gi-gtk-3.0.28: GI/Gtk/Interfaces/TreeModel.hs

{- |
Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
License    : LGPL-2.1
Maintainer : Iñaki García Etxebarria (inaki@blueleaf.cc)

The 'GI.Gtk.Interfaces.TreeModel.TreeModel' interface defines a generic tree interface for
use by the 'GI.Gtk.Objects.TreeView.TreeView' widget. It is an abstract interface, and
is designed to be usable with any appropriate data structure. The
programmer just has to implement this interface on their own data
type for it to be viewable by a 'GI.Gtk.Objects.TreeView.TreeView' widget.

The model is represented as a hierarchical tree of strongly-typed,
columned data. In other words, the model can be seen as a tree where
every node has different values depending on which column is being
queried. The type of data found in a column is determined by using
the GType system (ie. @/G_TYPE_INT/@, @/GTK_TYPE_BUTTON/@, @/G_TYPE_POINTER/@,
etc). The types are homogeneous per column across all nodes. It is
important to note that this interface only provides a way of examining
a model and observing changes. The implementation of each individual
model decides how and if changes are made.

In order to make life simpler for programmers who do not need to
write their own specialized model, two generic models are provided
— the 'GI.Gtk.Objects.TreeStore.TreeStore' and the 'GI.Gtk.Objects.ListStore.ListStore'. To use these, the
developer simply pushes data into these models as necessary. These
models provide the data structure as well as all appropriate tree
interfaces. As a result, implementing drag and drop, sorting, and
storing data is trivial. For the vast majority of trees and lists,
these two models are sufficient.

Models are accessed on a node\/column level of granularity. One can
query for the value of a model at a certain node and a certain
column on that node. There are two structures used to reference a
particular node in a model. They are the 'GI.Gtk.Structs.TreePath.TreePath'-struct and
the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct (“iter” is short for iterator). Most of the
interface consists of operations on a 'GI.Gtk.Structs.TreeIter.TreeIter'-struct.

A path is essentially a potential node. It is a location on a model
that may or may not actually correspond to a node on a specific
model. The 'GI.Gtk.Structs.TreePath.TreePath'-struct can be converted into either an
array of unsigned integers or a string. The string form is a list
of numbers separated by a colon. Each number refers to the offset
at that level. Thus, the path @0@ refers to the root
node and the path @2:4@ refers to the fifth child of
the third node.

By contrast, a 'GI.Gtk.Structs.TreeIter.TreeIter'-struct is a reference to a specific node on
a specific model. It is a generic struct with an integer and three
generic pointers. These are filled in by the model in a model-specific
way. One can convert a path to an iterator by calling
'GI.Gtk.Interfaces.TreeModel.treeModelGetIter'. These iterators are the primary way
of accessing a model and are similar to the iterators used by
'GI.Gtk.Objects.TextBuffer.TextBuffer'. They are generally statically allocated on the
stack and only used for a short time. The model interface defines
a set of operations using them for navigating the model.

It is expected that models fill in the iterator with private data.
For example, the 'GI.Gtk.Objects.ListStore.ListStore' model, which is internally a simple
linked list, stores a list node in one of the pointers. The
'GI.Gtk.Objects.TreeModelSort.TreeModelSort' stores an array and an offset in two of the
pointers. Additionally, there is an integer field. This field is
generally filled with a unique stamp per model. This stamp is for
catching errors resulting from using invalid iterators with a model.

The lifecycle of an iterator can be a little confusing at first.
Iterators are expected to always be valid for as long as the model
is unchanged (and doesn’t emit a signal). The model is considered
to own all outstanding iterators and nothing needs to be done to
free them from the user’s point of view. Additionally, some models
guarantee that an iterator is valid for as long as the node it refers
to is valid (most notably the 'GI.Gtk.Objects.TreeStore.TreeStore' and 'GI.Gtk.Objects.ListStore.ListStore').
Although generally uninteresting, as one always has to allow for
the case where iterators do not persist beyond a signal, some very
important performance enhancements were made in the sort model.
As a result, the @/GTK_TREE_MODEL_ITERS_PERSIST/@ flag was added to
indicate this behavior.

To help show some common operation of a model, some examples are
provided. The first example shows three ways of getting the iter at
the location @3:2:5@. While the first method shown is
easier, the second is much more common, as you often get paths from
callbacks.

## Acquiring a 'GI.Gtk.Structs.TreeIter.TreeIter'-struct


=== /C code/
>
>// Three ways of getting the iter pointing to the location
>GtkTreePath *path;
>GtkTreeIter iter;
>GtkTreeIter parent_iter;
>
>// get the iterator from a string
>gtk_tree_model_get_iter_from_string (model,
>                                     &iter,
>                                     "3:2:5");
>
>// get the iterator from a path
>path = gtk_tree_path_new_from_string ("3:2:5");
>gtk_tree_model_get_iter (model, &iter, path);
>gtk_tree_path_free (path);
>
>// walk the tree to find the iterator
>gtk_tree_model_iter_nth_child (model, &iter,
>                               NULL, 3);
>parent_iter = iter;
>gtk_tree_model_iter_nth_child (model, &iter,
>                               &parent_iter, 2);
>parent_iter = iter;
>gtk_tree_model_iter_nth_child (model, &iter,
>                               &parent_iter, 5);


This second example shows a quick way of iterating through a list
and getting a string and an integer from each row. The
@/populate_model()/@ function used below is not
shown, as it is specific to the 'GI.Gtk.Objects.ListStore.ListStore'. For information on
how to write such a function, see the 'GI.Gtk.Objects.ListStore.ListStore' documentation.

## Reading data from a 'GI.Gtk.Interfaces.TreeModel.TreeModel'


=== /C code/
>
>enum
>{
>  STRING_COLUMN,
>  INT_COLUMN,
>  N_COLUMNS
>};
>
>...
>
>GtkTreeModel *list_store;
>GtkTreeIter iter;
>gboolean valid;
>gint row_count = 0;
>
>// make a new list_store
>list_store = gtk_list_store_new (N_COLUMNS,
>                                 G_TYPE_STRING,
>                                 G_TYPE_INT);
>
>// Fill the list store with data
>populate_model (list_store);
>
>// Get the first iter in the list, check it is valid and walk
>// through the list, reading each row.
>
>valid = gtk_tree_model_get_iter_first (list_store,
>                                       &iter);
>while (valid)
> {
>   gchar *str_data;
>   gint   int_data;
>
>   // Make sure you terminate calls to gtk_tree_model_get() with a “-1” value
>   gtk_tree_model_get (list_store, &iter,
>                       STRING_COLUMN, &str_data,
>                       INT_COLUMN, &int_data,
>                       -1);
>
>   // Do something with the data
>   g_print ("Row %d: (%s,%d)\n",
>            row_count, str_data, int_data);
>   g_free (str_data);
>
>   valid = gtk_tree_model_iter_next (list_store,
>                                     &iter);
>   row_count++;
> }


The 'GI.Gtk.Interfaces.TreeModel.TreeModel' interface contains two methods for reference
counting: 'GI.Gtk.Interfaces.TreeModel.treeModelRefNode' and 'GI.Gtk.Interfaces.TreeModel.treeModelUnrefNode'.
These two methods are optional to implement. The reference counting
is meant as a way for views to let models know when nodes are being
displayed. 'GI.Gtk.Objects.TreeView.TreeView' will take a reference on a node when it is
visible, which means the node is either in the toplevel or expanded.
Being displayed does not mean that the node is currently directly
visible to the user in the viewport. Based on this reference counting
scheme a caching model, for example, can decide whether or not to cache
a node based on the reference count. A file-system based model would
not want to keep the entire file hierarchy in memory, but just the
folders that are currently expanded in every current view.

When working with reference counting, the following rules must be taken
into account:

* Never take a reference on a node without owning a reference on its parent.
This means that all parent nodes of a referenced node must be referenced
as well.
* Outstanding references on a deleted node are not released. This is not
possible because the node has already been deleted by the time the
row-deleted signal is received.
* Models are not obligated to emit a signal on rows of which none of its
siblings are referenced. To phrase this differently, signals are only
required for levels in which nodes are referenced. For the root level
however, signals must be emitted at all times (however the root level
is always referenced when any view is attached).

-}

#define ENABLE_OVERLOADING (MIN_VERSION_haskell_gi_overloading(1,0,0) \
       && !defined(__HADDOCK_VERSION__))

module GI.Gtk.Interfaces.TreeModel
    ( 

-- * Exported types
    TreeModel(..)                           ,
    noTreeModel                             ,
    IsTreeModel                             ,
    toTreeModel                             ,


 -- * Methods
-- ** filterNew #method:filterNew#

#if ENABLE_OVERLOADING
    TreeModelFilterNewMethodInfo            ,
#endif
    treeModelFilterNew                      ,


-- ** foreach #method:foreach#

#if ENABLE_OVERLOADING
    TreeModelForeachMethodInfo              ,
#endif
    treeModelForeach                        ,


-- ** getColumnType #method:getColumnType#

#if ENABLE_OVERLOADING
    TreeModelGetColumnTypeMethodInfo        ,
#endif
    treeModelGetColumnType                  ,


-- ** getFlags #method:getFlags#

#if ENABLE_OVERLOADING
    TreeModelGetFlagsMethodInfo             ,
#endif
    treeModelGetFlags                       ,


-- ** getIter #method:getIter#

#if ENABLE_OVERLOADING
    TreeModelGetIterMethodInfo              ,
#endif
    treeModelGetIter                        ,


-- ** getIterFirst #method:getIterFirst#

#if ENABLE_OVERLOADING
    TreeModelGetIterFirstMethodInfo         ,
#endif
    treeModelGetIterFirst                   ,


-- ** getIterFromString #method:getIterFromString#

#if ENABLE_OVERLOADING
    TreeModelGetIterFromStringMethodInfo    ,
#endif
    treeModelGetIterFromString              ,


-- ** getNColumns #method:getNColumns#

#if ENABLE_OVERLOADING
    TreeModelGetNColumnsMethodInfo          ,
#endif
    treeModelGetNColumns                    ,


-- ** getPath #method:getPath#

#if ENABLE_OVERLOADING
    TreeModelGetPathMethodInfo              ,
#endif
    treeModelGetPath                        ,


-- ** getStringFromIter #method:getStringFromIter#

#if ENABLE_OVERLOADING
    TreeModelGetStringFromIterMethodInfo    ,
#endif
    treeModelGetStringFromIter              ,


-- ** getValue #method:getValue#

#if ENABLE_OVERLOADING
    TreeModelGetValueMethodInfo             ,
#endif
    treeModelGetValue                       ,


-- ** iterChildren #method:iterChildren#

#if ENABLE_OVERLOADING
    TreeModelIterChildrenMethodInfo         ,
#endif
    treeModelIterChildren                   ,


-- ** iterHasChild #method:iterHasChild#

#if ENABLE_OVERLOADING
    TreeModelIterHasChildMethodInfo         ,
#endif
    treeModelIterHasChild                   ,


-- ** iterNChildren #method:iterNChildren#

#if ENABLE_OVERLOADING
    TreeModelIterNChildrenMethodInfo        ,
#endif
    treeModelIterNChildren                  ,


-- ** iterNext #method:iterNext#

#if ENABLE_OVERLOADING
    TreeModelIterNextMethodInfo             ,
#endif
    treeModelIterNext                       ,


-- ** iterNthChild #method:iterNthChild#

#if ENABLE_OVERLOADING
    TreeModelIterNthChildMethodInfo         ,
#endif
    treeModelIterNthChild                   ,


-- ** iterParent #method:iterParent#

#if ENABLE_OVERLOADING
    TreeModelIterParentMethodInfo           ,
#endif
    treeModelIterParent                     ,


-- ** iterPrevious #method:iterPrevious#

#if ENABLE_OVERLOADING
    TreeModelIterPreviousMethodInfo         ,
#endif
    treeModelIterPrevious                   ,


-- ** refNode #method:refNode#

#if ENABLE_OVERLOADING
    TreeModelRefNodeMethodInfo              ,
#endif
    treeModelRefNode                        ,


-- ** rowChanged #method:rowChanged#

#if ENABLE_OVERLOADING
    TreeModelRowChangedMethodInfo           ,
#endif
    treeModelRowChanged                     ,


-- ** rowDeleted #method:rowDeleted#

#if ENABLE_OVERLOADING
    TreeModelRowDeletedMethodInfo           ,
#endif
    treeModelRowDeleted                     ,


-- ** rowHasChildToggled #method:rowHasChildToggled#

#if ENABLE_OVERLOADING
    TreeModelRowHasChildToggledMethodInfo   ,
#endif
    treeModelRowHasChildToggled             ,


-- ** rowInserted #method:rowInserted#

#if ENABLE_OVERLOADING
    TreeModelRowInsertedMethodInfo          ,
#endif
    treeModelRowInserted                    ,


-- ** rowsReordered #method:rowsReordered#

#if ENABLE_OVERLOADING
    TreeModelRowsReorderedMethodInfo        ,
#endif
    treeModelRowsReordered                  ,


-- ** sortNewWithModel #method:sortNewWithModel#

#if ENABLE_OVERLOADING
    TreeModelSortNewWithModelMethodInfo     ,
#endif
    treeModelSortNewWithModel               ,


-- ** unrefNode #method:unrefNode#

#if ENABLE_OVERLOADING
    TreeModelUnrefNodeMethodInfo            ,
#endif
    treeModelUnrefNode                      ,




 -- * Signals
-- ** rowChanged #signal:rowChanged#

    C_TreeModelRowChangedCallback           ,
    TreeModelRowChangedCallback             ,
#if ENABLE_OVERLOADING
    TreeModelRowChangedSignalInfo           ,
#endif
    afterTreeModelRowChanged                ,
    genClosure_TreeModelRowChanged          ,
    mk_TreeModelRowChangedCallback          ,
    noTreeModelRowChangedCallback           ,
    onTreeModelRowChanged                   ,
    wrap_TreeModelRowChangedCallback        ,


-- ** rowDeleted #signal:rowDeleted#

    C_TreeModelRowDeletedCallback           ,
    TreeModelRowDeletedCallback             ,
#if ENABLE_OVERLOADING
    TreeModelRowDeletedSignalInfo           ,
#endif
    afterTreeModelRowDeleted                ,
    genClosure_TreeModelRowDeleted          ,
    mk_TreeModelRowDeletedCallback          ,
    noTreeModelRowDeletedCallback           ,
    onTreeModelRowDeleted                   ,
    wrap_TreeModelRowDeletedCallback        ,


-- ** rowHasChildToggled #signal:rowHasChildToggled#

    C_TreeModelRowHasChildToggledCallback   ,
    TreeModelRowHasChildToggledCallback     ,
#if ENABLE_OVERLOADING
    TreeModelRowHasChildToggledSignalInfo   ,
#endif
    afterTreeModelRowHasChildToggled        ,
    genClosure_TreeModelRowHasChildToggled  ,
    mk_TreeModelRowHasChildToggledCallback  ,
    noTreeModelRowHasChildToggledCallback   ,
    onTreeModelRowHasChildToggled           ,
    wrap_TreeModelRowHasChildToggledCallback,


-- ** rowInserted #signal:rowInserted#

    C_TreeModelRowInsertedCallback          ,
    TreeModelRowInsertedCallback            ,
#if ENABLE_OVERLOADING
    TreeModelRowInsertedSignalInfo          ,
#endif
    afterTreeModelRowInserted               ,
    genClosure_TreeModelRowInserted         ,
    mk_TreeModelRowInsertedCallback         ,
    noTreeModelRowInsertedCallback          ,
    onTreeModelRowInserted                  ,
    wrap_TreeModelRowInsertedCallback       ,




    ) where

import Data.GI.Base.ShortPrelude
import qualified Data.GI.Base.ShortPrelude as SP
import qualified Data.GI.Base.Overloading as O
import qualified Prelude as P

import qualified Data.GI.Base.Attributes as GI.Attributes
import qualified Data.GI.Base.ManagedPtr as B.ManagedPtr
import qualified Data.GI.Base.GClosure as B.GClosure
import qualified Data.GI.Base.GError as B.GError
import qualified Data.GI.Base.GVariant as B.GVariant
import qualified Data.GI.Base.GValue as B.GValue
import qualified Data.GI.Base.GParamSpec as B.GParamSpec
import qualified Data.GI.Base.CallStack as B.CallStack
import qualified Data.GI.Base.Properties as B.Properties
import qualified Data.Text as T
import qualified Data.ByteString.Char8 as B
import qualified Data.Map as Map
import qualified Foreign.Ptr as FP
import qualified GHC.OverloadedLabels as OL

import qualified GI.GObject.Objects.Object as GObject.Object
import qualified GI.Gtk.Callbacks as Gtk.Callbacks
import {-# SOURCE #-} qualified GI.Gtk.Flags as Gtk.Flags
import {-# SOURCE #-} qualified GI.Gtk.Structs.TreeIter as Gtk.TreeIter
import {-# SOURCE #-} qualified GI.Gtk.Structs.TreePath as Gtk.TreePath

-- interface TreeModel 
-- | Memory-managed wrapper type.
newtype TreeModel = TreeModel (ManagedPtr TreeModel)
-- | A convenience alias for `Nothing` :: `Maybe` `TreeModel`.
noTreeModel :: Maybe TreeModel
noTreeModel = Nothing

-- signal TreeModel::row-changed
{- |
This signal is emitted when a row in the model has changed.
-}
type TreeModelRowChangedCallback =
    Gtk.TreePath.TreePath
    {- ^ /@path@/: a 'GI.Gtk.Structs.TreePath.TreePath'-struct identifying the changed row -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: a valid 'GI.Gtk.Structs.TreeIter.TreeIter'-struct pointing to the changed row -}
    -> IO ()

-- | A convenience synonym for @`Nothing` :: `Maybe` `TreeModelRowChangedCallback`@.
noTreeModelRowChangedCallback :: Maybe TreeModelRowChangedCallback
noTreeModelRowChangedCallback = Nothing

-- | Type for the callback on the (unwrapped) C side.
type C_TreeModelRowChangedCallback =
    Ptr () ->                               -- object
    Ptr Gtk.TreePath.TreePath ->
    Ptr Gtk.TreeIter.TreeIter ->
    Ptr () ->                               -- user_data
    IO ()

-- | Generate a function pointer callable from C code, from a `C_TreeModelRowChangedCallback`.
foreign import ccall "wrapper"
    mk_TreeModelRowChangedCallback :: C_TreeModelRowChangedCallback -> IO (FunPtr C_TreeModelRowChangedCallback)

-- | Wrap the callback into a `GClosure`.
genClosure_TreeModelRowChanged :: MonadIO m => TreeModelRowChangedCallback -> m (GClosure C_TreeModelRowChangedCallback)
genClosure_TreeModelRowChanged cb = liftIO $ do
    let cb' = wrap_TreeModelRowChangedCallback cb
    mk_TreeModelRowChangedCallback cb' >>= B.GClosure.newGClosure


-- | Wrap a `TreeModelRowChangedCallback` into a `C_TreeModelRowChangedCallback`.
wrap_TreeModelRowChangedCallback ::
    TreeModelRowChangedCallback ->
    C_TreeModelRowChangedCallback
wrap_TreeModelRowChangedCallback _cb _ path iter _ = do
    B.ManagedPtr.withTransient Gtk.TreePath.TreePath path $ \path' -> do
        B.ManagedPtr.withTransient Gtk.TreeIter.TreeIter iter $ \iter' -> do
            _cb  path' iter'


{- |
Connect a signal handler for the “@row-changed@” signal, to be run before the default handler.
When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to

@
'Data.GI.Base.Signals.on' treeModel #rowChanged callback
@
-}
onTreeModelRowChanged :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowChangedCallback -> m SignalHandlerId
onTreeModelRowChanged obj cb = liftIO $ do
    let cb' = wrap_TreeModelRowChangedCallback cb
    cb'' <- mk_TreeModelRowChangedCallback cb'
    connectSignalFunPtr obj "row-changed" cb'' SignalConnectBefore

{- |
Connect a signal handler for the “@row-changed@” signal, to be run after the default handler.
When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to

@
'Data.GI.Base.Signals.after' treeModel #rowChanged callback
@
-}
afterTreeModelRowChanged :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowChangedCallback -> m SignalHandlerId
afterTreeModelRowChanged obj cb = liftIO $ do
    let cb' = wrap_TreeModelRowChangedCallback cb
    cb'' <- mk_TreeModelRowChangedCallback cb'
    connectSignalFunPtr obj "row-changed" cb'' SignalConnectAfter


-- signal TreeModel::row-deleted
{- |
This signal is emitted when a row has been deleted.

Note that no iterator is passed to the signal handler,
since the row is already deleted.

This should be called by models after a row has been removed.
The location pointed to by /@path@/ should be the location that
the row previously was at. It may not be a valid location anymore.
-}
type TreeModelRowDeletedCallback =
    Gtk.TreePath.TreePath
    {- ^ /@path@/: a 'GI.Gtk.Structs.TreePath.TreePath'-struct identifying the row -}
    -> IO ()

-- | A convenience synonym for @`Nothing` :: `Maybe` `TreeModelRowDeletedCallback`@.
noTreeModelRowDeletedCallback :: Maybe TreeModelRowDeletedCallback
noTreeModelRowDeletedCallback = Nothing

-- | Type for the callback on the (unwrapped) C side.
type C_TreeModelRowDeletedCallback =
    Ptr () ->                               -- object
    Ptr Gtk.TreePath.TreePath ->
    Ptr () ->                               -- user_data
    IO ()

-- | Generate a function pointer callable from C code, from a `C_TreeModelRowDeletedCallback`.
foreign import ccall "wrapper"
    mk_TreeModelRowDeletedCallback :: C_TreeModelRowDeletedCallback -> IO (FunPtr C_TreeModelRowDeletedCallback)

-- | Wrap the callback into a `GClosure`.
genClosure_TreeModelRowDeleted :: MonadIO m => TreeModelRowDeletedCallback -> m (GClosure C_TreeModelRowDeletedCallback)
genClosure_TreeModelRowDeleted cb = liftIO $ do
    let cb' = wrap_TreeModelRowDeletedCallback cb
    mk_TreeModelRowDeletedCallback cb' >>= B.GClosure.newGClosure


-- | Wrap a `TreeModelRowDeletedCallback` into a `C_TreeModelRowDeletedCallback`.
wrap_TreeModelRowDeletedCallback ::
    TreeModelRowDeletedCallback ->
    C_TreeModelRowDeletedCallback
wrap_TreeModelRowDeletedCallback _cb _ path _ = do
    B.ManagedPtr.withTransient Gtk.TreePath.TreePath path $ \path' -> do
        _cb  path'


{- |
Connect a signal handler for the “@row-deleted@” signal, to be run before the default handler.
When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to

@
'Data.GI.Base.Signals.on' treeModel #rowDeleted callback
@
-}
onTreeModelRowDeleted :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowDeletedCallback -> m SignalHandlerId
onTreeModelRowDeleted obj cb = liftIO $ do
    let cb' = wrap_TreeModelRowDeletedCallback cb
    cb'' <- mk_TreeModelRowDeletedCallback cb'
    connectSignalFunPtr obj "row-deleted" cb'' SignalConnectBefore

{- |
Connect a signal handler for the “@row-deleted@” signal, to be run after the default handler.
When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to

@
'Data.GI.Base.Signals.after' treeModel #rowDeleted callback
@
-}
afterTreeModelRowDeleted :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowDeletedCallback -> m SignalHandlerId
afterTreeModelRowDeleted obj cb = liftIO $ do
    let cb' = wrap_TreeModelRowDeletedCallback cb
    cb'' <- mk_TreeModelRowDeletedCallback cb'
    connectSignalFunPtr obj "row-deleted" cb'' SignalConnectAfter


-- signal TreeModel::row-has-child-toggled
{- |
This signal is emitted when a row has gotten the first child
row or lost its last child row.
-}
type TreeModelRowHasChildToggledCallback =
    Gtk.TreePath.TreePath
    {- ^ /@path@/: a 'GI.Gtk.Structs.TreePath.TreePath'-struct identifying the row -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: a valid 'GI.Gtk.Structs.TreeIter.TreeIter'-struct pointing to the row -}
    -> IO ()

-- | A convenience synonym for @`Nothing` :: `Maybe` `TreeModelRowHasChildToggledCallback`@.
noTreeModelRowHasChildToggledCallback :: Maybe TreeModelRowHasChildToggledCallback
noTreeModelRowHasChildToggledCallback = Nothing

-- | Type for the callback on the (unwrapped) C side.
type C_TreeModelRowHasChildToggledCallback =
    Ptr () ->                               -- object
    Ptr Gtk.TreePath.TreePath ->
    Ptr Gtk.TreeIter.TreeIter ->
    Ptr () ->                               -- user_data
    IO ()

-- | Generate a function pointer callable from C code, from a `C_TreeModelRowHasChildToggledCallback`.
foreign import ccall "wrapper"
    mk_TreeModelRowHasChildToggledCallback :: C_TreeModelRowHasChildToggledCallback -> IO (FunPtr C_TreeModelRowHasChildToggledCallback)

-- | Wrap the callback into a `GClosure`.
genClosure_TreeModelRowHasChildToggled :: MonadIO m => TreeModelRowHasChildToggledCallback -> m (GClosure C_TreeModelRowHasChildToggledCallback)
genClosure_TreeModelRowHasChildToggled cb = liftIO $ do
    let cb' = wrap_TreeModelRowHasChildToggledCallback cb
    mk_TreeModelRowHasChildToggledCallback cb' >>= B.GClosure.newGClosure


-- | Wrap a `TreeModelRowHasChildToggledCallback` into a `C_TreeModelRowHasChildToggledCallback`.
wrap_TreeModelRowHasChildToggledCallback ::
    TreeModelRowHasChildToggledCallback ->
    C_TreeModelRowHasChildToggledCallback
wrap_TreeModelRowHasChildToggledCallback _cb _ path iter _ = do
    B.ManagedPtr.withTransient Gtk.TreePath.TreePath path $ \path' -> do
        B.ManagedPtr.withTransient Gtk.TreeIter.TreeIter iter $ \iter' -> do
            _cb  path' iter'


{- |
Connect a signal handler for the “@row-has-child-toggled@” signal, to be run before the default handler.
When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to

@
'Data.GI.Base.Signals.on' treeModel #rowHasChildToggled callback
@
-}
onTreeModelRowHasChildToggled :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowHasChildToggledCallback -> m SignalHandlerId
onTreeModelRowHasChildToggled obj cb = liftIO $ do
    let cb' = wrap_TreeModelRowHasChildToggledCallback cb
    cb'' <- mk_TreeModelRowHasChildToggledCallback cb'
    connectSignalFunPtr obj "row-has-child-toggled" cb'' SignalConnectBefore

{- |
Connect a signal handler for the “@row-has-child-toggled@” signal, to be run after the default handler.
When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to

@
'Data.GI.Base.Signals.after' treeModel #rowHasChildToggled callback
@
-}
afterTreeModelRowHasChildToggled :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowHasChildToggledCallback -> m SignalHandlerId
afterTreeModelRowHasChildToggled obj cb = liftIO $ do
    let cb' = wrap_TreeModelRowHasChildToggledCallback cb
    cb'' <- mk_TreeModelRowHasChildToggledCallback cb'
    connectSignalFunPtr obj "row-has-child-toggled" cb'' SignalConnectAfter


-- signal TreeModel::row-inserted
{- |
This signal is emitted when a new row has been inserted in
the model.

Note that the row may still be empty at this point, since
it is a common pattern to first insert an empty row, and
then fill it with the desired values.
-}
type TreeModelRowInsertedCallback =
    Gtk.TreePath.TreePath
    {- ^ /@path@/: a 'GI.Gtk.Structs.TreePath.TreePath'-struct identifying the new row -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: a valid 'GI.Gtk.Structs.TreeIter.TreeIter'-struct pointing to the new row -}
    -> IO ()

-- | A convenience synonym for @`Nothing` :: `Maybe` `TreeModelRowInsertedCallback`@.
noTreeModelRowInsertedCallback :: Maybe TreeModelRowInsertedCallback
noTreeModelRowInsertedCallback = Nothing

-- | Type for the callback on the (unwrapped) C side.
type C_TreeModelRowInsertedCallback =
    Ptr () ->                               -- object
    Ptr Gtk.TreePath.TreePath ->
    Ptr Gtk.TreeIter.TreeIter ->
    Ptr () ->                               -- user_data
    IO ()

-- | Generate a function pointer callable from C code, from a `C_TreeModelRowInsertedCallback`.
foreign import ccall "wrapper"
    mk_TreeModelRowInsertedCallback :: C_TreeModelRowInsertedCallback -> IO (FunPtr C_TreeModelRowInsertedCallback)

-- | Wrap the callback into a `GClosure`.
genClosure_TreeModelRowInserted :: MonadIO m => TreeModelRowInsertedCallback -> m (GClosure C_TreeModelRowInsertedCallback)
genClosure_TreeModelRowInserted cb = liftIO $ do
    let cb' = wrap_TreeModelRowInsertedCallback cb
    mk_TreeModelRowInsertedCallback cb' >>= B.GClosure.newGClosure


-- | Wrap a `TreeModelRowInsertedCallback` into a `C_TreeModelRowInsertedCallback`.
wrap_TreeModelRowInsertedCallback ::
    TreeModelRowInsertedCallback ->
    C_TreeModelRowInsertedCallback
wrap_TreeModelRowInsertedCallback _cb _ path iter _ = do
    B.ManagedPtr.withTransient Gtk.TreePath.TreePath path $ \path' -> do
        B.ManagedPtr.withTransient Gtk.TreeIter.TreeIter iter $ \iter' -> do
            _cb  path' iter'


{- |
Connect a signal handler for the “@row-inserted@” signal, to be run before the default handler.
When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to

@
'Data.GI.Base.Signals.on' treeModel #rowInserted callback
@
-}
onTreeModelRowInserted :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowInsertedCallback -> m SignalHandlerId
onTreeModelRowInserted obj cb = liftIO $ do
    let cb' = wrap_TreeModelRowInsertedCallback cb
    cb'' <- mk_TreeModelRowInsertedCallback cb'
    connectSignalFunPtr obj "row-inserted" cb'' SignalConnectBefore

{- |
Connect a signal handler for the “@row-inserted@” signal, to be run after the default handler.
When <https://github.com/haskell-gi/haskell-gi/wiki/Overloading overloading> is enabled, this is equivalent to

@
'Data.GI.Base.Signals.after' treeModel #rowInserted callback
@
-}
afterTreeModelRowInserted :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowInsertedCallback -> m SignalHandlerId
afterTreeModelRowInserted obj cb = liftIO $ do
    let cb' = wrap_TreeModelRowInsertedCallback cb
    cb'' <- mk_TreeModelRowInsertedCallback cb'
    connectSignalFunPtr obj "row-inserted" cb'' SignalConnectAfter


#if ENABLE_OVERLOADING
data TreeModelRowChangedSignalInfo
instance SignalInfo TreeModelRowChangedSignalInfo where
    type HaskellCallbackType TreeModelRowChangedSignalInfo = TreeModelRowChangedCallback
    connectSignal _ obj cb connectMode = do
        let cb' = wrap_TreeModelRowChangedCallback cb
        cb'' <- mk_TreeModelRowChangedCallback cb'
        connectSignalFunPtr obj "row-changed" cb'' connectMode

data TreeModelRowDeletedSignalInfo
instance SignalInfo TreeModelRowDeletedSignalInfo where
    type HaskellCallbackType TreeModelRowDeletedSignalInfo = TreeModelRowDeletedCallback
    connectSignal _ obj cb connectMode = do
        let cb' = wrap_TreeModelRowDeletedCallback cb
        cb'' <- mk_TreeModelRowDeletedCallback cb'
        connectSignalFunPtr obj "row-deleted" cb'' connectMode

data TreeModelRowHasChildToggledSignalInfo
instance SignalInfo TreeModelRowHasChildToggledSignalInfo where
    type HaskellCallbackType TreeModelRowHasChildToggledSignalInfo = TreeModelRowHasChildToggledCallback
    connectSignal _ obj cb connectMode = do
        let cb' = wrap_TreeModelRowHasChildToggledCallback cb
        cb'' <- mk_TreeModelRowHasChildToggledCallback cb'
        connectSignalFunPtr obj "row-has-child-toggled" cb'' connectMode

data TreeModelRowInsertedSignalInfo
instance SignalInfo TreeModelRowInsertedSignalInfo where
    type HaskellCallbackType TreeModelRowInsertedSignalInfo = TreeModelRowInsertedCallback
    connectSignal _ obj cb connectMode = do
        let cb' = wrap_TreeModelRowInsertedCallback cb
        cb'' <- mk_TreeModelRowInsertedCallback cb'
        connectSignalFunPtr obj "row-inserted" cb'' connectMode

type instance O.SignalList TreeModel = TreeModelSignalList
type TreeModelSignalList = ('[ '("notify", GObject.Object.ObjectNotifySignalInfo), '("rowChanged", TreeModelRowChangedSignalInfo), '("rowDeleted", TreeModelRowDeletedSignalInfo), '("rowHasChildToggled", TreeModelRowHasChildToggledSignalInfo), '("rowInserted", TreeModelRowInsertedSignalInfo)] :: [(Symbol, *)])

#endif

foreign import ccall "gtk_tree_model_get_type"
    c_gtk_tree_model_get_type :: IO GType

instance GObject TreeModel where
    gobjectType = c_gtk_tree_model_get_type
    

-- | Type class for types which can be safely cast to `TreeModel`, for instance with `toTreeModel`.
class (GObject o, O.IsDescendantOf TreeModel o) => IsTreeModel o
instance (GObject o, O.IsDescendantOf TreeModel o) => IsTreeModel o

instance O.HasParentTypes TreeModel
type instance O.ParentTypes TreeModel = '[GObject.Object.Object]

-- | Cast to `TreeModel`, for types for which this is known to be safe. For general casts, use `Data.GI.Base.ManagedPtr.castTo`.
toTreeModel :: (MonadIO m, IsTreeModel o) => o -> m TreeModel
toTreeModel = liftIO . unsafeCastTo TreeModel

#if ENABLE_OVERLOADING
instance O.HasAttributeList TreeModel
type instance O.AttributeList TreeModel = TreeModelAttributeList
type TreeModelAttributeList = ('[ ] :: [(Symbol, *)])
#endif

#if ENABLE_OVERLOADING
#endif

#if ENABLE_OVERLOADING
type family ResolveTreeModelMethod (t :: Symbol) (o :: *) :: * where
    ResolveTreeModelMethod "bindProperty" o = GObject.Object.ObjectBindPropertyMethodInfo
    ResolveTreeModelMethod "bindPropertyFull" o = GObject.Object.ObjectBindPropertyFullMethodInfo
    ResolveTreeModelMethod "filterNew" o = TreeModelFilterNewMethodInfo
    ResolveTreeModelMethod "forceFloating" o = GObject.Object.ObjectForceFloatingMethodInfo
    ResolveTreeModelMethod "foreach" o = TreeModelForeachMethodInfo
    ResolveTreeModelMethod "freezeNotify" o = GObject.Object.ObjectFreezeNotifyMethodInfo
    ResolveTreeModelMethod "getv" o = GObject.Object.ObjectGetvMethodInfo
    ResolveTreeModelMethod "isFloating" o = GObject.Object.ObjectIsFloatingMethodInfo
    ResolveTreeModelMethod "iterChildren" o = TreeModelIterChildrenMethodInfo
    ResolveTreeModelMethod "iterHasChild" o = TreeModelIterHasChildMethodInfo
    ResolveTreeModelMethod "iterNChildren" o = TreeModelIterNChildrenMethodInfo
    ResolveTreeModelMethod "iterNext" o = TreeModelIterNextMethodInfo
    ResolveTreeModelMethod "iterNthChild" o = TreeModelIterNthChildMethodInfo
    ResolveTreeModelMethod "iterParent" o = TreeModelIterParentMethodInfo
    ResolveTreeModelMethod "iterPrevious" o = TreeModelIterPreviousMethodInfo
    ResolveTreeModelMethod "notify" o = GObject.Object.ObjectNotifyMethodInfo
    ResolveTreeModelMethod "notifyByPspec" o = GObject.Object.ObjectNotifyByPspecMethodInfo
    ResolveTreeModelMethod "ref" o = GObject.Object.ObjectRefMethodInfo
    ResolveTreeModelMethod "refNode" o = TreeModelRefNodeMethodInfo
    ResolveTreeModelMethod "refSink" o = GObject.Object.ObjectRefSinkMethodInfo
    ResolveTreeModelMethod "rowChanged" o = TreeModelRowChangedMethodInfo
    ResolveTreeModelMethod "rowDeleted" o = TreeModelRowDeletedMethodInfo
    ResolveTreeModelMethod "rowHasChildToggled" o = TreeModelRowHasChildToggledMethodInfo
    ResolveTreeModelMethod "rowInserted" o = TreeModelRowInsertedMethodInfo
    ResolveTreeModelMethod "rowsReordered" o = TreeModelRowsReorderedMethodInfo
    ResolveTreeModelMethod "runDispose" o = GObject.Object.ObjectRunDisposeMethodInfo
    ResolveTreeModelMethod "sortNewWithModel" o = TreeModelSortNewWithModelMethodInfo
    ResolveTreeModelMethod "stealData" o = GObject.Object.ObjectStealDataMethodInfo
    ResolveTreeModelMethod "stealQdata" o = GObject.Object.ObjectStealQdataMethodInfo
    ResolveTreeModelMethod "thawNotify" o = GObject.Object.ObjectThawNotifyMethodInfo
    ResolveTreeModelMethod "unref" o = GObject.Object.ObjectUnrefMethodInfo
    ResolveTreeModelMethod "unrefNode" o = TreeModelUnrefNodeMethodInfo
    ResolveTreeModelMethod "watchClosure" o = GObject.Object.ObjectWatchClosureMethodInfo
    ResolveTreeModelMethod "getColumnType" o = TreeModelGetColumnTypeMethodInfo
    ResolveTreeModelMethod "getData" o = GObject.Object.ObjectGetDataMethodInfo
    ResolveTreeModelMethod "getFlags" o = TreeModelGetFlagsMethodInfo
    ResolveTreeModelMethod "getIter" o = TreeModelGetIterMethodInfo
    ResolveTreeModelMethod "getIterFirst" o = TreeModelGetIterFirstMethodInfo
    ResolveTreeModelMethod "getIterFromString" o = TreeModelGetIterFromStringMethodInfo
    ResolveTreeModelMethod "getNColumns" o = TreeModelGetNColumnsMethodInfo
    ResolveTreeModelMethod "getPath" o = TreeModelGetPathMethodInfo
    ResolveTreeModelMethod "getProperty" o = GObject.Object.ObjectGetPropertyMethodInfo
    ResolveTreeModelMethod "getQdata" o = GObject.Object.ObjectGetQdataMethodInfo
    ResolveTreeModelMethod "getStringFromIter" o = TreeModelGetStringFromIterMethodInfo
    ResolveTreeModelMethod "getValue" o = TreeModelGetValueMethodInfo
    ResolveTreeModelMethod "setData" o = GObject.Object.ObjectSetDataMethodInfo
    ResolveTreeModelMethod "setProperty" o = GObject.Object.ObjectSetPropertyMethodInfo
    ResolveTreeModelMethod l o = O.MethodResolutionFailed l o

instance (info ~ ResolveTreeModelMethod t TreeModel, O.MethodInfo info TreeModel p) => OL.IsLabel t (TreeModel -> p) where
#if MIN_VERSION_base(4,10,0)
    fromLabel = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)
#else
    fromLabel _ = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)
#endif

#endif

-- method TreeModel::filter_new
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "child_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "A #GtkTreeModel.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "root", argType = TInterface (Name {namespace = "Gtk", name = "TreePath"}), direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "A #GtkTreePath or %NULL.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "Gtk", name = "TreeModel"}))
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_filter_new" gtk_tree_model_filter_new :: 
    Ptr TreeModel ->                        -- child_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreePath.TreePath ->            -- root : TInterface (Name {namespace = "Gtk", name = "TreePath"})
    IO (Ptr TreeModel)

{- |
Creates a new 'GI.Gtk.Interfaces.TreeModel.TreeModel', with /@childModel@/ as the child_model
and /@root@/ as the virtual root.

/Since: 2.4/
-}
treeModelFilterNew ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@childModel@/: A 'GI.Gtk.Interfaces.TreeModel.TreeModel'. -}
    -> Maybe (Gtk.TreePath.TreePath)
    {- ^ /@root@/: A 'GI.Gtk.Structs.TreePath.TreePath' or 'Nothing'. -}
    -> m TreeModel
    {- ^ __Returns:__ A new 'GI.Gtk.Interfaces.TreeModel.TreeModel'. -}
treeModelFilterNew childModel root = liftIO $ do
    childModel' <- unsafeManagedPtrCastPtr childModel
    maybeRoot <- case root of
        Nothing -> return nullPtr
        Just jRoot -> do
            jRoot' <- unsafeManagedPtrGetPtr jRoot
            return jRoot'
    result <- gtk_tree_model_filter_new childModel' maybeRoot
    checkUnexpectedReturnNULL "treeModelFilterNew" result
    result' <- (wrapObject TreeModel) result
    touchManagedPtr childModel
    whenJust root touchManagedPtr
    return result'

#if ENABLE_OVERLOADING
data TreeModelFilterNewMethodInfo
instance (signature ~ (Maybe (Gtk.TreePath.TreePath) -> m TreeModel), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelFilterNewMethodInfo a signature where
    overloadedMethod _ = treeModelFilterNew

#endif

-- method TreeModel::foreach
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "func", argType = TInterface (Name {namespace = "Gtk", name = "TreeModelForeachFunc"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a function to be called on each row", sinceVersion = Nothing}, argScope = ScopeTypeCall, argClosure = 2, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "user_data", argType = TBasicType TPtr, direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "user data to passed to @func", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_foreach" gtk_tree_model_foreach :: 
    Ptr TreeModel ->                        -- model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    FunPtr Gtk.Callbacks.C_TreeModelForeachFunc -> -- func : TInterface (Name {namespace = "Gtk", name = "TreeModelForeachFunc"})
    Ptr () ->                               -- user_data : TBasicType TPtr
    IO ()

{- |
Calls func on each node in model in a depth-first fashion.

If /@func@/ returns 'True', then the tree ceases to be walked,
and 'GI.Gtk.Interfaces.TreeModel.treeModelForeach' returns.
-}
treeModelForeach ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@model@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.Callbacks.TreeModelForeachFunc
    {- ^ /@func@/: a function to be called on each row -}
    -> m ()
treeModelForeach model func = liftIO $ do
    model' <- unsafeManagedPtrCastPtr model
    func' <- Gtk.Callbacks.mk_TreeModelForeachFunc (Gtk.Callbacks.wrap_TreeModelForeachFunc Nothing (Gtk.Callbacks.drop_closures_TreeModelForeachFunc func))
    let userData = nullPtr
    gtk_tree_model_foreach model' func' userData
    safeFreeFunPtr $ castFunPtrToPtr func'
    touchManagedPtr model
    return ()

#if ENABLE_OVERLOADING
data TreeModelForeachMethodInfo
instance (signature ~ (Gtk.Callbacks.TreeModelForeachFunc -> m ()), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelForeachMethodInfo a signature where
    overloadedMethod _ = treeModelForeach

#endif

-- method TreeModel::get_column_type
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "index_", argType = TBasicType TInt, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the column index", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TGType)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_get_column_type" gtk_tree_model_get_column_type :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Int32 ->                                -- index_ : TBasicType TInt
    IO CGType

{- |
Returns the type of the column.
-}
treeModelGetColumnType ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Int32
    {- ^ /@index_@/: the column index -}
    -> m GType
    {- ^ __Returns:__ the type of the column -}
treeModelGetColumnType treeModel index_ = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    result <- gtk_tree_model_get_column_type treeModel' index_
    let result' = GType result
    touchManagedPtr treeModel
    return result'

#if ENABLE_OVERLOADING
data TreeModelGetColumnTypeMethodInfo
instance (signature ~ (Int32 -> m GType), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelGetColumnTypeMethodInfo a signature where
    overloadedMethod _ = treeModelGetColumnType

#endif

-- method TreeModel::get_flags
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "Gtk", name = "TreeModelFlags"}))
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_get_flags" gtk_tree_model_get_flags :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    IO CUInt

{- |
Returns a set of flags supported by this interface.

The flags are a bitwise combination of 'GI.Gtk.Flags.TreeModelFlags'.
The flags supported should not change during the lifetime
of the /@treeModel@/.
-}
treeModelGetFlags ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> m [Gtk.Flags.TreeModelFlags]
    {- ^ __Returns:__ the flags supported by this interface -}
treeModelGetFlags treeModel = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    result <- gtk_tree_model_get_flags treeModel'
    let result' = wordToGFlags result
    touchManagedPtr treeModel
    return result'

#if ENABLE_OVERLOADING
data TreeModelGetFlagsMethodInfo
instance (signature ~ (m [Gtk.Flags.TreeModelFlags]), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelGetFlagsMethodInfo a signature where
    overloadedMethod _ = treeModelGetFlags

#endif

-- method TreeModel::get_iter
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionOut, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the uninitialized #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = True, transfer = TransferNothing},Arg {argCName = "path", argType = TInterface (Name {namespace = "Gtk", name = "TreePath"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GtkTreePath-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TBoolean)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_get_iter" gtk_tree_model_get_iter :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    Ptr Gtk.TreePath.TreePath ->            -- path : TInterface (Name {namespace = "Gtk", name = "TreePath"})
    IO CInt

{- |
Sets /@iter@/ to a valid iterator pointing to /@path@/.  If /@path@/ does
not exist, /@iter@/ is set to an invalid iterator and 'False' is returned.
-}
treeModelGetIter ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreePath.TreePath
    {- ^ /@path@/: the 'GI.Gtk.Structs.TreePath.TreePath'-struct -}
    -> m ((Bool, Gtk.TreeIter.TreeIter))
    {- ^ __Returns:__ 'True', if /@iter@/ was set -}
treeModelGetIter treeModel path = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter <- callocBoxedBytes 32 :: IO (Ptr Gtk.TreeIter.TreeIter)
    path' <- unsafeManagedPtrGetPtr path
    result <- gtk_tree_model_get_iter treeModel' iter path'
    let result' = (/= 0) result
    iter' <- (wrapBoxed Gtk.TreeIter.TreeIter) iter
    touchManagedPtr treeModel
    touchManagedPtr path
    return (result', iter')

#if ENABLE_OVERLOADING
data TreeModelGetIterMethodInfo
instance (signature ~ (Gtk.TreePath.TreePath -> m ((Bool, Gtk.TreeIter.TreeIter))), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelGetIterMethodInfo a signature where
    overloadedMethod _ = treeModelGetIter

#endif

-- method TreeModel::get_iter_first
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionOut, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the uninitialized #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = True, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TBoolean)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_get_iter_first" gtk_tree_model_get_iter_first :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO CInt

{- |
Initializes /@iter@/ with the first iterator in the tree
(the one at the path \"0\") and returns 'True'. Returns
'False' if the tree is empty.
-}
treeModelGetIterFirst ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> m ((Bool, Gtk.TreeIter.TreeIter))
    {- ^ __Returns:__ 'True', if /@iter@/ was set -}
treeModelGetIterFirst treeModel = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter <- callocBoxedBytes 32 :: IO (Ptr Gtk.TreeIter.TreeIter)
    result <- gtk_tree_model_get_iter_first treeModel' iter
    let result' = (/= 0) result
    iter' <- (wrapBoxed Gtk.TreeIter.TreeIter) iter
    touchManagedPtr treeModel
    return (result', iter')

#if ENABLE_OVERLOADING
data TreeModelGetIterFirstMethodInfo
instance (signature ~ (m ((Bool, Gtk.TreeIter.TreeIter))), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelGetIterFirstMethodInfo a signature where
    overloadedMethod _ = treeModelGetIterFirst

#endif

-- method TreeModel::get_iter_from_string
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionOut, mayBeNull = False, argDoc = Documentation {rawDocText = Just "an uninitialized #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = True, transfer = TransferNothing},Arg {argCName = "path_string", argType = TBasicType TUTF8, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a string representation of a #GtkTreePath-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TBoolean)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_get_iter_from_string" gtk_tree_model_get_iter_from_string :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    CString ->                              -- path_string : TBasicType TUTF8
    IO CInt

{- |
Sets /@iter@/ to a valid iterator pointing to /@pathString@/, if it
exists. Otherwise, /@iter@/ is left invalid and 'False' is returned.
-}
treeModelGetIterFromString ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> T.Text
    {- ^ /@pathString@/: a string representation of a 'GI.Gtk.Structs.TreePath.TreePath'-struct -}
    -> m ((Bool, Gtk.TreeIter.TreeIter))
    {- ^ __Returns:__ 'True', if /@iter@/ was set -}
treeModelGetIterFromString treeModel pathString = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter <- callocBoxedBytes 32 :: IO (Ptr Gtk.TreeIter.TreeIter)
    pathString' <- textToCString pathString
    result <- gtk_tree_model_get_iter_from_string treeModel' iter pathString'
    let result' = (/= 0) result
    iter' <- (wrapBoxed Gtk.TreeIter.TreeIter) iter
    touchManagedPtr treeModel
    freeMem pathString'
    return (result', iter')

#if ENABLE_OVERLOADING
data TreeModelGetIterFromStringMethodInfo
instance (signature ~ (T.Text -> m ((Bool, Gtk.TreeIter.TreeIter))), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelGetIterFromStringMethodInfo a signature where
    overloadedMethod _ = treeModelGetIterFromString

#endif

-- method TreeModel::get_n_columns
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TInt)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_get_n_columns" gtk_tree_model_get_n_columns :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    IO Int32

{- |
Returns the number of columns supported by /@treeModel@/.
-}
treeModelGetNColumns ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> m Int32
    {- ^ __Returns:__ the number of columns -}
treeModelGetNColumns treeModel = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    result <- gtk_tree_model_get_n_columns treeModel'
    touchManagedPtr treeModel
    return result

#if ENABLE_OVERLOADING
data TreeModelGetNColumnsMethodInfo
instance (signature ~ (m Int32), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelGetNColumnsMethodInfo a signature where
    overloadedMethod _ = treeModelGetNColumns

#endif

-- method TreeModel::get_path
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "Gtk", name = "TreePath"}))
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_get_path" gtk_tree_model_get_path :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO (Ptr Gtk.TreePath.TreePath)

{- |
Returns a newly-created 'GI.Gtk.Structs.TreePath.TreePath'-struct referenced by /@iter@/.

This path should be freed with 'GI.Gtk.Structs.TreePath.treePathFree'.
-}
treeModelGetPath ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct -}
    -> m Gtk.TreePath.TreePath
    {- ^ __Returns:__ a newly-created 'GI.Gtk.Structs.TreePath.TreePath'-struct -}
treeModelGetPath treeModel iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter' <- unsafeManagedPtrGetPtr iter
    result <- gtk_tree_model_get_path treeModel' iter'
    checkUnexpectedReturnNULL "treeModelGetPath" result
    result' <- (wrapBoxed Gtk.TreePath.TreePath) result
    touchManagedPtr treeModel
    touchManagedPtr iter
    return result'

#if ENABLE_OVERLOADING
data TreeModelGetPathMethodInfo
instance (signature ~ (Gtk.TreeIter.TreeIter -> m Gtk.TreePath.TreePath), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelGetPathMethodInfo a signature where
    overloadedMethod _ = treeModelGetPath

#endif

-- method TreeModel::get_string_from_iter
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TUTF8)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_get_string_from_iter" gtk_tree_model_get_string_from_iter :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO CString

{- |
Generates a string representation of the iter.

This string is a “:” separated list of numbers.
For example, “4:10:0:3” would be an acceptable
return value for this string.

/Since: 2.2/
-}
treeModelGetStringFromIter ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: a 'GI.Gtk.Structs.TreeIter.TreeIter'-struct -}
    -> m T.Text
    {- ^ __Returns:__ a newly-allocated string.
    Must be freed with 'GI.GLib.Functions.free'. -}
treeModelGetStringFromIter treeModel iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter' <- unsafeManagedPtrGetPtr iter
    result <- gtk_tree_model_get_string_from_iter treeModel' iter'
    checkUnexpectedReturnNULL "treeModelGetStringFromIter" result
    result' <- cstringToText result
    freeMem result
    touchManagedPtr treeModel
    touchManagedPtr iter
    return result'

#if ENABLE_OVERLOADING
data TreeModelGetStringFromIterMethodInfo
instance (signature ~ (Gtk.TreeIter.TreeIter -> m T.Text), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelGetStringFromIterMethodInfo a signature where
    overloadedMethod _ = treeModelGetStringFromIter

#endif

-- method TreeModel::get_value
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "column", argType = TBasicType TInt, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the column to lookup the value at", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "value", argType = TInterface (Name {namespace = "GObject", name = "Value"}), direction = DirectionOut, mayBeNull = False, argDoc = Documentation {rawDocText = Just "an empty #GValue to set", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = True, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_get_value" gtk_tree_model_get_value :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    Int32 ->                                -- column : TBasicType TInt
    Ptr GValue ->                           -- value : TInterface (Name {namespace = "GObject", name = "Value"})
    IO ()

{- |
Initializes and sets /@value@/ to that at /@column@/.

When done with /@value@/, 'GI.GObject.Structs.Value.valueUnset' needs to be called
to free any allocated memory.
-}
treeModelGetValue ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct -}
    -> Int32
    {- ^ /@column@/: the column to lookup the value at -}
    -> m (GValue)
treeModelGetValue treeModel iter column = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter' <- unsafeManagedPtrGetPtr iter
    value <- callocBoxedBytes 24 :: IO (Ptr GValue)
    gtk_tree_model_get_value treeModel' iter' column value
    value' <- (wrapBoxed GValue) value
    touchManagedPtr treeModel
    touchManagedPtr iter
    return value'

#if ENABLE_OVERLOADING
data TreeModelGetValueMethodInfo
instance (signature ~ (Gtk.TreeIter.TreeIter -> Int32 -> m (GValue)), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelGetValueMethodInfo a signature where
    overloadedMethod _ = treeModelGetValue

#endif

-- method TreeModel::iter_children
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionOut, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the new #GtkTreeIter-struct to be set to the child", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = True, transfer = TransferNothing},Arg {argCName = "parent", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct, or %NULL", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TBoolean)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_iter_children" gtk_tree_model_iter_children :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    Ptr Gtk.TreeIter.TreeIter ->            -- parent : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO CInt

{- |
Sets /@iter@/ to point to the first child of /@parent@/.

If /@parent@/ has no children, 'False' is returned and /@iter@/ is
set to be invalid. /@parent@/ will remain a valid node after this
function has been called.

If /@parent@/ is 'Nothing' returns the first node, equivalent to
@gtk_tree_model_get_iter_first (tree_model, iter);@
-}
treeModelIterChildren ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Maybe (Gtk.TreeIter.TreeIter)
    {- ^ /@parent@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct, or 'Nothing' -}
    -> m ((Bool, Gtk.TreeIter.TreeIter))
    {- ^ __Returns:__ 'True', if /@iter@/ has been set to the first child -}
treeModelIterChildren treeModel parent = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter <- callocBoxedBytes 32 :: IO (Ptr Gtk.TreeIter.TreeIter)
    maybeParent <- case parent of
        Nothing -> return nullPtr
        Just jParent -> do
            jParent' <- unsafeManagedPtrGetPtr jParent
            return jParent'
    result <- gtk_tree_model_iter_children treeModel' iter maybeParent
    let result' = (/= 0) result
    iter' <- (wrapBoxed Gtk.TreeIter.TreeIter) iter
    touchManagedPtr treeModel
    whenJust parent touchManagedPtr
    return (result', iter')

#if ENABLE_OVERLOADING
data TreeModelIterChildrenMethodInfo
instance (signature ~ (Maybe (Gtk.TreeIter.TreeIter) -> m ((Bool, Gtk.TreeIter.TreeIter))), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelIterChildrenMethodInfo a signature where
    overloadedMethod _ = treeModelIterChildren

#endif

-- method TreeModel::iter_has_child
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct to test for children", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TBoolean)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_iter_has_child" gtk_tree_model_iter_has_child :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO CInt

{- |
Returns 'True' if /@iter@/ has children, 'False' otherwise.
-}
treeModelIterHasChild ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct to test for children -}
    -> m Bool
    {- ^ __Returns:__ 'True' if /@iter@/ has children -}
treeModelIterHasChild treeModel iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter' <- unsafeManagedPtrGetPtr iter
    result <- gtk_tree_model_iter_has_child treeModel' iter'
    let result' = (/= 0) result
    touchManagedPtr treeModel
    touchManagedPtr iter
    return result'

#if ENABLE_OVERLOADING
data TreeModelIterHasChildMethodInfo
instance (signature ~ (Gtk.TreeIter.TreeIter -> m Bool), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelIterHasChildMethodInfo a signature where
    overloadedMethod _ = treeModelIterHasChild

#endif

-- method TreeModel::iter_n_children
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct, or %NULL", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TInt)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_iter_n_children" gtk_tree_model_iter_n_children :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO Int32

{- |
Returns the number of children that /@iter@/ has.

As a special case, if /@iter@/ is 'Nothing', then the number
of toplevel nodes is returned.
-}
treeModelIterNChildren ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Maybe (Gtk.TreeIter.TreeIter)
    {- ^ /@iter@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct, or 'Nothing' -}
    -> m Int32
    {- ^ __Returns:__ the number of children of /@iter@/ -}
treeModelIterNChildren treeModel iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    maybeIter <- case iter of
        Nothing -> return nullPtr
        Just jIter -> do
            jIter' <- unsafeManagedPtrGetPtr jIter
            return jIter'
    result <- gtk_tree_model_iter_n_children treeModel' maybeIter
    touchManagedPtr treeModel
    whenJust iter touchManagedPtr
    return result

#if ENABLE_OVERLOADING
data TreeModelIterNChildrenMethodInfo
instance (signature ~ (Maybe (Gtk.TreeIter.TreeIter) -> m Int32), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelIterNChildrenMethodInfo a signature where
    overloadedMethod _ = treeModelIterNChildren

#endif

-- method TreeModel::iter_next
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TBoolean)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_iter_next" gtk_tree_model_iter_next :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO CInt

{- |
Sets /@iter@/ to point to the node following it at the current level.

If there is no next /@iter@/, 'False' is returned and /@iter@/ is set
to be invalid.
-}
treeModelIterNext ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct -}
    -> m Bool
    {- ^ __Returns:__ 'True' if /@iter@/ has been changed to the next node -}
treeModelIterNext treeModel iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter' <- unsafeManagedPtrGetPtr iter
    result <- gtk_tree_model_iter_next treeModel' iter'
    let result' = (/= 0) result
    touchManagedPtr treeModel
    touchManagedPtr iter
    return result'

#if ENABLE_OVERLOADING
data TreeModelIterNextMethodInfo
instance (signature ~ (Gtk.TreeIter.TreeIter -> m Bool), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelIterNextMethodInfo a signature where
    overloadedMethod _ = treeModelIterNext

#endif

-- method TreeModel::iter_nth_child
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionOut, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct to set to the nth child", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = True, transfer = TransferNothing},Arg {argCName = "parent", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct to get the child from, or %NULL.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "n", argType = TBasicType TInt, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the index of the desired child", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TBoolean)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_iter_nth_child" gtk_tree_model_iter_nth_child :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    Ptr Gtk.TreeIter.TreeIter ->            -- parent : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    Int32 ->                                -- n : TBasicType TInt
    IO CInt

{- |
Sets /@iter@/ to be the child of /@parent@/, using the given index.

The first index is 0. If /@n@/ is too big, or /@parent@/ has no children,
/@iter@/ is set to an invalid iterator and 'False' is returned. /@parent@/
will remain a valid node after this function has been called. As a
special case, if /@parent@/ is 'Nothing', then the /@n@/-th root node
is set.
-}
treeModelIterNthChild ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Maybe (Gtk.TreeIter.TreeIter)
    {- ^ /@parent@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct to get the child from, or 'Nothing'. -}
    -> Int32
    {- ^ /@n@/: the index of the desired child -}
    -> m ((Bool, Gtk.TreeIter.TreeIter))
    {- ^ __Returns:__ 'True', if /@parent@/ has an /@n@/-th child -}
treeModelIterNthChild treeModel parent n = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter <- callocBoxedBytes 32 :: IO (Ptr Gtk.TreeIter.TreeIter)
    maybeParent <- case parent of
        Nothing -> return nullPtr
        Just jParent -> do
            jParent' <- unsafeManagedPtrGetPtr jParent
            return jParent'
    result <- gtk_tree_model_iter_nth_child treeModel' iter maybeParent n
    let result' = (/= 0) result
    iter' <- (wrapBoxed Gtk.TreeIter.TreeIter) iter
    touchManagedPtr treeModel
    whenJust parent touchManagedPtr
    return (result', iter')

#if ENABLE_OVERLOADING
data TreeModelIterNthChildMethodInfo
instance (signature ~ (Maybe (Gtk.TreeIter.TreeIter) -> Int32 -> m ((Bool, Gtk.TreeIter.TreeIter))), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelIterNthChildMethodInfo a signature where
    overloadedMethod _ = treeModelIterNthChild

#endif

-- method TreeModel::iter_parent
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionOut, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the new #GtkTreeIter-struct to set to the parent", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = True, transfer = TransferNothing},Arg {argCName = "child", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TBoolean)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_iter_parent" gtk_tree_model_iter_parent :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    Ptr Gtk.TreeIter.TreeIter ->            -- child : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO CInt

{- |
Sets /@iter@/ to be the parent of /@child@/.

If /@child@/ is at the toplevel, and doesn’t have a parent, then
/@iter@/ is set to an invalid iterator and 'False' is returned.
/@child@/ will remain a valid node after this function has been
called.

/@iter@/ will be initialized before the lookup is performed, so /@child@/
and /@iter@/ cannot point to the same memory location.
-}
treeModelIterParent ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@child@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct -}
    -> m ((Bool, Gtk.TreeIter.TreeIter))
    {- ^ __Returns:__ 'True', if /@iter@/ is set to the parent of /@child@/ -}
treeModelIterParent treeModel child = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter <- callocBoxedBytes 32 :: IO (Ptr Gtk.TreeIter.TreeIter)
    child' <- unsafeManagedPtrGetPtr child
    result <- gtk_tree_model_iter_parent treeModel' iter child'
    let result' = (/= 0) result
    iter' <- (wrapBoxed Gtk.TreeIter.TreeIter) iter
    touchManagedPtr treeModel
    touchManagedPtr child
    return (result', iter')

#if ENABLE_OVERLOADING
data TreeModelIterParentMethodInfo
instance (signature ~ (Gtk.TreeIter.TreeIter -> m ((Bool, Gtk.TreeIter.TreeIter))), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelIterParentMethodInfo a signature where
    overloadedMethod _ = treeModelIterParent

#endif

-- method TreeModel::iter_previous
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TBoolean)
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_iter_previous" gtk_tree_model_iter_previous :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO CInt

{- |
Sets /@iter@/ to point to the previous node at the current level.

If there is no previous /@iter@/, 'False' is returned and /@iter@/ is
set to be invalid.

/Since: 3.0/
-}
treeModelIterPrevious ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct -}
    -> m Bool
    {- ^ __Returns:__ 'True' if /@iter@/ has been changed to the previous node -}
treeModelIterPrevious treeModel iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter' <- unsafeManagedPtrGetPtr iter
    result <- gtk_tree_model_iter_previous treeModel' iter'
    let result' = (/= 0) result
    touchManagedPtr treeModel
    touchManagedPtr iter
    return result'

#if ENABLE_OVERLOADING
data TreeModelIterPreviousMethodInfo
instance (signature ~ (Gtk.TreeIter.TreeIter -> m Bool), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelIterPreviousMethodInfo a signature where
    overloadedMethod _ = treeModelIterPrevious

#endif

-- method TreeModel::ref_node
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_ref_node" gtk_tree_model_ref_node :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO ()

{- |
Lets the tree ref the node.

This is an optional method for models to implement.
To be more specific, models may ignore this call as it exists
primarily for performance reasons.

This function is primarily meant as a way for views to let
caching models know when nodes are being displayed (and hence,
whether or not to cache that node). Being displayed means a node
is in an expanded branch, regardless of whether the node is currently
visible in the viewport. For example, a file-system based model
would not want to keep the entire file-hierarchy in memory,
just the sections that are currently being displayed by
every current view.

A model should be expected to be able to get an iter independent
of its reffed state.
-}
treeModelRefNode ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct -}
    -> m ()
treeModelRefNode treeModel iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter' <- unsafeManagedPtrGetPtr iter
    gtk_tree_model_ref_node treeModel' iter'
    touchManagedPtr treeModel
    touchManagedPtr iter
    return ()

#if ENABLE_OVERLOADING
data TreeModelRefNodeMethodInfo
instance (signature ~ (Gtk.TreeIter.TreeIter -> m ()), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelRefNodeMethodInfo a signature where
    overloadedMethod _ = treeModelRefNode

#endif

-- method TreeModel::row_changed
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "path", argType = TInterface (Name {namespace = "Gtk", name = "TreePath"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreePath-struct pointing to the changed row", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a valid #GtkTreeIter-struct pointing to the changed row", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_row_changed" gtk_tree_model_row_changed :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreePath.TreePath ->            -- path : TInterface (Name {namespace = "Gtk", name = "TreePath"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO ()

{- |
Emits the 'GI.Gtk.Interfaces.TreeModel.TreeModel'::@/row-changed/@ signal on /@treeModel@/.
-}
treeModelRowChanged ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreePath.TreePath
    {- ^ /@path@/: a 'GI.Gtk.Structs.TreePath.TreePath'-struct pointing to the changed row -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: a valid 'GI.Gtk.Structs.TreeIter.TreeIter'-struct pointing to the changed row -}
    -> m ()
treeModelRowChanged treeModel path iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    path' <- unsafeManagedPtrGetPtr path
    iter' <- unsafeManagedPtrGetPtr iter
    gtk_tree_model_row_changed treeModel' path' iter'
    touchManagedPtr treeModel
    touchManagedPtr path
    touchManagedPtr iter
    return ()

#if ENABLE_OVERLOADING
data TreeModelRowChangedMethodInfo
instance (signature ~ (Gtk.TreePath.TreePath -> Gtk.TreeIter.TreeIter -> m ()), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelRowChangedMethodInfo a signature where
    overloadedMethod _ = treeModelRowChanged

#endif

-- method TreeModel::row_deleted
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "path", argType = TInterface (Name {namespace = "Gtk", name = "TreePath"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreePath-struct pointing to the previous location of\n    the deleted row", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_row_deleted" gtk_tree_model_row_deleted :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreePath.TreePath ->            -- path : TInterface (Name {namespace = "Gtk", name = "TreePath"})
    IO ()

{- |
Emits the 'GI.Gtk.Interfaces.TreeModel.TreeModel'::@/row-deleted/@ signal on /@treeModel@/.

This should be called by models after a row has been removed.
The location pointed to by /@path@/ should be the location that
the row previously was at. It may not be a valid location anymore.

Nodes that are deleted are not unreffed, this means that any
outstanding references on the deleted node should not be released.
-}
treeModelRowDeleted ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreePath.TreePath
    {- ^ /@path@/: a 'GI.Gtk.Structs.TreePath.TreePath'-struct pointing to the previous location of
    the deleted row -}
    -> m ()
treeModelRowDeleted treeModel path = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    path' <- unsafeManagedPtrGetPtr path
    gtk_tree_model_row_deleted treeModel' path'
    touchManagedPtr treeModel
    touchManagedPtr path
    return ()

#if ENABLE_OVERLOADING
data TreeModelRowDeletedMethodInfo
instance (signature ~ (Gtk.TreePath.TreePath -> m ()), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelRowDeletedMethodInfo a signature where
    overloadedMethod _ = treeModelRowDeleted

#endif

-- method TreeModel::row_has_child_toggled
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "path", argType = TInterface (Name {namespace = "Gtk", name = "TreePath"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreePath-struct pointing to the changed row", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a valid #GtkTreeIter-struct pointing to the changed row", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_row_has_child_toggled" gtk_tree_model_row_has_child_toggled :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreePath.TreePath ->            -- path : TInterface (Name {namespace = "Gtk", name = "TreePath"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO ()

{- |
Emits the 'GI.Gtk.Interfaces.TreeModel.TreeModel'::@/row-has-child-toggled/@ signal on
/@treeModel@/. This should be called by models after the child
state of a node changes.
-}
treeModelRowHasChildToggled ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreePath.TreePath
    {- ^ /@path@/: a 'GI.Gtk.Structs.TreePath.TreePath'-struct pointing to the changed row -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: a valid 'GI.Gtk.Structs.TreeIter.TreeIter'-struct pointing to the changed row -}
    -> m ()
treeModelRowHasChildToggled treeModel path iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    path' <- unsafeManagedPtrGetPtr path
    iter' <- unsafeManagedPtrGetPtr iter
    gtk_tree_model_row_has_child_toggled treeModel' path' iter'
    touchManagedPtr treeModel
    touchManagedPtr path
    touchManagedPtr iter
    return ()

#if ENABLE_OVERLOADING
data TreeModelRowHasChildToggledMethodInfo
instance (signature ~ (Gtk.TreePath.TreePath -> Gtk.TreeIter.TreeIter -> m ()), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelRowHasChildToggledMethodInfo a signature where
    overloadedMethod _ = treeModelRowHasChildToggled

#endif

-- method TreeModel::row_inserted
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "path", argType = TInterface (Name {namespace = "Gtk", name = "TreePath"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreePath-struct pointing to the inserted row", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a valid #GtkTreeIter-struct pointing to the inserted row", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_row_inserted" gtk_tree_model_row_inserted :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreePath.TreePath ->            -- path : TInterface (Name {namespace = "Gtk", name = "TreePath"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO ()

{- |
Emits the 'GI.Gtk.Interfaces.TreeModel.TreeModel'::@/row-inserted/@ signal on /@treeModel@/.
-}
treeModelRowInserted ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreePath.TreePath
    {- ^ /@path@/: a 'GI.Gtk.Structs.TreePath.TreePath'-struct pointing to the inserted row -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: a valid 'GI.Gtk.Structs.TreeIter.TreeIter'-struct pointing to the inserted row -}
    -> m ()
treeModelRowInserted treeModel path iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    path' <- unsafeManagedPtrGetPtr path
    iter' <- unsafeManagedPtrGetPtr iter
    gtk_tree_model_row_inserted treeModel' path' iter'
    touchManagedPtr treeModel
    touchManagedPtr path
    touchManagedPtr iter
    return ()

#if ENABLE_OVERLOADING
data TreeModelRowInsertedMethodInfo
instance (signature ~ (Gtk.TreePath.TreePath -> Gtk.TreeIter.TreeIter -> m ()), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelRowInsertedMethodInfo a signature where
    overloadedMethod _ = treeModelRowInserted

#endif

-- method TreeModel::rows_reordered
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "path", argType = TInterface (Name {namespace = "Gtk", name = "TreePath"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreePath-struct pointing to the tree node whose children\n    have been reordered", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = True, argDoc = Documentation {rawDocText = Just "a valid #GtkTreeIter-struct pointing to the node\n    whose children have been reordered, or %NULL if the depth\n    of @path is 0", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "new_order", argType = TCArray False (-1) 4 (TBasicType TInt), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "an array of integers\n    mapping the current position of each child to its old\n    position before the re-ordering,\n    i.e. @new_order`[newpos] = oldpos`", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "length", argType = TBasicType TInt, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "length of @new_order array", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : [Arg {argCName = "length", argType = TBasicType TInt, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "length of @new_order array", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_rows_reordered_with_length" gtk_tree_model_rows_reordered_with_length :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreePath.TreePath ->            -- path : TInterface (Name {namespace = "Gtk", name = "TreePath"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    Ptr Int32 ->                            -- new_order : TCArray False (-1) 4 (TBasicType TInt)
    Int32 ->                                -- length : TBasicType TInt
    IO ()

{- |
Emits the 'GI.Gtk.Interfaces.TreeModel.TreeModel'::@/rows-reordered/@ signal on /@treeModel@/.

This should be called by models when their rows have been
reordered.

/Since: 3.10/
-}
treeModelRowsReordered ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreePath.TreePath
    {- ^ /@path@/: a 'GI.Gtk.Structs.TreePath.TreePath'-struct pointing to the tree node whose children
    have been reordered -}
    -> Maybe (Gtk.TreeIter.TreeIter)
    {- ^ /@iter@/: a valid 'GI.Gtk.Structs.TreeIter.TreeIter'-struct pointing to the node
    whose children have been reordered, or 'Nothing' if the depth
    of /@path@/ is 0 -}
    -> [Int32]
    {- ^ /@newOrder@/: an array of integers
    mapping the current position of each child to its old
    position before the re-ordering,
    i.e. /@newOrder@/@[newpos] = oldpos@ -}
    -> m ()
treeModelRowsReordered treeModel path iter newOrder = liftIO $ do
    let length_ = fromIntegral $ length newOrder
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    path' <- unsafeManagedPtrGetPtr path
    maybeIter <- case iter of
        Nothing -> return nullPtr
        Just jIter -> do
            jIter' <- unsafeManagedPtrGetPtr jIter
            return jIter'
    newOrder' <- packStorableArray newOrder
    gtk_tree_model_rows_reordered_with_length treeModel' path' maybeIter newOrder' length_
    touchManagedPtr treeModel
    touchManagedPtr path
    whenJust iter touchManagedPtr
    freeMem newOrder'
    return ()

#if ENABLE_OVERLOADING
data TreeModelRowsReorderedMethodInfo
instance (signature ~ (Gtk.TreePath.TreePath -> Maybe (Gtk.TreeIter.TreeIter) -> [Int32] -> m ()), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelRowsReorderedMethodInfo a signature where
    overloadedMethod _ = treeModelRowsReordered

#endif

-- method TreeModel::sort_new_with_model
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "child_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "A #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TInterface (Name {namespace = "Gtk", name = "TreeModel"}))
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_sort_new_with_model" gtk_tree_model_sort_new_with_model :: 
    Ptr TreeModel ->                        -- child_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    IO (Ptr TreeModel)

{- |
Creates a new 'GI.Gtk.Interfaces.TreeModel.TreeModel', with /@childModel@/ as the child model.
-}
treeModelSortNewWithModel ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@childModel@/: A 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> m TreeModel
    {- ^ __Returns:__ A new 'GI.Gtk.Interfaces.TreeModel.TreeModel'. -}
treeModelSortNewWithModel childModel = liftIO $ do
    childModel' <- unsafeManagedPtrCastPtr childModel
    result <- gtk_tree_model_sort_new_with_model childModel'
    checkUnexpectedReturnNULL "treeModelSortNewWithModel" result
    result' <- (wrapObject TreeModel) result
    touchManagedPtr childModel
    return result'

#if ENABLE_OVERLOADING
data TreeModelSortNewWithModelMethodInfo
instance (signature ~ (m TreeModel), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelSortNewWithModelMethodInfo a signature where
    overloadedMethod _ = treeModelSortNewWithModel

#endif

-- method TreeModel::unref_node
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "tree_model", argType = TInterface (Name {namespace = "Gtk", name = "TreeModel"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GtkTreeModel", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "iter", argType = TInterface (Name {namespace = "Gtk", name = "TreeIter"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "the #GtkTreeIter-struct", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "gtk_tree_model_unref_node" gtk_tree_model_unref_node :: 
    Ptr TreeModel ->                        -- tree_model : TInterface (Name {namespace = "Gtk", name = "TreeModel"})
    Ptr Gtk.TreeIter.TreeIter ->            -- iter : TInterface (Name {namespace = "Gtk", name = "TreeIter"})
    IO ()

{- |
Lets the tree unref the node.

This is an optional method for models to implement.
To be more specific, models may ignore this call as it exists
primarily for performance reasons. For more information on what
this means, see 'GI.Gtk.Interfaces.TreeModel.treeModelRefNode'.

Please note that nodes that are deleted are not unreffed.
-}
treeModelUnrefNode ::
    (B.CallStack.HasCallStack, MonadIO m, IsTreeModel a) =>
    a
    {- ^ /@treeModel@/: a 'GI.Gtk.Interfaces.TreeModel.TreeModel' -}
    -> Gtk.TreeIter.TreeIter
    {- ^ /@iter@/: the 'GI.Gtk.Structs.TreeIter.TreeIter'-struct -}
    -> m ()
treeModelUnrefNode treeModel iter = liftIO $ do
    treeModel' <- unsafeManagedPtrCastPtr treeModel
    iter' <- unsafeManagedPtrGetPtr iter
    gtk_tree_model_unref_node treeModel' iter'
    touchManagedPtr treeModel
    touchManagedPtr iter
    return ()

#if ENABLE_OVERLOADING
data TreeModelUnrefNodeMethodInfo
instance (signature ~ (Gtk.TreeIter.TreeIter -> m ()), MonadIO m, IsTreeModel a) => O.MethodInfo TreeModelUnrefNodeMethodInfo a signature where
    overloadedMethod _ = treeModelUnrefNode

#endif