308 lines
9.7 KiB
Vue
308 lines
9.7 KiB
Vue
<template>
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<div :class="wrapClasses">
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<div :class="handlerClasses">
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<a
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@click="up"
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@mousedown="preventDefault"
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:class="upClasses">
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<span :class="innerUpClasses" @click="preventDefault"></span>
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</a>
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<a
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@click="down"
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@mousedown="preventDefault"
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:class="downClasses">
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<span :class="innerDownClasses" @click="preventDefault"></span>
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</a>
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</div>
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<div :class="inputWrapClasses">
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<input
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:id="elementId"
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:class="inputClasses"
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:disabled="disabled"
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autocomplete="off"
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:autofocus="autofocus"
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@focus="focus"
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@blur="blur"
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@keydown.stop="keyDown"
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@input="change"
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@change="change"
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:readonly="readonly || !editable"
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:name="name"
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:value="precisionValue">
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</div>
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</div>
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</template>
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<script>
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import { oneOf } from '../../utils/assist';
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import Emitter from '../../mixins/emitter';
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const prefixCls = 'ivu-input-number';
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const iconPrefixCls = 'ivu-icon';
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function addNum (num1, num2) {
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let sq1, sq2, m;
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try {
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sq1 = num1.toString().split('.')[1].length;
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}
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catch (e) {
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sq1 = 0;
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}
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try {
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sq2 = num2.toString().split('.')[1].length;
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}
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catch (e) {
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sq2 = 0;
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}
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// if (sq1 === 0 || sq2 === 0) {
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// return num1 + num2;
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// } else {
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// m = Math.pow(10, Math.max(sq1, sq2));
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// return (num1 * m + num2 * m) / m;
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// }
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m = Math.pow(10, Math.max(sq1, sq2));
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return (Math.round(num1 * m) + Math.round(num2 * m)) / m;
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}
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export default {
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name: 'InputNumber',
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mixins: [ Emitter ],
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props: {
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max: {
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type: Number,
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default: Infinity
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},
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min: {
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type: Number,
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default: -Infinity
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},
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step: {
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type: Number,
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default: 1
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},
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value: {
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type: Number,
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default: 1
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},
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size: {
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validator (value) {
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return oneOf(value, ['small', 'large', 'default']);
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}
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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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autofocus: {
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type: Boolean,
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default: false
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},
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readonly: {
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type: Boolean,
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default: false
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},
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editable: {
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type: Boolean,
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default: true
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},
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name: {
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type: String
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},
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precision: {
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type: Number
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},
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elementId: {
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type: String
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}
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},
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data () {
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return {
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focused: false,
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upDisabled: false,
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downDisabled: false,
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currentValue: this.value
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};
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},
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computed: {
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wrapClasses () {
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return [
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`${prefixCls}`,
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{
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[`${prefixCls}-${this.size}`]: !!this.size,
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[`${prefixCls}-disabled`]: this.disabled,
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[`${prefixCls}-focused`]: this.focused
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}
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];
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},
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handlerClasses () {
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return `${prefixCls}-handler-wrap`;
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},
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upClasses () {
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return [
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`${prefixCls}-handler`,
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`${prefixCls}-handler-up`,
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{
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[`${prefixCls}-handler-up-disabled`]: this.upDisabled
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}
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];
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},
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innerUpClasses () {
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return `${prefixCls}-handler-up-inner ${iconPrefixCls} ${iconPrefixCls}-ios-arrow-up`;
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},
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downClasses () {
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return [
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`${prefixCls}-handler`,
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`${prefixCls}-handler-down`,
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{
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[`${prefixCls}-handler-down-disabled`]: this.downDisabled
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}
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];
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},
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innerDownClasses () {
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return `${prefixCls}-handler-down-inner ${iconPrefixCls} ${iconPrefixCls}-ios-arrow-down`;
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},
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inputWrapClasses () {
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return `${prefixCls}-input-wrap`;
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},
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inputClasses () {
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return `${prefixCls}-input`;
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},
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precisionValue () {
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// can not display 1.0
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return this.precision ? this.currentValue.toFixed(this.precision) : this.currentValue;
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}
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},
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methods: {
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preventDefault (e) {
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e.preventDefault();
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},
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up (e) {
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const targetVal = Number(e.target.value);
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if (this.upDisabled && isNaN(targetVal)) {
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return false;
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}
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this.changeStep('up', e);
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},
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down (e) {
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const targetVal = Number(e.target.value);
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if (this.downDisabled && isNaN(targetVal)) {
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return false;
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}
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this.changeStep('down', e);
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},
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changeStep (type, e) {
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if (this.disabled || this.readonly) {
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return false;
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}
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const targetVal = Number(e.target.value);
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let val = Number(this.currentValue);
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const step = Number(this.step);
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if (isNaN(val)) {
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return false;
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}
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// input a number, and key up or down
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if (!isNaN(targetVal)) {
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if (type === 'up') {
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if (addNum(targetVal, step) <= this.max) {
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val = targetVal;
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} else {
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return false;
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}
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} else if (type === 'down') {
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if (addNum(targetVal, -step) >= this.min) {
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val = targetVal;
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} else {
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return false;
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}
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}
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}
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if (type === 'up') {
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val = addNum(val, step);
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} else if (type === 'down') {
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val = addNum(val, -step);
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}
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this.setValue(val);
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},
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setValue (val) {
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// 如果 step 是小数，且没有设置 precision，是有问题的
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if (!isNaN(this.precision)) val = Number(Number(val).toFixed(this.precision));
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this.$nextTick(() => {
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this.currentValue = val;
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this.$emit('input', val);
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this.$emit('on-change', val);
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this.dispatch('FormItem', 'on-form-change', val);
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});
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},
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focus () {
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this.focused = true;
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},
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blur () {
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this.focused = false;
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},
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keyDown (e) {
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if (e.keyCode === 38) {
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e.preventDefault();
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this.up(e);
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} else if (e.keyCode === 40) {
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e.preventDefault();
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this.down(e);
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}
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},
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change (event) {
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let val = event.target.value.trim();
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if (event.type == 'input' && val.match(/^\-?\.?$|\.$/)) return; // prevent fire early if decimal. If no more input the change event will fire later
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if (event.type == 'change' && Number(val) === this.currentValue) return; // already fired change for input event
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const {min, max} = this;
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const isEmptyString = val.length === 0;
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val = Number(val);
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if (!isNaN(val) && !isEmptyString) {
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this.currentValue = val;
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if (val > max) {
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this.setValue(max);
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} else if (val < min) {
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this.setValue(min);
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} else {
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this.setValue(val);
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}
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} else {
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event.target.value = this.currentValue;
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}
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},
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changeVal (val) {
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val = Number(val);
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if (!isNaN(val)) {
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const step = this.step;
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this.upDisabled = val + step > this.max;
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this.downDisabled = val - step < this.min;
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} else {
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this.upDisabled = true;
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this.downDisabled = true;
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}
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}
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},
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mounted () {
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this.changeVal(this.currentValue);
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},
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watch: {
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value (val) {
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this.currentValue = val;
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},
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currentValue (val) {
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this.changeVal(val);
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},
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min () {
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this.changeVal(this.currentValue);
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},
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max () {
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this.changeVal(this.currentValue);
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}
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}
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};
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</script>
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