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<!DOCTYPE html>
<html lang="en">
<head>
  <title>Taler's "Demo" Shop</title>
  <link rel="stylesheet" type="text/css" href="style.css">
    <script> /* @licstart  The following is the entire license notice for the
        JavaScript code in this page.

        Copyright (C) 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 2.1 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 2.1 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 id="css-zen-garden" onload="signal_me()">
  <div class="supporting" id="welcome" role="main">
    <div class="explanation" id="zen-explanation" role="article">
      <h1>Welcome to the Taler "Demo" Shop</h1>
      <p>This "toy" website provides you with the ability to
        experience using the
        <a href="https://www.taler.net/">GNU Taler</a>
        payment system without using
        valuable currency. Instead, for the demonstrator we
        will be using a "toy" currency, KUDOS. However, please remember that
        Taler is designed to work with ordinary currencies, such
        as Dollars or Euros, not just toy currencies.
        <br>
        This page, <tt>shop.demo.taler.net</tt> models the behavior of a
        typical Web shop supporting Taler.  The other pages of the demo,
        <tt>mint.demo.taler.net</tt> and
        <tt>bank.demo.taler.net</tt>, correspond to a Taler mint
        and bank with tight Taler integration respectively.
        <!-- TODO: maybe offer the wallet at 'taler.net/extension' in the
             future, instead of at 'demo.taler.net/'? -->
      </p>
      <p>Still missing a wallet? <a href="http://demo.taler.net/extension">Install one!</a>
      </p>
    </div>
  </div>
  <div class="supporting" id="instructions" role="main">
    <div class="explanation" id="installation" role="article">
      <h2>Step 1: Installing the Taler wallet (once)</h2>
      <p>First, you need to install the Taler wallet browser extension.
         It is currently only available for Firefox.  If you run
         Firefox, simply click <a href="/extension">here</a>
         to download and install the extension.  You will then have to
         click on "allow" and "install" dialogs shown by Firefox.
         After that, the Taler logo should appear on the right side
         of your navigation bar.
        <!-- TODO: insert screenshot highlighting the icon? -->
      </p>
    </div>
    <div class="explanation" id="installation-done" role="article" style="display:none;">
      <h2>Step 1: Installing the Taler wallet (done!)</h2>
      <p>Congratulations, you have installed the Taler wallet correctly.
         You can now proceed with the next steps.
      </p>
    </div>
    <div class="explanation" id="wire" role="article" style="display:none;">
      <h2>Step 2: Withdraw coins (occasionally)</h2>
      <p>The next step is to withdraw coins, after all you cannot
         pay with an empty wallet.  To be allowed to withdraw
         coins from a mint, you first need to transfer currency to the mint
         using the normal banking system, for example by using a
         wire transfer.  If the bank offers a tight integration with Taler, it
         may also support this directly over the home banking online interface.
         <br>
         For the demonstration, we have created a "bank" that
         allows you to "wire" funds (in KUDOS) to the mint simply by
         filling in the desired amount into a form.  Naturally, when
         using a real bank with real money, you would have to authenticate
         and authorize the transfer.
         <br>
         Note that you would not do this step for each purchase or each shop.
         Payment with Taler is like paying
         with cash: you withdraw currency at the bank (or an ATM) and then
         pay at many merchants without having to authenticate each time.
         <br>
         So, unless you have already done so, please go ahead and withdraw
         KUDOS at the
         <a href="http://bank.demo.taler.net/" target="_blank">Demo bank</a>
	 (opens in a new tab).</p>
      </p>
    </div>
    <div class="explanation" id="payment" role="article" style="display:none;">
      <h2>Step 3: Shop! (as long as you have KUDOS left in the wallet)</h2>
      <p>Now it is time to spend your hard earned KUDOS.
         Note that we cannot really tell if you got any yet,
         as your Taler wallet balance is visible to you, but
         of course is hidden entirely from the shop.</p>
      <p>The form that follows corresponds to the shopping
         cart of a real Web shop; however, we kept it
         very simple for the demonstration.</p>
      <p>So, please choose a project and the amount of KUDOS you
         wish to donate:</p>
      <form name="tform" action="/checkout.php" method="POST">
        <div class="participation" id="fake-shop">
          <br>
          <input type="radio" name="donation_receiver" value="Taler" checked="true">GNU Taler</input>
          <br>
          <input type="radio" name="donation_receiver" value="Tor">Tor</input>
          <br>
          <input type="radio" name="donation_receiver" value="GNUnet">GNUnet</input>
          <br>
          <select id="taler-donation" name="donation_amount">
            <option value="0.1">0.1 KUDOS</option>
            <option value="1.0">1 KUDOS</option>
            <option value="6.0">5 KUDOS (*)</option>
            <option value="10.0">10 KUDOS</option>
          </select>
          <input type="hidden" name="donation_currency" value="KUDOS"/>
          <input type="submit" name="keyName" value="Donate!"/>
          <br>
          <br>
        </div>
      </form>
      <p>(*) To make it a bit more fun, the 5 KUDOS option
         is deliberately implemented with a fault: the merchant will try to
         make you donate 6 KUDOS instead of the 5 KUDOS you got to see.  But do
         not worry, you will be given the opportunity to review the
         final offer from the merchant in a window secured
         by the Taler extension.  That way, you can spot the
         error before committing to an incorrect contract.</p>
      </p>
    </div>
  </div>
  <script type="text/javascript">
    /* This function is called if/when a Wallet is installed.
       It should enable the parts of the page that only make
       sense after the Wallet has been loaded.
    */
    function wallet_installed_cb(){
	b = document.getElementById("installation");
        b.style.display = 'none';
	b = document.getElementById("installation-done");
        b.style.display = '';
	b = document.getElementById("wire");
        b.style.display = '';
	b = document.getElementById("payment");
        b.style.display = '';
    };

    function wallet_uninstalled_cb(){
	b = document.getElementById("installation");
        b.style.display = '';
	b = document.getElementById("installation-done");
        b.style.display = 'none';
	b = document.getElementById("wire");
        b.style.display = 'none';
	b = document.getElementById("payment");
        b.style.display = 'none';
    };

    /* The merchant signals its taler-friendlyness to the client */
    function signal_me()
    {
      var eve = new Event('taler-checkout-probe');
      document.body.dispatchEvent(eve);
      //alert("signaling");
    };

    function test_without_wallet(){
        wallet_installed_cb();
    }

    document.body.addEventListener("taler-unload",
                                   wallet_uninstalled_cb,
                                   false, false);

    /* Set up a listener to be called whenever a Wallet gets installed
       so that the user is led towards the demo's steps progressively */
    document.body.addEventListener("taler-wallet-present",
                                   wallet_installed_cb,
                                   false, false);

    /* Setup callback to be called whenever the wallet is loaded/enabled
      while the browser is already on this page */
    document.body.addEventListener("taler-load",
                                   signal_me,
                                   false);
  </script>
</body>
</html>