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<template>
<view class="u-navbar">
<view
class="u-navbar__placeholder"
v-if="fixed && placeholder"
:style="{
height: $u.addUnit($u.getPx(height) + $u.sys().statusBarHeight,'px'),
}"
></view>
<view :class="[fixed && 'u-navbar--fixed']">
<u-status-bar
v-if="safeAreaInsetTop"
:bgColor="bgColor"
></u-status-bar>
<view
class="u-navbar__content"
:class="[border && 'u-border-bottom']"
:style="{
height: $u.addUnit(height),
backgroundColor: bgColor,
}"
>
<view
class="u-navbar__content__left"
hover-class="u-navbar__content__left--hover"
hover-start-time="150"
@tap="leftClick"
>
<slot name="left">
<u-icon
v-if="leftIcon"
:name="leftIcon"
:size="leftIconSize"
:color="leftIconColor"
></u-icon>
<text
v-if="leftText"
:style="{
color: leftIconColor
}"
class="u-navbar__content__left__text"
>{{ leftText }}</text>
</slot>
</view>
<slot name="center">
<text
class="u-line-1 u-navbar__content__title"
:style="[{
width: $u.addUnit(titleWidth),
}, $u.addStyle(titleStyle)]"
>{{ title }}</text>
</slot>
<view
class="u-navbar__content__right"
v-if="$slots.right || rightIcon || rightText"
@tap="rightClick"
>
<slot name="right">
<u-icon
v-if="rightIcon"
:name="rightIcon"
size="20"
></u-icon>
<text
v-if="rightText"
class="u-navbar__content__right__text"
>{{ rightText }}</text>
</slot>
</view>
</view>
</view>
</view>
</template>
<script>
import props from './props.js';
/**
* Navbar 自定义导航栏
* @description 此组件一般用于在特殊情况下,需要自定义导航栏的时候用到,一般建议使用uni-app带的导航栏。
* @tutorial https://www.uviewui.com/components/navbar.html
* @property {Boolean} safeAreaInsetTop 是否开启顶部安全区适配 (默认 true )
* @property {Boolean} placeholder 固定在顶部时,是否生成一个等高元素,以防止塌陷 (默认 false )
* @property {Boolean} fixed 导航栏是否固定在顶部 (默认 false )
* @property {Boolean} border 导航栏底部是否显示下边框 (默认 false )
* @property {String} leftIcon 左边返回图标的名称,只能为uView自带的图标 (默认 'arrow-left' )
* @property {String} leftText 左边的提示文字
* @property {String} rightText 右边的提示文字
* @property {String} rightIcon 右边返回图标的名称,只能为uView自带的图标
* @property {String} title 导航栏标题,如设置为空字符,将会隐藏标题占位区域
* @property {String} bgColor 导航栏背景设置 (默认 '#ffffff' )
* @property {String | Number} titleWidth 导航栏标题的最大宽度,内容超出会以省略号隐藏 (默认 '400rpx' )
* @property {String | Number} height 导航栏高度(不包括状态栏高度在内,内部自动加上)(默认 '44px' )
* @property {String | Number} leftIconSize 左侧返回图标的大小(默认 20px )
* @property {String | Number} leftIconColor 左侧返回图标的颜色(默认 #303133 )
* @property {Boolean} autoBack 点击左侧区域(返回图标),是否自动返回上一页(默认 false )
* @property {Object | String} titleStyle 标题的样式,对象或字符串
* @event {Function} leftClick 点击左侧区域
* @event {Function} rightClick 点击右侧区域
* @example <u-navbar title="剑未配妥,出门已是江湖" left-text="返回" right-text="帮助" @click-left="onClickBack" @click-right="onClickRight"></u-navbar>
*/
export default {
name: 'u-navbar',
mixins: [uni.$u.mpMixin, uni.$u.mixin, props],
data() {
return {
}
},
methods: {
// 点击左侧区域
leftClick() {
// 如果配置了autoBack,自动返回上一页
this.$emit('leftClick')
if(this.autoBack) {
uni.navigateBack()
}
},
// 点击右侧区域
rightClick() {
this.$emit('rightClick')
},
}
}
</script>
<style lang="scss" scoped>
@import "../../libs/css/components.scss";
.u-navbar {
&--fixed {
position: fixed;
left: 0;
right: 0;
top: 0;
z-index: 11;
}
&__content {
@include flex(row);
align-items: center;
height: 44px;
background-color: #9acafc;
position: relative;
justify-content: center;
&__left,
&__right {
padding: 0 13px;
position: absolute;
top: 0;
bottom: 0;
@include flex(row);
align-items: center;
}
&__left {
left: 0;
&--hover {
opacity: 0.7;
}
&__text {
font-size: 15px;
margin-left: 3px;
}
}
&__title {
text-align: center;
font-size: 16px;
color: $u-main-color;
}
&__right {
right: 0;
&__text {
font-size: 15px;
margin-left: 3px;
}
}
}
}
</style>