activity.js

define([
    "dojo/_base/lang",
    "dojo/_base/window",
    "dojo/has",
    "dojo/topic",
    "dojox/mobile/ProgressIndicator"
], function(lang, win, has, topic, ProgressIndicator) {

    var a = {

        defaultMessage : "Loading",

        useNative   : true,

        iosOptions  : {
            "bounceAnimation" : false,
            "textColor"       : "#FFFFFF",
            "fullScreen"      : false,
            "duration"        : 0,
            "minDuration"     : 2
        },

        containerId : "",

        topics : {
            start   : "activity/start",
            stop    : "activity/stop"
        },

        _busy : false,

        //------------------------------------------------------------------------
        init : function( /*Map*/config ) {
            // summary:
            //      Initializer.
            // config: Map
            //      Map of config settings
            //      {
            //          defaultMessage : "Loading...",
            //          useNative      : true,
            //          iosOptions     : {
            //              "bounceAnimation" : false,
            //              "textColor"       : "#FFFFFF",
            //              "fullScreen"      : false,
            //              "duration"        : 0,
            //              "minDuration"     : 2
            //          },
            //          containerId   : "someNodeId"
            //      }
            // tags:
            //      public
            lang.mixin(a, config);
            if( !has("worklight-hybrid") ) {
                a.useNative = false;
            }
        },

        //--------------------------------------------------------------------
        start : function( args ) {
            var opts = has("worklight-ios") ? lang.clone( a.iosOptions ) : {};
            opts.text = lang.isString(args) ? args : (args.text || args.message || a.defaultMessage);

            if( a._busy ) {
                a.stop();
            }
            if( a.useNative ) {
                //-- WL is WAAAY picky about what arguments it gets
                ["bounceAnimation", "textColor", "fullScreen", "duration", "minDuration"].forEach( function(o){
                    if( typeof args[o] !== "undefined"){
                        opts[o] = args[o];
                    }
                });
                var target = args.target || a.containerId;
                a._busy = new WL.BusyIndicator( target, opts);
                a._busy.show();
            }else{
                a._busy = ProgressIndicator.getInstance();
                win.body().appendChild( a._busy.domNode );
                a._busy.start();
            }
        },

        //--------------------------------------------------------------------
        stop : function(){
            // Stop
            if(a._busy ){
                if( a.useNative ){
                    a._busy.hide();
                }else{
                    a._busy.stop();
                }
                a._busy = null;
            }
        },

        /////////////////// PRIVATE METHODS //////////////////

        //------------------------------------------------------------------------
        _init : function(){
            // summary:
            //      Initializer.
            // tags:
            //  private
            topic.subscribe( a.topics.start, a.start );
            topic.subscribe( a.topics.stop , a.stop );
            a.init({});
        }
    };
    a._init();
    return a;
});