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.

Methods

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.