feature2 implemented bug needs to be addressed
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Priec
290
canvas/examples/validation_patterns.rs
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290
canvas/examples/validation_patterns.rs
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// examples/validation_patterns.rs
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//! Example demonstrating position-based pattern filtering
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//!
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//! Run with: cargo run --example validation_patterns --features validation
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use canvas::{
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prelude::*,
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validation::{ValidationConfigBuilder, PatternFilters, PositionFilter, PositionRange, CharacterFilter},
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};
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#[derive(Debug)]
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struct DocumentForm {
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license_plate: String,
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phone_number: String,
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credit_card: String,
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custom_id: String,
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}
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impl DocumentForm {
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fn new() -> Self {
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Self {
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license_plate: String::new(),
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phone_number: String::new(),
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credit_card: String::new(),
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custom_id: String::new(),
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}
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}
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}
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impl DataProvider for DocumentForm {
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fn field_count(&self) -> usize {
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4
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}
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fn field_name(&self, index: usize) -> &str {
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match index {
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0 => "License Plate",
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1 => "Phone Number",
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2 => "Credit Card",
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3 => "Custom ID",
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_ => "",
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}
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}
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fn field_value(&self, index: usize) -> &str {
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match index {
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0 => &self.license_plate,
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1 => &self.phone_number,
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2 => &self.credit_card,
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3 => &self.custom_id,
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_ => "",
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}
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}
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fn set_field_value(&mut self, index: usize, value: String) {
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match index {
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0 => self.license_plate = value,
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1 => self.phone_number = value,
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2 => self.credit_card = value,
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3 => self.custom_id = value,
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_ => {}
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}
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}
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fn validation_config(&self, field_index: usize) -> Option<ValidationConfig> {
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match field_index {
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0 => {
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// License plate: AB123 (2 letters, 3 numbers) - USER DEFINED
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let license_plate_pattern = PatternFilters::new()
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.add_filter(PositionFilter::new(
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PositionRange::Range(0, 1),
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CharacterFilter::Alphabetic,
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))
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.add_filter(PositionFilter::new(
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PositionRange::Range(2, 4),
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CharacterFilter::Numeric,
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));
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Some(ValidationConfigBuilder::new()
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.with_pattern_filters(license_plate_pattern)
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.build())
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}
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1 => {
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// Phone number: 123-456-7890 - USER DEFINED
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let phone_pattern = PatternFilters::new()
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.add_filter(PositionFilter::new(
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PositionRange::Multiple(vec![0,1,2,4,5,6,8,9,10,11]),
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CharacterFilter::Numeric,
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))
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.add_filter(PositionFilter::new(
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PositionRange::Multiple(vec![3, 7]),
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CharacterFilter::Exact('-'),
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));
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Some(ValidationConfigBuilder::new()
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.with_pattern_filters(phone_pattern)
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.build())
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}
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2 => {
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// Credit card: 1234-5678-9012-3456 - USER DEFINED
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let credit_card_pattern = PatternFilters::new()
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.add_filter(PositionFilter::new(
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PositionRange::Multiple(vec![0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18]),
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CharacterFilter::Numeric,
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))
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.add_filter(PositionFilter::new(
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PositionRange::Multiple(vec![4, 9, 14]),
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CharacterFilter::Exact('-'),
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));
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Some(ValidationConfigBuilder::new()
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.with_pattern_filters(credit_card_pattern)
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.build())
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}
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3 => {
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// Custom ID: First 2 letters, rest alphanumeric - USER DEFINED
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let custom_id_pattern = PatternFilters::new()
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.add_filter(PositionFilter::new(
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PositionRange::Range(0, 1),
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CharacterFilter::Alphabetic,
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))
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.add_filter(PositionFilter::new(
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PositionRange::From(2),
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CharacterFilter::Alphanumeric,
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));
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Some(ValidationConfigBuilder::new()
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.with_pattern_filters(custom_id_pattern)
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.build())
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}
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_ => None,
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}
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}
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}
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fn main() -> Result<(), Box<dyn std::error::Error>> {
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println!("🎯 Canvas Pattern Filtering Demo");
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println!("=================================");
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println!();
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let form = DocumentForm::new();
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let mut editor = FormEditor::new(form);
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println!("📋 Form initialized with USER-DEFINED pattern validation rules:");
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for i in 0..editor.data_provider().field_count() {
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let field_name = editor.data_provider().field_name(i);
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println!(" • {}: Position-based pattern filtering (user-defined)", field_name);
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}
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println!();
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// Test License Plate (Field 0)
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println!("1. Testing USER-DEFINED License Plate pattern (AB123 - 2 letters, 3 numbers):");
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// Valid license plate
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println!(" Entering valid license plate 'AB123':");
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for ch in "AB123".chars() {
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match editor.insert_char(ch) {
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Ok(_) => println!(" '{}' ✓ accepted", ch),
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Err(e) => println!(" '{}' ✗ rejected: {}", ch, e),
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}
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}
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println!(" Result: '{}'", editor.current_text());
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println!();
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// Clear and test invalid pattern
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editor.clear_current_field();
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println!(" Testing invalid pattern 'A1123':");
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for (i, ch) in "A1123".chars().enumerate() {
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match editor.insert_char(ch) {
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Ok(_) => println!(" Position {}: '{}' ✓ accepted", i, ch),
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Err(e) => println!(" Position {}: '{}' ✗ rejected: {}", i, ch, e),
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}
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}
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println!(" Result: '{}'", editor.current_text());
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println!();
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// Move to phone number field
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editor.move_to_next_field()?;
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// Test Phone Number (Field 1)
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println!("2. Testing USER-DEFINED Phone Number pattern (123-456-7890):");
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// Valid phone number
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println!(" Entering valid phone number '123-456-7890':");
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for (i, ch) in "123-456-7890".chars().enumerate() {
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match editor.insert_char(ch) {
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Ok(_) => println!(" Position {}: '{}' ✓ accepted", i, ch),
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Err(e) => println!(" Position {}: '{}' ✗ rejected: {}", i, ch, e),
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}
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}
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println!(" Result: '{}'", editor.current_text());
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println!();
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// Move to credit card field
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editor.move_to_next_field()?;
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// Test Credit Card (Field 2)
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println!("3. Testing USER-DEFINED Credit Card pattern (1234-5678-9012-3456):");
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// Valid credit card (first few characters)
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println!(" Entering valid credit card start '1234-56':");
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for (i, ch) in "1234-56".chars().enumerate() {
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match editor.insert_char(ch) {
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Ok(_) => println!(" Position {}: '{}' ✓ accepted", i, ch),
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Err(e) => println!(" Position {}: '{}' ✗ rejected: {}", i, ch, e),
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}
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}
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println!(" Result: '{}'", editor.current_text());
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println!();
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// Test invalid character at dash position
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println!(" Testing invalid character at dash position:");
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editor.clear_current_field();
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for (i, ch) in "1234A56".chars().enumerate() {
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match editor.insert_char(ch) {
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Ok(_) => println!(" Position {}: '{}' ✓ accepted", i, ch),
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Err(e) => println!(" Position {}: '{}' ✗ rejected: {}", i, ch, e),
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}
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}
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println!(" Result: '{}'", editor.current_text());
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println!();
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// Move to custom ID field
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editor.move_to_next_field()?;
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// Test Custom ID (Field 3)
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println!("4. Testing USER-DEFINED Custom ID pattern (2 letters + alphanumeric):");
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// Valid custom ID
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println!(" Entering valid custom ID 'AB123def':");
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for (i, ch) in "AB123def".chars().enumerate() {
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match editor.insert_char(ch) {
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Ok(_) => println!(" Position {}: '{}' ✓ accepted", i, ch),
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Err(e) => println!(" Position {}: '{}' ✗ rejected: {}", i, ch, e),
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}
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}
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println!(" Result: '{}'", editor.current_text());
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println!();
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// Test invalid pattern
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editor.clear_current_field();
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println!(" Testing invalid pattern '1B123def' (number in first position):");
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for (i, ch) in "1B123def".chars().enumerate() {
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match editor.insert_char(ch) {
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Ok(_) => println!(" Position {}: '{}' ✓ accepted", i, ch),
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Err(e) => println!(" Position {}: '{}' ✗ rejected: {}", i, ch, e),
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}
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}
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println!(" Result: '{}'", editor.current_text());
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println!();
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// Show validation summary
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println!("📊 Final validation summary:");
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let summary = editor.validation_summary();
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println!(" Total fields with validation: {}", summary.total_fields);
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println!(" Validated fields: {}", summary.validated_fields);
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println!(" Valid fields: {}", summary.valid_fields);
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println!(" Fields with warnings: {}", summary.warning_fields);
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println!(" Fields with errors: {}", summary.error_fields);
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println!();
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// Show field-by-field status
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println!("📝 Field-by-field validation status:");
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for i in 0..editor.data_provider().field_count() {
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let field_name = editor.data_provider().field_name(i);
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let field_value = editor.data_provider().field_value(i);
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if let Some(result) = editor.field_validation(i) {
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println!(" {} [{}]: {} - {:?}",
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field_name,
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field_value,
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if result.is_acceptable() { "✓" } else { "✗" },
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result
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);
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} else {
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println!(" {} [{}]: (not validated)", field_name, field_value);
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}
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}
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println!();
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println!("✨ USER-DEFINED Pattern filtering demo completed!");
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println!("Key Features Demonstrated:");
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println!(" • Position-specific character filtering (USER DEFINES PATTERNS)");
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println!(" • Library provides CharacterFilter: Alphabetic, Numeric, Alphanumeric, Exact, OneOf, Custom");
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println!(" • User defines all patterns using library's building blocks");
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println!(" • Real-time validation during typing");
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println!(" • Flexible position ranges (single, range, from, multiple)");
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Ok(())
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}
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