Enum zng::image::ImageSourceFilter

pub enum ImageSourceFilter<U> {
    BlockAll,
    AllowAll,
    Custom(Arc<dyn Fn(&U) -> bool + Sync + Send>),
}

Represents a PathFilter and UriFilter.

Variants

BlockAll

Block all requests of this type.

AllowAll

Allow all requests of this type.

Custom(Arc<dyn Fn(&U) -> bool + Sync + Send>)

Custom filter, returns true to allow a request, false to block.

Implementations

impl<U> ImageSourceFilter<U>

pub fn custom( allow: impl Fn(&U) -> bool + Send + Sync + 'static, ) -> ImageSourceFilter<U>

New Custom filter.

pub fn and(self, other: ImageSourceFilter<U>) -> ImageSourceFilter<U>

where U: 'static,

Combine self with other, if they both are Custom, otherwise is BlockAll if any is BlockAll, else is AllowAll if any is AllowAll.

If both are Custom both filters must allow a request to pass the new filter.

pub fn or(self, other: ImageSourceFilter<U>) -> ImageSourceFilter<U>

where U: 'static,

Combine self with other, if they both are Custom, otherwise is AllowAll if any is AllowAll, else is BlockAll if any is BlockAll.

If both are Custom at least one of the filters must allow a request to pass the new filter.

pub fn allows(&self, item: &U) -> bool

Returns true if the filter allows the request.

impl ImageSourceFilter<PathBuf>

pub fn allow_dir(dir: impl AsRef<Path>) -> ImageSourceFilter<PathBuf>

Allow any file inside dir or sub-directories of dir.

pub fn allow_ext(ext: impl Into<OsString>) -> ImageSourceFilter<PathBuf>

Allow any path with the ext extension.

pub fn allow_current_dir() -> ImageSourceFilter<PathBuf>

Allow any file inside the env::current_dir or sub-directories.

Note that the current directory can be changed and the filter always uses the fresh current directory, use allow_dir to create a filter the always points to the current directory at the filter creation time.

pub fn allow_exe_dir() -> ImageSourceFilter<PathBuf>

Allow any file inside the current executable directory or sub-directories.

impl ImageSourceFilter<Uri>

pub fn allow_host(host: impl Into<Txt>) -> ImageSourceFilter<Uri>

Allow any file from the host site.

Trait Implementations

impl<U> BitAnd for ImageSourceFilter<U>

where U: 'static,

type Output = ImageSourceFilter<U>

The resulting type after applying the & operator.

fn bitand( self, rhs: ImageSourceFilter<U>, ) -> <ImageSourceFilter<U> as BitAnd>::Output

Performs the & operation.

impl<U> BitAndAssign for ImageSourceFilter<U>

where U: 'static,

fn bitand_assign(&mut self, rhs: ImageSourceFilter<U>)

Performs the &= operation.

impl<U> BitOr for ImageSourceFilter<U>

where U: 'static,

type Output = ImageSourceFilter<U>

The resulting type after applying the | operator.

fn bitor( self, rhs: ImageSourceFilter<U>, ) -> <ImageSourceFilter<U> as BitOr>::Output

Performs the | operation.

impl<U> BitOrAssign for ImageSourceFilter<U>

where U: 'static,

fn bitor_assign(&mut self, rhs: ImageSourceFilter<U>)

Performs the |= operation.

impl<U> Clone for ImageSourceFilter<U>

where U: Clone,

fn clone(&self) -> ImageSourceFilter<U>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<U> Debug for ImageSourceFilter<U>

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<F> From<F> for ImageSourceFilter<PathBuf>

where F: Fn(&PathBuf) -> bool + Send + Sync + 'static,

fn from(custom: F) -> ImageSourceFilter<PathBuf>

Converts to this type from the input type.

impl<F> From<F> for ImageSourceFilter<Uri>

where F: Fn(&Uri) -> bool + Send + Sync + 'static,

fn from(custom: F) -> ImageSourceFilter<Uri>

Converts to this type from the input type.

impl<U> PartialEq for ImageSourceFilter<U>

fn eq(&self, other: &ImageSourceFilter<U>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.