gtkdialog: chooser widget reference

# chooser widget Gtk2: A GtkFileChooserWidget that uses GtkFileChooser Gtk3: A GtkFileChooserWidget that uses GtkFileChooser ## Definition
    <chooser tag_attr="value"...>
        <default>state</default>
        <variable>varname</variable>
        <height>value</height>
        <width>value</width>
        <sensitive>state</sensitive>
        <input>command</input>
        <input file>filename</input>
        <action signal="type">activity</action>...
        <output file>filename</output>
    </chooser>
“…” denotes acceptance of multiples of the same thing. ## Tag Attributes See the GtkFileChooserWidget widget and ancestor class properties. The following custom tag attributes are available:
Name | Description | Value | Since
--- | --- | --- | ---
block-function-signals | Block signal emissions from functions | `true` or `false` | 0.7.21
default-file[1] | Initial file selection | A file absolute path | 0.8.5
fs-filters[2] | fileselect function pattern file filters | pattern`|`pattern`|`… | 0.8.5
fs-filters-mime[2] | fileselect function mime-type file filters | ... (common types) | 0.8.5
## Directives Some of these may have tag attribute equivalents.
Name | Description | Contents | Since
--- | --- | --- | ---
default | Initial directory | A directory path, empty for the run directory |
variable | Variable name |  |
variable export=“false” | Variable name, not exported to shell |  | 0.8.3
height[3] | Initial minimum height | An integer > `0` or `-1` to ignore |
width[3] | Initial minimum width | An integer > `0` or `-1` to ignore |
sensitive | Sensitive state | `true` or `false` |
input[4] | Data input source | Shell command |
input file[4] | Data input source | Filename |
action signal=“type” | Execute command on signal | Shell command |
action signal=“type” | Perform function on signal | function:parameter |
action signal=“type” condition=“type” | Execute command on signal conditionally | Shell command | 0.8.3
action signal=“type” condition=“type” | Perform function on signal conditionally | function:parameter | 0.8.3
output file[4] | Data output target | Filename |
## Signals The default signal is "file-activated" (Gtk2, Gtk3) emitted when the user "activates" a file in the file chooser. This can happen by double-clicking on a file in the file list, or by pressing Enter. The "selection-changed" signal is emitted when there is a change in the set of selected files in the file list. The "update-preview" signal is emitted when the preview in a file chooser should be regenerated. For example, this can happen when the currently selected file changes. This signal is still emitted even though the current implementation does not display a preview of the selected file. The "current-folder-changed" signal is emitted when the current folder in a chooser widget changes. The "confirm-overwrite" signal is emitted whenever it would be appropriate to present a confirmation dialog when the user has selected a file name that already exists. The current implementation never emits this signal. The following signals are connected-up for all widgets: Gtk2: 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 Gtk3: 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 | 0.8.1
hide | Hide widget | Variable name | 0.8.1
grabfocus | Grab input focus | Variable name | 0.8.1
refresh | Reload input data | Variable name |
save | Save widget data | Variable name |
clear | Remove all widget data | Variable name |
removeselected | Remove selected 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 | 0.8.1
## 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
variable_is_true(argument) | Value of widget | Variable name | 0.8.5
variable_is_false(argument) | Value of widget | Variable name | 0.8.5
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 The default file path takes precedence over the default directory. Versions < 0.4.8+ ignore this custom tag. Specify both the default file path and the default directory as a fall-back. Files that match `fs-filters` are listed after files that match `fs-filters-mine`. This widget has no default dimensions. Use the `height` and/or `width` directives. For `input` and `output` directives data is always an absolute file path, as it can be set with the `default-file` custom tag. button, checkbox, chooser, colorbutton, comboboxentry, comboboxtext, combobox, edit, entry, eventbox, expander, fontbutton, frame, hbox, hscale, hseparator, list, menubar, menuitemseparator, menuitem, menu, notebook, pixmap, progressbar, radiobutton, separator, spinbutton, statusbar, table, terminal, text, timer, togglebutton, tree, vbox, vscale, vseparator, window,