FileFilterRef

public struct FileFilterRef : FileFilterProtocol, GWeakCapturing

A GtkFileFilter can be used to restrict the files being shown in a GtkFileChooser. Files can be filtered based on their name (with gtk_file_filter_add_pattern()), on their mime type (with gtk_file_filter_add_mime_type()), or by a custom filter function (with gtk_file_filter_add_custom()).

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, filters are used by adding them to a GtkFileChooser, see gtk_file_chooser_add_filter(), but it is also possible to manually use a filter on a file with gtk_file_filter_filter().

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 gtk_file_filter_add_mime_type() or gtk_file_filter_add_pattern().

An example of a UI definition fragment specifying GtkFileFilter rules:

<object class="GtkFileFilter">
  <mime-types>
    <mime-type>text/plain</mime-type>
    <mime-type>image/ *</mime-type>
  </mime-types>
  <patterns>
    <pattern>*.txt</pattern>
    <pattern>*.png</pattern>
  </patterns>
</object>

The FileFilterRef type acts as a lightweight Swift reference to an underlying GtkFileFilter instance. It exposes methods that can operate on this data type through FileFilterProtocol conformance. Use FileFilterRef only as an unowned reference to an existing GtkFileFilter instance.

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  • ptr 
    Untyped pointer to the underlying `GtkFileFilter` instance.

    For type-safe access, use the generated, typed pointer file_filter_ptr property instead.

    Declaration

    Swift

    public let ptr: UnsafeMutableRawPointer!
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FileFilter Class

  • Designated initialiser from the underlying C data type

    Declaration

    Swift

    @inlinable
init(_ p: UnsafeMutablePointer<GtkFileFilter>)
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  • Designated initialiser from a constant pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
init(_ p: UnsafePointer<GtkFileFilter>)
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  • Conditional initialiser from an optional pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
init!(_ maybePointer: UnsafeMutablePointer<GtkFileFilter>?)
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  • Conditional initialiser from an optional, non-mutable pointer to the underlying C data type

    Declaration

    Swift

    @inlinable
init!(_ maybePointer: UnsafePointer<GtkFileFilter>?)
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  • Conditional initialiser from an optional gpointer

    Declaration

    Swift

    @inlinable
init!(gpointer g: gpointer?)
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  • Conditional initialiser from an optional, non-mutable gconstpointer

    Declaration

    Swift

    @inlinable
init!(gconstpointer g: gconstpointer?)
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  • Reference intialiser for a related type that implements FileFilterProtocol

    Declaration

    Swift

    @inlinable
init<T>(_ other: T) where T : FileFilterProtocol
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  • This factory is syntactic sugar for setting weak pointers wrapped in GWeak<T>

    Declaration

    Swift

    @inlinable
static func unowned<T>(_ other: T) -> FileFilterRef where T : FileFilterProtocol
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  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to FileFilterProtocol.

    Declaration

    Swift

    @inlinable
init<T>(cPointer: UnsafeMutablePointer<T>)
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  • Unsafe typed initialiser. Do not use unless you know the underlying data type the pointer points to conforms to FileFilterProtocol.

    Declaration

    Swift

    @inlinable
init<T>(constPointer: UnsafePointer<T>)
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to FileFilterProtocol.

    Declaration

    Swift

    @inlinable
init(mutating raw: UnsafeRawPointer)
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to FileFilterProtocol.

    Declaration

    Swift

    @inlinable
init(raw: UnsafeMutableRawPointer)
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  • Unsafe untyped initialiser. Do not use unless you know the underlying data type the pointer points to conforms to FileFilterProtocol.

    Declaration

    Swift

    @inlinable
init(opaquePointer: OpaquePointer)
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  • 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 gtk_file_filter_add_mime_type(), gtk_file_filter_add_pattern(), or gtk_file_filter_add_custom(). To create a filter that accepts any file, use: (C Language Example):

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

    Declaration

    Swift

    @inlinable
init()
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  • Deserialize a file filter from an a{sv} variant in the format produced by gtk_file_filter_to_gvariant().

    Declaration

    Swift

    @inlinable
init<VariantT>(gvariant variant: VariantT) where VariantT : VariantProtocol
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  • Deserialize a file filter from an a{sv} variant in the format produced by gtk_file_filter_to_gvariant().

    Declaration

    Swift

    @inlinable
static func newFromG<VariantT>(gvariant variant: VariantT) -> FileFilterRef! where VariantT : VariantProtocol
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