@charset "utf-8";

// 定义carousel的基础构造
@mixin _carousel {
    position: relative;
    overflow: hidden;
    width: 100%;
    text-align: center;
    > .cont {
        position: relative;
        white-space: nowrap;
        @include clearspace;
        > .item {
            width: 100%;
            background-color: #eee;
        }
        .img {
            max-width: 100%;
            max-height: 100%;
            height: auto;
        }
    }
    > .index {
        position: absolute;
        bottom: .05rem;
        left: 50%;
        @include transform(translate(-50%, 0) translateZ(0));
        > li {
            float: left;
            margin: 0 .05rem;
            @include square(map-get($carousel, index-size));
            border-radius: 50%;
            background-color: map-get($carousel, index-bgcolor);
            &.on {
                background-color: map-get($carousel, on-index-bgcolor);
            }
        }
    }
    > .yo-ico {
        position: absolute;
        top: 50%;
        @include transform(translate(0, -50%));
        @include square(map-get($carousel, btn-size));
        border-radius: 50%;
        background-color: map-get($carousel, btn-bgcolor);
        color: map-get($carousel, btn-color);
        line-height: map-get($carousel, btn-size);
        cursor: pointer;
        &:active,
        &-touch {
            background-color: map-get($carousel, touch-btn-bgcolor);
            color: map-get($carousel, touch-btn-color);
        }
    }
    > .yo-ico-prev {
        left: 0;
    }
    > .yo-ico-next {
        right: 0;
    }
}

/**
 * @module fragment
 * @method yo-carousel
 * @version 3.0.0
 * @description 构造yo-carousel的自定义使用方法
 * @demo http://ued.qunar.com/hy2/yo/demo/src/html/fragment/yo-carousel.html
 * @param {String} $name 定义扩展名称 <3.0.0>
 * @param {Length} $btn-size 按钮大小 <3.0.0>
 * @param {Color} $btn-bgcolor 按钮背景色 <3.0.0>
 * @param {Color} $btn-color 按钮文本色 <3.0.0>
 * @param {Color} $touch-btn-bgcolor 按钮按下背景色 <3.0.0>
 * @param {Color} $touch-btn-color 按钮按下文本色 <3.0.0>
 * @param {Length} $index-size 索引大小 <3.0.0>
 * @param {Color} $index-bgcolor 索引背景色 <3.0.0>
 * @param {Color} $on-index-bgcolor 索引当前项背景色 <3.0.0>
 */

@mixin yo-carousel(
    $name: default,
    $btn-size: default,
    $btn-bgcolor: default,
    $btn-color: default,
    $touch-btn-bgcolor: default,
    $touch-btn-color: default,
    $index-size: default,
    $index-bgcolor: default,
    $on-index-bgcolor: default) {
    // 区别是否新增实例还是修改本身
    $name: if($name == default, "", "-#{$name}");
    // 如果值为default，则取config的定义
    @if $btn-size == default {
        $btn-size: map-get($carousel, btn-size);
    }
    @if $btn-bgcolor == default {
        $btn-bgcolor: map-get($carousel, btn-bgcolor);
    }
    @if $btn-color == default {
        $btn-color: map-get($carousel, btn-color);
    }
    @if $touch-btn-bgcolor == default {
        $touch-btn-bgcolor: map-get($carousel, touch-btn-bgcolor);
    }
    @if $touch-btn-color == default {
        $touch-btn-color: map-get($carousel, touch-btn-color);
    }
    @if $index-size == default {
        $index-size: map-get($carousel, index-size);
    }
    @if $index-bgcolor == default {
        $index-bgcolor: map-get($carousel, index-bgcolor);
    }
    @if $on-index-bgcolor == default {
        $on-index-bgcolor: map-get($carousel, on-index-bgcolor);
    }
    .yo-carousel#{$name} {
        > .index {
            > li {
                @if $index-size != map-get($carousel, index-size) {
                    @include square($index-size);
                }
                @if $index-bgcolor != map-get($carousel, index-bgcolor) {
                    background-color: $index-bgcolor;
                }
                &.on {
                    @if $on-index-bgcolor != map-get($carousel, on-index-bgcolor) {
                        background-color: $on-index-bgcolor;
                    }
                }
            }
        }
        > .yo-ico {
            @if $btn-size != map-get($carousel, btn-size) {
                @include square($btn-size);
                line-height: $btn-size;
            }
            @if $btn-bgcolor != map-get($carousel, btn-bgcolor) {
                background-color: $btn-bgcolor;
            }
            @if $btn-color != map-get($carousel, btn-color) {
                color: $btn-color;
            }
            &:active,
            &.yo-ico-touch {
                @if $touch-btn-bgcolor != map-get($carousel, touch-btn-bgcolor) {
                    background-color: $touch-btn-bgcolor;
                }
                @if $touch-btn-color != map-get($carousel, touch-btn-color) {
                    color: $touch-btn-color;
                }
            }
        }

        // 增量扩展
        @content;
    }
}

// 调用本文件时载入carouselable基础构造
.yo-carousel {
    @include _carousel;
}