expander

expander widget

A GtkExpander

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Definition

<expander tag_attr="value"...>
	widget
	<label>text</label>
	<variable>varname</variable>
	<input>command</input>...
	<input file>filename</input>...
	<sensitive>state</sensitive>
	<action>activity</action>...
	<action signal="type">activity</action>...
	<action function="type">parameter</action>...
	<output file>filename</output>
</expander>

"..." denotes acceptance of multiples of the same thing.

Tag Attributes

See the GtkExpander widget and ancestor class properties.

The following custom tag attributes are available:

Name	Description	Value	Since
space-expand	Pack widget expanding into space	true or false
space-fill	Pack widget filling space	true or false
block-function-signals	Block signal emissions from functions	true or false
file-monitor	Emit signal when input file(s) change	true or false
auto-refresh	Auto refresh when input file(s) change	true or false

Directives

Some of these may have tag attribute equivalents.

Name	Description	Contents	Since
label	Initial text
variable	Variable name
variable export="false"	Variable name, not exported to shell		0.8.3
input	Data input source	Shell command
input file	Data input source	Filename
sensitive	Sensitive state	true or false
action	Execute command on default signal	Shell command[1]
action	Perform function on default signal	function:parameter[1]
action signal="type"	Execute command on signal	Shell command[1]
action signal="type"	Perform function on signal	function:parameter[1]
action function="type"	Perform function on default signal	parameter[1]	0.8.3
action condition="type"	Execute command on default signal conditionally	Shell command[1]	0.8.3
action condition="type"	Perform function on default signal conditionally	function:parameter[1]	0.8.3
action signal="type" condition="type"	Execute command on signal conditionally	Shell command[1]	0.8.3
action signal="type" condition="type"	Perform function on signal conditionally	function:parameter[1]	0.8.3
action function="type" condition="type"	Perform function on default signal conditionally	parameter[1]	0.8.3
output file	Data output target	Filename

Signals

The default signal is "activate", emitted when the expander is activated.

The "file-changed" signal is emitted if file-monitor is true and the input file being monitored has changed.

The following signals are connected-up for all widgets:

button-press-event, button-release-event, configure-event, enter-notify-event, leave-notify-event, focus-in-event, focus-out-event, hide, show, realize, key-press-event, key-release-event, map-event, unmap-event

Functions

The following functions can be performed upon this widget by any widget capable of emitting signals:

Type	Description	Parameter	Since
enable	Sensitise widget	Variable name
disable	Desensitise widget	Variable name
show	Show widget	Variable name
hide	Hide widget	Variable name
activate	Activate widget	Variable name
grabfocus	Grab input focus	Variable name
refresh	Reload input data	Variable name
save	Save widget data	Variable name

The following general functions can be performed by any widget capable of emitting signals:

Type	Description	Parameter	Since
break	Break out of actions list	None	0.8.3
command	Execute command	Shell command
exit	Exit dialog	A value for the EXIT variable
closewindow	Close dialog	Variable name
launch	Launch dialog	Variable name
presentwindow	Present dialog	Variable name

Conditions

The following conditions can be used within the condition attribute of action directives:

Type	Description	Argument	Since
active_is_true(argument)	Active state of toggle widget	Variable name	0.8.3
active_is_false(argument)	Active state of toggle widget	Variable name	0.8.3
command_is_true(argument)	Output of shell command	Shell command	0.8.3
command_is_false(argument)	Output of shell command	Shell command	0.8.3
file_is_true(argument)	Contents of a file	Filename	0.8.3
file_is_false(argument)	Contents of a file	Filename	0.8.3
sensitive_is_true(argument)	Sensitive state of widget	Variable name	0.8.3
sensitive_is_false(argument)	Sensitive state of widget	Variable name	0.8.3
visible_is_true(argument)	Visible state of widget	Variable name	0.8.3
visible_is_false(argument)	Visible state of widget	Variable name	0.8.3

true means "true", "yes" or a non-zero value, false means "false", "no" or zero, therefore the shell command is expected to echo one of these values to stdout.

Notes

1. This widget's actions can be conditionally executed (based upon its expanded state) by prepending its contents with if true or if false although 0.8.3 introduced a dedicated condition attribute which may be more suitable.

This widget was introduced in version 0.8.1.

This widget is a container which accepts only one child widget so you may require that to be an hbox or vbox.

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