var serviceObj = null;
 
window.onload = init;
 
// Initializes the widget
function init() {
    // Obtain the AppManager service object
    try {
        serviceObj = device.getServiceObject("Service.AppManager",
            "IAppManager");
    } catch (ex) {
        alert("Service object cannot be found.");
        return;
    }
 
    // We are interested in applications, so let's define the criteria
    // respectively
    var criteria = new Object();
    criteria.Type = "Application";
 
    // Obtain the list of installed applications
    var result = serviceObj.IAppManager.GetList(criteria);
    var appList = createAppList(result.ReturnValue);
    appList.sort();
    displayList(appList);
}
 
// Creates the list of installed applications
function createAppList(iterator) {
    var list = new Array();
    try {
        iterator.reset();
        var item;
        while ((item = iterator.getNext()) != undefined) {
            var txt = "";
            txt += item.Caption + " (";
            txt += item.Uid + ")";
            list.push(txt);
        }
    } catch (ex) {
        alert(ex);
    }
    return list;
}
 
// Displays a list on the screen
function displayList(list) {
    var listElement = document.createElement("ol");
    for (var i = 0; i < list.length; i++) {
        var listItemElement = document.createElement("li");
        var textElement = document.createTextNode(list[i]);
        listItemElement.appendChild(textElement);
        listElement.appendChild(listItemElement);
    }
    var bodyContentElement = document.getElementById("bodyContent");
    bodyContentElement.appendChild(listElement);
}