Method process_text_input_char

src/engine.rs:5980–6016

Process a character input event for the focused text input. Returns true if the character was consumed by a text input.

(&mut self, ch: char)

    /// Process a character input event for the focused text input.
    /// Returns true if the character was consumed by a text input.
    pub fn process_text_input_char(&mut self, ch: char) -> bool {
        if !self.is_text_input_focused() {
            return false;
        }
        let elem_id = self.focused_element_id;

        // Get max_length from current config (if available this frame)
        let max_length = self.text_input_element_ids.iter()
            .position(|&id| id == elem_id)
            .and_then(|idx| self.text_input_configs.get(idx))
            .and_then(|cfg| cfg.max_length);

        if let Some(state) = self.text_edit_states.get_mut(&elem_id) {
            let old_text = state.text.clone();
            state.push_undo(crate::text_input::UndoActionKind::InsertChar);
            #[cfg(feature = "text-styling")]
            {
                state.insert_char_styled(ch, max_length);
            }
            #[cfg(not(feature = "text-styling"))]
            {
                state.insert_text(&ch.to_string(), max_length);
            }
            if state.text != old_text {
                let new_text = state.text.clone();
                // Fire on_changed callback
                if let Some(item) = self.layout_element_map.get_mut(&elem_id) {
                    if let Some(ref mut callback) = item.on_text_changed_fn {
                        callback(&new_text);
                    }
                }
            }
            true
        } else {
            false
        }
    }

    /// Process a key event for the focused text input.
    /// `action` specifies which editing action to perform.