Struct IconProviderHandle 

#[repr(C)]
pub struct IconProviderHandle {
    pub inner: Box<IconProviderInner>,
}

Icon provider stored in AppConfig.

This is a Box for C FFI compatibility. When App::run() is called, it gets converted to Arc<Mutex> and cloned to each window.

Icons are stored in a nested map: pack_name → (icon_name → RefAny) This allows:

• Multiple packs with different sources (app-images, material-icons, etc.)
• Easy unregistration of entire packs
• First-match-wins lookup across all packs

Fields

inner: Box<IconProviderInner>

Boxed inner data - Box is repr(C) compatible (single pointer)

Implementations

impl IconProviderHandle

pub fn new() -> IconProviderHandle

Create a new empty icon provider with the default (no-op) resolver.

Note: The default resolver in core crate returns an empty StyledDom. Use set_resolver() to set a proper resolver from the layout crate, or use with_resolver() to create with a custom resolver.

pub fn with_resolver( resolver: extern "C" fn(OptionRefAny, &StyledDom, &SystemStyle) -> StyledDom, ) -> IconProviderHandle

Create with a custom resolver callback

pub fn into_shared(self) -> Arc<Mutex<IconProviderInner>>

Convert this handle into an Arc<Mutex> for use in windows.

This consumes the Box and creates an Arc. Called by App::run() to create the shared icon provider that gets cloned to each window.

pub fn set_resolver( &mut self, resolver: extern "C" fn(OptionRefAny, &StyledDom, &SystemStyle) -> StyledDom, )

Set the resolver callback

pub fn register_icon(&mut self, pack_name: &str, icon_name: &str, data: RefAny)

Register a single icon in a pack (creates pack if needed)

pub fn unregister_icon(&mut self, pack_name: &str, icon_name: &str)

Unregister a single icon from a pack

pub fn unregister_pack(&mut self, pack_name: &str)

Unregister an entire icon pack

pub fn lookup(&self, icon_name: &str) -> Option<RefAny>

Look up an icon across all packs (first match wins)

pub fn has_icon(&self, icon_name: &str) -> bool

Check if an icon exists in any pack

pub fn list_packs(&self) -> Vec<String>

List all pack names

pub fn list_icons_in_pack(&self, pack_name: &str) -> Vec<String>

List all icon names in a specific pack

pub fn debug_lookup(&self, icon_name: &str) -> AzString

Debug lookup: returns detailed info about an icon’s RefAny contents

Trait Implementations

impl Clone for IconProviderHandle

fn clone(&self) -> IconProviderHandle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IconProviderHandle

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

Formats the value using the given formatter.

impl Default for IconProviderHandle

fn default() -> IconProviderHandle

Returns the “default value” for a type.