<template>
    <view>
        <sjs src="../wxs/utils.sjs" module="utils" />

        <van-overlay :wx:if="overlay" :show="show" :z-index="zIndex" :custom-style="overlayStyle" :duration="duration" @click="onClickOverlay" />
        <view
            :wx:if="inited"
            :class="'custom-class ' + classes + ' ' + utils.bem('popup', [position, { round, safe: safeAreaInsetBottom, safeTop: safeAreaInsetTop }])"
            :style="
                'z-index: ' +
                zIndex +
                '; -webkit-transition-duration:' +
                currentDuration +
                'ms; transition-duration:' +
                currentDuration +
                'ms; ' +
                (display ? '' : 'display: none;') +
                ';' +
                customStyle
            "
            @transitionend="onTransitionEnd"
        >
            <slot />
            <van-icon :wx:if="closeable" :name="closeIcon" :class="'van-popup__close-icon van-popup__close-icon--' + closeIconPosition" @tap.native="onClickCloseIcon" />
        </view>
    </view>
</template>

<script>
import { VantComponent } from '../common/component';
import { transition } from '../mixins/transition';
export default {
    data() {
        return {
            show: '',
            duration: '',
            inited: '',
            classes: '',
            display: false,
            currentDuration: ''
        };
    },
    classes: ['enter-class', 'enter-active-class', 'enter-to-class', 'leave-class', 'leave-active-class', 'leave-to-class'],
    mixins: [transition(false)],
    props: {
        round: Boolean,
        closeable: Boolean,
        customStyle: String,
        overlayStyle: String,
        transition: {
            type: String
        },
        zIndex: {
            type: Number,
            default: 100
        },
        overlay: {
            type: Boolean,
            default: true
        },
        closeIcon: {
            type: String,
            default: 'cross'
        },
        closeIconPosition: {
            type: String,
            default: 'top-right'
        },
        closeOnClickOverlay: {
            type: Boolean,
            default: true
        },
        position: {
            type: String,
            default: 'center'
        },
        safeAreaInsetBottom: {
            type: Boolean,
            default: true
        },
        safeAreaInsetTop: {
            type: Boolean,
            default: false
        }
    },
    created() {
        this.observeClass();
    },
    methods: {
        onClickCloseIcon() {
            this.$emit('close');
        },

        onClickOverlay() {
            this.$emit('click-overlay');
            if (this.closeOnClickOverlay) {
                this.$emit('close');
            }
        },

        observeClass() {
            const { transition, position } = this;
            const updateData = {
                name: transition || position
            };
            if (transition === 'none') {
                updateData.duration = 0;
            }
            this.setData(updateData);
        },

        onTransitionEnd() {
            console.log('占位：函数 onTransitionEnd 未声明');
        }
    },
    watch: {
        transition: {
            handler: function () {
                const { transition, position } = this;
                const updateData = {
                    name: transition || position
                };
                if (transition === 'none') {
                    updateData.duration = 0;
                }
                this.setData(updateData);
            },

            immediate: true
        },

        position: {
            handler: function () {
                const { transition, position } = this;
                const updateData = {
                    name: transition || position
                };
                if (transition === 'none') {
                    updateData.duration = 0;
                }
                this.setData(updateData);
            },

            immediate: true
        }
    }
};
</script>
<style>
@import '../common/index.ttss';
.van-popup {
    position: fixed;
    box-sizing: border-box;
    max-height: 100%;
    overflow-y: auto;
    transition-timing-function: ease;
    -webkit-animation: ease both;
    animation: ease both;
    -webkit-overflow-scrolling: touch;
    background-color: #fff;
    background-color: var(--popup-background-color, #fff);
}
.van-popup--center {
    top: 50%;
    left: 50%;
    -webkit-transform: translate3d(-50%, -50%, 0);
    transform: translate3d(-50%, -50%, 0);
}
.van-popup--center.van-popup--round {
    border-radius: 20px;
    border-radius: var(--popup-round-border-radius, 20px);
}
.van-popup--top {
    top: 0;
    left: 0;
    width: 100%;
}
.van-popup--top.van-popup--round {
    border-radius: 0 0 20px 20px;
    border-radius: 0 0 var(--popup-round-border-radius, 20px) var(--popup-round-border-radius, 20px);
}
.van-popup--right {
    top: 50%;
    right: 0;
    -webkit-transform: translate3d(0, -50%, 0);
    transform: translate3d(0, -50%, 0);
}
.van-popup--right.van-popup--round {
    border-radius: 20px 0 0 20px;
    border-radius: var(--popup-round-border-radius, 20px) 0 0 var(--popup-round-border-radius, 20px);
}
.van-popup--bottom {
    bottom: 0;
    left: 0;
    width: 100%;
}
.van-popup--bottom.van-popup--round {
    border-radius: 20px 20px 0 0;
    border-radius: var(--popup-round-border-radius, 20px) var(--popup-round-border-radius, 20px) 0 0;
}
.van-popup--left {
    top: 50%;
    left: 0;
    -webkit-transform: translate3d(0, -50%, 0);
    transform: translate3d(0, -50%, 0);
}
.van-popup--left.van-popup--round {
    border-radius: 0 20px 20px 0;
    border-radius: 0 var(--popup-round-border-radius, 20px) var(--popup-round-border-radius, 20px) 0;
}
.van-popup--bottom.van-popup--safe {
    padding-bottom: env(safe-area-inset-bottom);
}
.van-popup--safeTop {
    padding-top: env(safe-area-inset-top);
}
.van-popup__close-icon {
    position: absolute;
    z-index: 1;
    z-index: var(--popup-close-icon-z-index, 1);
    color: #969799;
    color: var(--popup-close-icon-color, #969799);
    font-size: 18px;
    font-size: var(--popup-close-icon-size, 18px);
}
.van-popup__close-icon--top-left {
    top: 16px;
    top: var(--popup-close-icon-margin, 16px);
    left: 16px;
    left: var(--popup-close-icon-margin, 16px);
}
.van-popup__close-icon--top-right {
    top: 16px;
    top: var(--popup-close-icon-margin, 16px);
    right: 16px;
    right: var(--popup-close-icon-margin, 16px);
}
.van-popup__close-icon--bottom-left {
    bottom: 16px;
    bottom: var(--popup-close-icon-margin, 16px);
    left: 16px;
    left: var(--popup-close-icon-margin, 16px);
}
.van-popup__close-icon--bottom-right {
    right: 16px;
    right: var(--popup-close-icon-margin, 16px);
    bottom: 16px;
    bottom: var(--popup-close-icon-margin, 16px);
}
.van-popup__close-icon:active {
    opacity: 0.6;
}
.van-scale-enter-active,
.van-scale-leave-active {
    transition-property: opacity, -webkit-transform;
    transition-property: opacity, transform;
    transition-property: opacity, transform, -webkit-transform;
}
.van-scale-enter,
.van-scale-leave-to {
    -webkit-transform: translate3d(-50%, -50%, 0) scale(0.7);
    transform: translate3d(-50%, -50%, 0) scale(0.7);
    opacity: 0;
}
.van-fade-enter-active,
.van-fade-leave-active {
    transition-property: opacity;
}
.van-fade-enter,
.van-fade-leave-to {
    opacity: 0;
}
.van-center-enter-active,
.van-center-leave-active {
    transition-property: opacity;
}
.van-center-enter,
.van-center-leave-to {
    opacity: 0;
}
.van-bottom-enter-active,
.van-bottom-leave-active,
.van-left-enter-active,
.van-left-leave-active,
.van-right-enter-active,
.van-right-leave-active,
.van-top-enter-active,
.van-top-leave-active {
    transition-property: -webkit-transform;
    transition-property: transform;
    transition-property: transform, -webkit-transform;
}
.van-bottom-enter,
.van-bottom-leave-to {
    -webkit-transform: translate3d(0, 100%, 0);
    transform: translate3d(0, 100%, 0);
}
.van-top-enter,
.van-top-leave-to {
    -webkit-transform: translate3d(0, -100%, 0);
    transform: translate3d(0, -100%, 0);
}
.van-left-enter,
.van-left-leave-to {
    -webkit-transform: translate3d(-100%, -50%, 0);
    transform: translate3d(-100%, -50%, 0);
}
.van-right-enter,
.van-right-leave-to {
    -webkit-transform: translate3d(100%, -50%, 0);
    transform: translate3d(100%, -50%, 0);
}
</style>
