source: Dev/trunk/src/client/dojox/analytics/plugins/mouseOver.js

define(["dojo/_base/lang", "../_base", "dojo/_base/config", "dojo/_base/window", "dojo/on"
], function(lang, dxa, config, window, on){

        return (dxa.plugins.mouseOver = new (function(){
                this.watchMouse = config["watchMouseOver"] || true;
                this.mouseSampleDelay = config["sampleDelay"] || 2500;
                this.addData = lang.hitch(dxa, "addData", "mouseOver");
                this.targetProps = config["targetProps"] || ["id","className","localName","href", "spellcheck", "lang", "textContent", "value" ];
                this.textContentMaxChars = config["textContentMaxChars"] || 50;

                this.toggleWatchMouse = function(){
                        if(this._watchingMouse){
                                this._watchingMouse.remove();
                                delete this._watchingMouse;
                                return;
                        }
                        on(window.doc, "mousemove", lang.hitch(this, "sampleMouse"));
                };

                if(this.watchMouse){
                        on(window.doc, "mouseover", lang.hitch(this, "toggleWatchMouse"));
                        on(window.doc, "mouseout", lang.hitch(this, "toggleWatchMouse"));
                }

                this.sampleMouse = function(e){
                        if(!this._rateLimited){
                                this.addData("sample",this.trimMouseEvent(e));
                                this._rateLimited = true;
                                setTimeout(lang.hitch(this, function(){
                                        if(this._rateLimited){
                                                //this.addData("sample", this.trimMouseEvent(this._lastMouseEvent));
                                                this.trimMouseEvent(this._lastMouseEvent);
                                                delete this._lastMouseEvent;
                                                delete this._rateLimited;
                                        }
                                }), this.mouseSampleDelay);
                        }
                        this._lastMouseEvent = e;
                        return e;
                };

                this.trimMouseEvent = function(e){
                        var t = {};
                        for(var i in e){
                                switch(i){
                                        //case "currentTarget":  //currentTarget caused an error
                                        case "target":
                                        //case "originalTarget":
                                        //case "explicitOriginalTarget":
                                                var props = this.targetProps;
                                                t[i] = {};
                                                //console.log(e, i, e[i]);
                                                for(var j = 0;j < props.length;j++){
                                                        if((typeof e[i] == "object" || typeof e[i] == "function") && props[j] in e[i]){
                                                                 
                                                                if(props[j] == "text" || props[j] == "textContent"){
                                                                        if(e[i]["localName"] && (e[i]["localName"] != "HTML") && (e[i]["localName"] != "BODY")){
                                                                                t[i][props[j]] = e[i][props[j]].substr(0,this.textContentMaxChars);
                                                                        }
                                                                }else{
                                                                        t[i][props[j]] = e[i][props[j]];
                                                                }
                                                        }
                                                }
                                                break;
                                        // clientX, pageX and x are usually the same so no need to show all 3, same for y
                                        //case "clientX":
                                        //case "clientY":
                                        //case "pageX":
                                        //case "pageY":
                                        case "screenX":
                                        case "screenY":
                                        case "x":
                                        case "y":
                                                if(e[i]){
                                                        //console.log("Attempting: " + i);
                                                        var val = e[i];
                                                        //console.log("val: " +  val); console.log(i + "e of i: " + val);
                                                        t[i] = val + '';
                                                }
                                                break;
                                        default:
                                                //console.log("Skipping: ", i);
                                                break;
                                }
                        }
                        return t;
                };
        })());
});