388 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Vue
		
	
	
	
			
		
		
	
	
			388 lines
		
	
	
		
			11 KiB
		
	
	
	
		
			Vue
		
	
	
	
| <template>
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| 	<view
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| 		class="u-input"
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| 		:class="{
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| 			'u-input--border': border,
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| 			'u-input--error': validateState
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| 		}"
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| 		:style="{
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| 			padding: `0 ${border ? 20 : 0}rpx`,
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| 			borderColor: borderColor,
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| 			textAlign: inputAlign
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| 		}"
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| 		@tap.stop="inputClick"
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| 	>
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| 		<textarea
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| 			v-if="type == 'textarea'"
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| 			class="u-input__input u-input__textarea"
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| 			:style="[getStyle]"
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| 			:value="defaultValue"
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| 			:placeholder="placeholder"
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| 			:placeholderStyle="placeholderStyle"
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| 			:disabled="disabled"
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| 			:maxlength="inputMaxlength"
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| 			:fixed="fixed"
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| 			:focus="focus"
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| 			:autoHeight="autoHeight"
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| 			:selection-end="uSelectionEnd"
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| 			:selection-start="uSelectionStart"
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| 			:cursor-spacing="getCursorSpacing"
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| 			:show-confirm-bar="showConfirmbar"
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| 			@input="handleInput"
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| 			@blur="handleBlur"
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| 			@focus="onFocus"
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| 			@confirm="onConfirm"
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| 		/>
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| 		<input
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| 			v-else
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| 			class="u-input__input"
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| 			:type="type == 'password' ? 'text' : type"
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| 			:style="[getStyle]"
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| 			:value="defaultValue"
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| 			:password="type == 'password' && !showPassword"
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| 			:placeholder="placeholder"
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| 			:placeholderStyle="placeholderStyle"
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| 			:disabled="disabled || type === 'select'"
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| 			:maxlength="inputMaxlength"
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| 			:focus="focus"
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| 			:confirmType="confirmType"
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| 			:cursor-spacing="getCursorSpacing"
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| 			:selection-end="uSelectionEnd"
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| 			:selection-start="uSelectionStart"
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| 			:show-confirm-bar="showConfirmbar"
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| 			@focus="onFocus"
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| 			@blur="handleBlur"
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| 			@input="handleInput"
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| 			@confirm="onConfirm"
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| 		/>
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| 		<view class="u-input__right-icon u-flex">
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| 			<view class="u-input__right-icon__clear u-input__right-icon__item" @tap="onClear" v-if="clearable && value != '' && focused">
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| 				<u-icon size="32" name="close-circle-fill" color="#c0c4cc"/>
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| 			</view>
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| 			<view class="u-input__right-icon__clear u-input__right-icon__item" v-if="passwordIcon && type == 'password'">
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| 				<u-icon size="32" :name="!showPassword ? 'eye' : 'eye-fill'" color="#c0c4cc" @click="showPassword = !showPassword"/>
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| 			</view>
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| 			<view class="u-input__right-icon--select u-input__right-icon__item" v-if="type == 'select'" :class="{
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| 				'u-input__right-icon--select--reverse': selectOpen
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| 			}">
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| 				<u-icon name="arrow-down-fill" size="26" color="#c0c4cc"></u-icon>
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| 			</view>
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| 		</view>
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| 	</view>
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| </template>
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| 
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| <script>
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| import Emitter from '../../libs/util/emitter.js';
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| 
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| /**
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|  * input 输入框
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|  * @description 此组件为一个输入框,默认没有边框和样式,是专门为配合表单组件u-form而设计的,利用它可以快速实现表单验证,输入内容,下拉选择等功能。
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|  * @tutorial http://uviewui.com/components/input.html
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|  * @property {String} type 模式选择,见官网说明
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|  * @property {Boolean} clearable 是否显示右侧的清除图标(默认true)
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|  * @property {} v-model 用于双向绑定输入框的值
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|  * @property {String} input-align 输入框文字的对齐方式(默认left)
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|  * @property {String} placeholder placeholder显示值(默认 '请输入内容')
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|  * @property {Boolean} disabled 是否禁用输入框(默认false)
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|  * @property {String Number} maxlength 输入框的最大可输入长度(默认140)
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|  * @property {String Number} selection-start 光标起始位置,自动聚焦时有效,需与selection-end搭配使用(默认-1)
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|  * @property {String Number} maxlength 光标结束位置,自动聚焦时有效,需与selection-start搭配使用(默认-1)
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|  * @property {String Number} cursor-spacing 指定光标与键盘的距离,单位px(默认0)
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|  * @property {String} placeholderStyle placeholder的样式,字符串形式,如"color: red;"(默认 "color: #c0c4cc;")
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|  * @property {String} confirm-type 设置键盘右下角按钮的文字,仅在type为text时生效(默认done)
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|  * @property {Object} custom-style 自定义输入框的样式,对象形式
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|  * @property {Boolean} focus 是否自动获得焦点(默认false)
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|  * @property {Boolean} fixed 如果type为textarea,且在一个"position:fixed"的区域,需要指明为true(默认false)
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|  * @property {Boolean} password-icon type为password时,是否显示右侧的密码查看图标(默认true)
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|  * @property {Boolean} border 是否显示边框(默认false)
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|  * @property {String} border-color 输入框的边框颜色(默认#dcdfe6)
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|  * @property {Boolean} auto-height 是否自动增高输入区域,type为textarea时有效(默认true)
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|  * @property {String Number} height 高度,单位rpx(text类型时为70,textarea时为100)
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|  * @example <u-input v-model="value" :type="type" :border="border" />
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|  */
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| export default {
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| 	name: 'u-input',
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| 	mixins: [Emitter],
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| 	props: {
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| 		value: {
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| 			type: [String, Number],
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| 			default: ''
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| 		},
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| 		// 输入框的类型,textarea,text,number
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| 		type: {
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| 			type: String,
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| 			default: 'text'
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| 		},
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| 		inputAlign: {
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| 			type: String,
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| 			default: 'left'
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| 		},
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| 		placeholder: {
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| 			type: String,
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| 			default: '请输入内容'
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| 		},
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| 		disabled: {
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| 			type: Boolean,
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| 			default: false
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| 		},
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| 		maxlength: {
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| 			type: [Number, String],
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| 			default: 140
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| 		},
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| 		placeholderStyle: {
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| 			type: String,
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| 			default: 'color: #c0c4cc;'
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| 		},
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| 		confirmType: {
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| 			type: String,
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| 			default: 'done'
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| 		},
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| 		// 输入框的自定义样式
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| 		customStyle: {
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| 			type: Object,
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| 			default() {
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| 				return {};
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| 			}
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| 		},
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| 		// 如果 textarea 是在一个 position:fixed 的区域,需要显示指定属性 fixed 为 true
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| 		fixed: {
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| 			type: Boolean,
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| 			default: false
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| 		},
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| 		// 是否自动获得焦点
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| 		focus: {
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| 			type: Boolean,
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| 			default: false
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| 		},
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| 		// 密码类型时,是否显示右侧的密码图标
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| 		passwordIcon: {
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| 			type: Boolean,
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| 			default: true
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| 		},
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| 		// input|textarea是否显示边框
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| 		border: {
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| 			type: Boolean,
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| 			default: false
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| 		},
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| 		// 输入框的边框颜色
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| 		borderColor: {
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| 			type: String,
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| 			default: '#dcdfe6'
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| 		},
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| 		autoHeight: {
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| 			type: Boolean,
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| 			default: true
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| 		},
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| 		// type=select时,旋转右侧的图标,标识当前处于打开还是关闭select的状态
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| 		// open-打开,close-关闭
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| 		selectOpen: {
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| 			type: Boolean,
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| 			default: false
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| 		},
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| 		// 高度,单位rpx
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| 		height: {
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| 			type: [Number, String],
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| 			default: ''
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| 		},
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| 		// 是否可清空
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| 		clearable: {
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| 			type: Boolean,
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| 			default: true
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| 		},
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| 		// 指定光标与键盘的距离,单位 px
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| 		cursorSpacing: {
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| 			type: [Number, String],
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| 			default: 0
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| 		},
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| 		// 光标起始位置,自动聚焦时有效,需与selection-end搭配使用
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| 		selectionStart: {
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| 			type: [Number, String],
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| 			default: -1
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| 		},
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| 		// 光标结束位置,自动聚焦时有效,需与selection-start搭配使用
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| 		selectionEnd: {
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| 			type: [Number, String],
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| 			default: -1
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| 		},
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| 		// 是否自动去除两端的空格
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| 		trim: {
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| 			type: Boolean,
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| 			default: true
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| 		},
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| 		// 是否显示键盘上方带有”完成“按钮那一栏
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| 		showConfirmbar:{
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| 			type:Boolean,
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| 			default:true
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| 		}
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| 	},
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| 	data() {
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| 		return {
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| 			defaultValue: this.value,
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| 			inputHeight: 70, // input的高度
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| 			textareaHeight: 100, // textarea的高度
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| 			validateState: false, // 当前input的验证状态,用于错误时,边框是否改为红色
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| 			focused: false, // 当前是否处于获得焦点的状态
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| 			showPassword: false, // 是否预览密码
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| 			lastValue: '', // 用于头条小程序,判断@input中,前后的值是否发生了变化,因为头条中文下,按下键没有输入内容,也会触发@input时间
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| 		};
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| 	},
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| 	watch: {
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| 		value(nVal, oVal) {
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| 			this.defaultValue = nVal;
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| 			// 当值发生变化,且为select类型时(此时input被设置为disabled,不会触发@input事件),模拟触发@input事件
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| 			if(nVal != oVal && this.type == 'select') this.handleInput({
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| 				detail: {
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| 					value: nVal
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| 				}
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| 			})
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| 		},
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| 	},
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| 	computed: {
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| 		// 因为uniapp的input组件的maxlength组件必须要数值,这里转为数值,给用户可以传入字符串数值
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| 		inputMaxlength() {
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| 			return Number(this.maxlength);
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| 		},
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| 		getStyle() {
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| 			let style = {};
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| 			// 如果没有自定义高度,就根据type为input还是textare来分配一个默认的高度
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| 			style.minHeight = this.height ? this.height + 'rpx' : this.type == 'textarea' ?
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| 				this.textareaHeight + 'rpx' : this.inputHeight + 'rpx';
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| 			style = Object.assign(style, this.customStyle);
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| 			return style;
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| 		},
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| 		//
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| 		getCursorSpacing() {
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| 			return Number(this.cursorSpacing);
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| 		},
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| 		// 光标起始位置
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| 		uSelectionStart() {
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| 			return String(this.selectionStart);
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| 		},
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| 		// 光标结束位置
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| 		uSelectionEnd() {
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| 			return String(this.selectionEnd);
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| 		}
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| 	},
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| 	created() {
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| 		// 监听u-form-item发出的错误事件,将输入框边框变红色
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| 		this.$on('on-form-item-error', this.onFormItemError);
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| 	},
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| 	methods: {
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| 		/**
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| 		 * change 事件
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| 		 * @param event
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| 		 */
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| 		handleInput(event) {
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| 			let value = event.detail.value;
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| 			// 判断是否去除空格
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| 			if(this.trim) value = this.$u.trim(value);
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| 			// vue 原生的方法 return 出去
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| 			this.$emit('input', value);
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| 			// 当前model 赋值
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| 			this.defaultValue = value;
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| 			// 过一个生命周期再发送事件给u-form-item,否则this.$emit('input')更新了父组件的值,但是微信小程序上
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| 			// 尚未更新到u-form-item,导致获取的值为空,从而校验混论
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| 			// 这里不能延时时间太短,或者使用this.$nextTick,否则在头条上,会造成混乱
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| 			setTimeout(() => {
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| 				// 头条小程序由于自身bug,导致中文下,每按下一个键(尚未完成输入),都会触发一次@input,导致错误,这里进行判断处理
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| 				// #ifdef MP-TOUTIAO
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| 				if(this.$u.trim(value) == this.lastValue) return ;
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| 				this.lastValue = value;
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| 				// #endif
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| 				// 将当前的值发送到 u-form-item 进行校验
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| 				this.dispatch('u-form-item', 'on-form-change', value);
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| 			}, 40)
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| 		},
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| 		/**
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| 		 * blur 事件
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| 		 * @param event
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| 		 */
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| 		handleBlur(event) {
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| 			// 最开始使用的是监听图标@touchstart事件,自从hx2.8.4后,此方法在微信小程序出错
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| 			// 这里改为监听点击事件,手点击清除图标时,同时也发生了@blur事件,导致图标消失而无法点击,这里做一个延时
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| 			setTimeout(() => {
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| 				this.focused = false;
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| 			}, 100)
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| 			// vue 原生的方法 return 出去
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| 			this.$emit('blur', event.detail.value);
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| 			setTimeout(() => {
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| 				// 头条小程序由于自身bug,导致中文下,每按下一个键(尚未完成输入),都会触发一次@input,导致错误,这里进行判断处理
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| 				// #ifdef MP-TOUTIAO
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| 				if(this.$u.trim(value) == this.lastValue) return ;
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| 				this.lastValue = value;
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| 				// #endif
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| 				// 将当前的值发送到 u-form-item 进行校验
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| 				this.dispatch('u-form-item', 'on-form-blur', event.detail.value);
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| 			}, 40)
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| 		},
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| 		onFormItemError(status) {
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| 			this.validateState = status;
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| 		},
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| 		onFocus(event) {
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| 			this.focused = true;
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| 			this.$emit('focus');
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| 		},
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| 		onConfirm(e) {
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| 			this.$emit('confirm', e.detail.value);
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| 		},
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| 		onClear(event) {
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| 			this.$emit('input', '');
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| 		},
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| 		inputClick() {
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| 			this.$emit('click');
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| 		}
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| 	}
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| };
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| </script>
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| 
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| <style lang="scss" scoped>
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| @import "../../libs/css/style.components.scss";
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| 
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| .u-input {
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| 	position: relative;
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| 	flex: 1;
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| 	@include vue-flex;
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| 
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| 	&__input {
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| 		//height: $u-form-item-height;
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| 		font-size: 28rpx;
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| 		color: $u-main-color;
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| 		flex: 1;
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| 	}
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| 
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| 	&__textarea {
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| 		width: auto;
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| 		font-size: 28rpx;
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| 		color: $u-main-color;
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| 		padding: 10rpx 0;
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| 		line-height: normal;
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| 		flex: 1;
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| 	}
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| 
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| 	&--border {
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| 		border-radius: 6rpx;
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| 		border-radius: 4px;
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| 		border: 1px solid $u-form-item-border-color;
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| 	}
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| 
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| 	&--error {
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| 		border-color: $u-type-error!important;
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| 	}
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| 
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| 	&__right-icon {
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| 
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| 		&__item {
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| 			margin-left: 10rpx;
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| 		}
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| 
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| 		&--select {
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| 			transition: transform .4s;
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| 
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| 			&--reverse {
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| 				transform: rotate(-180deg);
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| 			}
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| 		}
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| 	}
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| }
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| </style>
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