<view class="page">
    <view class="page__hd">
        <view class="page__title">WeUI</view>
        <view class="page__desc">WeUI 是一套同微信原生视觉体验一致的基础样式库，由微信官方设计团队为微信内网页和微信小程序量身设计，令用户的使用感知更加统一。</view>
    </view>
    <view class="page__bd page__bd_spacing">
        <view class="kind-list">
            <block wx:for-items="{{list}}" wx:key="{{item.id}}">
                <view class="kind-list__item">
                    <view id="{{item.id}}" class="weui-flex kind-list__item-hd {{item.open ? 'kind-list__item-hd_show' : ''}}" bindtap="kindToggle">
                        <view class="weui-flex__item">{{item.name}}</view>
                        <image class="kind-list__img" src="images/icon_nav_{{item.id}}.png"></image>
                    </view>
                    <view class="kind-list__item-bd {{item.open ? 'kind-list__item-bd_show' : ''}}">
                        <view class="weui-cells {{item.open ? 'weui-cells_show' : ''}}">
                            <block wx:for-items="{{item.pages}}" wx:for-item="page" wx:key="*item">
                                <navigator url="{{page}}/{{page}}" class="weui-cell weui-cell_access">
                                    <view class="weui-cell__bd">{{page}}</view>
                                    <view class="weui-cell__ft weui-cell__ft_in-access"></view>
                                </navigator>
                            </block>
                        </view>
                    </view>
                </view>
            </block>
        </view>
    </view>
    <view class="page__ft">
        <image src="images/icon_footer.png" style="width: 84px; height: 19px;"></image>
    </view>
</view>

.weui-flex {
  -webkit-box-align: center;
  -webkit-align-items: center;
          align-items: center;
}
.weui-cells {
  margin-top: 0;
  opacity: 0;
  -webkit-transform: translateY(-50%);
          transform: translateY(-50%);
  -webkit-transition: .3s;
  transition: .3s;
}
.weui-cells:before,
.weui-cells:after {
  display: none;
}
.weui-cells_show {
  opacity: 1;
  -webkit-transform: translateY(0);
          transform: translateY(0);
}
.weui-cell:before {
  right: 15px;
}
.kind-list__item {
  margin: 10px 0;
  background-color: #FFFFFF;
  border-radius: 2px;
  overflow: hidden;
}
.kind-list__item:first-child {
  margin-top: 0;
}
.kind-list__img {
  width: 30px;
  height: 30px;
}
.kind-list__item-hd {
  padding: 20px;
  -webkit-transition: opacity .3s;
  transition: opacity .3s;
}
.kind-list__item-hd_show {
  opacity: .4;
}
.kind-list__item-bd {
  height: 0;
  overflow: hidden;
}
.kind-list__item-bd_show {
  height: auto;
}

Page({
    data: {
        list: [
            {
                id: 'form',
                name: '表单',
                open: false,
                pages: ['button', 'list', 'input', 'slider', 'uploader']
            },
            {
                id: 'widget',
                name: '基础组件',
                open: false,
                pages: ['article', 'badge', 'flex', 'footer', 'gallery', 'grid', 'icons', 'loadmore', 'panel', 'preview', 'progress']
            },
            {
                id: 'feedback',
                name: '操作反馈',
                open: false,
                pages: ['actionsheet', 'dialog', 'msg', 'picker', 'toast']
            },
            {
                id: 'nav',
                name: '导航相关',
                open: false,
                pages: ['navbar', 'tabbar']
            },
            {
                id: 'search',
                name: '搜索相关',
                open: false,
                pages: ['searchbar']
            }
        ]
    },
    kindToggle: function (e) {
        var id = e.currentTarget.id, list = this.data.list;
        for (var i = 0, len = list.length; i < len; ++i) {
            if (list[i].id == id) {
                list[i].open = !list[i].open
            } else {
                list[i].open = false
            }
        }
        this.setData({
            list: list
        });
    }
});