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.Display.Statusbar

Contents

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

Description

Report messages of minor importance to the user

Synopsis

- data Statusbar
- class HBoxClass o => StatusbarClass o
- castToStatusbar :: GObjectClass obj => obj -> Statusbar
- gTypeStatusbar :: GType
- toStatusbar :: StatusbarClass o => o -> Statusbar
- type ContextId = CUInt
- data MessageId
- statusbarNew :: IO Statusbar
- statusbarGetContextId :: StatusbarClass self => self -> String -> IO ContextId
- statusbarPush :: StatusbarClass self => self -> ContextId -> String -> IO MessageId
- statusbarPop :: StatusbarClass self => self -> ContextId -> IO ()
- statusbarRemove :: StatusbarClass self => self -> ContextId -> MessageId -> IO ()
- statusbarSetHasResizeGrip :: StatusbarClass self => self -> Bool -> IO ()
- statusbarGetHasResizeGrip :: StatusbarClass self => self -> IO Bool
- statusbarGetMessageArea :: StatusbarClass self => self -> IO Box
- statusbarRemoveAll :: StatusbarClass self => self -> Int -> IO ()
- statusbarHasResizeGrip :: StatusbarClass self => Attr self Bool
- textPopped :: StatusbarClass self => Signal self (ContextId -> String -> IO ())
- textPushed :: StatusbarClass self => Signal self (ContextId -> String -> IO ())
- onTextPopped :: StatusbarClass self => self -> (ContextId -> String -> IO ()) -> IO (ConnectId self)
- afterTextPopped :: StatusbarClass self => self -> (ContextId -> String -> IO ()) -> IO (ConnectId self)
- onTextPushed :: StatusbarClass self => self -> (ContextId -> String -> IO ()) -> IO (ConnectId self)
- afterTextPushed :: StatusbarClass self => self -> (ContextId -> String -> IO ()) -> IO (ConnectId self)

# Detail

A `Statusbar` is usually placed along the bottom of an application's main `Window`. It may provide a regular commentary of the application's status (as is usually the case in a web browser, for example), or may be used to simply output a message when the status changes, (when an upload is complete in an FTP client, for example). It may also have a resize grip (a triangular area in the lower right corner) which can be clicked on to resize the window containing the statusbar.

Status bars in Gtk+ maintain a stack of messages. The message at the top of the each bar's stack is the one that will currently be displayed.

Any messages added to a statusbar's stack must specify a context_id that is used to uniquely identify the source of a message. This context_id can be generated by `statusbarGetContextId`, given a message and the statusbar that it will be added to. Note that messages are stored in a stack, and when choosing which message to display, the stack structure is adhered to, regardless of the context identifier of a message.

Status bars are created using `statusbarNew`.

Messages are added to the bar's stack with `statusbarPush`.

The message at the top of the stack can be removed using `statusbarPop`. A message can be removed from anywhere in the stack if its message_id was recorded at the time it was added. This is done using `statusbarRemove`.

# Class Hierarchy

     | GObject
     | +----Object
     | +----Widget
     | +----Container
     | +----Box
     | +----HBox
     | +----Statusbar

# Types

data Statusbar

Instances

Eq Statusbar |
Ord Statusbar |
GObjectClass Statusbar |
StatusbarClass Statusbar |
HBoxClass Statusbar |
BoxClass Statusbar |
ContainerClass Statusbar |
WidgetClass Statusbar |
ObjectClass Statusbar |

class HBoxClass o => StatusbarClass o

Instances

StatusbarClass Statusbar |

castToStatusbar :: GObjectClass obj => obj -> Statusbar

gTypeStatusbar :: GType

toStatusbar :: StatusbarClass o => o -> Statusbar

type ContextId = CUInt

data MessageId

# Constructors

statusbarNew :: IO Statusbar

Creates a new `Statusbar` ready for messages.

# Methods

statusbarGetContextId

Arguments

:: StatusbarClass self |
=> self |
-> String | `contextDescription` - textual description of what context the new message is being used in.
-> IO ContextId | returns an id that can be used to later remove entries ^ from the Statusbar.

Returns a new context identifier, given a description of the actual context. This id can be used to later remove entries form the Statusbar.

statusbarPush

Arguments

:: StatusbarClass self |
=> self |
-> ContextId | `contextId` - the message's context id, as returned by `statusbarGetContextId`.
-> String | `text` - the message to add to the statusbar.
-> IO MessageId | returns the message's new message id for use with `statusbarRemove`.

Pushes a new message onto the Statusbar's stack. It will be displayed as long as it is on top of the stack.

statusbarPop

Arguments

:: StatusbarClass self |
=> self |
-> ContextId | `contextId` - the context identifier used when the message was added.
-> IO () |

Removes the topmost message that has the correct context.

statusbarRemove

Arguments

:: StatusbarClass self |
=> self |
-> ContextId | `contextId` - a context identifier.
-> MessageId | `messageId` - a message identifier, as returned by `statusbarPush`.
-> IO () |

Forces the removal of a message from a statusbar's stack. The exact `contextId` and `messageId` must be specified.

statusbarSetHasResizeGrip :: StatusbarClass self => self -> Bool -> IO ()

Sets whether the statusbar has a resize grip. `True` by default.

statusbarGetHasResizeGrip :: StatusbarClass self => self -> IO Bool

Returns whether the statusbar has a resize grip.

statusbarGetMessageArea :: StatusbarClass self => self -> IO Box

Retrieves the box containing the label widget.

statusbarRemoveAll

Arguments

:: StatusbarClass self |
=> self |
-> Int | `contextId` a context identifier
-> IO () |

Forces the removal of all messages from a statusbar's stack with the exact `contextId`.

- Available since Gtk+ version 2.22

# Attributes

statusbarHasResizeGrip :: StatusbarClass self => Attr self Bool

Whether the statusbar has a grip for resizing the toplevel window.

Default value: `True`

# Signals

textPopped :: StatusbarClass self => Signal self (ContextId -> String -> IO ())

Is emitted whenever a new message is popped off a statusbar's stack.

textPushed :: StatusbarClass self => Signal self (ContextId -> String -> IO ())

Is emitted whenever a new message gets pushed onto a statusbar's stack.

# Deprecated

onTextPopped :: StatusbarClass self => self -> (ContextId -> String -> IO ()) -> IO (ConnectId self)

Called if a message is removed.

afterTextPopped :: StatusbarClass self => self -> (ContextId -> String -> IO ()) -> IO (ConnectId self)

Called if a message is removed.

onTextPushed :: StatusbarClass self => self -> (ContextId -> String -> IO ()) -> IO (ConnectId self)

Called if a message is pushed on top of the stack.

afterTextPushed :: StatusbarClass self => self -> (ContextId -> String -> IO ()) -> IO (ConnectId self)

Called if a message is pushed on top of the stack.