cc.Class( {

    extends: cc.Component,

    properties: {

        maxCount: {
            default: 10,
            displayName: "上限"
        },

        fabItem: {
            default: null,
            type: cc.Prefab,
            displayName: "道具预制"
        },

        tag_key:{
            default:"",
            displayName:"标签"
        }
    },

    // 编辑器特性
    editor: {

        // 允许当前组件在编辑器模式下运行
        executeInEditMode: false,

        // 当本组件添加到节点上后，禁止同类型（含子类）的组件再添加到同一个节点，防止逻辑发生冲突
        disallowMultiple: false,

        // requireComponent 参数用来指定当前组件的依赖组件
        requireComponent: cc.Layout,
    },

    // 重建列表
    // [[id,count]]
    rebuild: function( _items , selfCallBack = null) {

        // 清空
        if( nx.dt.arrEmpty( _items ) ) {
            nx.pools.putChildren( this.node );
            return;
        }

        // 重建
        nx.gui.hideAllChildren( this.node, "" );
        let pool = nx.pools.getPool( this.fabItem.name, this.fabItem );
        let max = Math.min( _items.length, this.maxCount );
        for( let i = 0; i < max; ++i ) {

            let node = this.node.children[ i ];
            if( !node ) {
                node = pool.get();
                node.parent = this.node;
                let cmp = nx.gui.getComponent(this,"",cc.Layout);
                if(cmp.type == cc.Layout.Type.HORIZONTAL){
                    node.y = 0;
                }else if(cmp.type == cc.Layout.Type.VERTICAL){
                    node.x = 0;
                }
            }

            node.active = true;
            let item = _items[ i ];
            let cmp = node.getComponent( "nx.fx.sv.expand.item" );
            cmp.sort_index = i;
            // 基础规则参数
            if( nx.dt.arrNEmpty( item ) ) {
                cmp.setData( item[ 0 ], item[ 1 ] ,this.tag_key);
            }
            else {
                // 否则视为data2Icon统一数据格式
                cmp.setData( item ,null,this.tag_key);
            }

            //设置单例点击回调
            if(cmp.setSelectCall && selfCallBack){
                cmp.setSelectCall(selfCallBack);

            }
        }

    },

} );