/**
 * list面板
 *
 * Created by GUY on 2015/10/30.
 * @class BI.ListPane
 * @extends BI.Pane
 */
BI.ListPane = BI.inherit(BI.Pane, {

    _defaultConfig: function () {
        var conf = BI.ListPane.superclass._defaultConfig.apply(this, arguments);
        return BI.extend(conf, {
            baseCls: (conf.baseCls || "") + " bi-list-pane",
            logic: {
                dynamic: true
            },
            lgap: 0,
            rgap: 0,
            tgap: 0,
            bgap: 0,
            vgap: 0,
            hgap: 0,
            items: [],
            itemsCreator: BI.emptyFn,
            hasNext: BI.emptyFn,
            onLoaded: BI.emptyFn,
            el: {
                type: "bi.button_group"
            }
        });
    },
    _init: function () {
        BI.ListPane.superclass._init.apply(this, arguments);
        var self = this, o = this.options;

        this.button_group = BI.createWidget(o.el, {
            type: "bi.button_group",
            chooseType: BI.ButtonGroup.CHOOSE_TYPE_SINGLE,
            behaviors: {},
            items: o.items,
            itemsCreator: function (op, calback) {
                if (op.times === 1) {
                    self.empty();
                    BI.nextTick(function () {
                        self.loading();
                    });
                }
                o.itemsCreator(op, function () {
                    calback.apply(self, arguments);
                    op.times === 1 && BI.nextTick(function () {
                        self.loaded();
                        // callback可能在loading之前执行, check保证显示正确
                        self.check();
                    });
                });
            },
            hasNext: o.hasNext,
            layouts: [{
                type: "bi.vertical"
            }]
        });

        this.button_group.on(BI.Controller.EVENT_CHANGE, function (type, value, obj) {
            self.fireEvent(BI.Controller.EVENT_CHANGE, arguments);
            if (type === BI.Events.CLICK) {
                self.fireEvent(BI.ListPane.EVENT_CHANGE, value, obj);
            }
        });
        this.check();

        BI.createWidget(BI.extend({
            element: this
        }, BI.LogicFactory.createLogic(BI.LogicFactory.createLogicTypeByDirection(BI.Direction.Top), BI.extend({
            scrolly: true,
            lgap: o.lgap,
            rgap: o.rgap,
            tgap: o.tgap,
            bgap: o.bgap,
            vgap: o.vgap,
            hgap: o.hgap
        }, o.logic, {
            items: BI.LogicFactory.createLogicItemsByDirection(BI.Direction.Top, this.button_group)
        }))));
    },

    hasPrev: function () {
        return this.button_group.hasPrev && this.button_group.hasPrev();
    },

    hasNext: function () {
        return this.button_group.hasNext && this.button_group.hasNext();
    },

    prependItems: function (items) {
        this.options.items = items.concat(this.options.items);
        this.button_group.prependItems.apply(this.button_group, arguments);
        this.check();
    },

    addItems: function (items) {
        this.options.items = this.options.items.concat(items);
        this.button_group.addItems.apply(this.button_group, arguments);
        this.check();
    },

    removeItemAt: function (indexes) {
        indexes = BI.isNull(indexes) ? [] : indexes;
        BI.removeAt(this.options.items, indexes);
        this.button_group.removeItemAt.apply(this.button_group, arguments);
        this.check();
    },

    populate: function (items) {
        var self = this, o = this.options;
        if (arguments.length === 0 && (BI.isFunction(this.button_group.attr("itemsCreator")))) {// 接管loader的populate方法
            this.button_group.attr("itemsCreator").apply(this, [{times: 1}, function () {
                if (arguments.length === 0) {
                    throw new Error("参数不能为空");
                }
                self.populate.apply(self, arguments);
            }]);
            return;
        }
        BI.ListPane.superclass.populate.apply(this, arguments);
        var context = BI.get(arguments, [2], {});
        var tipText = context.tipText || '';
        BI.isNotEmptyString(tipText) && this.setTipText(tipText);
        this.button_group.populate.apply(this.button_group, arguments);
    },

    empty: function () {
        this.button_group.empty();
    },

    setNotSelectedValue: function () {
        this.button_group.setNotSelectedValue.apply(this.button_group, arguments);
    },

    getNotSelectedValue: function () {
        return this.button_group.getNotSelectedValue();
    },

    setValue: function () {
        this.button_group.setValue.apply(this.button_group, arguments);
    },

    getValue: function () {
        return this.button_group.getValue.apply(this.button_group, arguments);
    },

    getAllButtons: function () {
        return this.button_group.getAllButtons();
    },

    getAllLeaves: function () {
        return this.button_group.getAllLeaves();
    },

    getSelectedButtons: function () {
        return this.button_group.getSelectedButtons();
    },

    getNotSelectedButtons: function () {
        return this.button_group.getNotSelectedButtons();
    },

    getIndexByValue: function (value) {
        return this.button_group.getIndexByValue(value);
    },

    getNodeById: function (id) {
        return this.button_group.getNodeById(id);
    },

    getNodeByValue: function (value) {
        return this.button_group.getNodeByValue(value);
    }
});
BI.ListPane.EVENT_CHANGE = "EVENT_CHANGE";
BI.shortcut("bi.list_pane", BI.ListPane);