Bool -> Int -> IO FRFlags
buildFRFlags w x = return FRFlags {frfGoingDown = (x .&. wxFR_DOWN) /= 0,
frfMatchCase = (x .&. wxFR_MATCHCASE) /= 0,
frfWholeWord = (x .&. wxFR_WHOLEWORD) /= 0,
frfWrapSearch = w}
openFindDialog :: HPS.ServerHandle -> GUIContext -> String -> Int -> IO ()
openFindDialog model guiCtx@GUICtx{guiWin = win,
guiSearch = search} title dlgStyle =
do
frdialog <- findReplaceDialogCreate win search title $ dlgStyle + wxFR_NOWHOLEWORD
let winSet k f = let hnd _ = f model guiCtx >> propagateEvent
in windowOnEvent frdialog [k] hnd hnd
winSet wxEVT_COMMAND_FIND findNextButton
winSet wxEVT_COMMAND_FIND_NEXT findNextButton
winSet wxEVT_COMMAND_FIND_REPLACE findReplaceButton
winSet wxEVT_COMMAND_FIND_REPLACE_ALL findReplaceAllButton
set frdialog [visible := True]
findNextButton, findReplaceButton, findReplaceAllButton :: HPS.ServerHandle -> GUIContext -> IO ()
findNextButton model guiCtx@GUICtx{guiCode = txtCode,
guiWin = win,
guiSearch = search} =
do
s <- findReplaceDataGetFindString search
fs <- findReplaceDataGetFlags search >>= buildFRFlags True
mip <- findMatch s fs txtCode
debugIO ("find/next", s, fs, mip)
case mip of
Nothing ->
infoDialog win "Find Results" $ s ++ " not found."
Just ip ->
do
textCtrlSetInsertionPoint txtCode ip
refreshExpr model guiCtx
textCtrlSetSelection txtCode ip (length s + ip)
findReplaceButton model guiCtx@GUICtx{guiCode = txtCode,
guiWin = win,
guiSearch = search} =
do
s <- findReplaceDataGetFindString search
r <- findReplaceDataGetReplaceString search
fs <- findReplaceDataGetFlags search >>= buildFRFlags True
mip <- findMatch s fs txtCode
debugIO ("replace", s, r, fs, mip)
case mip of
Nothing ->
infoDialog win "Find Results" $ s ++ " not found."
Just ip ->
do
textCtrlReplace txtCode ip (length s + ip) r
textCtrlSetInsertionPoint txtCode ip
refreshExpr model guiCtx
textCtrlSetSelection txtCode ip (length r + ip)
findReplaceAllButton _model GUICtx{guiCode = txtCode,
guiSearch = search} =
do
s <- findReplaceDataGetFindString search
r <- findReplaceDataGetReplaceString search
fs <- findReplaceDataGetFlags search >>= buildFRFlags False
debugIO ("all", s, r, fs)
textCtrlSetInsertionPoint txtCode 0
unfoldM_ $ do
mip <- findMatch s fs txtCode
case mip of
Nothing ->
return mip
Just ip ->
do
textCtrlReplace txtCode ip (length s + ip) r
textCtrlSetInsertionPoint txtCode $ length r + ip
return mip
findMatch :: String -> FRFlags -> TextCtrl () -> IO (Maybe Int)
findMatch query flags txtCode =
do
txt <- get txtCode text
ip <- textCtrlGetInsertionPoint txtCode
let (substring, string) = if frfMatchCase flags
then (query, txt)
else (map toLower query, map toLower txt)
funct = if frfGoingDown flags
then nextMatch (ip + 1)
else prevMatch ip
(mip, wrapped) = funct substring string
return $ if (not $ frfWrapSearch flags) && wrapped
then Nothing
else mip
prevMatch, nextMatch :: Int -> String -> String -> (Maybe Int, Bool)
prevMatch _ [] _ = (Nothing, True) -- When looking for nothing, that's what you get
prevMatch from substring string | length string < from || from <= 0 = prevMatch (length string) substring string
| otherwise =
case nextMatch (fromBack from) (reverse substring) (reverse string) of
(Nothing, wrapped) -> (Nothing, wrapped)
(Just ri, wrapped) -> (Just $ fromBack (ri + length substring), wrapped)
where fromBack x = length string - x
nextMatch _ [] _ = (Nothing, True) -- When looking for nothing, that's what you get
nextMatch from substring string | length substring > length string = (Nothing, True)
| length string <= from = nextMatch 0 substring string
| otherwise =
let after = drop from string
before = take (from + length substring) string
aIndex = indexOf substring after
bIndex = indexOf substring before
in case aIndex of
Just ai ->
(Just $ from + ai, False)
Nothing ->
case bIndex of
Nothing -> (Nothing, True)
Just bi -> (Just bi, True)
indexOf :: String -> String -> Maybe Int
indexOf substring string = findIndex (isPrefixOf substring) $ tails string