cc.Class({
    extends: cc.Component,

    properties: {
        scrollContent: {
            default: null,
            type: cc.Node
        },
        scrollView: {
            default: null,
            type: cc.ScrollView
        },
        mainScrollPrefab: {
            default: null,
            type: cc.Prefab
        },
        topMenuBtn: {
            default: null,
            type: cc.Button
        },
        mainScrollContent: {
            default: null,
            type: cc.Node
        },
        topMenuPrefab: {
            default: null,
            type: cc.Prefab
        },
        menuContentPrefab: {
            default: null,
            type: cc.Prefab
        },
        topMenu: {
            default: null,
            type: cc.Node
        }
    },

    // LIFE-CYCLE CALLBACKS:

    onLoad () {
        this.mainScrollContent = cc.instantiate(this.mainScrollPrefab);
        this.scrollContent.addChild(this.mainScrollContent);
        let self = this;
        let topHeader = cc.instantiate(this.topMenuPrefab);
        this.node.addChild(topHeader, 10);
        topHeader.getComponent('topMenu').menuBtn.on('click', function () {
            self.showTopMenu();
        });
        this.scrollView.node.on('scroll-ended', function (e) {
        });
    },

    start () {
    },
    onDestroy: function () {
        onfire.un(this.topMenuListener);
    },
    // update (dt) {},
    showTopMenu() {
        if (!this.topMenu) {
            this.topMenu = cc.instantiate(this.menuContentPrefab);
            this.node.addChild(this.topMenu, 9);
            this.topMenuListener = onfire.on("topMenuClick", this.onTopMenuClick.bind(this));
        } else {
            this.topMenu.active = !this.topMenu.active ;
        }
    },

    onTopMenuClick: function (idx) {
        console.log(idx);
        let y = 0;
        switch (idx) {
            case 1:
                y = 1560;
                break;
            case 2:
                y = 2920;
                break;
            case 3:
                y = 3666;
                break;
            case 4:
                y = 4686;
                break;
            default:
                y = 0;
                break;
        }
        this.scrollView.scrollToOffset(cc.v2(0, y), 0.1);
        this.topMenu.active = false;
    }
});