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<script>
import { GlDropdownForm, GlDropdownItem, GlLoadingIcon, GlIntersectionObserver } from '@gitlab/ui';
import fuzzaldrinPlus from 'fuzzaldrin-plus';
import { createAlert } from '~/alert';
import { getIdFromGraphQLId } from '~/graphql_shared/utils';
import { __ } from '~/locale';
import { workspaceLabelsQueries } from '../../../constants';
import LabelItem from './label_item.vue';
export default {
components: {
GlDropdownForm,
GlDropdownItem,
GlLoadingIcon,
GlIntersectionObserver,
LabelItem,
},
model: {
prop: 'localSelectedLabels',
},
props: {
allowMultiselect: {
type: Boolean,
required: true,
},
localSelectedLabels: {
type: Array,
required: true,
},
fullPath: {
type: String,
required: true,
},
searchKey: {
type: String,
required: true,
},
workspaceType: {
type: String,
required: true,
},
},
data() {
return {
labels: [],
isVisible: false,
};
},
apollo: {
labels: {
query() {
return workspaceLabelsQueries[this.workspaceType].query;
},
variables() {
return {
fullPath: this.fullPath,
searchTerm: this.searchKey,
};
},
skip() {
return this.searchKey.length === 1 || !this.isVisible;
},
update: (data) => data.workspace?.labels?.nodes || [],
error() {
createAlert({ message: __('Error fetching labels.') });
},
},
},
computed: {
labelsFetchInProgress() {
return this.$apollo.queries.labels.loading;
},
localSelectedLabelsIds() {
return this.localSelectedLabels.map((label) => getIdFromGraphQLId(label.id));
},
visibleLabels() {
if (this.searchKey) {
return fuzzaldrinPlus.filter(this.labels, this.searchKey, {
key: ['title'],
});
}
return this.labels;
},
showNoMatchingResultsMessage() {
return Boolean(this.searchKey) && this.visibleLabels.length === 0;
},
shouldHighlightFirstItem() {
return this.searchKey !== '' && this.visibleLabels.length > 0;
},
},
methods: {
isLabelSelected(label) {
return this.localSelectedLabelsIds.includes(getIdFromGraphQLId(label.id));
},
/**
* This method scrolls item from dropdown into
* the view if it is off the viewable area of the
* container.
*/
scrollIntoViewIfNeeded() {
const highlightedLabel = this.$refs.labelsListContainer.querySelector('.is-focused');
if (highlightedLabel) {
const container = this.$refs.labelsListContainer.getBoundingClientRect();
const label = highlightedLabel.getBoundingClientRect();
if (label.bottom > container.bottom) {
this.$refs.labelsListContainer.scrollTop += label.bottom - container.bottom;
} else if (label.top < container.top) {
this.$refs.labelsListContainer.scrollTop -= container.top - label.top;
}
}
},
updateSelectedLabels(label) {
let labels;
if (this.isLabelSelected(label)) {
labels = this.localSelectedLabels.filter(
({ id }) => id !== getIdFromGraphQLId(label.id) && id !== label.id,
);
} else {
labels = [...this.localSelectedLabels, label];
}
this.$emit('input', labels);
},
handleLabelClick(label) {
this.updateSelectedLabels(label);
if (!this.allowMultiselect) {
this.$emit('closeDropdown', this.localSelectedLabels);
}
},
onDropdownAppear() {
this.isVisible = true;
},
selectFirstItem() {
if (this.shouldHighlightFirstItem) {
this.handleLabelClick(this.visibleLabels[0]);
}
},
},
};
</script>
<template>
<gl-intersection-observer @appear="onDropdownAppear">
<gl-dropdown-form class="labels-select-contents-list js-labels-list">
<div ref="labelsListContainer" data-testid="dropdown-content">
<gl-loading-icon
v-if="labelsFetchInProgress"
class="labels-fetch-loading gl-align-items-center gl-w-full gl-h-full gl-mb-3"
size="lg"
/>
<template v-else>
<gl-dropdown-item
v-for="(label, index) in visibleLabels"
:key="label.id"
:is-checked="isLabelSelected(label)"
is-check-centered
is-check-item
:active="shouldHighlightFirstItem && index === 0"
active-class="is-focused"
data-testid="labels-list"
@click.native.capture.stop="handleLabelClick(label)"
>
<label-item :label="label" />
</gl-dropdown-item>
<gl-dropdown-item
v-show="showNoMatchingResultsMessage"
class="gl-p-3 gl-text-center"
data-testid="no-results"
>
{{ __('No matching results') }}
</gl-dropdown-item>
</template>
</div>
</gl-dropdown-form>
</gl-intersection-observer>
</template>
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