MapCollection

class webix.MapCollection()

Mapcollection mixin

References

components
DataCollection().
helpers
assert_error(), bind(), isArray(), uid().

Referenced by

components
DataCollection().
views
datatable(), property().

External references

Official documentation page.

Code

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webix.MapCollection = {
    $init:function(){
        this.$ready.push(this._create_scheme_init);
        this.attachEvent("onStructureUpdate", this._create_scheme_init);
        this.attachEvent("onStructureLoad", function(){
            if(!this._scheme_init_order.length)
                this._create_scheme_init();
        });
    },
    _create_scheme_init:function(order){
        var order = this._scheme_init_order = [];
        var config = this._settings;

        if (config.columns)
            this._build_data_map(config.columns);
        if (this._settings.map)
            this._process_field_map(config.map);

        if (this._scheme_init_order.length){
             try {
            this.data._scheme_init = Function("obj",order.join("\n"));
            } catch(e){
                webix.assert_error("Invalid data map:"+order.join("\n"));
            }
        }
    },
    _process_field_map:function(map){
        for (var key in map)
            this._scheme_init_order.push(this._process_single_map(key, map[key]));
    },
    _process_single_map:function(id, map, extra){
        var start = "";
        var end = "";

        if (map.indexOf("(date)")===0){
            start = "webix.i18n.parseFormatDate("; end=")";
            if (extra && !extra.format) extra.format = webix.i18n.dateFormatStr;
            map = map.replace("(date)","");
        } else if (map.indexOf("(number)")===0){
            start = "("; end=")*1";
            map = map.replace("(number)","");
        }

        if (map !== ""){
            map=map.replace(/\{obj\.([^}]*)\}/g,"\"+(obj.$1||'')+\"");
            map=map.replace(/#([^#'";, ]+)#/gi,"\"+(obj.$1||'')+\"");
        } else
            map = "\"+(obj."+id+"||'')+\"";


        return "obj."+id+" = "+start+'"'+map+'"'+end+";";
    },
    _build_data_map:function(columns){ //for datatable
        for (var i=0; i<columns.length; i++){
            var map = columns[i].map;
            var id = columns[i].id;
            if (!id) {
                id = columns[i].id = "i"+webix.uid();
                if (!columns[i].header)
                    columns[i].header = "";
            }
            if (map)
                this._scheme_init_order.push(this._process_single_map(id, map, columns[i]));

            this._map_options(columns[i]);
        }
    },
    _map_options:function(element){
        var options = element.options||element.collection;
        if(options){
            if (typeof options === "string"){
                //id of some other view
                var options_view = webix.$$(options);
                //or url
                if (!options_view){
                    options_view = new webix.DataCollection({ url: options });
                    this._destroy_with_me.push(options_view);
                }
                //if it was a view, special check for suggests
                if (options_view.getBody) options_view = options_view.getBody();
                this._bind_collection(options_view, element);
            } else if (!options.loadNext){
                if (options[0] && typeof options[0] == "object"){
                    //[{ id:1, value:"one"}, ...]
                    options = new webix.DataCollection({ data:options });
                    this._bind_collection(options, element);
                    this._destroy_with_me.push(options);
                } else {
                    //["one", "two"]
                    //or
                    //{ 1: "one", 2: "two"}
                    if (webix.isArray(options)){
                        var data = {};
                        for (var ij=0; ij<options.length; ij++) data[options[ij]] = options[ij];
                        element.options = options = data;
                    }
                    element.template = element.template || this._collection_accesser(options, element.id, element.optionslist);
                }
            } else {
                //data collection or view
                this._bind_collection(options, element);
            }
        }
    },
    _bind_collection:function(options, element){
        if (element){
            delete element.options;
            element.collection = options;
            element.template = element.template || this._bind_accesser(options, element.id, element.optionslist);
            var id = options.data.attachEvent("onStoreUpdated", webix.bind(function(){
                this.refresh();
                if(this.refreshFilter)
                    this.refreshFilter(element.id);
            }, this));
            this.attachEvent("onDestruct", function(){
                if (!options.$destructed) options.data.detachEvent(id);
            });
        }
    },
    _collection_accesser:function(options, id, multi){
        if (multi){
            var separator = typeof multi=="string"?multi:",";
            return function(obj, common){
                var value = obj[id] || obj.value;
                if (!value) return "";
                var ids = value.split(separator);
                for (var i = 0; i < ids.length; i++)
                    ids[i] = options[ids[i]] || "";

                return ids.join(", ");
            };
        } else {
            return function(obj, common){
                return options[obj[id]]||obj.value||"";
            };
        }
    },
    _bind_accesser:function(col, id, multi){
        if (multi) {
            var separator = typeof multi=="string"?multi:",";
            return function(obj, common){
                var value = obj[id] || obj.value;
                if (!value) return "";

                var ids = value.split(separator);
                for (var i = 0; i < ids.length; i++){
                    var data = col.data.pull[ids[i]];
                    ids[i] = data ? (data.value  || "") : "";
                }

                return ids.join(", ");
            };
        } else {
            return function(obj, common){
                var prop = obj[id]||obj.value,
                    data = col.data.pull[prop];
                if (data && (data.value || data.value ===0))
                    return data.value;
                return "";
            };
        }
    }
};