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<template>
<div :class="wrapClasses">
<div :class="handlerClasses">
<a
@click="up"
@mouse.down="preventDefault"
:class="upClasses">
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<span :class="innerUpClasses" @click="preventDefault"></span>
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</a>
<a
@click="down"
@mouse.down="preventDefault"
:class="downClasses">
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<span :class="innerDownClasses" @click="preventDefault"></span>
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</a>
</div>
<div :class="inputWrapClasses">
<input
:class="inputClasses"
:disabled="disabled"
autoComplete="off"
@focus="focus"
@blur="blur"
@keydown.stop="keyDown"
@change="change"
:value="value">
</div>
</div>
</template>
<script>
import { oneOf } from '../../utils/assist';
const prefixCls = 'ivu-input-number';
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const iconPrefixCls = 'ivu-icon';
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function isValueNumber (value) {
return (/(^-?[0-9]+\.{1}\d+$)|(^-?[1-9][0-9]*$)/).test(value + '');
}
function addNum (num1, num2) {
var sq1, sq2, m;
try {
sq1 = num1.toString().split(".")[1].length;
}
catch (e) {
sq1 = 0;
}
try {
sq2 = num2.toString().split(".")[1].length;
}
catch (e) {
sq2 = 0;
}
// if (sq1 === 0 || sq2 === 0) {
// return num1 + num2;
// } else {
// m = Math.pow(10, Math.max(sq1, sq2));
// return (num1 * m + num2 * m) / m;
// }
m = Math.pow(10, Math.max(sq1, sq2));
return (num1 * m + num2 * m) / m;
}
export default {
props: {
max: {
type: Number,
default: Infinity
},
min: {
type: Number,
default: -Infinity
},
step: {
type: Number,
default: 1
},
value: {
type: Number,
default: 1
},
size: {
validator (value) {
return oneOf(value, ['small', 'large']);
}
},
disabled: {
type: Boolean,
default: false
}
},
data () {
return {
focused: false,
upDisabled: false,
downDisabled: false
}
},
computed: {
wrapClasses () {
return [
`${prefixCls}`,
{
[`${prefixCls}-${this.size}`]: !!this.size,
[`${prefixCls}-disabled`]: this.disabled,
[`${prefixCls}-focused`]: this.focused
}
]
},
handlerClasses () {
return `${prefixCls}-handler-wrap`;
},
upClasses () {
return [
`${prefixCls}-handler`,
`${prefixCls}-handler-up`,
{
[`${prefixCls}-handler-up-disabled`]: this.upDisabled
}
]
},
innerUpClasses () {
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return `${prefixCls}-handler-up-inner ${iconPrefixCls} ${iconPrefixCls}-ios-arrow-up`;
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},
downClasses () {
return [
`${prefixCls}-handler`,
`${prefixCls}-handler-down`,
{
[`${prefixCls}-handler-down-disabled`]: this.downDisabled
}
]
},
innerDownClasses () {
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return `${prefixCls}-handler-down-inner ${iconPrefixCls} ${iconPrefixCls}-ios-arrow-down`;
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},
inputWrapClasses () {
return `${prefixCls}-input-wrap`;
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},
inputClasses () {
return `${prefixCls}-input`;
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}
},
methods: {
preventDefault (e) {
e.preventDefault();
},
up () {
if (this.upDisabled) {
return false;
}
this.changeStep('up');
},
down () {
if (this.downDisabled) {
return false;
}
this.changeStep('down');
},
changeStep (type) {
if (this.disabled) {
return false;
}
let val = Number(this.value);
const step = Number(this.step);
if (isNaN(val)) {
return false;
}
if (type == 'up') {
val = addNum(val, step);
} else if (type == 'down') {
val = addNum(val, -step);
}
this.setValue(val);
},
setValue (val) {
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this.$nextTick(() => {
this.value = val;
});
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this.$emit('on-change', val);
},
focus () {
this.focused = true;
},
blur () {
this.focused = false;
},
keyDown (e) {
if (e.keyCode === 38) {
e.preventDefault();
this.up()
} else if (e.keyCode === 40) {
e.preventDefault();
this.down()
}
},
change (event) {
let val = event.target.value.trim();
const max = this.max;
const min = this.min;
if (isValueNumber(val)) {
val = Number(val);
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this.value = val;
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if (val > max) {
this.setValue(max);
} else if (val < min) {
this.setValue(min);
} else {
this.setValue(val);
}
} else {
event.target.value = this.value;
}
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},
changeVal (val) {
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if (isValueNumber(val) || val === 0) {
val = Number(val);
const step = this.step;
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this.upDisabled = val + step > this.max;
this.downDisabled = val - step < this.min;
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} else {
this.upDisabled = true;
this.downDisabled = true;
}
}
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},
ready () {
this.changeVal(this.value);
},
watch: {
value (val) {
this.changeVal(val);
}
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}
}
</script>
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