gtk-0.12.4: Binding to the Gtk+ graphical user interface library.

Portability | portable (depends on GHC)
Stability | provisional
Maintainer | gtk2hs-users@lists.sourceforge.net
Safe Haskell | None

Graphics.UI.Gtk.ModelView.TreeView

Contents

- Description
- Class Hierarchy
- Types
- Constructors
- Methods
- Attributes
- Signals
- Deprecated

Description

A widget for displaying both trees and lists.

Synopsis

- data TreeView
- class ContainerClass o => TreeViewClass o
- castToTreeView :: GObjectClass obj => obj -> TreeView
- gTypeTreeView :: GType
- toTreeView :: TreeViewClass o => o -> TreeView
- type Point = (Int, Int)
- data DragAction
  - = ActionDefault
  - | ActionCopy
  - | ActionMove
  - | ActionLink
  - | ActionPrivate
  - | ActionAsk
- data TreeViewGridLines
  - = TreeViewGridLinesNone
  - | TreeViewGridLinesHorizontal
  - | TreeViewGridLinesVertical
  - | TreeViewGridLinesBoth
- treeViewNew :: IO TreeView
- treeViewNewWithModel :: TreeModelClass model => model -> IO TreeView
- treeViewGetModel :: TreeViewClass self => self -> IO (Maybe TreeModel)
- treeViewSetModel :: (TreeViewClass self, TreeModelClass model) => self -> model -> IO ()
- treeViewGetSelection :: TreeViewClass self => self -> IO TreeSelection
- treeViewGetHAdjustment :: TreeViewClass self => self -> IO (Maybe Adjustment)
- treeViewSetHAdjustment :: TreeViewClass self => self -> Maybe Adjustment -> IO ()
- treeViewGetVAdjustment :: TreeViewClass self => self -> IO (Maybe Adjustment)
- treeViewSetVAdjustment :: TreeViewClass self => self -> Maybe Adjustment -> IO ()
- treeViewGetHeadersVisible :: TreeViewClass self => self -> IO Bool
- treeViewSetHeadersVisible :: TreeViewClass self => self -> Bool -> IO ()
- treeViewColumnsAutosize :: TreeViewClass self => self -> IO ()
- treeViewSetHeadersClickable :: TreeViewClass self => self -> Bool -> IO ()
- treeViewGetRulesHint :: TreeViewClass self => self -> IO Bool
- treeViewSetRulesHint :: TreeViewClass self => self -> Bool -> IO ()
- treeViewAppendColumn :: TreeViewClass self => self -> TreeViewColumn -> IO Int
- treeViewRemoveColumn :: TreeViewClass self => self -> TreeViewColumn -> IO Int
- treeViewInsertColumn :: TreeViewClass self => self -> TreeViewColumn -> Int -> IO Int
- treeViewGetColumn :: TreeViewClass self => self -> Int -> IO (Maybe TreeViewColumn)
- treeViewGetColumns :: TreeViewClass self => self -> IO [TreeViewColumn]
- treeViewMoveColumnAfter :: TreeViewClass self => self -> TreeViewColumn -> TreeViewColumn -> IO ()
- treeViewMoveColumnFirst :: TreeViewClass self => self -> TreeViewColumn -> IO ()
- treeViewSetExpanderColumn :: TreeViewClass self => self -> Maybe TreeViewColumn -> IO ()
- treeViewGetExpanderColumn :: TreeViewClass self => self -> IO TreeViewColumn
- treeViewSetColumnDragFunction :: TreeViewClass self => self -> Maybe (TreeViewColumn -> Maybe TreeViewColumn -> Maybe TreeViewColumn -> IO Bool) -> IO ()
- treeViewScrollToPoint :: TreeViewClass self => self -> Int -> Int -> IO ()
- treeViewScrollToCell :: TreeViewClass self => self -> TreePath -> TreeViewColumn -> Maybe (Float, Float) -> IO ()
- treeViewSetCursor :: TreeViewClass self => self -> TreePath -> Maybe (TreeViewColumn, Bool) -> IO ()
- treeViewSetCursorOnCell :: (TreeViewClass self, CellRendererClass focusCell) => self -> TreePath -> TreeViewColumn -> focusCell -> Bool -> IO ()
- treeViewGetCursor :: TreeViewClass self => self -> IO (TreePath, Maybe TreeViewColumn)
- treeViewRowActivated :: TreeViewClass self => self -> TreePath -> TreeViewColumn -> IO ()
- treeViewExpandAll :: TreeViewClass self => self -> IO ()
- treeViewCollapseAll :: TreeViewClass self => self -> IO ()
- treeViewExpandToPath :: TreeViewClass self => self -> TreePath -> IO ()
- treeViewExpandRow :: TreeViewClass self => self -> TreePath -> Bool -> IO Bool
- treeViewCollapseRow :: TreeViewClass self => self -> TreePath -> IO Bool
- treeViewMapExpandedRows :: TreeViewClass self => self -> (TreePath -> IO ()) -> IO ()
- treeViewRowExpanded :: TreeViewClass self => self -> TreePath -> IO Bool
- treeViewGetReorderable :: TreeViewClass self => self -> IO Bool
- treeViewSetReorderable :: TreeViewClass self => self -> Bool -> IO ()
- treeViewGetPathAtPos :: TreeViewClass self => self -> Point -> IO (Maybe (TreePath, TreeViewColumn, Point))
- treeViewGetCellArea :: TreeViewClass self => self -> Maybe TreePath -> TreeViewColumn -> IO Rectangle
- treeViewGetBackgroundArea :: TreeViewClass self => self -> Maybe TreePath -> TreeViewColumn -> IO Rectangle
- treeViewGetVisibleRect :: TreeViewClass self => self -> IO Rectangle
- treeViewConvertBinWindowToTreeCoords :: TreeViewClass self => self -> Point -> IO Point
- treeViewConvertBinWindowToWidgetCoords :: TreeViewClass self => self -> Point -> IO Point
- treeViewConvertTreeToBinWindowCoords :: TreeViewClass self => self -> Point -> IO Point
- treeViewConvertTreeToWidgetCoords :: TreeViewClass self => self -> Point -> IO Point
- treeViewConvertWidgetToBinWindowCoords :: TreeViewClass self => self -> Point -> IO Point
- treeViewConvertWidgetToTreeCoords :: TreeViewClass self => self -> Point -> IO Point
- treeViewCreateRowDragIcon :: TreeViewClass self => self -> TreePath -> IO Pixmap
- treeViewGetEnableSearch :: TreeViewClass self => self -> IO Bool
- treeViewSetEnableSearch :: TreeViewClass self => self -> Bool -> IO ()
- treeViewGetSearchColumn :: TreeViewClass self => self -> IO (ColumnId row String)
- treeViewSetSearchColumn :: TreeViewClass self => self -> ColumnId row String -> IO ()
- treeViewSetSearchEqualFunc :: TreeViewClass self => self -> Maybe (String -> TreeIter -> IO Bool) -> IO ()
- treeViewGetFixedHeightMode :: TreeViewClass self => self -> IO Bool
- treeViewSetFixedHeightMode :: TreeViewClass self => self -> Bool -> IO ()
- treeViewGetHoverSelection :: TreeViewClass self => self -> IO Bool
- treeViewSetHoverSelection :: TreeViewClass self => self -> Bool -> IO ()
- treeViewGetHoverExpand :: TreeViewClass self => self -> IO Bool
- treeViewSetHoverExpand :: TreeViewClass self => self -> Bool -> IO ()
- treeViewGetHeadersClickable :: TreeViewClass self => self -> IO Bool
- treeViewGetVisibleRange :: TreeViewClass self => self -> IO (TreePath, TreePath)
- treeViewEnableModelDragDest :: TreeViewClass self => self -> TargetList -> [DragAction] -> IO ()
- treeViewEnableModelDragSource :: TreeViewClass self => self -> [Modifier] -> TargetList -> [DragAction] -> IO ()
- treeViewUnsetRowsDragSource :: TreeViewClass self => self -> IO ()
- treeViewUnsetRowsDragDest :: TreeViewClass self => self -> IO ()
- treeViewGetSearchEntry :: TreeViewClass self => self -> IO (Maybe Entry)
- treeViewSetSearchEntry :: (TreeViewClass self, EntryClass entry) => self -> Maybe entry -> IO ()
- treeViewSetRowSeparatorFunc :: TreeViewClass self => self -> Maybe (TreeIter -> IO Bool) -> IO ()
- treeViewGetRubberBanding :: TreeViewClass self => self -> IO Bool
- treeViewSetRubberBanding :: TreeViewClass self => self -> Bool -> IO ()
- treeViewGetEnableTreeLines :: TreeViewClass self => self -> IO Bool
- treeViewSetEnableTreeLines :: TreeViewClass self => self -> Bool -> IO ()
- treeViewGetGridLines :: TreeViewClass self => self -> IO TreeViewGridLines
- treeViewSetGridLines :: TreeViewClass self => self -> TreeViewGridLines -> IO ()
- treeViewSetTooltipRow :: TreeViewClass self => self -> Tooltip -> TreePath -> IO ()
- treeViewSetTooltipCell :: (TreeViewClass self, TreeViewColumnClass col, CellRendererClass renderer) => self -> Tooltip -> Maybe TreePath -> Maybe col -> Maybe renderer -> IO ()
- treeViewGetTooltipContext :: TreeViewClass self => self -> Maybe Point -> IO (Maybe TreeIter)
- treeViewModel :: (TreeViewClass self, TreeModelClass model) => ReadWriteAttr self (Maybe TreeModel) model
- treeViewHAdjustment :: TreeViewClass self => Attr self (Maybe Adjustment)
- treeViewVAdjustment :: TreeViewClass self => Attr self (Maybe Adjustment)
- treeViewHeadersVisible :: TreeViewClass self => Attr self Bool
- treeViewHeadersClickable :: TreeViewClass self => Attr self Bool
- treeViewExpanderColumn :: TreeViewClass self => ReadWriteAttr self TreeViewColumn (Maybe TreeViewColumn)
- treeViewReorderable :: TreeViewClass self => Attr self Bool
- treeViewRulesHint :: TreeViewClass self => Attr self Bool
- treeViewEnableSearch :: TreeViewClass self => Attr self Bool
- treeViewSearchColumn :: TreeViewClass self => Attr self (ColumnId row String)
- treeViewFixedHeightMode :: TreeViewClass self => Attr self Bool
- treeViewHoverSelection :: TreeViewClass self => Attr self Bool
- treeViewHoverExpand :: TreeViewClass self => Attr self Bool
- treeViewShowExpanders :: TreeViewClass self => Attr self Bool
- treeViewLevelIndentation :: TreeViewClass self => Attr self Int
- treeViewRubberBanding :: TreeViewClass self => Attr self Bool
- treeViewEnableGridLines :: TreeViewClass self => Attr self TreeViewGridLines
- treeViewEnableTreeLines :: TreeViewClass self => Attr self Bool
- treeViewGridLines :: TreeViewClass self => Attr self TreeViewGridLines
- treeViewSearchEntry :: (TreeViewClass self, EntryClass entry) => ReadWriteAttr self (Maybe Entry) (Maybe entry)
- treeViewTooltipColumn :: TreeViewClass self => Attr self (ColumnId row String)
- columnsChanged :: TreeViewClass self => Signal self (IO ())
- cursorChanged :: TreeViewClass self => Signal self (IO ())
- rowCollapsed :: TreeViewClass self => Signal self (TreeIter -> TreePath -> IO ())
- rowExpanded :: TreeViewClass self => Signal self (TreeIter -> TreePath -> IO ())
- rowActivated :: TreeViewClass self => Signal self (TreePath -> TreeViewColumn -> IO ())
- testCollapseRow :: TreeViewClass self => Signal self (TreeIter -> TreePath -> IO Bool)
- testExpandRow :: TreeViewClass self => Signal self (TreeIter -> TreePath -> IO Bool)
- treeViewWidgetToTreeCoords :: TreeViewClass self => self -> Point -> IO Point
- treeViewTreeToWidgetCoords :: TreeViewClass self => self -> Point -> IO Point
- onColumnsChanged :: TreeViewClass self => self -> IO () -> IO (ConnectId self)
- afterColumnsChanged :: TreeViewClass self => self -> IO () -> IO (ConnectId self)
- onCursorChanged :: TreeViewClass self => self -> IO () -> IO (ConnectId self)
- afterCursorChanged :: TreeViewClass self => self -> IO () -> IO (ConnectId self)
- onRowActivated :: TreeViewClass self => self -> (TreePath -> TreeViewColumn -> IO ()) -> IO (ConnectId self)
- afterRowActivated :: TreeViewClass self => self -> (TreePath -> TreeViewColumn -> IO ()) -> IO (ConnectId self)
- onRowCollapsed :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO ()) -> IO (ConnectId self)
- afterRowCollapsed :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO ()) -> IO (ConnectId self)
- onRowExpanded :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO ()) -> IO (ConnectId self)
- afterRowExpanded :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO ()) -> IO (ConnectId self)
- onStartInteractiveSearch :: TreeViewClass self => self -> IO () -> IO (ConnectId self)
- afterStartInteractiveSearch :: TreeViewClass self => self -> IO () -> IO (ConnectId self)
- onTestCollapseRow :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO Bool) -> IO (ConnectId self)
- afterTestCollapseRow :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO Bool) -> IO (ConnectId self)
- onTestExpandRow :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO Bool) -> IO (ConnectId self)
- afterTestExpandRow :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO Bool) -> IO (ConnectId self)

# Description

Widget that displays any object that implements the `TreeModel` interface.

The widget supports scrolling natively. This implies that pixel coordinates can be given in two formats: relative to the current view's upper left corner or relative to the whole list's coordinates. The former are called widget coordinates while the letter are called tree coordinates.

# Class Hierarchy

     | GObject
     | +----Object
     | +----Widget
     | +----Container
     | +----TreeView

# Types

data TreeView

Instances

Eq TreeView |
Ord TreeView |
GObjectClass TreeView |
TreeViewClass TreeView |
ContainerClass TreeView |
WidgetClass TreeView |
ObjectClass TreeView |

class ContainerClass o => TreeViewClass o

Instances

TreeViewClass TreeView |

castToTreeView :: GObjectClass obj => obj -> TreeView

gTypeTreeView :: GType

toTreeView :: TreeViewClass o => o -> TreeView

type Point = (Int, Int)

Represents the x and y coordinate of a point.

data DragAction

Used in `DragContext` to indicate what the destination should do with the dropped data.

- `ActionDefault`: Initialisation value, should not be used.
- `ActionCopy`: Copy the data.
- `ActionMove`: Move the data, i.e. first copy it, then delete it from the source.
- `ActionLink`: Add a link to the data. Note that this is only useful if source and destination agree on what it means.
- `ActionPrivate`: Special action which tells the source that the destination will do something that the source doesn't understand.
- `ActionAsk`: Ask the user what to do with the data.

Constructors

ActionDefault |
ActionCopy |
ActionMove |
ActionLink |
ActionPrivate |
ActionAsk |

Instances

Bounded DragAction |
Enum DragAction |
Eq DragAction |
Show DragAction |
Flags DragAction |

data TreeViewGridLines

Grid lines.

Constructors

TreeViewGridLinesNone |
TreeViewGridLinesHorizontal |
TreeViewGridLinesVertical |
TreeViewGridLinesBoth |

Instances

Enum TreeViewGridLines |

# Constructors

treeViewNew :: IO TreeView

Creates a new `TreeView` widget.

treeViewNewWithModel :: TreeModelClass model => model -> IO TreeView

Create a new `TreeView` widget with `model` as the storage model.

# Methods

treeViewGetModel :: TreeViewClass self => self -> IO (Maybe TreeModel)

Returns the model that supplies the data for this `TreeView`. Returns `Nothing` if the model is unset.

treeViewSetModel :: (TreeViewClass self, TreeModelClass model) => self -> model -> IO ()

Set the `TreeModel` for the current View.

treeViewGetSelection :: TreeViewClass self => self -> IO TreeSelection

Retrieve a `TreeSelection` that holds the current selected nodes of the View.

treeViewGetHAdjustment :: TreeViewClass self => self -> IO (Maybe Adjustment)

Gets the `Adjustment` currently being used for the horizontal aspect.

treeViewSetHAdjustment

Arguments

:: TreeViewClass self |
=> self |
-> Maybe Adjustment | `adjustment` - The `Adjustment` to set, or `Nothing`
-> IO () |

Sets the `Adjustment` for the current horizontal aspect.

treeViewGetVAdjustment :: TreeViewClass self => self -> IO (Maybe Adjustment)

Gets the `Adjustment` currently being used for the vertical aspect.

treeViewSetVAdjustment

Arguments

:: TreeViewClass self |
=> self |
-> Maybe Adjustment | `adjustment` - The `Adjustment` to set, or `Nothing`
-> IO () |

Sets the `Adjustment` for the current vertical aspect.

treeViewGetHeadersVisible :: TreeViewClass self => self -> IO Bool

Query if the column headers are visible.

treeViewSetHeadersVisible :: TreeViewClass self => self -> Bool -> IO ()

Set the visibility state of the column headers.

treeViewColumnsAutosize :: TreeViewClass self => self -> IO ()

Resize the columns to their optimal size.

treeViewSetHeadersClickable :: TreeViewClass self => self -> Bool -> IO ()

Set wether the columns headers are sensitive to mouse clicks.

treeViewGetRulesHint :: TreeViewClass self => self -> IO Bool

Query if visual aid for wide columns is turned on.

treeViewSetRulesHint :: TreeViewClass self => self -> Bool -> IO ()

This function tells Gtk+ that the user interface for your application requires users to read across tree rows and associate cells with one another. By default, Gtk+ will then render the tree with alternating row colors. Do not use it just because you prefer the appearance of the ruled tree; that's a question for the theme. Some themes will draw tree rows in alternating colors even when rules are turned off, and users who prefer that appearance all the time can choose those themes. You should call this function only as a semantic hint to the theme engine that your tree makes alternating colors useful from a functional standpoint (since it has lots of columns, generally).

treeViewAppendColumn :: TreeViewClass self => self -> TreeViewColumn -> IO Int

Append a new column to the `TreeView`. Returns the new number of columns.

treeViewRemoveColumn :: TreeViewClass self => self -> TreeViewColumn -> IO Int

Remove column `tvc` from the `TreeView` widget. The number of remaining columns is returned.

treeViewInsertColumn :: TreeViewClass self => self -> TreeViewColumn -> Int -> IO Int

Inserts column `tvc` into the `TreeView` widget at the position `pos`. Returns the number of columns after insertion. Specify -1 for `pos` to insert the column at the end.

treeViewGetColumn :: TreeViewClass self => self -> Int -> IO (Maybe TreeViewColumn)

Retrieve a `TreeViewColumn`.

- Retrieve the `pos` th columns of `TreeView`. If the index is out of range Nothing is returned.

treeViewGetColumns :: TreeViewClass self => self -> IO [TreeViewColumn]

Return all `TreeViewColumn`s in this `TreeView`.

treeViewMoveColumnAfter :: TreeViewClass self => self -> TreeViewColumn -> TreeViewColumn -> IO ()

Move a specific column.

- Use `treeViewMoveColumnToFront` if you want to move the column to the left end of the `TreeView`.

treeViewMoveColumnFirst :: TreeViewClass self => self -> TreeViewColumn -> IO ()

Move a specific column.

- Use `treeViewMoveColumnAfter` if you want to move the column somewhere else than to the leftmost position.

treeViewSetExpanderColumn :: TreeViewClass self => self -> Maybe TreeViewColumn -> IO ()

Set location of hierarchy controls.

- Sets the column to draw the expander arrow at. If `col` is `Nothing`, then the expander arrow is always at the first visible column.

If you do not want expander arrow to appear in your tree, set the expander column to a hidden column.

treeViewGetExpanderColumn :: TreeViewClass self => self -> IO TreeViewColumn

Get location of hierarchy controls.

- Gets the column to draw the expander arrow at. If `col` is `Nothing`, then the expander arrow is always at the first visible column.

treeViewSetColumnDragFunction :: TreeViewClass self => self -> Maybe (TreeViewColumn -> Maybe TreeViewColumn -> Maybe TreeViewColumn -> IO Bool) -> IO ()

Specify where a column may be dropped.

- Sets a user function for determining where a column may be dropped when dragged. This function is called on every column pair in turn at the beginning of a column drag to determine where a drop can take place.
- The callback function take the `TreeViewColumn` to be moved, the second and third arguments are the columns on the left and right side of the new location. At most one of them might be `Nothing` which indicates that the column is about to be dropped at the left or right end of the `TreeView`.
- The predicate `pred` should return `True` if it is ok to insert the column at this place.
- Use `Nothing` for the predicate if columns can be inserted anywhere.

treeViewScrollToPoint :: TreeViewClass self => self -> Int -> Int -> IO ()

Scroll to a coordinate.

- Scrolls the tree view such that the top-left corner of the visible area is `treeX`, `treeY`, where `treeX` and `treeY` are specified in tree window coordinates. The `TreeView` must be realized before this function is called. If it isn't, you probably want to use `treeViewScrollToCell`.

treeViewScrollToCell :: TreeViewClass self => self -> TreePath -> TreeViewColumn -> Maybe (Float, Float) -> IO ()

Scroll to a cell.

- Scroll to a cell as specified by `path` and `tvc`. The cell is aligned within the `TreeView` widget as follows: horizontally by `hor` from left (`0.0`) to right (`1.0`) and vertically by `ver` from top (`0.0`) to buttom (`1.0`).

treeViewSetCursor :: TreeViewClass self => self -> TreePath -> Maybe (TreeViewColumn, Bool) -> IO ()

Selects a specific row.

- Sets the current keyboard focus to be at `path`, and selects it. This is useful when you want to focus the user's attention on a particular row. If `focusColumn` is given, then the input focus is given to the column specified by it. Additionally, if `focusColumn` is specified, and `startEditing` is `True`, then editing will be started in the specified cell. This function is often followed by a `widgetGrabFocus` to the `TreeView` in order to give keyboard focus to the widget.

treeViewSetCursorOnCell :: (TreeViewClass self, CellRendererClass focusCell) => self -> TreePath -> TreeViewColumn -> focusCell -> Bool -> IO ()

Selects a cell in a specific row.

- Similar to `treeViewSetCursor` but allows a column to containt several `CellRenderer`s.
- Only available in Gtk 2.2 and higher.

treeViewGetCursor :: TreeViewClass self => self -> IO (TreePath, Maybe TreeViewColumn)

Retrieves the position of the focus.

- Returns a pair `(path, column)`.If the cursor is not currently set, `path` will be `[]`. If no column is currently selected, `column` will be `Nothing`.

treeViewRowActivated :: TreeViewClass self => self -> TreePath -> TreeViewColumn -> IO ()

Emit the activated signal on a cell.

treeViewExpandAll :: TreeViewClass self => self -> IO ()

Recursively expands all nodes in the tree view.

treeViewCollapseAll :: TreeViewClass self => self -> IO ()

Recursively collapses all visible, expanded nodes in the tree view.

treeViewExpandToPath :: TreeViewClass self => self -> TreePath -> IO ()

Make a certain path visible.

- This will expand all parent rows of `tp` as necessary.
- Only available in Gtk 2.2 and higher.

treeViewExpandRow

Arguments

:: TreeViewClass self |
=> self |
-> TreePath | `path` - path to a row
-> Bool | `openAll` - whether to recursively expand, or just expand immediate children
-> IO Bool | returns `True` if the row existed and had children

Opens the row so its children are visible.

treeViewCollapseRow

Arguments

:: TreeViewClass self |
=> self |
-> TreePath | `path` - path to a row in the tree view
-> IO Bool | returns `True` if the row was collapsed.

Collapses a row (hides its child rows, if they exist).

treeViewMapExpandedRows :: TreeViewClass self => self -> (TreePath -> IO ()) -> IO ()

Call function for every expaned row.

treeViewRowExpanded

Arguments

:: TreeViewClass self |
=> self |
-> TreePath | `path` - A `TreePath` to test expansion state.
-> IO Bool | returns `True` if `path` is expanded.

Check if row is expanded.

treeViewGetReorderable :: TreeViewClass self => self -> IO Bool

Query if rows can be moved around.

- See `treeViewSetReorderable`.

treeViewSetReorderable :: TreeViewClass self => self -> Bool -> IO ()

Check if rows can be moved around.

- Set whether the user can use drag and drop (DND) to reorder the rows in the store. This works on both `TreeStore` and `ListStore` models. If `ro` is `True`, then the user can reorder the model by dragging and dropping rows. The developer can listen to these changes by connecting to the model's signals. If you need to control which rows may be dragged or where rows may be dropped, you can override the `treeDragSourceRowDraggable` function in the default DND implementation of the model.

treeViewGetPathAtPos :: TreeViewClass self => self -> Point -> IO (Maybe (TreePath, TreeViewColumn, Point))

Map a pixel to the specific cell.

- Finds the path at the `Point` `(x, y)`. The coordinates `x` and `y` are relative to the top left corner of the `TreeView` drawing window. As such, coordinates in a mouse click event can be used directly to determine the cell which the user clicked on. This function is useful to realize popup menus.
- The returned point is the input point relative to the cell's upper left corner. The whole `TreeView` is divided between all cells. The returned point is relative to the rectangle this cell occupies within the `TreeView`.

treeViewGetCellArea :: TreeViewClass self => self -> Maybe TreePath -> TreeViewColumn -> IO Rectangle

Retrieve the smallest bounding box of a cell.

- Fills the bounding rectangle in tree window coordinates for the cell at the row specified by `tp` and the column specified by `tvc`. If `path` is `Nothing` or points to a path not currently displayed, the `y` and `height` fields of the `Rectangle` will be filled with `0`. The sum of all cell rectangles does not cover the entire tree; there are extra pixels in between rows, for example.

treeViewGetBackgroundArea :: TreeViewClass self => self -> Maybe TreePath -> TreeViewColumn -> IO Rectangle

Retrieve the largest bounding box of a cell.

- Fills the bounding rectangle in tree window coordinates for the cell at the row specified by `tp` and the column specified by `tvc`. If `path` is `Nothing` or points to a path not currently displayed, the `y` and `height` fields of the `Rectangle` will be filled with `0`. The background areas tile the widget's area to cover the entire tree window (except for the area used for header buttons). Contrast this with `treeViewGetCellArea`.

treeViewGetVisibleRect :: TreeViewClass self => self -> IO Rectangle

Retrieve the currently visible area.

- The returned rectangle gives the visible part of the tree in tree coordinates.

treeViewConvertBinWindowToTreeCoords

Arguments

:: TreeViewClass self |
=> self |
-> Point | `(bx, by)` - bin window X and Y coordinates
-> IO Point | `(tx, ty)` returns tree X and Y coordinates

Converts bin window coordinates to coordinates for the tree (the full scrollable area of the tree).

treeViewConvertBinWindowToWidgetCoords

Arguments

:: TreeViewClass self |
=> self |
-> Point | `(bx, by)` - bin window X and Y coordinates
-> IO Point | `(wx, wy)` returns widget X and Y coordinates

Converts bin window coordinates (see `treeViewGetBinWindow` to widget relative coordinates.

treeViewConvertTreeToBinWindowCoords

Arguments

:: TreeViewClass self |
=> self |
-> Point | `(tx, ty)` - tree X and Y coordinates
-> IO Point | `(bx, by)` returns bin window X and Y coordinates

Converts tree coordinates (coordinates in full scrollable area of the tree) to bin window coordinates.

treeViewConvertTreeToWidgetCoords

Arguments

:: TreeViewClass self |
=> self |
-> Point | `(tx, ty)` - tree X and Y coordinates
-> IO Point | `(wx, wy)` returns widget X and Y coordinates

Converts tree coordinates (coordinates in full scrollable area of the tree) to widget coordinates.

treeViewConvertWidgetToBinWindowCoords

Arguments

:: TreeViewClass self |
=> self |
-> Point | `(wx, wy)` - widget X and Y coordinates
-> IO Point | `(bx, by)` returns bin window X and Y coordinates

Converts widget coordinates to coordinates for the window (see `treeViewGetBinWindow` ).

treeViewConvertWidgetToTreeCoords

Arguments

:: TreeViewClass self |
=> self |
-> Point | `(wx, wy)` - bin window X and Y coordinates
-> IO Point | `(tx, ty)` returns tree X and Y coordinates

Converts widget coordinates to coordinates for the tree (the full scrollable area of the tree).

treeViewCreateRowDragIcon :: TreeViewClass self => self -> TreePath -> IO Pixmap

Creates a `Pixmap` representation of the row at the given path. This image can be used for a drag icon.

treeViewGetEnableSearch :: TreeViewClass self => self -> IO Bool

Returns whether or not the tree allows to start interactive searching by typing in text.

- If enabled, the user can type in text which will set the cursor to the first matching entry.

treeViewSetEnableSearch :: TreeViewClass self => self -> Bool -> IO ()

If this is set, then the user can type in text to search through the tree interactively (this is sometimes called "typeahead find").

Note that even if this is `False`, the user can still initiate a search using the "start-interactive-search" key binding. In any case, a predicate that compares a row of the model with the text the user has typed must be set using `treeViewSetSearchEqualFunc`.

treeViewGetSearchColumn

Arguments

:: TreeViewClass self |
=> self |
-> IO (ColumnId row String) | returns the column the interactive search code searches in.

Gets the column searched on by the interactive search code.

treeViewSetSearchColumn

Arguments

:: TreeViewClass self |
=> self |
-> ColumnId row String | `column` - the column of the model to search in, or -1 to disable searching
-> IO () |

Sets `column` as the column where the interactive search code should search in.

If the sort column is set, users can use the "start-interactive-search" key binding to bring up search popup. The enable-search property controls whether simply typing text will also start an interactive search.

Note that `column` refers to a column of the model. Furthermore, the search column is not used if a comparison function is set, see `treeViewSetSearchEqualFunc`.

treeViewSetSearchEqualFunc :: TreeViewClass self => self -> Maybe (String -> TreeIter -> IO Bool) -> IO ()

Set the predicate to test for equality.

- The predicate must returns `True` if the text entered by the user and the row of the model match. Calling this function will overwrite the `treeViewSearchColumn` (which isn't used anyway when a comparison function is installed).

treeViewGetFixedHeightMode

Arguments

:: TreeViewClass self |
=> self |
-> IO Bool | returns `True` if the tree view is in fixed height mode

Returns whether fixed height mode is turned on for the tree view.

- Available since Gtk+ version 2.6

treeViewSetFixedHeightMode

Arguments

:: TreeViewClass self |
=> self |
-> Bool | `enable` - `True` to enable fixed height mode
-> IO () |

Enables or disables the fixed height mode of the tree view. Fixed height mode speeds up `TreeView` by assuming that all rows have the same height. Only enable this option if all rows are the same height and all columns are of type `TreeViewColumnFixed`.

- Available since Gtk+ version 2.6

treeViewGetHoverSelection

Arguments

:: TreeViewClass self |
=> self |
-> IO Bool | returns `True` if the tree view is in hover selection mode

Returns whether hover selection mode is turned on for `treeView`.

- Available since Gtk+ version 2.6

treeViewSetHoverSelection

Arguments

:: TreeViewClass self |
=> self |
-> Bool | `hover` - `True` to enable hover selection mode
-> IO () |

Enables of disables the hover selection mode of the tree view. Hover selection makes the selected row follow the pointer. Currently, this works only for the selection modes `SelectionSingle` and `SelectionBrowse`.

- Available since Gtk+ version 2.6

treeViewGetHoverExpand

Arguments

:: TreeViewClass self |
=> self |
-> IO Bool | returns `True` if the tree view is in hover expansion mode

Returns whether hover expansion mode is turned on for the tree view.

- Available since Gtk+ version 2.6

treeViewSetHoverExpand

Arguments

:: TreeViewClass self |
=> self |
-> Bool | `expand` - `True` to enable hover selection mode
-> IO () |

Enables of disables the hover expansion mode of the tree view. Hover expansion makes rows expand or collaps if the pointer moves over them.

- Available since Gtk+ version 2.6

treeViewGetHeadersClickable

Arguments

:: TreeViewClass self |
=> self |
-> IO Bool | returns `True` if all header columns are clickable, otherwise `False`

Returns whether all header columns are clickable.

- Available since Gtk+ version 2.10

treeViewGetVisibleRange

Arguments

:: TreeViewClass self |
=> self |
-> IO (TreePath, TreePath) | the first and the last node that is visible

Return the first and last visible path. Note that there may be invisible paths in between.

- Available since Gtk+ version 2.8

treeViewEnableModelDragDest

Arguments

:: TreeViewClass self |
=> self |
-> TargetList | `targets` - the list of targets that the the view will support
-> [DragAction] | `actions` - flags denoting the possible actions for a drop into this widget
-> IO () |

Turns `treeView` into a drop destination for automatic DND.

treeViewEnableModelDragSource

Arguments

:: TreeViewClass self |
=> self |
-> [Modifier] | `startButtonMask` - Mask of allowed buttons to start drag
-> TargetList | `targets` - the list of targets that the the view will support
-> [DragAction] | `actions` - flags denoting the possible actions for a drag from this widget
-> IO () |

Turns `treeView` into a drag source for automatic DND.

treeViewUnsetRowsDragSource :: TreeViewClass self => self -> IO ()

Undoes the effect of `treeViewEnableModelDragSource`.

treeViewUnsetRowsDragDest :: TreeViewClass self => self -> IO ()

Undoes the effect of `treeViewEnableModelDragDest`.

treeViewGetSearchEntry

Arguments

:: TreeViewClass self |
=> self |
-> IO (Maybe Entry) | returns the entry currently in use as search entry.

Returns the `Entry` which is currently in use as interactive search entry for `treeView`. In case the built-in entry is being used, `Nothing` will be returned.

- Available since Gtk+ version 2.10

treeViewSetSearchEntry

Arguments

:: (TreeViewClass self, EntryClass entry) |
=> self |
-> Maybe entry | `entry` - the entry the interactive search code of `treeView` should use or `Nothing`
-> IO () |

Sets the entry which the interactive search code will use for this `treeView`. This is useful when you want to provide a search entry in our interface at all time at a fixed position. Passing `Nothing` for `entry` will make the interactive search code use the built-in popup entry again.

- Available since Gtk+ version 2.10

treeViewSetRowSeparatorFunc

Arguments

:: TreeViewClass self |
=> self |
-> Maybe (TreeIter -> IO Bool) | `func` - a callback function that returns `True` if the given row of the model should be drawn as separator
-> IO () |

Sets the row separator function, which is used to determine whether a row should be drawn as a separator. If the row separator function is `Nothing`, no separators are drawn. This is the default value.

- Available since Gtk+ version 2.6

treeViewGetRubberBanding

Arguments

:: TreeViewClass self |
=> self |
-> IO Bool | returns `True` if rubber banding in `treeView` is enabled.

Returns whether rubber banding is turned on for `treeView`. If the selection mode is `SelectionMultiple`, rubber banding will allow the user to select multiple rows by dragging the mouse.

- Available since Gtk+ version 2.10

treeViewSetRubberBanding

Arguments

:: TreeViewClass self |
=> self |
-> Bool | `enable` - `True` to enable rubber banding
-> IO () |

Enables or disables rubber banding in `treeView`. If the selection mode is `SelectionMultiple`, rubber banding will allow the user to select multiple rows by dragging the mouse.

- Available since Gtk+ version 2.10

treeViewGetEnableTreeLines

Arguments

:: TreeViewClass self |
=> self |
-> IO Bool | returns `True` if tree lines are drawn in `treeView`, `False` otherwise.

Returns whether or not tree lines are drawn in `treeView`.

- Available since Gtk+ version 2.10

treeViewSetEnableTreeLines

Arguments

:: TreeViewClass self |
=> self |
-> Bool | `enabled` - `True` to enable tree line drawing, `False` otherwise.
-> IO () |

Sets whether to draw lines interconnecting the expanders in `treeView`. This does not have any visible effects for lists.

- Available since Gtk+ version 2.10

treeViewGetGridLines

Arguments

:: TreeViewClass self |
=> self |
-> IO TreeViewGridLines | returns a `TreeViewGridLines` value indicating which grid lines are enabled.

Returns which grid lines are enabled in `treeView`.

- Available since Gtk+ version 2.10

treeViewSetGridLines

Arguments

:: TreeViewClass self |
=> self |
-> TreeViewGridLines | `gridLines` - a `TreeViewGridLines` value indicating which grid lines to enable.
-> IO () |

Sets which grid lines to draw in `treeView`.

- Available since Gtk+ version 2.10

treeViewSetTooltipRow

Arguments

:: TreeViewClass self |
=> self |
-> Tooltip | the `tooltip`
-> TreePath | `path` - the position of the `tooltip`
-> IO () |

Sets the tip area of `tooltip` to be the area covered by `path`. See also `treeViewTooltipColumn` for a simpler alternative. See also `tooltipSetTipArea`.

treeViewSetTooltipCell

Arguments

:: (TreeViewClass self, TreeViewColumnClass col, CellRendererClass renderer) |
=> self |
-> Tooltip | the `tooltip`
-> Maybe TreePath | `path` at which the tip should be shown
-> Maybe col | `column` at which the tip should be shown
-> Maybe renderer | the `renderer` for which to show the tip
-> IO () |

Sets the tip area of tooltip to the area path, column and cell have in common. For example if `path` is `Nothing` and `column` is set, the tip area will be set to the full area covered by column. See also `tooltipSetTipArea`. Note that if `path` is not specified and `cell` is set and part of a column containing the expander, the tooltip might not show and hide at the correct position. In such cases `path` must be set to the current node under the mouse cursor for this function to operate correctly. See also `treeViewTooltipColumn` for a simpler alternative.

treeViewGetTooltipContext

Arguments

:: TreeViewClass self |
=> self |
-> Maybe Point | `point` - the coordinates of the mouse or `Nothing` if a keyboard tooltip is to be generated
-> IO (Maybe TreeIter) | `Just iter` if a tooltip should be shown for that row

This function is supposed to be used in a `widgetQueryTooltip` signal handler for this `TreeView`. The `point` value which is received in the signal handler should be passed to this function without modification. A return value of `Just iter` indicates that there is a tree view row at the given coordinates (if `Just (x,y)` is passed in, denoting a mouse position), resp. the cursor row (if `Nothing` is passed in, denoting a keyboard request).

# Attributes

treeViewModel :: (TreeViewClass self, TreeModelClass model) => ReadWriteAttr self (Maybe TreeModel) model

The model for the tree view.

treeViewHAdjustment :: TreeViewClass self => Attr self (Maybe Adjustment)

Horizontal Adjustment for the widget.

treeViewVAdjustment :: TreeViewClass self => Attr self (Maybe Adjustment)

Vertical Adjustment for the widget.

treeViewHeadersVisible :: TreeViewClass self => Attr self Bool

Show the column header buttons.

Default value: `True`

treeViewHeadersClickable :: TreeViewClass self => Attr self Bool

Column headers respond to click events.

Default value: `False`

treeViewExpanderColumn :: TreeViewClass self => ReadWriteAttr self TreeViewColumn (Maybe TreeViewColumn)

Set the column for the expander column.

treeViewReorderable :: TreeViewClass self => Attr self Bool

View is reorderable.

Default value: `False`

treeViewRulesHint :: TreeViewClass self => Attr self Bool

Set a hint to the theme engine to draw rows in alternating colors.

Default value: `False`

treeViewEnableSearch :: TreeViewClass self => Attr self Bool

View allows user to search through columns interactively.

Default value: `True`

treeViewSearchColumn :: TreeViewClass self => Attr self (ColumnId row String)

Model column to search through when searching through code.

Default value: `invalidColumnId`

treeViewFixedHeightMode :: TreeViewClass self => Attr self Bool

Setting the `treeViewFixedHeightMode` property to `True` speeds up `TreeView` by assuming that all rows have the same height. Only enable this option if all rows are the same height. Please see `treeViewSetFixedHeightMode` for more information on this option.

Default value: `False`

- Available since Gtk+ version 2.4

treeViewHoverSelection :: TreeViewClass self => Attr self Bool

Enables of disables the hover selection mode of `treeView`. Hover selection makes the selected row follow the pointer. Currently, this works only for the selection modes `SelectionSingle` and `SelectionBrowse`.

This mode is primarily intended for `TreeView`s in popups, e.g. in `ComboBox` or `EntryCompletion`.

Default value: `False`

- Available since Gtk+ version 2.6

treeViewHoverExpand :: TreeViewClass self => Attr self Bool

Enables of disables the hover expansion mode of `treeView`. Hover expansion makes rows expand or collaps if the pointer moves over them.

This mode is primarily intended for `TreeView`s in popups, e.g. in `ComboBox` or `EntryCompletion`.

Default value: `False`

- Available since Gtk+ version 2.6

treeViewShowExpanders :: TreeViewClass self => Attr self Bool

View has expanders.

Default value: `True`

treeViewLevelIndentation :: TreeViewClass self => Attr self Int

Extra indentation for each level.

Allowed values: >= 0

Default value: 0

treeViewRubberBanding :: TreeViewClass self => Attr self Bool

Whether to enable selection of multiple items by dragging the mouse pointer.

Default value: `False`

treeViewEnableGridLines :: TreeViewClass self => Attr self TreeViewGridLines

Whether grid lines should be drawn in the tree view.

Default value: `TreeViewGridLinesNone`

treeViewEnableTreeLines :: TreeViewClass self => Attr self Bool

Whether tree lines should be drawn in the tree view.

Default value: `False`

treeViewGridLines :: TreeViewClass self => Attr self TreeViewGridLines

'gridLines' property. See `treeViewGetGridLines` and `treeViewSetGridLines`

treeViewSearchEntry :: (TreeViewClass self, EntryClass entry) => ReadWriteAttr self (Maybe Entry) (Maybe entry)

'searchEntry' property. See `treeViewGetSearchEntry` and `treeViewSetSearchEntry`

treeViewTooltipColumn :: TreeViewClass self => Attr self (ColumnId row String)

The column for which to show tooltips.

If you only plan to have simple (text-only) tooltips on full rows, you can use this function to have `TreeView` handle these automatically for you. `column` should be set to a column in model containing the tooltip texts, or `-1` to disable this feature. When enabled, `widgetHasTooltip` will be set to `True` and this view will connect to the `widgetQueryTooltip` signal handler.

Note that the signal handler sets the text as `Markup`, so &, <, etc have to be escaped in the text.

Default value: `invalidColumnId`

# Signals

columnsChanged :: TreeViewClass self => Signal self (IO ())

The number of columns of the treeview has changed.

cursorChanged :: TreeViewClass self => Signal self (IO ())

The position of the cursor (focused cell) has changed.

rowCollapsed :: TreeViewClass self => Signal self (TreeIter -> TreePath -> IO ())

The given row has been collapsed (child nodes are hidden).

rowExpanded :: TreeViewClass self => Signal self (TreeIter -> TreePath -> IO ())

The given row has been expanded (child nodes are shown).

rowActivated :: TreeViewClass self => Signal self (TreePath -> TreeViewColumn -> IO ())

A row was activated.

- Activation usually means the user has pressed return on a row.

testCollapseRow :: TreeViewClass self => Signal self (TreeIter -> TreePath -> IO Bool)

The given row is about to be collapsed (hide its children nodes). Use this signal if you need to control the collapsibility of individual rows.

testExpandRow :: TreeViewClass self => Signal self (TreeIter -> TreePath -> IO Bool)

The given row is about to be expanded (show its children nodes). Use this signal if you need to control the expandability of individual rows.

# Deprecated

treeViewWidgetToTreeCoords

Arguments

:: TreeViewClass self |
=> self |
-> Point | `(wx, wy)` - widget X and Y coordinates
-> IO Point | `(tx, ty)` returns tree X and Y coordinates

`treeViewWidgetToTreeCoords` has been deprecated since version 2.12 and should not be used in newly-written code. Due to historial reasons the name of this function is incorrect. For converting coordinates relative to the widget to bin window coordinates, please see `treeViewConvertWidgetToBinWindowCoords`.

Converts bin window coordinates to coordinates for the tree (the full scrollable area of the tree).

treeViewTreeToWidgetCoords

Arguments

:: TreeViewClass self |
=> self |
-> Point | `(tx, ty)` - tree X and Y coordinates
-> IO Point | `(wx, wy)` returns widget X and Y coordinates

`treeViewTreeToWidgetCoords` has been deprecated since version 2.12 and should not be used in newly-written code. Due to historial reasons the name of this function is incorrect. For converting bin window coordinates to coordinates relative to bin window, please see `treeViewConvertBinWindowToWidgetCoords`.

Converts tree coordinates (coordinates in full scrollable area of the tree) to bin window coordinates.

onColumnsChanged :: TreeViewClass self => self -> IO () -> IO (ConnectId self)

The user has dragged a column to another position.

afterColumnsChanged :: TreeViewClass self => self -> IO () -> IO (ConnectId self)

The user has dragged a column to another position.

onCursorChanged :: TreeViewClass self => self -> IO () -> IO (ConnectId self)

The cursor in the tree has moved.

afterCursorChanged :: TreeViewClass self => self -> IO () -> IO (ConnectId self)

The cursor in the tree has moved.

onRowActivated :: TreeViewClass self => self -> (TreePath -> TreeViewColumn -> IO ()) -> IO (ConnectId self)

A row was activated.

- Activation usually means the user has pressed return on a row.

afterRowActivated :: TreeViewClass self => self -> (TreePath -> TreeViewColumn -> IO ()) -> IO (ConnectId self)

A row was activated.

- Activation usually means the user has pressed return on a row.

onRowCollapsed :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO ()) -> IO (ConnectId self)

Children of this node were hidden.

afterRowCollapsed :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO ()) -> IO (ConnectId self)

Children of this node were hidden.

onRowExpanded :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO ()) -> IO (ConnectId self)

Children of this node are made visible.

afterRowExpanded :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO ()) -> IO (ConnectId self)

Children of this node are made visible.

onStartInteractiveSearch :: TreeViewClass self => self -> IO () -> IO (ConnectId self)

The user wants to search interactively.

- Connect to this signal if you want to provide you own search facility. Note that you must handle all keyboard input yourself.

afterStartInteractiveSearch :: TreeViewClass self => self -> IO () -> IO (ConnectId self)

The user wants to search interactively.

- Connect to this signal if you want to provide you own search facility. Note that you must handle all keyboard input yourself.

onTestCollapseRow :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO Bool) -> IO (ConnectId self)

Determine if this row should be collapsed.

- If the application connects to this function and returns `False`, the specifc row will not be altered.

afterTestCollapseRow :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO Bool) -> IO (ConnectId self)

Determine if this row should be collapsed.

- If the application connects to this function and returns `False`, the specifc row will not be altered.

onTestExpandRow :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO Bool) -> IO (ConnectId self)

Determine if this row should be expanded.

- If the application connects to this function and returns `False`, the specifc row will not be altered.

afterTestExpandRow :: TreeViewClass self => self -> (TreeIter -> TreePath -> IO Bool) -> IO (ConnectId self)

Determine if this row should be expanded.

- If the application connects to this function and returns `False`, the specifc row will not be altered.