ruby-****@lists*****
ruby-****@lists*****
2003年 4月 28日 (月) 17:03:06 JST
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= class Gtk::Statusbar
A Gtk::Statusbar is usually placed along the bottom of an application's main Gtk::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 Gtk::Statusbar#get_context_id, 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 Gtk::Statusbar.new.
Messages are added to the bar's stack with Gtk::Statusbar#push.
The message at the top of the stack can be removed using Gtk::Statusbar#pop. A message can be removed from anywhere in the stack if it's message_id was recorded at the time it was added. This is done using Gtk::Statusbar#remove.
== super class
* ((<Gtk::HBox>))
== class methods
--- Gtk::Statusbar.new
Creates a new Gtk::Statusbar ready for messages.
* Returns: the new Gtk::Statusbar.
== public instance methods
--- get_context_id(context_description)
Returns a new context identifier, given a description of the actual context.
* context_description : textual description of what context the new message is being used in.
* Returns : an integer id.
--- push(context_id, text)
Pushes a new message onto a statusbar's stack.
* context_id: the message's context id, as returned by Gtk::Statusbar#get_context_id.
* text: the message to add to the statusbar.
* Returns: the message's new message id for use with Gtk::Statusbar#remove.
--- pop(context_id)
Removes the message at the top of a Gtk::StatusBar's stack.
* context_id : a context identifier.
* Returns: self
--- remove(context_id, message_id)
Forces the removal of a message from a statusbar's stack. The exact context_id and message_id must be specified.
* context_id: a context identifier.
* message_id: a message identifier, as returned by Gtk::Statusbar#push.
* Returns: self
--- has_resize_grip?
Returns whether the statusbar has a resize grip.
* Returns: true if the statusbar has a resize grip.
--- has_resize_grip=(setting)
Sets whether the statusbar has a resize grip. true by default.
* setting: true to have a resize grip.
* Returns: setting
--- set_has_resize_grip(setting)
Same as has_resize_grip=.
* setting: true to have a resize grip.
* Returns: self
== signals
--- text-popped: self, context_id, text
Is emitted whenever a new message is popped off a statusbar's stack.
* self: the object which received the signal.
* context_id: the context id of the relevant message/statusbar.
* text: the message that was just popped.
--- text-pushed: self, context_id, text
Is emitted whenever a new message gets pushed onto a statusbar's stack.
* context_id : the context id of the relevant message/statusbar.
* text : the message that was pushed.
== See Also
* Gtk::Dialog - another way of reporting information to the user.
((<Masao>))