NAME

Chrome::DevToolsProtocol - asynchronous dispatcher for the DevTools protocol

SYNOPSIS

    # Usually, WWW::Mechanize::Chrome automatically creates a driver for you
    my $driver = Chrome::DevToolsProtocol->new(
        port => 9222,
        host => '127.0.0.1',
        auto_close => 0,
        error_handler => sub {
            # Reraise the error
            croak $_[1]
        },
    );
    $driver->connect( new_tab => 1 )->get

METHODS

->new( %args )

    my $driver = Chrome::DevToolsProtocol->new(
        port => 9222,
        host => '127.0.0.1',
        auto_close => 0,
        error_handler => sub {
            # Reraise the error
            croak $_[1]
        },
    );

These members can mostly be set through the constructor arguments:

host

The hostname to connect to

host

The port to connect to

json

The JSON decoder used

ua

The Future::HTTP instance to talk to the Chrome DevTools

tab

Which tab to reuse (if any)

log

A premade Log::Log4perl object to act as logger

on_message

A callback invoked for every message

transport

The event-loop specific transport backend

->future

    my $f = $driver->future();

Returns a backend-specific generic future

->endpoint

    my $url = $driver->endpoint();

Returns the URL endpoint to talk to for the connected tab

->add_listener

    my $l = $driver->add_listener(
        'Page.domContentEventFired',
        sub {
            warn "The DOMContent event was fired";
        },
    );

    # ...

    undef $l; # stop listening

Adds a callback for the given event name. The callback will be removed once the return value goes out of scope.

->remove_listener

    $driver->remove_listener($l);

Explicitly remove a listener.

->log

    $driver->log('debug', "Warbling doodads", { doodad => 'this' } );

Log a message

->connect

    my $f = $driver->connect()->get;

Asynchronously connect to the Chrome browser, returning a Future.

->close

    $driver->close();

Shut down the connection to Chrome

->sleep

    $driver->sleep(0.2)->get;

Sleep for the amount of seconds in an event-loop compatible way

->one_shot

    my $f = $driver->one_shot('Page.domContentEventFired')->get;

Returns a future that resolves when the event is received

$chrome->json_get

    my $data = $driver->json_get( 'version' )->get;

Requests an URL and returns decoded JSON from the future

$chrome->send_packet

  $chrome->send_packet('Page.handleJavaScriptDialog',
      accept => JSON::true,
  );

Sends a JSON packet to the remote end

$chrome->send_message

  my $future = $chrome->send_message('DOM.querySelectorAll',
      selector => 'p',
      nodeId => $node,
  );
  my $nodes = $future->get;

This function expects a response. The future will not be resolved until Chrome has sent a response to this query.

$chrome->callFunctionOn

$chrome->evaluate

$chrome->eval

$chrome->version_info

    print $chrome->version_info->get->{"Protocol-Version"};

$chrome->protocol_version

    print $chrome->protocol_version->get;

$chrome->get_domains

$chrome->list_tabs

  my @tabs = $chrome->list_tabs->get();

$chrome->new_tab

    my $new_tab = $chrome->new_tab('https://www.google.com')->get;

$chrome->activate_tab

    $chrome->activate_tab( $tab )->get

Brings the tab to the foreground of the application

$chrome->close_tab

    $chrome->close_tab( $tab )->get

Closes the tab

SEE ALSO

The inofficial Chrome debugger API documentation at https://github.com/buggerjs/bugger-daemon/blob/master/README.md#api

Chrome DevTools at https://chromedevtools.github.io/devtools-protocol/1-2

REPOSITORY

The public repository of this module is https://github.com/Corion/www-mechanize-chrome.

SUPPORT

The public support forum of this module is https://perlmonks.org/.

BUG TRACKER

Please report bugs in this module via the RT CPAN bug queue at https://rt.cpan.org/Public/Dist/Display.html?Name=WWW-Mechanize-Chrome or via mail to www-mechanize-Chrome-Bugs@rt.cpan.org.

AUTHOR

Max Maischein corion@cpan.org

COPYRIGHT (c)

Copyright 2010-2018 by Max Maischein corion@cpan.org.

LICENSE

This module is released under the same terms as Perl itself.