7820380e
 “wangming”
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<script>
export default {
props: {
isAutoWidth: Boolean,
updateAll: Boolean
},
inject: ['elForm', 'elFormItem'],
render() {
const slots = this.$slots.default;
if (!slots) return null;
if (this.isAutoWidth) {
const autoLabelWidth = this.elForm.autoLabelWidth;
const style = {};
if (autoLabelWidth && autoLabelWidth !== 'auto') {
const marginLeft = parseInt(autoLabelWidth, 10) - this.computedWidth;
if (marginLeft) {
style.marginLeft = marginLeft + 'px';
}
}
return (<div class="el-form-item__label-wrap" style={style}>
{ slots }
</div>);
} else {
return slots[0];
}
},
methods: {
getLabelWidth() {
if (this.$el && this.$el.firstElementChild) {
const computedWidth = window.getComputedStyle(this.$el.firstElementChild).width;
return Math.ceil(parseFloat(computedWidth));
} else {
return 0;
}
},
updateLabelWidth(action = 'update') {
if (this.$slots.default && this.isAutoWidth && this.$el.firstElementChild) {
if (action === 'update') {
this.computedWidth = this.getLabelWidth();
} else if (action === 'remove') {
this.elForm.deregisterLabelWidth(this.computedWidth);
}
}
}
},
watch: {
computedWidth(val, oldVal) {
if (this.updateAll) {
this.elForm.registerLabelWidth(val, oldVal);
this.elFormItem.updateComputedLabelWidth(val);
}
}
},
data() {
return {
computedWidth: 0
};
},
mounted() {
this.updateLabelWidth('update');
},
updated() {
this.updateLabelWidth('update');
},
beforeDestroy() {
this.updateLabelWidth('remove');
}
};
</script>
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