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<!DOCTYPE html>
<html>
<head>
<title>Choose payment method</title>
<script>
/*
@licstart The following is the entire license notice for the
JavaScript code in this page.
Copyright (C) 2014,2015 GNUnet e.V.
The JavaScript code in this page is free software: you can
redistribute it and/or modify it under the terms of the GNU
Lesser General Public License (GNU LGPL) as published by the Free Software
Foundation, either version 3 of the License, or (at your option)
any later version. The code is distributed WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU LGPL for more details.
As additional permission under GNU LGPL version 3 section 7, you
may distribute non-source (e.g., minimized or compacted) forms of
that code without the copy of the GNU LGPL normally required by
section 4, provided you include this license notice and a URL
through which recipients can access the Corresponding Source.
@licend The above is the entire license notice
for the JavaScript code in this page.
*/
</script>
</head>
<body onload="signal_me()">
<!--
This page's main aim is to show to the customer all the accepted
payments methods and actually implementing just Taler; technically
the steps are:
1. retrieve the information about the donation from the
form and remember it in a PHP session
2. show a menu with all the required payments system options,
only showing "Taler" if the wallet is present
3. (JavaScript) implement the "checkout" button for Taler,
for the demo we ignore the other payment options.
-->
<?php
// get the donation information from form
$donation_receiver = $_POST['donation_receiver'];
$donation_amount = $_POST['donation_amount'];
$donation_currency = $_POST['donation_currency'];
// create PHP session and store donation information in session
session_start();
$_SESSION['receiver'] = $donation_receiver;
$_SESSION['amount'] = $donation_amount;
$_SESSION['currency'] = $donation_currency;
?>
<form name="tform" action="" method="POST">
<div id="opt-form" align="left"><br>
<input type="radio" name="payment_system" value="lisa" checked>Lisa</input>
<br>
<input type="radio" name="payment_system" value="ycard">You Card</input>
<br>
<input type="radio" name="payment_system" value="cardme">Card Me</input>
<br>
<input type="radio" name="payment_system" value="taler"
id="taler-radio-button-id" disabled="true">Taler</input>
<br>
<input type="button" onclick="pay(this.form)" value="Ok">
</div>
</form>
<script type="text/javascript">
/* We got a JSON contract from the merchant,
pass it to the extension */
function handle_contract(json_contract)
{
var cEvent = new CustomEvent('taler-contract',
{ detail: json_contract,
target: "/taler/pay"});
document.body.dispatchEvent(cEvent);
};
/* Trigger Taler contract generation on the server, and pass the
contract to the extension once we got it. */
function taler_pay(form)
{
var contract_request = new XMLHttpRequest();
contract_request.open("POST", "/generate_taler_contract.php", true);
contract_request.onload = function (e)
{
if (contract_request.readyState == 4)
{
if (contract_request.status == 200)
{
/* display contract_requestificate (i.e. it sends the JSON string
to the extension) alert (contract_request.responseText); */
handle_contract(contract_request.responseText);
}
else
{
alert("No contract got from merchant.\n" + contract_request.responseText);
}
}
};
contract_request.onerror = function (e)
{
alert(contract_request.statusText);
};
contract_request.send(null);
}
/* This function is called when the user presses the
'Ok' button. We are now supposed to trigger the
"corret" payment system logic. For this demo, we
only handle "taler". */
function pay(form)
{
for (var cnt=0; cnt < form.payment_system.length; cnt++)
{
var choice = form.payment_system[cnt];
if (choice.checked)
{
if (choice.value == "taler")
{
taler_pay(form);
}
else
{
alert(choice.value + ": NOT available in this demo!");
}
}
}
};
/* The following event gets fired whenever a customer has a Taler
wallet installed in his browser. In that case, the webmaster can decide
whether or not displaying Taler as a payment option */
function has_taler_wallet_cb(aEvent)
{
// enable the Taler payment option from the form
var tbutton = document.getElementById("taler-radio-button-id");
tbutton.removeAttribute("disabled");
if (aEvent.type == "taler-wallet-wfirst"){
var eve = new Event('taler-payment-wfirst');
document.body.dispatchEvent(eve);
}
};
/* Function called when the Taler extension was unloaded,
here we disable the option */
function taler_wallet_unload_cb(aEvent)
{
var tbutton = document.getElementById("taler-radio-button-id");
tbutton.setAttribute("disabled", "true");
};
/* The merchant signals its taler-friendlyness to the client */
function signal_me()
{
var eve = new Event('taler-payment-mfirst');
document.body.dispatchEvent(eve);
};
function test_without_wallet(){
var tbutton = document.getElementById("taler-radio-button-id");
tbutton.removeAttribute("disabled");
};
test_without_wallet();
// Register event to be triggered by the wallet as a response to our
// first event
document.body.addEventListener("taler-wallet-mfirst", has_taler_wallet_cb, false);
// The following callback is used to allow the button to change its
// color whenever the user navigates away from this page
document.body.addEventListener("taler-shutdown",
function(){
var unloadEvent = new Event('taler-unload');
document.body.dispatchEvent(unloadEvent);
},
false);
// event awaited by the wallet to change its button's color
// alert("sending");
// var eve = new Event('taler-payment-mfirst');
// document.body.dispatchEvent(eve);
// Register event to be triggered by the wallet when it gets enabled while
// the user is on the payment page
document.body.addEventListener("taler-wallet-wfirst", has_taler_wallet_cb, false);
// Register event to be triggered by the wallet when it is unloaded
document.body.addEventListener("taler-unload", taler_wallet_unload_cb, false);
</script>
</body>
</html>
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