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<script>
import Draggable from 'vuedraggable';
import { mapActions, mapState } from 'vuex';
import { GlLoadingIcon } from '@gitlab/ui';
import defaultSortableConfig from '~/sortable/sortable_config';
import { sortableStart, sortableEnd } from '~/boards/mixins/sortable_default_options';
import BoardNewIssue from './board_new_issue_new.vue';
import BoardCard from './board_card.vue';
import eventHub from '../eventhub';
import { sprintf, __ } from '~/locale';
export default {
name: 'BoardList',
i18n: {
loadingIssues: __('Loading issues'),
loadingMoreissues: __('Loading more issues'),
showingAllIssues: __('Showing all issues'),
},
components: {
BoardCard,
BoardNewIssue,
GlLoadingIcon,
},
props: {
disabled: {
type: Boolean,
required: true,
},
list: {
type: Object,
required: true,
},
issues: {
type: Array,
required: true,
},
canAdminList: {
type: Boolean,
required: false,
default: false,
},
},
data() {
return {
scrollOffset: 250,
showCount: false,
showIssueForm: false,
};
},
computed: {
...mapState(['pageInfoByListId', 'listsFlags']),
paginatedIssueText() {
return sprintf(__('Showing %{pageSize} of %{total} issues'), {
pageSize: this.issues.length,
total: this.list.issuesCount,
});
},
issuesSizeExceedsMax() {
return this.list.maxIssueCount > 0 && this.list.issuesCount > this.list.maxIssueCount;
},
hasNextPage() {
return this.pageInfoByListId[this.list.id].hasNextPage;
},
loading() {
return this.listsFlags[this.list.id]?.isLoading;
},
loadingMore() {
return this.listsFlags[this.list.id]?.isLoadingMore;
},
listRef() {
// When list is draggable, the reference to the list needs to be accessed differently
return this.canAdminList ? this.$refs.list.$el : this.$refs.list;
},
showingAllIssues() {
return this.issues.length === this.list.issuesCount;
},
treeRootWrapper() {
return this.canAdminList ? Draggable : 'ul';
},
treeRootOptions() {
const options = {
...defaultSortableConfig,
fallbackOnBody: false,
group: 'board-list',
tag: 'ul',
'ghost-class': 'board-card-drag-active',
'data-list-id': this.list.id,
value: this.issues,
};
return this.canAdminList ? options : {};
},
},
watch: {
issues() {
this.$nextTick(() => {
this.showCount = this.scrollHeight() > Math.ceil(this.listHeight());
});
},
},
created() {
eventHub.$on(`toggle-issue-form-${this.list.id}`, this.toggleForm);
eventHub.$on(`scroll-board-list-${this.list.id}`, this.scrollToTop);
},
mounted() {
// Scroll event on list to load more
this.listRef.addEventListener('scroll', this.onScroll);
},
beforeDestroy() {
eventHub.$off(`toggle-issue-form-${this.list.id}`, this.toggleForm);
eventHub.$off(`scroll-board-list-${this.list.id}`, this.scrollToTop);
this.listRef.removeEventListener('scroll', this.onScroll);
},
methods: {
...mapActions(['fetchIssuesForList', 'moveIssue']),
listHeight() {
return this.listRef.getBoundingClientRect().height;
},
scrollHeight() {
return this.listRef.scrollHeight;
},
scrollTop() {
return this.listRef.scrollTop + this.listHeight();
},
scrollToTop() {
this.listRef.scrollTop = 0;
},
loadNextPage() {
this.fetchIssuesForList({ listId: this.list.id, fetchNext: true });
},
toggleForm() {
this.showIssueForm = !this.showIssueForm;
},
onScroll() {
window.requestAnimationFrame(() => {
if (
!this.loadingMore &&
this.scrollTop() > this.scrollHeight() - this.scrollOffset &&
this.hasNextPage
) {
this.loadNextPage();
}
});
},
handleDragOnStart() {
sortableStart();
},
handleDragOnEnd(params) {
sortableEnd();
const { newIndex, oldIndex, from, to, item } = params;
const { issueId, issueIid, issuePath } = item.dataset;
const { children } = to;
let moveBeforeId;
let moveAfterId;
const getIssueId = el => Number(el.dataset.issueId);
// If issue is being moved within the same list
if (from === to) {
if (newIndex > oldIndex && children.length > 1) {
// If issue is being moved down we look for the issue that ends up before
moveBeforeId = getIssueId(children[newIndex]);
} else if (newIndex < oldIndex && children.length > 1) {
// If issue is being moved up we look for the issue that ends up after
moveAfterId = getIssueId(children[newIndex]);
} else {
// If issue remains in the same list at the same position we do nothing
return;
}
} else {
// We look for the issue that ends up before the moved issue if it exists
if (children[newIndex - 1]) {
moveBeforeId = getIssueId(children[newIndex - 1]);
}
// We look for the issue that ends up after the moved issue if it exists
if (children[newIndex]) {
moveAfterId = getIssueId(children[newIndex]);
}
}
this.moveIssue({
issueId,
issueIid,
issuePath,
fromListId: from.dataset.listId,
toListId: to.dataset.listId,
moveBeforeId,
moveAfterId,
});
},
},
};
</script>
<template>
<div
v-show="!list.collapsed"
class="board-list-component gl-relative gl-h-full gl-display-flex gl-flex-direction-column"
data-qa-selector="board_list_cards_area"
>
<div
v-if="loading"
class="gl-mt-4 gl-text-center"
:aria-label="$options.i18n.loadingIssues"
data-testid="board_list_loading"
>
<gl-loading-icon />
</div>
<board-new-issue v-if="list.listType !== 'closed' && showIssueForm" :list="list" />
<component
:is="treeRootWrapper"
v-show="!loading"
ref="list"
v-bind="treeRootOptions"
:data-board="list.id"
:data-board-type="list.listType"
:class="{ 'bg-danger-100': issuesSizeExceedsMax }"
class="board-list gl-w-full gl-h-full gl-list-style-none gl-mb-0 gl-p-2 js-board-list"
data-testid="tree-root-wrapper"
@start="handleDragOnStart"
@end="handleDragOnEnd"
>
<board-card
v-for="(issue, index) in issues"
ref="issue"
:key="issue.id"
:index="index"
:list="list"
:issue="issue"
:disabled="disabled"
/>
<li v-if="showCount" class="board-list-count gl-text-center" data-issue-id="-1">
<gl-loading-icon v-if="loadingMore" :label="$options.i18n.loadingMoreissues" />
<span v-if="showingAllIssues">{{ $options.i18n.showingAllIssues }}</span>
<span v-else>{{ paginatedIssueText }}</span>
</li>
</component>
</div>
</template>
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