Struct newt::callbacks::EntryFilter

pub struct EntryFilter<'a, FN: 'a, T: 'a> where
    FN: FnMut(&Entry, Option<&T>, char, i32) -> char,  { /* fields omitted */ }

A callback used to filter text entered into an Entry component.

The function or closure associated with the callback should be defined as follows:

fn(entry: &Entry, data: Option<&T>, ch: char, cursor_pos: i32) -> char

• entry - The Entry being filtered.
• data - The optional user data provided.
• ch - The character entered into the Entry.
• cursor_pos - The current cursor position in the Entry.

The function should return the character to be entered into the Entry field or '\0' to ignore the entered character.

See the example under Entry.

Implementations

impl<'a, FN: 'a, T: 'a> EntryFilter<'a, FN, T> where
    FN: FnMut(&Entry, Option<&T>, char, i32) -> char, 

pub fn new(
    entry: &'a Entry,
    function: FN,
    data: Option<T>
) -> Box<EntryFilter<'a, FN, T>>

Create a new EntryFilter.

Creates a new EntryFilter associated with the Entry entry. The function function will be called for each character entered.

• entry - The Entry to associate with the callback.
• function - The function or closure to be called when a character is entered.
• data - The optonal user data to pass to the function.

pub fn add_entry(&mut self, entry: &'a Entry, data: Option<T>)

Associate another Entry with the EntryFilter.

• entry - The Entry to associate with the callback.
• data - The optonal user data to pass to the function.