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import { mapGetters, mapActions, mapState } from 'vuex';
import { scrollToElement } from '~/lib/utils/common_utils';
import eventHub from '../event_hub';
/**
* @param {string} selector
* @returns {boolean}
*/
function scrollTo(selector) {
const el = document.querySelector(selector);
if (el) {
scrollToElement(el);
return true;
}
return false;
}
/**
* @param {object} self Component instance with mixin applied
* @param {string} id Discussion id we are jumping to
*/
function diffsJump({ expandDiscussion }, id) {
const selector = `ul.notes[data-discussion-id="${id}"]`;
eventHub.$once('scrollToDiscussion', () => scrollTo(selector));
expandDiscussion({ discussionId: id });
}
/**
* @param {object} self Component instance with mixin applied
* @param {string} id Discussion id we are jumping to
* @returns {boolean}
*/
function discussionJump({ expandDiscussion }, id) {
const selector = `div.discussion[data-discussion-id="${id}"]`;
expandDiscussion({ discussionId: id });
return scrollTo(selector);
}
/**
* @param {object} self Component instance with mixin applied
* @param {string} id Discussion id we are jumping to
*/
function switchToDiscussionsTabAndJumpTo(self, id) {
window.mrTabs.eventHub.$once('MergeRequestTabChange', () => {
setTimeout(() => discussionJump(self, id), 0);
});
window.mrTabs.tabShown('show');
}
/**
* @param {object} self Component instance with mixin applied
* @param {object} discussion Discussion we are jumping to
*/
function jumpToDiscussion(self, discussion) {
const { id, diff_discussion: isDiffDiscussion } = discussion;
if (id) {
const activeTab = window.mrTabs.currentAction;
if (activeTab === 'diffs' && isDiffDiscussion) {
diffsJump(self, id);
} else if (activeTab === 'show') {
discussionJump(self, id);
} else {
switchToDiscussionsTabAndJumpTo(self, id);
}
}
}
/**
* @param {object} self Component instance with mixin applied
* @param {function} fn Which function used to get the target discussion's id
* @param {string} [discussionId=this.currentDiscussionId] Current discussion id, will be null if discussions have not been traversed yet
*/
function handleDiscussionJump(self, fn, discussionId = self.currentDiscussionId) {
const isDiffView = window.mrTabs.currentAction === 'diffs';
const targetId = fn(discussionId, isDiffView);
const discussion = self.getDiscussion(targetId);
jumpToDiscussion(self, discussion);
self.setCurrentDiscussionId(targetId);
}
export default {
computed: {
...mapGetters([
'nextUnresolvedDiscussionId',
'previousUnresolvedDiscussionId',
'getDiscussion',
]),
...mapState({
currentDiscussionId: state => state.notes.currentDiscussionId,
}),
},
methods: {
...mapActions(['expandDiscussion', 'setCurrentDiscussionId']),
jumpToNextDiscussion() {
handleDiscussionJump(this, this.nextUnresolvedDiscussionId);
},
jumpToPreviousDiscussion() {
handleDiscussionJump(this, this.previousUnresolvedDiscussionId);
},
/**
* Go to the next discussion from the given discussionId
* @param {String} discussionId The id we are jumping from
*/
jumpToNextRelativeDiscussion(discussionId) {
handleDiscussionJump(this, this.nextUnresolvedDiscussionId, discussionId);
},
},
};
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