Data.GI.Gtk.ModelView.TreeModel

The tree interface used by TreeView.

Detail

The TreeModel interface defines a generic storage object for use by the TreeView and similar widgets. Specifically, the functions in defined here are used by Gtk's widgets to access the stored data. Thus, rather than calling these functions, an application programmer has to implement them. While the module Data.GI.Gtk.ModelView.CustomStore provides the necessary functions to implement the TreeMode interface, it is often sufficient to use the wo implementations that come with gi-gtk-hs, namely are ListStore and TreeStore.

The model is represented as a hierarchical tree of values. 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.

Two generic models are provided that implement the TreeModel interface: the TreeStore and the ListStore. To use these, the developer simply inserts data into these models as necessary. These models provide the data structure as well as the TreeModel interface. In fact, they implement other interfaces, making drag and drop and storing data trivial.

A TreeModel stores records of the same type. Each record is referred to as row, just like in a relational database. Defining how the information of a row is displayed can be done in two ways: If the widget displays data using CellRenderer or one of its derivatives, it is possible to state how a row is mapped to the attributes of a renderer using the cellLayoutSetAttributes function. Some widgets do not use CellRenderers to display their data. In this case an extraction function can be defined that maps a row to one of a few basic types (like Strings or Ints). This extraction function is associated with a ColumnId using treeModelSetColumn. The latter can be set in the widget for the property that should be set. The widget then uses the function treeModelGetValue and the ColumnId to extract the value from the model. As the name suggests, using ColumnIds creates a view of the data as if each row were divided into a well-defined set of columns, again, like a relational database.

Models are accessed on a node level of granularity. There are two index types used to reference a particular node in a model. They are the TreePath and the TreeIter. Most of the interface consists of operations on a TreeIter.

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. A TreePath is in fact a synonym for a list of Ints and hence are easy to manipulate. 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 TreeIter is a reference to a specific node on a specific model. It is an abstract data type filled in by the model. One can convert a path to an iterator by calling treeModelGetIter. These iterators are the primary way of accessing a model and are similar to the iterators used by TextBuffer. The model interface defines a set of operations using them for navigating the model. Iterators are expected to always be valid for as long as the model is unchanged (and doesn't emit a signal).

Class Hierarchy

|  GInterface
|   +----TreeModel
|   +--------TypedTreeModel

afterTreeModelRowChanged :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowChangedCallback -> m SignalHandlerId

afterTreeModelRowDeleted :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowDeletedCallback -> m SignalHandlerId

afterTreeModelRowHasChildToggled :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowHasChildToggledCallback -> m SignalHandlerId

afterTreeModelRowInserted :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowInsertedCallback -> m SignalHandlerId

genClosure_TreeModelRowChanged :: TreeModelRowChangedCallback -> IO Closure

genClosure_TreeModelRowDeleted :: TreeModelRowDeletedCallback -> IO Closure

genClosure_TreeModelRowHasChildToggled :: TreeModelRowHasChildToggledCallback -> IO Closure

genClosure_TreeModelRowInserted :: TreeModelRowInsertedCallback -> IO Closure

mk_TreeModelRowChangedCallback :: C_TreeModelRowChangedCallback -> IO (FunPtr C_TreeModelRowChangedCallback)

mk_TreeModelRowDeletedCallback :: C_TreeModelRowDeletedCallback -> IO (FunPtr C_TreeModelRowDeletedCallback)

mk_TreeModelRowHasChildToggledCallback :: C_TreeModelRowHasChildToggledCallback -> IO (FunPtr C_TreeModelRowHasChildToggledCallback)

mk_TreeModelRowInsertedCallback :: C_TreeModelRowInsertedCallback -> IO (FunPtr C_TreeModelRowInsertedCallback)

noTreeModel :: Maybe TreeModel

noTreeModelRowChangedCallback :: Maybe TreeModelRowChangedCallback

noTreeModelRowDeletedCallback :: Maybe TreeModelRowDeletedCallback

noTreeModelRowHasChildToggledCallback :: Maybe TreeModelRowHasChildToggledCallback

noTreeModelRowInsertedCallback :: Maybe TreeModelRowInsertedCallback

onTreeModelRowChanged :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowChangedCallback -> m SignalHandlerId

onTreeModelRowDeleted :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowDeletedCallback -> m SignalHandlerId

onTreeModelRowHasChildToggled :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowHasChildToggledCallback -> m SignalHandlerId

onTreeModelRowInserted :: (IsTreeModel a, MonadIO m) => a -> TreeModelRowInsertedCallback -> m SignalHandlerId

toTreeModel :: (MonadIO m, IsTreeModel o) => o -> m TreeModel

treeModelFilterNew :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> Maybe TreePath -> m TreeModel

treeModelForeach :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreeModelForeachFunc -> m ()

treeModelGetColumnType :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> Int32 -> m GType

treeModelGetFlags :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> m [TreeModelFlags]

treeModelGetIterFirst :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> m (Bool, TreeIter)

treeModelGetIterFromString :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> Text -> m (Bool, TreeIter)

treeModelGetNColumns :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> m Int32

treeModelGetPath :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreeIter -> m TreePath

treeModelGetStringFromIter :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreeIter -> m Text

treeModelIterChildren :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> Maybe TreeIter -> m (Bool, TreeIter)

treeModelIterHasChild :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreeIter -> m Bool

treeModelIterNChildren :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> Maybe TreeIter -> m Int32

treeModelIterNext :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreeIter -> m Bool

treeModelIterNthChild :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> Maybe TreeIter -> Int32 -> m (Bool, TreeIter)

treeModelIterParent :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreeIter -> m (Bool, TreeIter)

treeModelIterPrevious :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreeIter -> m Bool

treeModelRefNode :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreeIter -> m ()

treeModelRowChanged :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreePath -> TreeIter -> m ()

treeModelRowDeleted :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreePath -> m ()

treeModelRowHasChildToggled :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreePath -> TreeIter -> m ()

treeModelRowInserted :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreePath -> TreeIter -> m ()

treeModelRowsReordered :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreePath -> Maybe TreeIter -> [Int32] -> m ()

treeModelSortNewWithModel :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> m TreeModel

treeModelUnrefNode :: (HasCallStack, MonadIO m, IsTreeModel a) => a -> TreeIter -> m ()

wrap_TreeModelRowChangedCallback :: TreeModelRowChangedCallback -> C_TreeModelRowChangedCallback

wrap_TreeModelRowDeletedCallback :: TreeModelRowDeletedCallback -> C_TreeModelRowDeletedCallback

wrap_TreeModelRowHasChildToggledCallback :: TreeModelRowHasChildToggledCallback -> C_TreeModelRowHasChildToggledCallback

wrap_TreeModelRowInsertedCallback :: TreeModelRowInsertedCallback -> C_TreeModelRowInsertedCallback

type C_TreeModelRowChangedCallback = Ptr () -> Ptr TreePath -> Ptr TreeIter -> Ptr () -> IO ()

type C_TreeModelRowDeletedCallback = Ptr () -> Ptr TreePath -> Ptr () -> IO ()

type C_TreeModelRowHasChildToggledCallback = Ptr () -> Ptr TreePath -> Ptr TreeIter -> Ptr () -> IO ()

type C_TreeModelRowInsertedCallback = Ptr () -> Ptr TreePath -> Ptr TreeIter -> Ptr () -> IO ()

class GObject o => IsTreeModel o

Instances

(GObject a, (UnknownAncestorError TreeModel a :: Constraint)) => IsTreeModel a

Defined in GI.Gtk.Interfaces.TreeModel

IsTreeModel TreeModel

Defined in GI.Gtk.Interfaces.TreeModel

IsTreeModel TreeSortable

Defined in GI.Gtk.Interfaces.TreeSortable

IsTreeModel ListStore

Defined in GI.Gtk.Objects.ListStore

IsTreeModel TreeModelFilter

Defined in GI.Gtk.Objects.TreeModelFilter

IsTreeModel TreeModelSort

Defined in GI.Gtk.Objects.TreeModelSort

IsTreeModel TreeStore

Defined in GI.Gtk.Objects.TreeStore

IsTreeModel (TypedTreeModelSort row)

Defined in Data.GI.Gtk.ModelView.Types

IsTreeModel (SeqStore a)

Defined in Data.GI.Gtk.ModelView.SeqStore

IsTreeModel (ForestStore a)

Defined in Data.GI.Gtk.ModelView.ForestStore

IsTreeModel (CustomStore private row)

Defined in Data.GI.Gtk.ModelView.CustomStore

newtype TreeModel

Constructors

TreeModel (ManagedPtr TreeModel)

Instances

GObject TreeModel

Defined in GI.Gtk.Interfaces.TreeModel

Methods

gobjectType :: TreeModel -> IO GType

IsTreeModel TreeModel

Defined in GI.Gtk.Interfaces.TreeModel

IsObject TreeModel

Defined in GI.Gtk.Interfaces.TreeModel

(info ~ ResolveTreeModelMethod t TreeModel, MethodInfo info TreeModel p) => IsLabel t (TreeModel -> p)

Defined in GI.Gtk.Interfaces.TreeModel

Methods

fromLabel :: TreeModel -> p

(info ~ ResolveTreeModelMethod t TreeModel, MethodInfo info TreeModel p) => IsLabelProxy t (TreeModel -> p)

Defined in GI.Gtk.Interfaces.TreeModel

Methods

fromLabelProxy :: Proxy t -> TreeModel -> p

HasAttributeList TreeModel

Defined in GI.Gtk.Interfaces.TreeModel

type AttributeList TreeModel

Defined in GI.Gtk.Interfaces.TreeModel

type AttributeList TreeModel = TreeModelAttributeList

type SignalList TreeModel

Defined in GI.Gtk.Interfaces.TreeModel

type SignalList TreeModel = TreeModelSignalList

data TreeModelFilterNewMethodInfo

Instances

(signature ~ (Maybe TreePath -> m TreeModel), MonadIO m, IsTreeModel a) => MethodInfo TreeModelFilterNewMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelFilterNewMethodInfo -> a -> signature

data TreeModelForeachMethodInfo

Instances

(signature ~ (TreeModelForeachFunc -> m ()), MonadIO m, IsTreeModel a) => MethodInfo TreeModelForeachMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelForeachMethodInfo -> a -> signature

data TreeModelGetColumnTypeMethodInfo

Instances

(signature ~ (Int32 -> m GType), MonadIO m, IsTreeModel a) => MethodInfo TreeModelGetColumnTypeMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelGetColumnTypeMethodInfo -> a -> signature

data TreeModelGetFlagsMethodInfo

Instances

(signature ~ m [TreeModelFlags], MonadIO m, IsTreeModel a) => MethodInfo TreeModelGetFlagsMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelGetFlagsMethodInfo -> a -> signature

data TreeModelGetIterFirstMethodInfo

Instances

(signature ~ m (Bool, TreeIter), MonadIO m, IsTreeModel a) => MethodInfo TreeModelGetIterFirstMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelGetIterFirstMethodInfo -> a -> signature

data TreeModelGetIterFromStringMethodInfo

Instances

(signature ~ (Text -> m (Bool, TreeIter)), MonadIO m, IsTreeModel a) => MethodInfo TreeModelGetIterFromStringMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelGetIterFromStringMethodInfo -> a -> signature

data TreeModelGetIterMethodInfo

Instances

(signature ~ (TreePath -> m (Bool, TreeIter)), MonadIO m, IsTreeModel a) => MethodInfo TreeModelGetIterMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelGetIterMethodInfo -> a -> signature

data TreeModelGetNColumnsMethodInfo

Instances

(signature ~ m Int32, MonadIO m, IsTreeModel a) => MethodInfo TreeModelGetNColumnsMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelGetNColumnsMethodInfo -> a -> signature

data TreeModelGetPathMethodInfo

Instances

(signature ~ (TreeIter -> m TreePath), MonadIO m, IsTreeModel a) => MethodInfo TreeModelGetPathMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelGetPathMethodInfo -> a -> signature

data TreeModelGetStringFromIterMethodInfo

Instances

(signature ~ (TreeIter -> m Text), MonadIO m, IsTreeModel a) => MethodInfo TreeModelGetStringFromIterMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelGetStringFromIterMethodInfo -> a -> signature

data TreeModelGetValueMethodInfo

Instances

(signature ~ (TreeIter -> Int32 -> m GValue), MonadIO m, IsTreeModel a) => MethodInfo TreeModelGetValueMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelGetValueMethodInfo -> a -> signature

data TreeModelIterChildrenMethodInfo

Instances

(signature ~ (Maybe TreeIter -> m (Bool, TreeIter)), MonadIO m, IsTreeModel a) => MethodInfo TreeModelIterChildrenMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelIterChildrenMethodInfo -> a -> signature

data TreeModelIterHasChildMethodInfo

Instances

(signature ~ (TreeIter -> m Bool), MonadIO m, IsTreeModel a) => MethodInfo TreeModelIterHasChildMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelIterHasChildMethodInfo -> a -> signature

data TreeModelIterNChildrenMethodInfo

Instances

(signature ~ (Maybe TreeIter -> m Int32), MonadIO m, IsTreeModel a) => MethodInfo TreeModelIterNChildrenMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelIterNChildrenMethodInfo -> a -> signature

data TreeModelIterNextMethodInfo

Instances

(signature ~ (TreeIter -> m Bool), MonadIO m, IsTreeModel a) => MethodInfo TreeModelIterNextMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelIterNextMethodInfo -> a -> signature

data TreeModelIterNthChildMethodInfo

Instances

(signature ~ (Maybe TreeIter -> Int32 -> m (Bool, TreeIter)), MonadIO m, IsTreeModel a) => MethodInfo TreeModelIterNthChildMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelIterNthChildMethodInfo -> a -> signature

data TreeModelIterParentMethodInfo

Instances

(signature ~ (TreeIter -> m (Bool, TreeIter)), MonadIO m, IsTreeModel a) => MethodInfo TreeModelIterParentMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelIterParentMethodInfo -> a -> signature

data TreeModelIterPreviousMethodInfo

Instances

(signature ~ (TreeIter -> m Bool), MonadIO m, IsTreeModel a) => MethodInfo TreeModelIterPreviousMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelIterPreviousMethodInfo -> a -> signature

data TreeModelRefNodeMethodInfo

Instances

(signature ~ (TreeIter -> m ()), MonadIO m, IsTreeModel a) => MethodInfo TreeModelRefNodeMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelRefNodeMethodInfo -> a -> signature

type TreeModelRowChangedCallback = TreePath -> TreeIter -> IO ()

data TreeModelRowChangedMethodInfo

Instances

(signature ~ (TreePath -> TreeIter -> m ()), MonadIO m, IsTreeModel a) => MethodInfo TreeModelRowChangedMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelRowChangedMethodInfo -> a -> signature

data TreeModelRowChangedSignalInfo

Instances

SignalInfo TreeModelRowChangedSignalInfo

Defined in GI.Gtk.Interfaces.TreeModel

Associated Types

type HaskellCallbackType TreeModelRowChangedSignalInfo :: Type

Methods

connectSignal :: GObject o => SignalProxy o TreeModelRowChangedSignalInfo -> o -> HaskellCallbackType TreeModelRowChangedSignalInfo -> SignalConnectMode -> IO SignalHandlerId

type HaskellCallbackType TreeModelRowChangedSignalInfo

Defined in GI.Gtk.Interfaces.TreeModel

type HaskellCallbackType TreeModelRowChangedSignalInfo = TreeModelRowChangedCallback

type TreeModelRowDeletedCallback = TreePath -> IO ()

data TreeModelRowDeletedMethodInfo

Instances

(signature ~ (TreePath -> m ()), MonadIO m, IsTreeModel a) => MethodInfo TreeModelRowDeletedMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelRowDeletedMethodInfo -> a -> signature

data TreeModelRowDeletedSignalInfo

Instances

SignalInfo TreeModelRowDeletedSignalInfo

Defined in GI.Gtk.Interfaces.TreeModel

Associated Types

type HaskellCallbackType TreeModelRowDeletedSignalInfo :: Type

Methods

connectSignal :: GObject o => SignalProxy o TreeModelRowDeletedSignalInfo -> o -> HaskellCallbackType TreeModelRowDeletedSignalInfo -> SignalConnectMode -> IO SignalHandlerId

type HaskellCallbackType TreeModelRowDeletedSignalInfo

Defined in GI.Gtk.Interfaces.TreeModel

type HaskellCallbackType TreeModelRowDeletedSignalInfo = TreeModelRowDeletedCallback

type TreeModelRowHasChildToggledCallback = TreePath -> TreeIter -> IO ()

data TreeModelRowHasChildToggledMethodInfo

Instances

(signature ~ (TreePath -> TreeIter -> m ()), MonadIO m, IsTreeModel a) => MethodInfo TreeModelRowHasChildToggledMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelRowHasChildToggledMethodInfo -> a -> signature

data TreeModelRowHasChildToggledSignalInfo

Instances

SignalInfo TreeModelRowHasChildToggledSignalInfo

Defined in GI.Gtk.Interfaces.TreeModel

Associated Types

type HaskellCallbackType TreeModelRowHasChildToggledSignalInfo :: Type

Methods

connectSignal :: GObject o => SignalProxy o TreeModelRowHasChildToggledSignalInfo -> o -> HaskellCallbackType TreeModelRowHasChildToggledSignalInfo -> SignalConnectMode -> IO SignalHandlerId

type HaskellCallbackType TreeModelRowHasChildToggledSignalInfo

Defined in GI.Gtk.Interfaces.TreeModel

type HaskellCallbackType TreeModelRowHasChildToggledSignalInfo = TreeModelRowHasChildToggledCallback

type TreeModelRowInsertedCallback = TreePath -> TreeIter -> IO ()

data TreeModelRowInsertedMethodInfo

Instances

(signature ~ (TreePath -> TreeIter -> m ()), MonadIO m, IsTreeModel a) => MethodInfo TreeModelRowInsertedMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelRowInsertedMethodInfo -> a -> signature

data TreeModelRowInsertedSignalInfo

Instances

SignalInfo TreeModelRowInsertedSignalInfo

Defined in GI.Gtk.Interfaces.TreeModel

Associated Types

type HaskellCallbackType TreeModelRowInsertedSignalInfo :: Type

Methods

connectSignal :: GObject o => SignalProxy o TreeModelRowInsertedSignalInfo -> o -> HaskellCallbackType TreeModelRowInsertedSignalInfo -> SignalConnectMode -> IO SignalHandlerId

type HaskellCallbackType TreeModelRowInsertedSignalInfo

Defined in GI.Gtk.Interfaces.TreeModel

type HaskellCallbackType TreeModelRowInsertedSignalInfo = TreeModelRowInsertedCallback

data TreeModelRowsReorderedMethodInfo

Instances

(signature ~ (TreePath -> Maybe TreeIter -> [Int32] -> m ()), MonadIO m, IsTreeModel a) => MethodInfo TreeModelRowsReorderedMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelRowsReorderedMethodInfo -> a -> signature

data TreeModelSortNewWithModelMethodInfo

Instances

(signature ~ m TreeModel, MonadIO m, IsTreeModel a) => MethodInfo TreeModelSortNewWithModelMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelSortNewWithModelMethodInfo -> a -> signature

data TreeModelUnrefNodeMethodInfo

Instances

(signature ~ (TreeIter -> m ()), MonadIO m, IsTreeModel a) => MethodInfo TreeModelUnrefNodeMethodInfo a signature

Defined in GI.Gtk.Interfaces.TreeModel

Methods

overloadedMethod :: MethodProxy TreeModelUnrefNodeMethodInfo -> a -> signature

data ColumnId row ty

The type of a tree column.

Instances

Eq (ColumnId row ty)

Defined in Data.GI.Gtk.ModelView.TreeModel

Methods

(==) :: ColumnId row ty -> ColumnId row ty -> Bool

(/=) :: ColumnId row ty -> ColumnId row ty -> Bool

Show (ColumnId row ty)

Defined in Data.GI.Gtk.ModelView.TreeModel

Methods

showsPrec :: Int -> ColumnId row ty -> ShowS

show :: ColumnId row ty -> String

showList :: [ColumnId row ty] -> ShowS

Constructors

makeColumnIdInt :: Int32 -> ColumnId row Int32

Create a ColumnId to extract an integer.

makeColumnIdBool :: Int32 -> ColumnId row Bool

Create a ColumnId to extract an Boolean.

makeColumnIdString :: Int32 -> ColumnId row Text

Create a ColumnId to extract an string.

makeColumnIdPixbuf :: Int32 -> ColumnId row Pixbuf

Create a ColumnId to extract an Pixbuf.

invalidColumnId :: ColumnId row ty

The invalid ColumnId. Widgets use this value if no column id has been set.

Methods

columnIdToNumber :: ColumnId row ty -> Int32

Convert a ColumnId to a bare number.

stringToTreePath :: Text -> [Int32]

Convert a comma or colon separated string into a TreePath. Any non-digit characters are assumed to separate indices, thus, the function always is always successful.

treeModelGetValue

Arguments

:: IsTreeModel self

=> self

-> TreeIter

-> ColumnId row ty

column - The column to lookup the value at.

-> IO ty

Read the value of at a specific column and TreeIter.

treeModelGetIter :: (MonadIO m, IsTreeModel model) => model -> TreePath -> m (Maybe TreeIter)

Gets the a TreeIter or Nothing if the path is invalid or empty

Orphan instances

Eq (ColumnId row ty)

Methods

(==) :: ColumnId row ty -> ColumnId row ty -> Bool

(/=) :: ColumnId row ty -> ColumnId row ty -> Bool

Show (ColumnId row ty)

Methods

showsPrec :: Int -> ColumnId row ty -> ShowS

show :: ColumnId row ty -> String

showList :: [ColumnId row ty] -> ShowS