Growing ("Stepper") Form for Titanium

A form that expands / collapses based on the current input field. Also known as "growing form" or "stepper form".

Requirements

• Titanium SDK (npm i titanium)
• ES6+ enabled (<transpile>true</transpile>)

Installation

1. Via npm: npm i ti.growingform
2. Manually: Copy to app/lib/ (Alloy) or Resources/ (classic)

Example

import { GrowingForm, GrowingFormValidationRule, GrowingFormFieldType } from 'ti.growingform';

const config = {
	cells: [{
		title: 'Your Username',
		identifier: 'username',
		type: GrowingFormFieldType.TEXT,
		validate: GrowingFormValidationRule.LIVE,
		throttle: handleUsernameThrottle,
		options: {
			hintText: 'Enter username ...'
		}
	}, {
		title: 'Your Mail address',
		identifier: 'email',
		type: GrowingFormFieldType.TEXT,
		validate: GrowingFormValidationRule.EMAIL,
		options: {
			keyboardType: Ti.UI.KEYBOARD_TYPE_EMAIL,
			hintText: 'Enter mail address ...'
		}
	}, {
		title: 'Your Password',
		identifier: 'password',
		type: GrowingFormFieldType.TEXT,
		validate: value => {
			// CREDITS: https://www.thepolyglotdeveloper.com/2015/05/use-regex-to-test-password-strength-in-javascript/
			const strongRegex = new RegExp("^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9])(?=.*[!@#\$%\^&\*])(?=.{8,})");
			return strongRegex.test(value);
		},
		options: {
			passwordMask: true,
			hintText: 'Enter password ...'
		}
	}],
	options: {
    		// Style the underlaying table-view via it's header-view
    		tableTopMargin: 50,

		// Bullets
		bulletInactiveBackgroundColor: '#666',
		bulletInactiveTextColor: '#fff',
		bulletActiveBackgroundColor: '#000',
		bulletActiveTextColor: '#fff',

		// Step button (aka "Continue")
		stepButtonTitle: L('Continue', 'Continue'),
		stepButtonBackgroundColor: '#333',
		stepButtonTextColor: '#fff',
		stepButtonBorderRadius: 20,

		// Step button (aka "Submit")
		submitButtonTitle: L('Submit', 'Submit'),
		submitButtonBackgroundColor: 'orange',
		submitButtonTextColor: '#fff',
		submitButtonBorderRadius: 20
	},
	overrides: {
		// backgroundColor: 'green'
	} 
};

function handleUsernameThrottle(textField, submitButton) {
	// Do a HTTP request to validate the text-field value
 	// and enable / disable the submit button as below
	submitButton.enabled = true;
	submitButton.opacity = 1.0
}

const growingForm = new GrowingForm({ configuration: config });

growingForm.on('submit', data => {
	Ti.API.info(`Finished form! Data: ${JSON.stringify(data)}`)
});

growingForm.on('step', (textField, index, isValid) => {
  Ti.API.info(`Stepped to ${index}, valid = ${isValid}`);
});

growingForm.render({ view: $.index });

API

All methods and properties are accessed from the GrowingForm instance

Methods

Name	Arguments	Description
lock		Locks the form
unlock		Unlocks the form
openStep	identifier	Moves back to a step, crawled by it's identifier
focus		Focuses the current field (only if the field is a text-field)
blur		Blurs the current field (only if the field is a text-field)
submit		Submits the form programmatically

License

MIT

Author

Hans Knöchel (Lambus GmbH)