// Lightstreamer Portfolio Demo
// Order Entry Management

//////////////// Drop-down List Composition

// The list of stocks available on the market would be normally provided
// by an application server, based on some search criteria and on the user
// profile. In this sample, we will simply hard-wire on the Client the list
// of stocks managed by the QUOTE_ADAPTER Data Adapter.

var availStocks = ["item1","item2","item3","item4","item5",
                   "item6","item7","item8","item9","item10",
                   "item11","item12","item13","item14","item15",
                   "item16", "item17", "item18", "item19", "item20",
                   "item21", "item22", "item23", "item24", "item25",
                   "item26", "item27", "item28", "item29", "item30"];

var stockNames = ["Anduct", "Ations Europe",
                  "Bagies Consulting", "BAY Corporation",
                  "CON Consulting", "Corcor PLC",
                  "CVS Asia", "Datio PLC",
                  "Dentems", "ELE Manufacturing",
                  "Exacktum Systems", "KLA Systems Inc",
                  "Lted Europe", "Magasconall Capital",
                  "MED", "Mice Investments",
                  "Micropline PLC", "Nologicroup Devices",
                  "Phing Technology", "Pres Partners",
                  "Quips Devices", "Ress Devices",
                  "Sacle Research", "Seaging Devices",
                  "Sems Systems, Inc", "Softwora Consulting",
                  "Systeria Develop", "Thewlec Asia",
                  "Virtutis", "Yahl"];

// populate the HTML select element
var select = document.getElementById("stockN");
if (select) {
  for (var i = 0; i < availStocks.length; i++) {
    var option = document.createElement("option");
    if (i == 0) {
      option.selected = true;
    }
    option.value = availStocks[i];
    option.innerHTML = stockNames[i];
    select.appendChild(option);
  }
}

//////////////// Order Submission Management

// In order to simplify the deployment of this sample, the "sendMessage"
// facility is used for order submission. In this way, orders are handled
// by Lightstreamer Server directly, without the need for an additional
// Web/application server.

// Please, consider that it is not recommended to use "sendMessage" as a
// message delivery channel from the Client to the Server in mission critical
// scenarios. In particular, no acknowledgement of the reception and
// acceptance of the message by the Server is received by the Web Client.
// The recommended architecture is based on traditional patterns: the Client
// sends messages to a Web/application server, which publishes them on a 
// message bus (e.g. JMS); a Lightstreamer Data Adapter subscribes to these
// messages through the bus. In this way, clustering is fully supported.

function submitForm(op) {
  var name = document.getElementById("stockN");
  var qtyN = document.getElementById("qtyN");

  if (!window.engineRef || !window.portfolioId || !op || !name || !qtyN) {
    //this shouldn't happen
    return;
  }

  name = name.value;
  qtyN = qtyN.value;

  if (!qtyN || !name) {
    alert("No empty fields admitted. Please fill the 'quantity' field and choose a stock.");
  } else {
    var wrong = false;

    if (isNaN(qtyN)) {
      alert("Only digits are admitted for the 'quantity' field. Please re-type the value.");
      return;
    }

    var mex = op + "|" + portfolioId + "|" + name + "|" + qtyN;
    engineRef.sendMessage(mex);
  }
}

function enableForm() {
  document.getElementById("buy").disabled = false;
  document.getElementById("sell").disabled = false;
}

function disableForm() {
  document.getElementById("buy").disabled = true;
  document.getElementById("sell").disabled = true;
}