FileFilter

class FileFilter(**properties: Any)

Superclasses: Filter, Object

Implemented Interfaces: Buildable

GtkFileFilter filters files by name or mime type.

GtkFileFilter can be used to restrict the files being shown in a GtkFileChooser. Files can be filtered based on their name (with add_pattern or add_suffix) or on their mime type (with add_mime_type).

Filtering by mime types handles aliasing and subclassing of mime types; e.g. a filter for text/plain also matches a file with mime type application/rtf, since application/rtf is a subclass of text/plain. Note that GtkFileFilter allows wildcards for the subtype of a mime type, so you can e.g. filter for image/*.

Normally, file filters are used by adding them to a GtkFileChooser (see add_filter), but it is also possible to manually use a file filter on any FilterListModel containing GFileInfo objects.

GtkFileFilter as GtkBuildable

The GtkFileFilter implementation of the GtkBuildable interface supports adding rules using the <mime-types> and <patterns> and <suffixes> elements and listing the rules within. Specifying a <mime-type> or <pattern> or <suffix> has the same effect as as calling add_mime_type or add_pattern or add_suffix.

An example of a UI definition fragment specifying GtkFileFilter rules:

<object class="GtkFileFilter">
  <property name="name" translatable="yes">Text and Images</property>
  <mime-types>
    <mime-type>text/plain</mime-type>
    <mime-type>image/ *</mime-type>
  </mime-types>
  <patterns>
    <pattern>*.txt</pattern>
  </patterns>
  <suffixes>
    <suffix>png</suffix>
  </suffixes>
</object>

Constructors

class FileFilter

classmethod new() → FileFilter

Creates a new GtkFileFilter with no rules added to it.

Such a filter doesn’t accept any files, so is not particularly useful until you add rules with add_mime_type, add_pattern, add_suffix or add_pixbuf_formats.

To create a filter that accepts any file, use:

GtkFileFilter *filter = gtk_file_filter_new ();
gtk_file_filter_add_pattern (filter, "*");

classmethod new_from_gvariant(variant: Variant) → FileFilter

Deserialize a file filter from a GVariant.

The variant must be in the format produced by to_gvariant.

Parameters:

variant – an a{sv} GVariant

Methods

class FileFilter

add_mime_type(mime_type: str) → None

Adds a rule allowing a given mime type to filter.

Parameters:

mime_type – name of a MIME type

add_pattern(pattern: str) → None

Adds a rule allowing a shell style glob to a filter.

Note that it depends on the platform whether pattern matching ignores case or not. On Windows, it does, on other platforms, it doesn’t.

Parameters:

pattern – a shell style glob

add_pixbuf_formats() → None

Adds a rule allowing image files in the formats supported by GdkPixbuf.

This is equivalent to calling add_mime_type for all the supported mime types.

add_suffix(suffix: str) → None

Adds a suffix match rule to a filter.

This is similar to adding a match for the pattern “*.``suffix``".

In contrast to pattern matches, suffix matches are always case-insensitive.

Added in version 4.4.

Parameters:

suffix – filename suffix to match

get_attributes() → list[str]

Gets the attributes that need to be filled in for the GFileInfo passed to this filter.

This function will not typically be used by applications; it is intended principally for use in the implementation of GtkFileChooser.

get_name() → str | None

Gets the human-readable name for the filter.

See set_name.

set_name(name: str | None = None) → None

Sets a human-readable name of the filter.

This is the string that will be displayed in the file chooser if there is a selectable list of filters.

Parameters:

name – the human-readable-name for the filter, or None to remove any existing name.

to_gvariant() → Variant

Serialize a file filter to an a{sv} variant.

Properties

class FileFilter

props.mime_types: list[str]

The type of the None singleton.

Added in version 4.10.

props.name: str

The type of the None singleton.

props.patterns: list[str]

The type of the None singleton.

Added in version 4.10.

props.suffixes: list[str]

The type of the None singleton.

Added in version 4.10.