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<template>
<div class="cw-tabs">
<div role="tablist" class="cw-tabs-nav">
<button
v-for="(tab, index) in sortedTabs"
:key="index"
:class="[
tab.isActive ? 'is-active' : '',
tab.icon !== '' && tab.name !== '' ? 'cw-tabs-nav-icon-text-' + tab.icon : '',
tab.icon !== '' && tab.name === '' ? 'cw-tabs-nav-icon-solo-' + tab.icon : '',
]"
:aria-selected="tab.isActive"
:aria-controls="tab.id"
:id="tab.selectorId"
:tabindex="tab.isActive ? 0 : -1"
@click="selectTab(tab.selectorId)"
@keydown="handleKeyEvent($event)"
:ref="tab.selectorId"
>
{{ tab.name }}
</button>
</div>
<div class="cw-tabs-content">
<slot></slot>
</div>
</div>
</template>
<script>
export default {
name: 'courseware-tabs',
props: {
setSelected: { type: Number, required: false, default: 0 }
},
data() {
return {
tabs: [],
};
},
computed: {
sortedTabs() {
return [...this.tabs].sort((a, b) => {
return a.index - b.index;
});
}
},
created() {
this.tabs = this.$children;
},
methods: {
selectTab(selectorId) {
let view = this;
this.tabs.forEach((tab) => {
tab.isActive = false;
if (tab.selectorId === selectorId) {
tab.isActive = true;
view.$refs[selectorId][0].focus();
view.$emit('selectTab', tab);
}
});
},
selectTabByIndex(selectedIndex) {
let view = this;
this.tabs.forEach((tab) => {
tab.isActive = false;
if (tab.index === selectedIndex) {
tab.isActive = true;
view.$refs[tab.selectorId][0].focus();
view.$emit('selectTab', tab);
}
});
},
handleKeyEvent(e) {
let tablist = e.target.parentElement;
switch (e.keyCode) {
case 37: // left
case 38: // up
if (tablist.firstChild.id !== e.target.id) {
this.selectTab(e.target.previousElementSibling.id);
} else {
this.selectTab(tablist.lastChild.id);
}
break;
case 39: // right
case 40: // down
if (tablist.lastChild.id !== e.target.id) {
this.selectTab(e.target.nextElementSibling.id);
} else {
this.selectTab(tablist.firstChild.id);
}
break;
case 36: //pos1
this.selectTab(tablist.firstChild.id);
break;
case 35: //end
this.selectTab(tablist.lastChild.id);
break;
}
},
getButtonById(id) {
return this.$refs[id][0];
},
getFirstTabButton() {
let selectorId = this.sortedTabs[0].selectorId;
return this.$refs[selectorId][0];
},
getTabButtonByName(name) {
let selectorId = null;
this.tabs.forEach((tab) => {
if (tab.name === name) {
selectorId = tab.selectorId;
}
});
if (selectorId) {
return this.$refs[selectorId][0];
}
return null;
},
getTabButtonByAlias(alias) {
let selectorId = null;
this.tabs.forEach((tab) => {
if (tab.alias === alias) {
selectorId = tab.selectorId;
}
});
if (selectorId) {
return this.$refs[selectorId][0];
}
return null;
},
},
watch: {
setSelected(tab) {
this.selectTabByIndex(tab);
}
}
};
</script>
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