数据集定义BusinessView对象扩展

var ConfigurationPatch = {
    extensionPoints: {
        BusinessView: {
            handlers: [{
                className: "ext.gzgs.handler.BusinessViewHandler"
            }]
        }
    }
};

var util = jsloader.resolve("freequery.common.util");
var BusinessViewHandler = function(businessView) {
    this.businessView = businessView;
    this.queryType = this.businessView.bv.queryType;
};
lang.extend(BusinessViewHandler, "freequery.widget.Module2");
 
BusinessViewHandler.prototype.destroy = function() {
    BusinessViewHandler.superclass.destroy.call(this);
};
BusinessViewHandler.prototype.isEnabled = function(){
	return true;
} 
BusinessViewHandler.prototype.readConfig = function() {
    var config = {
        toolbar : {
            items : [ {
                id : "saveEx",
                image : "img/save.gif",
                title : "保存",
                command : "SAVE_BUSINESS",//用于下面execute方法
                before : "save"
            }]
        }
    };
    return config;
};
BusinessViewHandler.prototype.execute = function(cmd, btn) {
    switch (cmd) {
        case "SAVE_BUSINESS":
            try {
                this.businessView.onSave();
            }catch (e){
                break;
            }
            break;
    }
};