2a09d1a4
 liuqimichale
添加宜春 天水 宣化
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export default {
data() {
return {
hoverOption: -1
};
},
computed: {
optionsAllDisabled() {
return this.options.filter(option => option.visible).every(option => option.disabled);
}
},
watch: {
hoverIndex(val) {
if (typeof val === 'number' && val > -1) {
this.hoverOption = this.options[val] || {};
}
this.options.forEach(option => {
option.hover = this.hoverOption === option;
});
}
},
methods: {
navigateOptions(direction) {
if (!this.visible) {
this.visible = true;
return;
}
if (this.options.length === 0 || this.filteredOptionsCount === 0) return;
if (!this.optionsAllDisabled) {
if (direction === 'next') {
this.hoverIndex++;
if (this.hoverIndex === this.options.length) {
this.hoverIndex = 0;
}
} else if (direction === 'prev') {
this.hoverIndex--;
if (this.hoverIndex < 0) {
this.hoverIndex = this.options.length - 1;
}
}
const option = this.options[this.hoverIndex];
if (option.disabled === true ||
option.groupDisabled === true ||
!option.visible) {
this.navigateOptions(direction);
}
this.$nextTick(() => this.scrollToOption(this.hoverOption));
}
}
}
};
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