githaven/web_src/js/components/DiffCommitSelector.vue
delvh 1f501dae9e
Fix JS NPE when viewing specific range of PR commits (#27912)
This should be the easiest fix.
While other solutions might be possible that exterminate the root cause,
they will not be as trivial.
2023-11-06 02:05:24 +00:00

302 lines
11 KiB
Vue

<script>
import {SvgIcon} from '../svg.js';
import {GET} from '../modules/fetch.js';
export default {
components: {SvgIcon},
data: () => {
const el = document.getElementById('diff-commit-select');
return {
menuVisible: false,
isLoading: false,
locale: {
filter_changes_by_commit: el.getAttribute('data-filter_changes_by_commit'),
},
commits: [],
hoverActivated: false,
lastReviewCommitSha: null
};
},
computed: {
commitsSinceLastReview() {
if (this.lastReviewCommitSha) {
return this.commits.length - this.commits.findIndex((x) => x.id === this.lastReviewCommitSha) - 1;
}
return 0;
},
queryParams() {
return this.$el.parentNode.getAttribute('data-queryparams');
},
issueLink() {
return this.$el.parentNode.getAttribute('data-issuelink');
}
},
mounted() {
document.body.addEventListener('click', this.onBodyClick);
this.$el.addEventListener('keydown', this.onKeyDown);
this.$el.addEventListener('keyup', this.onKeyUp);
},
unmounted() {
document.body.removeEventListener('click', this.onBodyClick);
this.$el.removeEventListener('keydown', this.onKeyDown);
this.$el.removeEventListener('keyup', this.onKeyUp);
},
methods: {
onBodyClick(event) {
// close this menu on click outside of this element when the dropdown is currently visible opened
if (this.$el.contains(event.target)) return;
if (this.menuVisible) {
this.toggleMenu();
}
},
onKeyDown(event) {
if (!this.menuVisible) return;
const item = document.activeElement;
if (!this.$el.contains(item)) return;
switch (event.key) {
case 'ArrowDown': // select next element
event.preventDefault();
this.focusElem(item.nextElementSibling, item);
break;
case 'ArrowUp': // select previous element
event.preventDefault();
this.focusElem(item.previousElementSibling, item);
break;
case 'Escape': // close menu
event.preventDefault();
item.tabIndex = -1;
this.toggleMenu();
break;
}
},
onKeyUp(event) {
if (!this.menuVisible) return;
const item = document.activeElement;
if (!this.$el.contains(item)) return;
if (event.key === 'Shift' && this.hoverActivated) {
// shift is not pressed anymore -> deactivate hovering and reset hovered and selected
this.hoverActivated = false;
for (const commit of this.commits) {
commit.hovered = false;
commit.selected = false;
}
}
},
highlight(commit) {
if (!this.hoverActivated) return;
const indexSelected = this.commits.findIndex((x) => x.selected);
const indexCurrentElem = this.commits.findIndex((x) => x.id === commit.id);
for (const [idx, commit] of this.commits.entries()) {
commit.hovered = Math.min(indexSelected, indexCurrentElem) <= idx && idx <= Math.max(indexSelected, indexCurrentElem);
}
},
/** Focus given element */
focusElem(elem, prevElem) {
if (elem) {
elem.tabIndex = 0;
if (prevElem) prevElem.tabIndex = -1;
elem.focus();
}
},
/** Opens our menu, loads commits before opening */
async toggleMenu() {
this.menuVisible = !this.menuVisible;
// load our commits when the menu is not yet visible (it'll be toggled after loading)
// and we got no commits
if (this.commits.length === 0 && this.menuVisible && !this.isLoading) {
this.isLoading = true;
try {
await this.fetchCommits();
} finally {
this.isLoading = false;
}
}
// set correct tabindex to allow easier navigation
this.$nextTick(() => {
const expandBtn = this.$el.querySelector('#diff-commit-list-expand');
const showAllChanges = this.$el.querySelector('#diff-commit-list-show-all');
if (this.menuVisible) {
this.focusElem(showAllChanges, expandBtn);
} else {
this.focusElem(expandBtn, showAllChanges);
}
});
},
/** Load the commits to show in this dropdown */
async fetchCommits() {
const resp = await GET(`${this.issueLink}/commits/list`);
const results = await resp.json();
this.commits.push(...results.commits.map((x) => {
x.hovered = false;
return x;
}));
this.commits.reverse();
this.lastReviewCommitSha = results.last_review_commit_sha || null;
if (this.lastReviewCommitSha && this.commits.findIndex((x) => x.id === this.lastReviewCommitSha) === -1) {
// the lastReviewCommit is not available (probably due to a force push)
// reset the last review commit sha
this.lastReviewCommitSha = null;
}
Object.assign(this.locale, results.locale);
},
showAllChanges() {
window.location = `${this.issueLink}/files${this.queryParams}`;
},
/** Called when user clicks on since last review */
changesSinceLastReviewClick() {
window.location = `${this.issueLink}/files/${this.lastReviewCommitSha}..${this.commits.at(-1).id}${this.queryParams}`;
},
/** Clicking on a single commit opens this specific commit */
commitClicked(commitId, newWindow = false) {
const url = `${this.issueLink}/commits/${commitId}${this.queryParams}`;
if (newWindow) {
window.open(url);
} else {
window.location = url;
}
},
/**
* When a commit is clicked with shift this enables the range
* selection. Second click (with shift) defines the end of the
* range. This opens the diff of this range
* Exception: first commit is the first commit of this PR. Then
* the diff from beginning of PR up to the second clicked commit is
* opened
*/
commitClickedShift(commit) {
this.hoverActivated = !this.hoverActivated;
commit.selected = true;
// Second click -> determine our range and open links accordingly
if (!this.hoverActivated) {
// find all selected commits and generate a link
if (this.commits[0].selected) {
// first commit is selected - generate a short url with only target sha
const lastCommitIdx = this.commits.findLastIndex((x) => x.selected);
if (lastCommitIdx === this.commits.length - 1) {
// user selected all commits - just show the normal diff page
window.location = `${this.issueLink}/files${this.queryParams}`;
} else {
window.location = `${this.issueLink}/files/${this.commits[lastCommitIdx].id}${this.queryParams}`;
}
} else {
const start = this.commits[this.commits.findIndex((x) => x.selected) - 1].id;
const end = this.commits.findLast((x) => x.selected).id;
window.location = `${this.issueLink}/files/${start}..${end}${this.queryParams}`;
}
}
},
}
};
</script>
<template>
<div class="ui scrolling dropdown custom">
<button
class="ui basic button"
id="diff-commit-list-expand"
@click.stop="toggleMenu()"
:data-tooltip-content="locale.filter_changes_by_commit"
aria-haspopup="true"
aria-controls="diff-commit-selector-menu"
:aria-label="locale.filter_changes_by_commit"
aria-activedescendant="diff-commit-list-show-all"
>
<svg-icon name="octicon-git-commit"/>
</button>
<div class="menu left transition" id="diff-commit-selector-menu" :class="{visible: menuVisible}" v-show="menuVisible" v-cloak :aria-expanded="menuVisible ? 'true': 'false'">
<div class="loading-indicator is-loading" v-if="isLoading"/>
<div v-if="!isLoading" class="vertical item gt-df gt-fc gt-gap-2" id="diff-commit-list-show-all" role="menuitem" @keydown.enter="showAllChanges()" @click="showAllChanges()">
<div class="gt-ellipsis">
{{ locale.show_all_commits }}
</div>
<div class="gt-ellipsis text light-2 gt-mb-0">
{{ locale.stats_num_commits }}
</div>
</div>
<!-- only show the show changes since last review if there is a review AND we are commits ahead of the last review -->
<div
v-if="lastReviewCommitSha != null" role="menuitem"
class="vertical item gt-df gt-fc gt-gap-2 gt-border-secondary-top"
:class="{disabled: commitsSinceLastReview === 0}"
@keydown.enter="changesSinceLastReviewClick()"
@click="changesSinceLastReviewClick()"
>
<div class="gt-ellipsis">
{{ locale.show_changes_since_your_last_review }}
</div>
<div class="gt-ellipsis text light-2">
{{ commitsSinceLastReview }} commits
</div>
</div>
<span v-if="!isLoading" class="info gt-border-secondary-top text light-2">{{ locale.select_commit_hold_shift_for_range }}</span>
<template v-for="commit in commits" :key="commit.id">
<div
class="vertical item gt-df gt-gap-2 gt-border-secondary-top" role="menuitem"
:class="{selection: commit.selected, hovered: commit.hovered}"
@keydown.enter.exact="commitClicked(commit.id)"
@keydown.enter.shift.exact="commitClickedShift(commit)"
@mouseover.shift="highlight(commit)"
@click.exact="commitClicked(commit.id)"
@click.ctrl.exact="commitClicked(commit.id, true)"
@click.meta.exact="commitClicked(commit.id, true)"
@click.shift.exact.stop.prevent="commitClickedShift(commit)"
>
<div class="gt-f1 gt-df gt-fc gt-gap-2">
<div class="gt-ellipsis commit-list-summary">
{{ commit.summary }}
</div>
<div class="gt-ellipsis text light-2">
{{ commit.committer_or_author_name }}
<span class="text right">
<relative-time class="time-since" prefix="" :datetime="commit.time" data-tooltip-content data-tooltip-interactive="true">{{ commit.time }}</relative-time>
</span>
</div>
</div>
<div class="gt-mono">
{{ commit.short_sha }}
</div>
</div>
</template>
</div>
</div>
</template>
<style scoped>
.hovered:not(.selection) {
background-color: var(--color-small-accent) !important;
}
.selection {
background-color: var(--color-accent) !important;
}
.info {
display: inline-block;
padding: 7px 14px !important;
line-height: 1.4;
width: 100%;
}
#diff-commit-selector-menu {
overflow-x: hidden;
max-height: 450px;
}
#diff-commit-selector-menu .loading-indicator {
height: 200px;
width: 350px;
}
#diff-commit-selector-menu .item {
flex-direction: row;
line-height: 1.4;
padding: 7px 14px !important;
}
#diff-commit-selector-menu .item:focus {
color: var(--color-text);
background: var(--color-hover);
}
#diff-commit-selector-menu .commit-list-summary {
max-width: min(380px, 96vw);
}
</style>