Copyright	Will Thompson Iñaki García Etxebarria and Jonas Platte
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria (garetxe@gmail.com)
Safe Haskell	None
Language	Haskell2010

GI.Gtk.Objects.FileFilter

Contents

Exported types
Methods

Description

A GtkFileFilter can be used to restrict the files being shown in a FileChooser. Files can be filtered based on their name (with fileFilterAddPattern), on their mime type (with fileFilterAddMimeType), or by a custom filter function (with fileFilterAddCustom).

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 FileFilter allows wildcards for the subtype of a mime type, so you can e.g. filter for image/\*.

Normally, filters are used by adding them to a FileChooser, see fileChooserAddFilter, but it is also possible to manually use a filter on a file with fileFilterFilter.

GtkFileFilter as GtkBuildable

The GtkFileFilter implementation of the GtkBuildable interface supports adding rules using the <mime-types>, <patterns> and <applications> elements and listing the rules within. Specifying a <mime-type> or <pattern> has the same effect as as calling fileFilterAddMimeType or fileFilterAddPattern.

An example of a UI definition fragment specifying GtkFileFilter rules: > >class="GtkFileFilter" > mime-types > mime-typetextplain<mime-type> > mime-typeimage *<mime-type> > /mime-types > patterns > pattern*.txt/pattern > pattern*.png/pattern > /patterns >/object

Synopsis

newtype FileFilter = FileFilter (ManagedPtr FileFilter)
class GObject o => IsFileFilter o
toFileFilter :: (MonadIO m, IsFileFilter o) => o -> m FileFilter
noFileFilter :: Maybe FileFilter
fileFilterAddCustom :: (HasCallStack, MonadIO m, IsFileFilter a) => a -> [FileFilterFlags] -> FileFilterFunc -> m ()
fileFilterAddMimeType :: (HasCallStack, MonadIO m, IsFileFilter a) => a -> Text -> m ()
fileFilterAddPattern :: (HasCallStack, MonadIO m, IsFileFilter a) => a -> Text -> m ()
fileFilterAddPixbufFormats :: (HasCallStack, MonadIO m, IsFileFilter a) => a -> m ()
fileFilterFilter :: (HasCallStack, MonadIO m, IsFileFilter a) => a -> FileFilterInfo -> m Bool
fileFilterGetName :: (HasCallStack, MonadIO m, IsFileFilter a) => a -> m (Maybe Text)
fileFilterGetNeeded :: (HasCallStack, MonadIO m, IsFileFilter a) => a -> m [FileFilterFlags]
fileFilterNew :: (HasCallStack, MonadIO m) => m FileFilter
fileFilterNewFromGvariant :: (HasCallStack, MonadIO m) => GVariant -> m FileFilter
fileFilterSetName :: (HasCallStack, MonadIO m, IsFileFilter a) => a -> Maybe Text -> m ()
fileFilterToGvariant :: (HasCallStack, MonadIO m, IsFileFilter a) => a -> m GVariant

Exported types

newtype FileFilter Source #

Memory-managed wrapper type.

Constructors

FileFilter (ManagedPtr FileFilter)

Instances

GObject FileFilter Source #
Instance details Defined in GI.Gtk.Objects.FileFilter Methods gobjectType :: FileFilter -> IO GType #
IsObject FileFilter Source #
Instance details Defined in GI.Gtk.Objects.FileFilter
IsBuildable FileFilter Source #
Instance details Defined in GI.Gtk.Objects.FileFilter
IsFileFilter FileFilter Source #
Instance details Defined in GI.Gtk.Objects.FileFilter

class GObject o => IsFileFilter o Source #

Type class for types which can be safely cast to FileFilter, for instance with toFileFilter.

Instances

(GObject a, (UnknownAncestorError FileFilter a :: Constraint)) => IsFileFilter a Source #
Instance details Defined in GI.Gtk.Objects.FileFilter
IsFileFilter FileFilter Source #
Instance details Defined in GI.Gtk.Objects.FileFilter

toFileFilter :: (MonadIO m, IsFileFilter o) => o -> m FileFilter Source #

Cast to FileFilter, for types for which this is known to be safe. For general casts, use castTo.

noFileFilter :: Maybe FileFilter Source #

A convenience alias for Nothing :: Maybe FileFilter.

Methods

addCustom

fileFilterAddCustom Source #

Arguments

:: (HasCallStack, MonadIO m, IsFileFilter a)
=> a	`filter`: a `FileFilter`
-> [FileFilterFlags]	`needed`: bitfield of flags indicating the information that the custom filter function needs.
-> FileFilterFunc	`func`: callback function; if the function returns `True`, then the file will be displayed.
-> m ()

Adds rule to a filter that allows files based on a custom callback function. The bitfield needed which is passed in provides information about what sorts of information that the filter function needs; this allows GTK+ to avoid retrieving expensive information when it isn’t needed by the filter.

Since: 2.4

addMimeType

fileFilterAddMimeType Source #

Arguments

:: (HasCallStack, MonadIO m, IsFileFilter a)
=> a	`filter`: A `FileFilter`
-> Text	`mimeType`: name of a MIME type
-> m ()

Adds a rule allowing a given mime type to filter.

Since: 2.4

addPattern

fileFilterAddPattern Source #

Arguments

:: (HasCallStack, MonadIO m, IsFileFilter a)
=> a	`filter`: a `FileFilter`
-> Text	`pattern`: a shell style glob
-> m ()

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

Since: 2.4

addPixbufFormats

fileFilterAddPixbufFormats Source #

Arguments

:: (HasCallStack, MonadIO m, IsFileFilter a)
=> a	`filter`: a `FileFilter`
-> m ()

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

Since: 2.6

filter

fileFilterFilter Source #

Arguments

:: (HasCallStack, MonadIO m, IsFileFilter a)
=> a	`filter`: a `FileFilter`
-> FileFilterInfo	`filterInfo`: a `FileFilterInfo` containing information about a file.
-> m Bool	Returns: `True` if the file should be displayed

Tests whether a file should be displayed according to filter. The FileFilterInfo filterInfo should include the fields returned from fileFilterGetNeeded.

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

Since: 2.4

getName

fileFilterGetName Source #

Arguments

:: (HasCallStack, MonadIO m, IsFileFilter a)
=> a	`filter`: a `FileFilter`
-> m (Maybe Text)	Returns: The human-readable name of the filter, or `Nothing`. This value is owned by GTK+ and must not be modified or freed.

Gets the human-readable name for the filter. See fileFilterSetName.

Since: 2.4

getNeeded

fileFilterGetNeeded Source #

Arguments

:: (HasCallStack, MonadIO m, IsFileFilter a)
=> a	`filter`: a `FileFilter`
-> m [FileFilterFlags]	Returns: bitfield of flags indicating needed fields when calling `fileFilterFilter`

Gets the fields that need to be filled in for the FileFilterInfo passed to fileFilterFilter

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

Since: 2.4

new

fileFilterNew Source #

Arguments

:: (HasCallStack, MonadIO m)
=> m FileFilter	Returns: a new `FileFilter`

Creates a new FileFilter with no rules added to it. Such a filter doesn’t accept any files, so is not particularly useful until you add rules with fileFilterAddMimeType, fileFilterAddPattern, or fileFilterAddCustom. To create a filter that accepts any file, use:

C code

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

Since: 2.4

newFromGvariant

fileFilterNewFromGvariant Source #

Arguments

:: (HasCallStack, MonadIO m)
=> GVariant	`variant`: an a{sv} `GVariant`
-> m FileFilter	Returns: a new `FileFilter` object

Deserialize a file filter from an a{sv} variant in the format produced by fileFilterToGvariant.

Since: 3.22

setName

fileFilterSetName Source #

Arguments

:: (HasCallStack, MonadIO m, IsFileFilter a)
=> a	`filter`: a `FileFilter`
-> Maybe Text	`name`: the human-readable-name for the filter, or `Nothing` to remove any existing name.
-> m ()

Sets the human-readable name of the filter; this is the string that will be displayed in the file selector user interface if there is a selectable list of filters.

Since: 2.4

toGvariant

fileFilterToGvariant Source #

Arguments

:: (HasCallStack, MonadIO m, IsFileFilter a)
=> a	`filter`: a `FileFilter`
-> m GVariant	Returns: a new, floating, `GVariant`

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

Since: 3.22