import { EventData, TextBase } from '@nativescript/core';

const possibleValues = ['none', 'underline', 'line-through', 'underline line-through'];

export function butonTap(args: EventData) {

let page = (<TextBase>args.object).page;

let lbl = <TextBase>page.getViewById('Label');

let btn = <TextBase>page.getViewById('Button');

let textField = <TextBase>page.getViewById('TextField');

let textView = <TextBase>page.getViewById('TextView');

let currentIndex = possibleValues.indexOf(lbl.textDecoration);

let newIndex = (currentIndex + 1) % possibleValues.length;

let newValue = <any>possibleValues[newIndex];

lbl.textDecoration = newValue;

btn.textDecoration = newValue;

textField.textDecoration = newValue;

textView.textDecoration = newValue;

if (lbl.text === 'Change text') {

lbl.text = btn.text = textField.text = textView.text = 'Text changed';

} else {

lbl.text = btn.text = textField.text = textView.text = 'Change text';

}

}