1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537
|
-- -*-haskell-*-
-- GIMP Toolkit (GTK) CustomStore TreeModel
--
-- Author : Duncan Coutts, Axel Simon
--
-- Created: 19 Sep 2005
--
-- Copyright (C) 2005 Duncan Coutts, Axel Simon
--
-- This library is free software; you can redistribute it and/or
-- modify it under the terms of the GNU Lesser General Public
-- License as published by the Free Software Foundation; either
-- version 2.1 of the License, or (at your option) any later version.
--
-- This library is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-- Lesser General Public License for more details.
-- #prune
-- |
-- Maintainer : gtk2hs-users@lists.sourceforge.net
-- Stability : provisional
-- Portability : portable (depends on GHC)
--
-- Allows a custom data structure to be used with the 'TreeView' and other
-- widgets that follow the model-view-controller paradigm. The two models
-- 'Graphics.UI.Gtk.ModelView.ListStore.ListStore' and
-- 'Graphics.UI.Gtk.ModelView.TreeStore.TreeStore' are based on the
-- 'CustomStore'. Even if no application-specific tree model
-- should be implemented, this module is relevant in that it provides the
-- functions 'customStoreSetColumn' and
-- 'customStoreGetRow' functions.
--
module Graphics.UI.Gtk.ModelView.CustomStore (
-- * The definition of a row-based store.
CustomStore,
TreeModelFlags(..),
TreeModelIface(..),
DragSourceIface(..),
DragDestIface(..),
customStoreNew,
customStoreGetRow,
customStoreSetColumn,
customStoreGetPrivate,
customStoreGetStamp,
customStoreInvalidateIters,
-- for backwards compatability, not documented
treeModelGetRow,
treeModelSetColumn,
) where
import Control.Monad (liftM, when)
import Control.Monad.Reader (runReaderT)
import Data.IORef (IORef, newIORef, readIORef, writeIORef)
import Data.Maybe (fromMaybe)
import System.Glib.FFI hiding (maybeNull)
import System.Glib.Flags (Flags, fromFlags)
{#import System.Glib.GObject#} (GObjectClass(..), GObject(..), unGObject,
makeNewGObject, objectUnref)
{#import Graphics.UI.Gtk.Types#}
{#import Graphics.UI.Gtk.ModelView.Types#}
import Graphics.UI.Gtk.General.DNDTypes (SelectionDataM, SelectionData)
import System.Glib.StoreValue (TMType(..), GenericValue(..), valueSetGenericValue)
{#import System.Glib.GValue#} (GValue(GValue), allocaGValue)
{#import System.Glib.GType#} (GType)
import System.Glib.GValueTypes (valueSetString)
import qualified System.Glib.GTypeConstants as GConst
{#import System.Glib.GValueTypes#}
{#import System.Glib.GValue#} (valueInit)
{# context lib="gtk" prefix="gtk" #}
-- | These flags indicate various properties of a
-- 'Graphics.UI.Gtk.ModelView.TreeModel.TreeModel'.
--
-- * If a model has 'TreeModelItersPersist' set, iterators remain valid after
-- a 'Graphics.UI.Gtk.ModelView.TreeModel.TreeModel' signal was emitted.
--
-- * The 'TreeModelListOnly' flag is set if the rows are arranged in a simple
-- flat list. This is set in the
-- 'Graphics.UI.Gtk.ModelView.ListStore.ListStore' implementation.
--
{#enum TreeModelFlags {underscoreToCase} deriving(Bounded)#}
instance Flags TreeModelFlags
-- A 'CustomStore' is backed by a Gtk2HsStore
-- which is an instance of the GtkTreeModel GInterface
-- it also stores some extra per-model-type private data
-- | A 'CustomStore' is an instance of a Gtk+ 'TreeModel' and can thus be used
-- for any widget that stores data in a 'TreeModel'. The user may either
-- create an instance of a 'CustomStore' or use one of the pre-defined
-- models 'Graphics.UI.Gtk.ModelView.ListStore.ListStore' of
-- 'Graphics.UI.Gtk.ModelView.TreeStore.TreeStore'.
newtype CustomStore private row = CustomStore (ForeignPtr (CustomStore private row))
instance TreeModelClass (CustomStore private row)
instance GObjectClass (CustomStore private row) where
toGObject (CustomStore tm) = GObject (castForeignPtr tm)
unsafeCastGObject = CustomStore . castForeignPtr . unGObject
-- | Type synonym for viewing the store as a set of columns.
type ColumnMap row = IORef [ColumnAccess row]
-- | Create a new 'ColumnMap' value.
columnMapNew :: IO (ColumnMap row)
columnMapNew = newIORef []
-- | Set or update a column mapping. This function should be used before
-- the model is installed into a widget since the number of defined
-- columns are only checked once by widgets.
customStoreSetColumn :: TypedTreeModelClass model
=> model row -- ^ the store in which to allocate a new column
-> (ColumnId row ty) -- ^ the column that should be set
-> (row -> ty) -- ^ the function that sets the property
-> IO ()
customStoreSetColumn model (ColumnId _ setter colId) acc | colId<0 = return ()
| otherwise =
case toTypedTreeModel model of
TypedTreeModel model -> do
ptr <- withForeignPtr model gtk2hs_store_get_impl
impl <- deRefStablePtr ptr
let cMap = customStoreColumns impl
cols <- readIORef cMap
let l = length cols
if colId>=l then do
let fillers = replicate (colId-l) CAInvalid
writeIORef cMap (cols++fillers++[setter acc])
else do
let (beg,_:end) = splitAt colId cols
writeIORef cMap (beg++setter acc:end)
-- this is a backwards compatability definition
treeModelSetColumn :: TypedTreeModelClass model
=> model row -- ^ the store in which to allocate a new column
-> (ColumnId row ty) -- ^ the column that should be set
-> (row -> ty) -- ^ the function that sets the property
-> IO ()
treeModelSetColumn = customStoreSetColumn
data CustomStoreImplementation model row = CustomStoreImplementation {
customStoreColumns :: ColumnMap row, -- provide access via columns
customStoreIface :: TreeModelIface row, -- functions implementing a tree model
customTreeDragSourceIface :: DragSourceIface model row, -- the drag and drop source interface
customTreeDragDestIface :: DragDestIface model row -- the drag and drop dest interface
}
-- | The 'TreeModelIface' structure contains all functions that are required
-- to implement an application-specific 'TreeModel'.
data TreeModelIface row = TreeModelIface {
-- | Return the flags that are valid for this model.
treeModelIfaceGetFlags :: IO [TreeModelFlags],
-- | Convert an path into the tree into a more concise 'TreeIter'.
-- Return @Nothing@ if the path does not exit.
treeModelIfaceGetIter :: TreePath -> IO (Maybe TreeIter), -- convert a path to an iterator
-- | Convert an iterator to a path. The iterator will always be valid.
treeModelIfaceGetPath :: TreeIter -> IO TreePath, -- convert an interator to a path
-- | Retrieve a row at the given iterator.
treeModelIfaceGetRow :: TreeIter -> IO row, -- get the row at an iter
-- | Advance the given iterator to the next node at the same level.
-- Return @Nothing@ if there is no next node at this level.
treeModelIfaceIterNext :: TreeIter -> IO (Maybe TreeIter), -- following row (if any)
-- | Advance the given iterator to the first child of this iterator.
-- Return @Notihing@ if the node at this iterator has no children.
treeModelIfaceIterChildren :: Maybe TreeIter -> IO (Maybe TreeIter), -- first child row (if any)
-- | Check if the node at the given iterator has children.
treeModelIfaceIterHasChild :: TreeIter -> IO Bool, -- row has any children at all
-- | Query the number of children the the node at the given iteratore has.
treeModelIfaceIterNChildren :: Maybe TreeIter -> IO Int, -- number of children of a row
-- | Ask for an iterator to the @n@th child. Return @Nothing@ if
-- no such child exists.
treeModelIfaceIterNthChild :: Maybe TreeIter -> Int -> IO (Maybe TreeIter), -- nth child row of a given row
-- | Ask for an iterator to the parent of the node.
treeModelIfaceIterParent :: TreeIter -> IO (Maybe TreeIter), -- parent row of a row
-- | Increase a reference count for this node. A positive reference count
-- indicates that the node is used (that is, most likely it is visible)
-- in at least one widget. Tracking reference counts for nodes is
-- optional but may be useful to infer when a given row can be discarded
-- if it was retrieved from an external source.
treeModelIfaceRefNode :: TreeIter -> IO (), -- caching hint
-- | Decrement the reference count of the given node.
treeModelIfaceUnrefNode :: TreeIter -> IO () -- caching hint
}
-- | A structure containing functions that enable this widget to be used
-- as a source in drag-and-drop.
data DragSourceIface model row = DragSourceIface {
-- | Determine if the row at the given path is draggable. Return
-- @False@ if for some reason this row should not be dragged by
-- the user.
treeDragSourceRowDraggable :: model row -> TreePath -> IO Bool, -- query if the row is draggable
-- | Fill in the 'SelectionDataM' structure with information on
-- the given node using
-- 'Graphics.UI.Gtk.General.Selection.selectionDataSet'.
treeDragSourceDragDataGet :: model row -> TreePath -> SelectionDataM Bool, -- store row in selection object
-- | The widget is informed that the row at the given path should
-- be deleted as the result of this drag.
treeDragSourceDragDataDelete:: model row -> TreePath -> IO Bool -- instruct store to delete the row
}
-- | A structure containing functions that enable this widget to be used
-- as a target in drag-and-drop.
data DragDestIface model row = DragDestIface {
-- | Tell the drag-and-drop mechanism if the row can be dropped at the
-- given path.
treeDragDestRowDropPossible :: model row -> TreePath -> SelectionDataM Bool, -- query if row drop is possible
-- | The data in the 'SelectionDataM' structure should be read using
-- 'Graphics.UI.Gtk.General.Selection.selectionDataGet' and
-- its information be used to insert a new row at the given path.
treeDragDestDragDataReceived:: model row -> TreePath -> SelectionDataM Bool -- insert row from selection object
}
-- | Create a new store that implements the 'TreeModelIface' interface and
-- optionally the 'DragSourceIface' and the 'DragDestIface'. If the latter two
-- are set to @Nothing@ a dummy interface is substituted that rejects every
-- drag and drop.
customStoreNew :: (TreeModelClass (model row), TypedTreeModelClass model) =>
private -- ^ Any private data the store needs to store. Usually an 'IORef'.
-> ((CustomStore private row) -> model row)
-> TreeModelIface row -- ^ Functions necessary to implement the 'TreeModel' interface.
-> Maybe (DragSourceIface model row)
-- ^ Functions to enable this store to generate drag events.
-> Maybe (DragDestIface model row)
-- ^ Functions to enable this store to receive drag events.
-> IO (model row)
customStoreNew priv con tmIface mDragSource mDragDest = do
cMap <- columnMapNew
let dummyDragSource = DragSourceIface { treeDragSourceRowDraggable = \_ _ -> return False,
treeDragSourceDragDataGet = \_ _ -> return False,
treeDragSourceDragDataDelete = \_ _ -> return False }
let dummyDragDest = DragDestIface { treeDragDestRowDropPossible = \_ _ -> return False,
treeDragDestDragDataReceived = \_ _ -> return False }
implPtr <- newStablePtr CustomStoreImplementation {
customStoreColumns = cMap,
customStoreIface = tmIface,
customTreeDragSourceIface = fromMaybe dummyDragSource mDragSource,
customTreeDragDestIface = fromMaybe dummyDragDest mDragDest }
privPtr <- newStablePtr priv
liftM con $ makeNewGObject (CustomStore, objectUnref) $
gtk2hs_store_new implPtr privPtr
foreign import ccall unsafe "Gtk2HsStore.h gtk2hs_store_new"
gtk2hs_store_new :: StablePtr (CustomStoreImplementation model row)
-> StablePtr private
-> IO (Ptr (CustomStore private row))
-- | Extract a row of the given model at the given 'TreeIter'.
--
customStoreGetRow :: TypedTreeModelClass model => model row -> TreeIter -> IO row
customStoreGetRow model iter =
case toTypedTreeModel model of
TypedTreeModel model -> do
impl <- withForeignPtr model gtk2hs_store_get_impl >>= deRefStablePtr
treeModelIfaceGetRow (customStoreIface impl) iter
-- this is a backwards compatability definition
treeModelGetRow :: TypedTreeModelClass model => model row -> TreeIter -> IO row
treeModelGetRow = customStoreGetRow
foreign import ccall unsafe "Gtk2HsStore.h gtk2hs_store_get_impl"
gtk2hs_store_get_impl :: Ptr (TypedTreeModel row) -> IO (StablePtr (CustomStoreImplementation model row))
-- | Return the private data stored in this 'CustomStore'. The private data
-- is meant as a container for the data stored in this model.
customStoreGetPrivate :: CustomStore private row -> private
customStoreGetPrivate (CustomStore model) =
unsafePerformIO $ -- this is safe because the priv member is set at
-- construction time and never modified after that
withForeignPtr model gtk2hs_store_get_priv >>= deRefStablePtr
foreign import ccall unsafe "Gtk2HsStore.h gtk2hs_store_get_priv"
gtk2hs_store_get_priv :: Ptr (CustomStore private row) -> IO (StablePtr private)
-- | Query the current value of the stamp that is used to create
-- 'TreeIter' iterators. The stamp is compared each time a view
-- accesses this store. If the stamp doesn't match, a warning
-- is emitted. The stamp should be updated each time a the data
-- in the model changes. The rationale is that a view should never
-- use a stale 'TreeIter', i.e., one that refers to an old model.
--
customStoreGetStamp :: CustomStore private row -> IO CInt
customStoreGetStamp (CustomStore model) =
withForeignPtr model gtk2hs_store_get_stamp
foreign import ccall unsafe "Gtk2HsStore.h gtk2hs_store_get_stamp"
gtk2hs_store_get_stamp :: Ptr (CustomStore private row) -> IO CInt
-- | Create a new stamp. See 'customStoreGetStamp'.
--
customStoreInvalidateIters :: CustomStore private row -> IO ()
customStoreInvalidateIters (CustomStore model) =
withForeignPtr model gtk2hs_store_increment_stamp
foreign import ccall unsafe "Gtk2HsStore.h gtk2hs_store_increment_stamp"
gtk2hs_store_increment_stamp :: Ptr (CustomStore private row) -> IO ()
treeModelIfaceGetNColumns_static :: StablePtr (CustomStoreImplementation model row) -> IO CInt
treeModelIfaceGetNColumns_static storePtr = do
store <- deRefStablePtr storePtr
cmap <- readIORef (customStoreColumns store)
return (fromIntegral (length cmap))
foreign export ccall "gtk2hs_store_get_n_columns_impl"
treeModelIfaceGetNColumns_static :: StablePtr (CustomStoreImplementation model row) -> IO CInt
-- Get the 'GType' for a given 'ColumnAccess'.
caToGType :: ColumnAccess row -> GType
caToGType (CAInt _) = GConst.int
caToGType (CABool _) = GConst.bool
caToGType (CAString _) = GConst.string
caToGType (CAPixbuf _) = {#call fun unsafe gdk_pixbuf_get_type#}
caToGType CAInvalid = GConst.int -- to avoid warnings of functions that iterate through all columns
treeModelIfaceGetColumnType_static :: StablePtr (CustomStoreImplementation model row) -> CInt -> IO GType
treeModelIfaceGetColumnType_static storePtr column = do
store <- deRefStablePtr storePtr
cols <- readIORef (customStoreColumns store)
case drop (fromIntegral column) cols of
[] -> return GConst.invalid
(ca:_) -> return (caToGType ca)
foreign export ccall "gtk2hs_store_get_column_type_impl"
treeModelIfaceGetColumnType_static :: StablePtr (CustomStoreImplementation model row) -> CInt -> IO GType
treeModelIfaceGetFlags_static :: StablePtr (CustomStoreImplementation model row) -> IO CInt
treeModelIfaceGetFlags_static storePtr = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
liftM (fromIntegral . fromFlags) $ treeModelIfaceGetFlags store
foreign export ccall "gtk2hs_store_get_flags_impl"
treeModelIfaceGetFlags_static :: StablePtr (CustomStoreImplementation model row) -> IO CInt
treeModelIfaceGetIter_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> Ptr NativeTreePath -> IO CInt
treeModelIfaceGetIter_static storePtr iterPtr pathPtr = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
path <- peekTreePath pathPtr
iter <- treeModelIfaceGetIter store path
case iter of
Nothing -> return (fromBool False)
Just iter -> do poke iterPtr iter
return (fromBool True)
foreign export ccall "gtk2hs_store_get_iter_impl"
treeModelIfaceGetIter_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> Ptr NativeTreePath -> IO CInt
treeModelIfaceGetPath_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO (Ptr NativeTreePath)
treeModelIfaceGetPath_static storePtr iterPtr = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
iter <- peek iterPtr
path <- treeModelIfaceGetPath store iter
NativeTreePath pathPtr <- newTreePath path
return pathPtr
foreign export ccall "gtk2hs_store_get_path_impl"
treeModelIfaceGetPath_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO (Ptr NativeTreePath)
treeModelIfaceGetValue_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> CInt -> Ptr GValue -> IO ()
treeModelIfaceGetValue_static storePtr iterPtr column gvaluePtr = do
store <- deRefStablePtr storePtr
iter <- peek iterPtr
row <- treeModelIfaceGetRow (customStoreIface store) iter
cols <- readIORef (customStoreColumns store)
let gVal = (GValue gvaluePtr)
0 <- {# get GValue->g_type #} gvaluePtr
case drop (fromIntegral column) cols of
[] -> valueInit gVal GConst.invalid -- column number out of range
(acc:_) -> case acc of
(CAInt ca) -> valueInit gVal GConst.int >> valueSetInt gVal (ca row)
(CABool ca) -> valueInit gVal GConst.bool >> valueSetBool gVal (ca row)
(CAString ca) -> valueInit gVal GConst.string >> valueSetString gVal (ca row)
(CAPixbuf ca) -> valueInit gVal {#call fun unsafe gdk_pixbuf_get_type#} >>
valueSetGObject gVal (ca row)
CAInvalid -> valueInit gVal GConst.int >> valueSetInt gVal 0
foreign export ccall "gtk2hs_store_get_value_impl"
treeModelIfaceGetValue_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> CInt -> Ptr GValue -> IO ()
treeModelIfaceIterNext_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO CInt
treeModelIfaceIterNext_static storePtr iterPtr = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
iter <- peek iterPtr
iter' <- treeModelIfaceIterNext store iter
case iter' of
Nothing -> return (fromBool False)
Just iter' -> do poke iterPtr iter'
return (fromBool True)
foreign export ccall "gtk2hs_store_iter_next_impl"
treeModelIfaceIterNext_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO CInt
treeModelIfaceIterChildren_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> Ptr TreeIter -> IO CInt
treeModelIfaceIterChildren_static storePtr iterPtr parentIterPtr = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
parentIter <- maybeNull peek parentIterPtr
iter <- treeModelIfaceIterChildren store parentIter
case iter of
Nothing -> return (fromBool False)
Just iter -> do poke iterPtr iter
return (fromBool True)
foreign export ccall "gtk2hs_store_iter_children_impl"
treeModelIfaceIterChildren_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> Ptr TreeIter -> IO CInt
treeModelIfaceIterHasChild_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO CInt
treeModelIfaceIterHasChild_static storePtr iterPtr = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
iter <- peek iterPtr
liftM fromBool $ treeModelIfaceIterHasChild store iter
foreign export ccall "gtk2hs_store_iter_has_child_impl"
treeModelIfaceIterHasChild_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO CInt
treeModelIfaceIterNChildren_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO CInt
treeModelIfaceIterNChildren_static storePtr iterPtr = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
iter <- maybeNull peek iterPtr
liftM fromIntegral $ treeModelIfaceIterNChildren store iter
foreign export ccall "gtk2hs_store_iter_n_children_impl"
treeModelIfaceIterNChildren_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO CInt
treeModelIfaceIterNthChild_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> Ptr TreeIter -> CInt -> IO CInt
treeModelIfaceIterNthChild_static storePtr iterPtr parentIterPtr n = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
parentIter <- maybeNull peek parentIterPtr
iter <- treeModelIfaceIterNthChild store parentIter (fromIntegral n)
case iter of
Nothing -> return (fromBool False)
Just iter -> do poke iterPtr iter
return (fromBool True)
foreign export ccall "gtk2hs_store_iter_nth_child_impl"
treeModelIfaceIterNthChild_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> Ptr TreeIter -> CInt -> IO CInt
treeModelIfaceIterParent_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> Ptr TreeIter -> IO CInt
treeModelIfaceIterParent_static storePtr iterPtr childIterPtr = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
childIter <- peek childIterPtr
iter <- treeModelIfaceIterParent store childIter
case iter of
Nothing -> return (fromBool False)
Just iter -> do poke iterPtr iter
return (fromBool True)
foreign export ccall "gtk2hs_store_iter_parent_impl"
treeModelIfaceIterParent_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> Ptr TreeIter -> IO CInt
treeModelIfaceRefNode_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO ()
treeModelIfaceRefNode_static storePtr iterPtr = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
iter <- peek iterPtr
treeModelIfaceRefNode store iter
foreign export ccall "gtk2hs_store_ref_node_impl"
treeModelIfaceRefNode_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO ()
treeModelIfaceUnrefNode_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO ()
treeModelIfaceUnrefNode_static storePtr iterPtr = do
store <- liftM customStoreIface $ deRefStablePtr storePtr
iter <- peek iterPtr
treeModelIfaceUnrefNode store iter
foreign export ccall "gtk2hs_store_unref_node_impl"
treeModelIfaceUnrefNode_static :: StablePtr (CustomStoreImplementation model row) -> Ptr TreeIter -> IO ()
treeDragSourceRowDraggable_static :: Ptr TreeModel -> StablePtr (CustomStoreImplementation model row) -> Ptr NativeTreePath -> IO CInt
treeDragSourceRowDraggable_static mPtr storePtr pathPtr = do
model <- makeNewGObject mkTreeModel (return mPtr)
store <- liftM customTreeDragSourceIface $ deRefStablePtr storePtr
path <- peekTreePath pathPtr
liftM fromBool $ treeDragSourceRowDraggable store (unsafeTreeModelToGeneric model) path
foreign export ccall "gtk2hs_store_row_draggable_impl"
treeDragSourceRowDraggable_static :: Ptr TreeModel -> StablePtr (CustomStoreImplementation model row) -> Ptr NativeTreePath -> IO CInt
treeDragSourceDragDataGet_static :: Ptr TreeModel -> StablePtr (CustomStoreImplementation model row) -> Ptr NativeTreePath -> SelectionData -> IO CInt
treeDragSourceDragDataGet_static mPtr storePtr pathPtr selectionPtr = do
model <- makeNewGObject mkTreeModel (return mPtr)
store <- liftM customTreeDragSourceIface $ deRefStablePtr storePtr
path <- peekTreePath pathPtr
liftM fromBool $ runReaderT (treeDragSourceDragDataGet store (unsafeTreeModelToGeneric model) path) selectionPtr
foreign export ccall "gtk2hs_store_drag_data_get_impl"
treeDragSourceDragDataGet_static :: Ptr TreeModel -> StablePtr (CustomStoreImplementation model row) -> Ptr NativeTreePath -> SelectionData -> IO CInt
treeDragSourceDragDataDelete_static :: Ptr TreeModel -> StablePtr (CustomStoreImplementation model row) -> Ptr NativeTreePath -> IO CInt
treeDragSourceDragDataDelete_static mPtr storePtr pathPtr = do
model <- makeNewGObject mkTreeModel (return mPtr)
store <- liftM customTreeDragSourceIface $ deRefStablePtr storePtr
path <- peekTreePath pathPtr
liftM fromBool $ treeDragSourceDragDataDelete store (unsafeTreeModelToGeneric model) path
foreign export ccall "gtk2hs_store_drag_data_delete_impl"
treeDragSourceDragDataDelete_static :: Ptr TreeModel -> StablePtr (CustomStoreImplementation model row) -> Ptr NativeTreePath -> IO CInt
treeDragDestDragDataReceived_static :: Ptr TreeModel -> StablePtr (CustomStoreImplementation model row) -> Ptr NativeTreePath -> SelectionData -> IO CInt
treeDragDestDragDataReceived_static mPtr storePtr pathPtr selectionPtr = do
model <- makeNewGObject mkTreeModel (return mPtr)
store <- liftM customTreeDragDestIface $ deRefStablePtr storePtr
path <- peekTreePath pathPtr
liftM fromBool $ runReaderT (treeDragDestDragDataReceived store (unsafeTreeModelToGeneric model) path) selectionPtr
foreign export ccall "gtk2hs_store_drag_data_received_impl"
treeDragDestDragDataReceived_static :: Ptr TreeModel -> StablePtr (CustomStoreImplementation model row) -> Ptr NativeTreePath -> SelectionData -> IO CInt
treeDragDestRowDropPossible_static :: Ptr TreeModel -> StablePtr (CustomStoreImplementation model row) -> Ptr NativeTreePath -> SelectionData -> IO CInt
treeDragDestRowDropPossible_static mPtr storePtr pathPtr selectionPtr = do
model <- makeNewGObject mkTreeModel (return mPtr)
store <- liftM customTreeDragDestIface $ deRefStablePtr storePtr
path <- peekTreePath pathPtr
liftM fromBool $ runReaderT (treeDragDestRowDropPossible store (unsafeTreeModelToGeneric model) path) selectionPtr
foreign export ccall "gtk2hs_store_row_drop_possible_impl"
treeDragDestRowDropPossible_static :: Ptr TreeModel -> StablePtr (CustomStoreImplementation model row) -> Ptr NativeTreePath -> SelectionData -> IO CInt
maybeNull :: (Ptr a -> IO b) -> Ptr a -> IO (Maybe b)
maybeNull marshal ptr
| ptr == nullPtr = return Nothing
| otherwise = liftM Just (marshal ptr)
iterSetStamp :: CInt -> TreeIter -> TreeIter
iterSetStamp t (TreeIter _ a b c) = (TreeIter t a b c)
|