read a websites html code, then select an element and then make an action on that element - flutter

Question

I want to know how Read a websites html code. Then i want to take a specific Element from the html code and make a request to make an action to the Element(e.g. Button,Textfield)
For example i take a websites URL, read the html code,take the element a button and then press the button from my Flutter App.

Answer 1

Web Crawlers/Scrapers only works on mobile clients (or website with CORS enable).
You need to add the following libraries http and html inside your pubspec.yaml:
html: ^0.14.0+3
http: ^0.12.0+4
// latest versions by Feb 18th 2020
to use it, create an async method to fetch the URL you want to "read":
Future<Response> _initiate(String url) async {
Response response = await get(url);
return response;
}
and then, use it this way, reading the specific div, a, img, etc you need:
_initiate(url).then((response) {
var document = parse(response.body);
var items = document.querySelector('div.groupHomeHeader-banner');
var split = items.attributes.values.toList()[1].split('(')[1];
var image = split.substring(0, split.indexOf(')'));
var name = document.querySelector('a.groupHomeHeader-groupNameLink');
});
Every Element has different attributes. For example, an InputElement has the attribute 'click()' and creates the desire effect.
Example of this will be:
var openDoc = document.querySelector('div.pdfInput') as InputElement;
openDoc.click();