feat: depends on search filter (#6713)

* feat: add norisk client source support (#6707)

Signed-off-by: Robin <me@orb1n.dev>

* changelog

* feat: implement depends on search filter

* feat: add modpack "includes content" filter and update depends on

* feat: style pass

* feat: show included modpack projects filter tag better

* pnpm prepr

* feat: polish depends on filter

* fix: clear button, page scroll, and metadata loading state

* feat: hook up excludes modpack

* fix: combobox closing race

* Revert "fix: combobox closing race"

This reverts commit e51529ca65.

* fix scrolling after applying depends on

* feedback

* pnpm prepr

* slightly make buttons larger for touch devices

* feat: add view dependents/view modpacks in project overflow menu

* pnpm prepr

* fix: divider

* add icon

* fix: project search combobox background in app

---------

Signed-off-by: Robin <me@orb1n.dev>
Co-authored-by: Robin <robin.murer11@gmail.com>
Co-authored-by: Prospector <6166773+Prospector@users.noreply.github.com>

apps/frontend/src/locales/en-US/index.json

@@ -3494,6 +3494,15 @@
   "project.actions.servers-promo.title": {
     "message": "Create a server"
   },
+  "project.actions.view-dependents": {
+    "message": "View dependents"
+  },
+  "project.actions.view-modpacks": {
+    "message": "View modpacks"
+  },
+  "project.actions.view-project-type-dependents": {
+    "message": "View {projectType} dependents"
+  },
   "project.ai-image-warning-modal.body.1": {
     "message": "Using AI-generated images to represent your project is not allowed. Attempting to work around detection may lead to your Modrinth account being suspended."
   },

apps/frontend/src/pages/[type]/[project].vue

@@ -564,10 +564,12 @@ import {
 	HeartIcon,
 	LeftArrowIcon,
 	MoreVerticalIcon,
+	PackageSearchIcon,
 	PlayIcon,
 	ReportIcon,
 	ScaleIcon,
 	ScanEyeIcon,
+	SearchIcon,
 	ServerPlusIcon,
 	SettingsIcon,
 	XIcon,
@@ -582,6 +584,8 @@ import {
 	ButtonLink,
 	commonMessages,
 	defineMessages,
+	formatDependencyProjectFilterOption,
+	formatProjectTypeSentence,
 	getActiveDisclosures,
 	IconButton,
 	injectModrinthClient,
@@ -846,6 +850,18 @@ const messages = defineMessages({
 		id: 'project.actions.review-project',
 		defaultMessage: 'Review project',
 	},
+	viewDependents: {
+		id: 'project.actions.view-dependents',
+		defaultMessage: 'View dependents',
+	},
+	viewProjectTypeDependents: {
+		id: 'project.actions.view-project-type-dependents',
+		defaultMessage: 'View {projectType} dependents',
+	},
+	viewModpacks: {
+		id: 'project.actions.view-modpacks',
+		defaultMessage: 'View modpacks',
+	},
 	rescanModpack: {
 		id: 'project.actions.rescan-modpack',
 		defaultMessage: 'Rescan modpack',
@@ -1904,6 +1920,30 @@ async function checkModpackArchives() {
 
 const projectHeaderMoreActions = computed(() => {
 	const isStaff = !!(auth.value.user && tags.value.staffRoles.includes(auth.value.user.role))
+	const projectId = project.value?.id
+	const dependentSearchTypes = getDependentSearchTypes()
+	const dependentSearchActions = dependentSearchTypes
+		.filter((projectType) => projectType !== 'modpack')
+		.map((projectType) => ({
+			id: `view-${projectType}-dependents`,
+			label: formatMessage(
+				dependentSearchTypes.length === 1
+					? messages.viewDependents
+					: messages.viewProjectTypeDependents,
+				{
+					projectType: formatProjectTypeSentence(formatMessage, projectType),
+				},
+			),
+			icon: SearchIcon,
+			type: 'link',
+			to: {
+				path: `/discover/${projectType}s`,
+				query: {
+					dep: formatDependencyProjectFilterOption(projectId, ['required']),
+				},
+			},
+		}))
+	const isPluginOnly = dependentSearchTypes.length === 1 && dependentSearchTypes[0] === 'plugin'
 
 	return [
 		{
@@ -1914,7 +1954,21 @@ const projectHeaderMoreActions = computed(() => {
 			to: `${projectPath.value}/settings/analytics`,
 			shown: !!auth.value.user && !!currentMember.value,
 		},
-		{ type: 'divider', shown: !!auth.value.user && !!currentMember.value },
+		...dependentSearchActions,
+		{
+			id: 'view-modpacks',
+			label: formatMessage(messages.viewModpacks),
+			icon: PackageSearchIcon,
+			type: 'link',
+			to: {
+				path: '/discover/modpacks',
+				query: {
+					dep: formatDependencyProjectFilterOption(projectId, ['required']),
+				},
+			},
+			shown: !isPluginOnly && project.value?.actualProjectType !== 'modpack',
+		},
+		{ type: 'divider' },
 		{
 			id: 'moderation-checklist',
 			label: formatMessage(messages.reviewProject),
@@ -1977,6 +2031,29 @@ const projectHeaderMoreActions = computed(() => {
 	]
 })
 
+function getDependentSearchTypes() {
+	if (!project.value) return []
+
+	if (project.value.actualProjectType !== 'mod') {
+		return [isServerProject.value ? 'server' : project.value.actualProjectType]
+	}
+
+	const loaders = project.value.loaders ?? []
+	const projectTypes = []
+
+	if (loaders.some((loader) => tags.value.loaderData.modLoaders.includes(loader))) {
+		projectTypes.push('mod')
+	}
+	if (loaders.some((loader) => tags.value.loaderData.allPluginLoaders.includes(loader))) {
+		projectTypes.push('plugin')
+	}
+	if (loaders.some((loader) => tags.value.loaderData.dataPackLoaders.includes(loader))) {
+		projectTypes.push('datapack')
+	}
+
+	return projectTypes.length > 0 ? projectTypes : ['mod']
+}
+
 const createCanonicalUrl = () =>
 	project.value ? `https://modrinth.com/project/${project.value.id}` : undefined
 

packages/assets/generated-icons.ts

@@ -213,6 +213,7 @@ import _PackageIcon from './icons/package.svg?component'
 import _PackageClosedIcon from './icons/package-closed.svg?component'
 import _PackageOpenIcon from './icons/package-open.svg?component'
 import _PackagePlusIcon from './icons/package-plus.svg?component'
+import _PackageSearchIcon from './icons/package-search.svg?component'
 import _PageRoundIcon from './icons/page-round.svg?component'
 import _PaintbrushIcon from './icons/paintbrush.svg?component'
 import _PaletteIcon from './icons/palette.svg?component'
@@ -656,6 +657,7 @@ export const PackageIcon = _PackageIcon
 export const PackageClosedIcon = _PackageClosedIcon
 export const PackageOpenIcon = _PackageOpenIcon
 export const PackagePlusIcon = _PackagePlusIcon
+export const PackageSearchIcon = _PackageSearchIcon
 export const PageRoundIcon = _PageRoundIcon
 export const PaintbrushIcon = _PaintbrushIcon
 export const PaletteIcon = _PaletteIcon

packages/assets/icons/package-search.svg

@@ -0,0 +1,20 @@
+<!-- @license lucide-static v0.562.0 - ISC -->
+<svg
+  class="lucide lucide-package-search"
+  xmlns="http://www.w3.org/2000/svg"
+  width="24"
+  height="24"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="2"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+>
+  <path d="M21 10V8a2 2 0 0 0-1-1.73l-7-4a2 2 0 0 0-2 0l-7 4A2 2 0 0 0 3 8v8a2 2 0 0 0 1 1.73l7 4a2 2 0 0 0 2 0l2-1.14" />
+  <path d="m7.5 4.27 9 5.15" />
+  <polyline points="3.29 7 12 12 20.71 7" />
+  <line x1="12" x2="12" y1="22" y2="12" />
+  <circle cx="18.5" cy="15.5" r="2.5" />
+  <path d="M20.27 17.27 22 19" />
+</svg>

packages/ui/src/components/base/Combobox.vue

@@ -1,10 +1,14 @@
 <template>
 	<div ref="containerRef" class="relative inline-block w-full">
 		<!-- Searchable mode: input trigger -->
-		<div v-if="searchable" class="relative w-full rounded-xl bg-surface-4">
+		<div
+			v-if="searchable"
+			class="relative w-full rounded-xl"
+			:class="{ 'bg-surface-4': searchInputVariant === 'surface' }"
+		>
 			<!--
 				Selection mirror: horizontal padding must match StyledInput (filled + left icon uses `pl-10`,
-				else `pl-3`) and `searchableInputClass` when the chevron is shown (`!pr-9`), or the overlay
+				else `pl-3`) and `resolvedSearchInputClass` when the chevron is shown (`!pr-9`), or the overlay
 				text will not line up with the transparent input text / caret.
 			-->
 			<div
@@ -24,6 +28,7 @@
 				:name="searchName"
 				:placeholder="searchPlaceholder || placeholder"
 				:disabled="disabled"
+				:clearable="clearable"
 				:autocomplete="searchAutocomplete"
 				:autocorrect="searchAutocorrect"
 				:autocapitalize="searchAutocapitalize"
@@ -31,13 +36,14 @@
 				:inputmode="searchInputmode"
 				:input-attrs="searchInputAttrs"
 				wrapper-class="w-full !bg-transparent"
-				:input-class="searchableInputClass"
+				:input-class="resolvedSearchInputClass"
 				class="relative z-[1]"
 				@input="handleSearchInput"
 				@keydown="handleSearchKeydown"
 				@focusin="handleSearchFocus"
 				@focusout="handleSearchFocusout"
 				@click="handleSearchClick"
+				@clear="handleSearchClear"
 			>
 				<template v-if="showChevron" #right>
 					<ChevronLeftIcon
@@ -234,6 +240,8 @@ export interface ComboboxOption<T> {
 	searchTerms?: string[]
 }
 
+export type ComboboxSearchInputVariant = 'surface' | 'button'
+
 type OverlayScrollbarsInstance = NonNullable<ReturnType<typeof OverlayScrollbars>>
 type ViewportRect = {
 	width: number
@@ -274,6 +282,7 @@ const props = withDefaults(
 		placeholder?: string
 		disabled?: boolean
 		searchable?: boolean
+		clearable?: boolean
 		searchPlaceholder?: string
 		listbox?: boolean
 		showChevron?: boolean
@@ -311,11 +320,13 @@ const props = withDefaults(
 		searchAutocapitalize?: 'none' | 'off' | 'sentences' | 'words' | 'characters'
 		searchSpellcheck?: boolean
 		searchInputAttrs?: Record<string, string | number | boolean | undefined>
+		searchInputVariant?: ComboboxSearchInputVariant
 	}>(),
 	{
 		placeholder: 'Select an option',
 		disabled: false,
 		searchable: false,
+		clearable: false,
 		searchPlaceholder: 'Search...',
 		listbox: true,
 		showChevron: true,
@@ -327,6 +338,7 @@ const props = withDefaults(
 		selectSearchTextOnFocus: false,
 		showSearchIcon: false,
 		searchType: 'text',
+		searchInputVariant: 'surface',
 		triggerType: 'base',
 		triggerSize: 'md',
 		triggerInteraction: 'surface',
@@ -397,8 +409,8 @@ const searchSelectionOverlayVisible = computed(() => {
 	return true
 })
 
-const searchableInputClass = computed(() => {
-	const parts = ['!bg-transparent']
+const resolvedSearchInputClass = computed(() => {
+	const parts = [props.searchInputVariant === 'button' ? '!bg-button-bg' : '!bg-transparent']
 	if (props.showChevron) parts.push('!pr-9')
 	if (searchSelectionOverlayVisible.value) {
 		parts.push('!text-transparent [caret-color:var(--color-text-primary)] selection:bg-transparent')
@@ -841,6 +853,12 @@ function handleSearchInput() {
 	}
 }
 
+function handleSearchClear() {
+	userHasTyped.value = true
+	emit('searchInput', searchQuery.value)
+	closeDropdown()
+}
+
 function handleSearchFocus(event: FocusEvent) {
 	const target = event.target
 	if (props.selectSearchTextOnFocus && target instanceof HTMLInputElement) {

packages/ui/src/components/base/index.ts

@@ -38,7 +38,7 @@ export { default as Collapsible } from './Collapsible.vue'
 export type { CollapsibleAdmonitionItem } from './CollapsibleAdmonition.vue'
 export { default as CollapsibleAdmonition } from './CollapsibleAdmonition.vue'
 export { default as CollapsibleRegion } from './CollapsibleRegion.vue'
-export type { ComboboxOption } from './Combobox.vue'
+export type { ComboboxOption, ComboboxSearchInputVariant } from './Combobox.vue'
 export { default as Combobox } from './Combobox.vue'
 export { default as CopyCode } from './CopyCode.vue'
 export { default as DatePicker } from './DatePicker.vue'

packages/ui/src/components/project/ProjectCombobox.vue

@@ -8,6 +8,10 @@
 		:no-options-message="searchLoading ? loadingMessage : noResultsMessage"
 		:disable-search-filter="true"
 		:disabled="disabled"
+		:clearable="clearable"
+		:search-input-variant="searchInputVariant"
+		:sync-with-selection="syncWithSelection"
+		:select-search-text-on-focus="selectSearchTextOnFocus"
 		show-icon-in-selected
 		@search-input="(query) => handleSearch(query)"
 	/>
@@ -20,7 +24,7 @@ import Fuse from 'fuse.js'
 import { defineAsyncComponent, h, markRaw, ref, watch } from 'vue'
 
 import { injectModrinthClient, injectNotificationManager } from '../../providers'
-import type { ComboboxOption } from '../base/Combobox.vue'
+import type { ComboboxOption, ComboboxSearchInputVariant } from '../base/Combobox.vue'
 import Combobox from '../base/Combobox.vue'
 
 export type ProjectType =
@@ -32,12 +36,13 @@ export type ProjectType =
 	| 'plugin'
 	| 'server'
 
-interface SearchHit {
+export interface SearchHit {
 	project_id: string
 	title: string
 	icon_url?: string
 	project_type: string
 	slug: string
+	author?: string
 }
 
 const props = withDefaults(
@@ -54,6 +59,14 @@ const props = withDefaults(
 		noResultsMessage?: string
 		/** Whether the combobox is disabled */
 		disabled?: boolean
+		/** Whether to show a button for clearing the search input */
+		clearable?: boolean
+		/** Visual treatment for the search input */
+		searchInputVariant?: ComboboxSearchInputVariant
+		/** Keep the selected project's label in the search input */
+		syncWithSelection?: boolean
+		/** Select all search text when the input receives focus */
+		selectSearchTextOnFocus?: boolean
 		/** Maximum number of results to show */
 		limit?: number
 		/** Project IDs to exclude from results */
@@ -69,6 +82,8 @@ const props = withDefaults(
 		loadingMessage: 'Loading...',
 		noResultsMessage: 'No results found',
 		disabled: false,
+		searchInputVariant: 'surface',
+		syncWithSelection: true,
 		limit: 20,
 	},
 )
@@ -83,6 +98,10 @@ const searchResultsCache = ref<Map<string, SearchHit>>(new Map())
 
 const { labrinth } = injectModrinthClient()
 
+function isAllowedProjectType(projectType: string): boolean {
+	return !props.projectTypes || props.projectTypes.includes(projectType as ProjectType)
+}
+
 const userProjectHits = ref<SearchHit[]>([])
 const userProjectsFuse = ref<Fuse<SearchHit> | null>(null)
 
@@ -163,7 +182,7 @@ watch(
 		} else {
 			try {
 				const project = await labrinth.projects_v2.get(newId)
-				if (project) {
+				if (project && isAllowedProjectType(project.project_type)) {
 					hit = {
 						project_id: project.id,
 						title: project.title,
@@ -178,6 +197,9 @@ watch(
 				return
 			}
 		}
+		if (hit && !isAllowedProjectType(hit.project_type)) {
+			hit = null
+		}
 
 		selectedProject.value = hit
 		if (hit && !options.value.some((o) => o.value === hit!.project_id)) {
@@ -220,7 +242,11 @@ const search = async (query: string) => {
 		const uniqueHits: SearchHit[] = []
 
 		for (const hit of allHits) {
-			if (!seenIds.has(hit.project_id) && !excludeSet.has(hit.project_id)) {
+			if (
+				isAllowedProjectType(hit.project_type) &&
+				!seenIds.has(hit.project_id) &&
+				!excludeSet.has(hit.project_id)
+			) {
 				seenIds.add(hit.project_id)
 				uniqueHits.push(hit)
 				searchResultsCache.value.set(hit.project_id, hit)

packages/ui/src/components/search/SearchDependsOnFilter.vue

@@ -0,0 +1,401 @@
+<template>
+	<div v-if="isModpack" :class="innerPanelClass" class="flex flex-col gap-3">
+		<ProjectCombobox
+			:model-value="pendingProjectId"
+			:project-types="selectableProjectTypes"
+			:exclude-project-ids="dependencyProjectIds"
+			:search-placeholder="formatMessage(messages.searchContentPlaceholder)"
+			:show-chevron="false"
+			:sync-with-selection="false"
+			clearable
+			search-input-variant="button"
+			show-search-icon
+			@update:model-value="addIncludedProject"
+		/>
+		<div v-if="loadedDependentProjects.length > 0" class="flex flex-col gap-1">
+			<div
+				v-for="{ projectId, project } in loadedDependentProjects"
+				:key="projectId"
+				class="group flex min-w-0 items-center gap-2 rounded-xl px-1 pr-0 py-1 text-primary"
+			>
+				<img
+					v-if="project.icon_url"
+					:src="project.icon_url"
+					:alt="project.title"
+					class="size-6 shrink-0 rounded-md object-cover"
+				/>
+				<PackageIcon v-else class="size-8 shrink-0 text-secondary" />
+				<span class="min-w-0 flex-1 truncate font-medium text-contrast">
+					{{ project.title }}
+				</span>
+				<div class="flex items-center gap-0.5">
+					<button
+						v-tooltip="
+							excludedProjectIds.has(projectId)
+								? formatMessage(messages.excluded)
+								: formatMessage(messages.exclude)
+						"
+						type="button"
+						class="flex shrink-0 cursor-pointer items-center justify-center rounded-xl border-0 px-2 py-2 transition-all [@media(hover:hover)]:py-1"
+						:class="
+							excludedProjectIds.has(projectId)
+								? 'text-red opacity-100 bg-highlight-red'
+								: 'text-secondary [@media(hover:hover)]:opacity-0 group-hover:opacity-100 bg-transparent hover:bg-button-bg hover:text-red active:scale-[0.96]'
+						"
+						:aria-label="
+							excludedProjectIds.has(projectId)
+								? formatMessage(messages.excluded)
+								: formatMessage(messages.exclude)
+						"
+						@click="toggleProjectExcluded(projectId)"
+					>
+						<BanIcon class="size-4" aria-hidden="true" />
+					</button>
+					<button
+						v-tooltip="formatMessage(messages.removeIncludedProjectTooltip)"
+						type="button"
+						class="flex shrink-0 cursor-pointer items-center justify-center rounded-xl border-0 bg-transparent px-2 py-2 text-secondary transition-all [@media(hover:hover)]:py-1 [@media(hover:hover)]:opacity-0 group-hover:opacity-100 hover:bg-button-bg hover:text-contrast active:scale-[0.96]"
+						:aria-label="
+							formatMessage(messages.removeIncludedProject, {
+								project: project.title,
+							})
+						"
+						@click="removeIncludedProject(projectId)"
+					>
+						<XIcon class="size-4" aria-hidden="true" />
+					</button>
+				</div>
+			</div>
+		</div>
+	</div>
+	<div v-else :class="innerPanelClass" class="flex flex-col gap-3">
+		<ProjectCombobox
+			v-show="!showSelectedProject"
+			ref="projectCombobox"
+			:model-value="selectedProjectId"
+			:project-types="selectableProjectTypes"
+			:search-placeholder="formatMessage(messages.searchProjectPlaceholder)"
+			:show-chevron="false"
+			clearable
+			search-input-variant="button"
+			select-search-text-on-focus
+			show-search-icon
+			@update:model-value="setSelectedProjectId"
+		/>
+		<template v-if="showSelectedProject">
+			<div
+				class="flex items-center gap-2 rounded-2xl p-2.5"
+				:class="selectedProjectClass ?? 'bg-surface-2'"
+			>
+				<img
+					v-if="selectedProject?.icon_url"
+					:src="selectedProject.icon_url"
+					:alt="selectedProject.title"
+					class="size-12 shrink-0 rounded-xl object-cover"
+				/>
+				<PackageIcon v-else class="size-14 shrink-0 text-secondary" />
+				<div class="min-w-0 flex-1">
+					<div class="truncate text-base font-bold text-contrast">
+						{{ selectedProject?.title ?? selectedProjectId }}
+					</div>
+					<div class="relative right-2.5">
+						<MultiSelect
+							:model-value="draftDependencyTypes"
+							:options="dependencyTypeOptions"
+							:clearable="false"
+							fit-content
+							show-chevron
+							trigger-class="!rounded-none !bg-transparent !p-0"
+							checkbox-position="right"
+							:dropdown-min-width="220"
+							@open="resetDraftDependencyTypes"
+							@close="commitDependencyTypes"
+							@update:model-value="setDraftDependencyTypes"
+						>
+							<template #input-content="{ isOpen }">
+								<span class="flex items-center gap-0.5 text-sm text-secondary ml-2.5">
+									{{ dependencyTypeLabel }}
+									<DropdownIcon
+										class="size-4 transition-transform"
+										:class="{ 'rotate-180': isOpen }"
+									/>
+								</span>
+							</template>
+						</MultiSelect>
+					</div>
+				</div>
+				<IconButton
+					v-tooltip="formatMessage(messages.clearDependencyFilter)"
+					type="quiet"
+					size="sm"
+					class="ml-auto"
+					:label="formatMessage(messages.clearDependencyFilter)"
+					@click="setSelectedProjectId(undefined)"
+				>
+					<XIcon aria-hidden="true" />
+				</IconButton>
+			</div>
+		</template>
+	</div>
+</template>
+
+<script setup lang="ts">
+import { BanIcon, DropdownIcon, PackageIcon, XIcon } from '@modrinth/assets'
+import { useQuery } from '@tanstack/vue-query'
+import { computed, ref, watch } from 'vue'
+
+import { defineMessages, useVIntl } from '../../composables/i18n'
+import { injectModrinthClient } from '../../providers'
+import {
+	type DependencyType,
+	type FilterValue,
+	formatDependencyProjectFilterOption,
+	parseDependencyProjectFilterOption,
+} from '../../utils/search'
+import { IconButton } from '../base/buttons'
+import MultiSelect, { type MultiSelectOption } from '../base/MultiSelect.vue'
+import ProjectCombobox, {
+	type ProjectType as ProjectComboboxProjectType,
+	type SearchHit,
+} from '../project/ProjectCombobox.vue'
+
+const FILTER_TYPE_ID = 'compatible_dependency_project_ids'
+
+const { formatMessage } = useVIntl()
+const { labrinth } = injectModrinthClient()
+
+const selectedFilters = defineModel<FilterValue[]>('selectedFilters', { required: true })
+
+const props = defineProps<{
+	projectType: string
+	innerPanelClass?: string
+	selectedProjectClass?: string
+	resultCount?: number
+	refreshing?: boolean
+}>()
+
+const selectableProjectTypes: ProjectComboboxProjectType[] = [
+	'mod',
+	'resourcepack',
+	'shader',
+	'datapack',
+	'plugin',
+]
+const isModpack = computed(() => props.projectType === 'modpack')
+const dependencyProjectIds = computed(() => [
+	...new Set(
+		selectedFilters.value
+			.filter((filter) => filter.type === FILTER_TYPE_ID)
+			.map((filter) => parseDependencyProjectFilterOption(filter.option).projectId),
+	),
+])
+const pendingProjectId = ref<string>()
+const excludedProjectIds = computed(
+	() =>
+		new Set(
+			selectedFilters.value
+				.filter((filter) => filter.type === FILTER_TYPE_ID && filter.negative)
+				.map((filter) => parseDependencyProjectFilterOption(filter.option).projectId),
+		),
+)
+
+const { data: dependentProjects } = useQuery({
+	queryKey: computed(() => [
+		'search-depends-on-filter',
+		'dependent-projects',
+		dependencyProjectIds.value,
+	]),
+	queryFn: () => labrinth.projects_v2.getMultiple(dependencyProjectIds.value),
+	enabled: computed(() => isModpack.value && dependencyProjectIds.value.length > 0),
+	placeholderData: (previousData) => previousData,
+	refetchOnWindowFocus: false,
+})
+
+const dependentProjectMap = computed(
+	() => new Map(dependentProjects.value?.map((project) => [project.id, project]) ?? []),
+)
+const loadedDependentProjects = computed(() =>
+	dependencyProjectIds.value.flatMap((projectId) => {
+		const project = dependentProjectMap.value.get(projectId)
+		return project ? [{ projectId, project }] : []
+	}),
+)
+const projectCombobox = ref<{ selectedProject: SearchHit | null } | null>(null)
+const selectedProject = computed(() => projectCombobox.value?.selectedProject ?? null)
+const selectedDependencyFilter = computed(() =>
+	selectedFilters.value.find((filter) => filter.type === FILTER_TYPE_ID),
+)
+const selectedProjectId = computed(() =>
+	selectedDependencyFilter.value
+		? parseDependencyProjectFilterOption(selectedDependencyFilter.value.option).projectId
+		: undefined,
+)
+const showSelectedProject = computed(() =>
+	Boolean(selectedProjectId.value && selectedProject.value),
+)
+
+const dependencyTypes = computed<DependencyType[]>(() =>
+	selectedDependencyFilter.value
+		? parseDependencyProjectFilterOption(selectedDependencyFilter.value.option).dependencyTypes
+		: ['required'],
+)
+const draftDependencyTypes = ref<DependencyType[]>([...dependencyTypes.value])
+
+watch(
+	dependencyTypes,
+	(types) => {
+		draftDependencyTypes.value = [...types]
+	},
+	{ immediate: true },
+)
+
+const dependencyTypeOptions = computed<MultiSelectOption<DependencyType>[]>(() => [
+	{ value: 'required', label: formatMessage(messages.required) },
+	{ value: 'optional', label: formatMessage(messages.optional) },
+	{ value: 'embedded', label: formatMessage(messages.embedded) },
+])
+const dependencyTypeLabel = computed(() => {
+	const selectedTypes = new Set(draftDependencyTypes.value)
+	if (selectedTypes.size === dependencyTypeOptions.value.length) {
+		return formatMessage(messages.anyDependencyType)
+	}
+	if (selectedTypes.has('required') && selectedTypes.has('optional')) {
+		return formatMessage(messages.requiredOrOptional)
+	}
+	if (selectedTypes.has('required') && selectedTypes.has('embedded')) {
+		return formatMessage(messages.requiredOrEmbedded)
+	}
+	if (selectedTypes.has('optional') && selectedTypes.has('embedded')) {
+		return formatMessage(messages.optionalOrEmbedded)
+	}
+	return (
+		dependencyTypeOptions.value.find((option) => selectedTypes.has(option.value))?.label ??
+		'Select type'
+	)
+})
+
+function setSelectedProjectId(projectId: string | undefined) {
+	const otherFilters = selectedFilters.value.filter((filter) => filter.type !== FILTER_TYPE_ID)
+	selectedFilters.value = projectId
+		? [
+				...otherFilters,
+				{
+					type: FILTER_TYPE_ID,
+					option: formatDependencyProjectFilterOption(projectId, ['required']),
+				},
+			]
+		: otherFilters
+}
+
+function addIncludedProject(projectId: string | undefined) {
+	if (projectId && !dependencyProjectIds.value.includes(projectId)) {
+		selectedFilters.value = [...selectedFilters.value, { type: FILTER_TYPE_ID, option: projectId }]
+	}
+	pendingProjectId.value = undefined
+}
+
+function removeIncludedProject(projectId: string) {
+	selectedFilters.value = selectedFilters.value.filter(
+		(filter) =>
+			filter.type !== FILTER_TYPE_ID ||
+			parseDependencyProjectFilterOption(filter.option).projectId !== projectId,
+	)
+}
+
+function toggleProjectExcluded(projectId: string) {
+	selectedFilters.value = selectedFilters.value.map((filter) =>
+		filter.type === FILTER_TYPE_ID &&
+		parseDependencyProjectFilterOption(filter.option).projectId === projectId
+			? { ...filter, negative: !filter.negative }
+			: filter,
+	)
+}
+
+function resetDraftDependencyTypes() {
+	draftDependencyTypes.value = [...dependencyTypes.value]
+}
+
+function setDraftDependencyTypes(types: DependencyType[]) {
+	draftDependencyTypes.value = types
+}
+
+function commitDependencyTypes() {
+	const projectId = selectedProjectId.value
+	const types: DependencyType[] =
+		draftDependencyTypes.value.length > 0 ? draftDependencyTypes.value : ['required']
+	draftDependencyTypes.value = types
+	const selectedTypes = new Set(dependencyTypes.value)
+	const changed =
+		types.length !== selectedTypes.size || types.some((type) => !selectedTypes.has(type))
+
+	if (changed && projectId) {
+		selectedFilters.value = selectedFilters.value.map((filter) =>
+			filter.type === FILTER_TYPE_ID
+				? {
+						...filter,
+						option: formatDependencyProjectFilterOption(projectId, types),
+					}
+				: filter,
+		)
+	}
+}
+
+const messages = defineMessages({
+	clearDependencyFilter: {
+		id: 'search.filter.dependent_project.clear',
+		defaultMessage: 'Clear dependency filter',
+	},
+	searchContentPlaceholder: {
+		id: 'search.filter.included_content.search_placeholder',
+		defaultMessage: 'Search content...',
+	},
+	searchProjectPlaceholder: {
+		id: 'search.filter.dependent_project.search_placeholder',
+		defaultMessage: 'Search for a project...',
+	},
+	exclude: {
+		id: 'search.filter.included_content.exclude',
+		defaultMessage: 'Exclude',
+	},
+	excluded: {
+		id: 'search.filter.included_content.excluded',
+		defaultMessage: 'Excluded',
+	},
+	removeIncludedProject: {
+		id: 'search.filter.included_content.remove_project',
+		defaultMessage: 'Remove {project}',
+	},
+	removeIncludedProjectTooltip: {
+		id: 'search.filter.included_content.remove_project.tooltip',
+		defaultMessage: 'Remove project',
+	},
+	required: {
+		id: 'search.filter.dependency_type.required',
+		defaultMessage: 'Required',
+	},
+	optional: {
+		id: 'search.filter.dependency_type.optional',
+		defaultMessage: 'Optional',
+	},
+	embedded: {
+		id: 'search.filter.dependency_type.embedded',
+		defaultMessage: 'Embedded',
+	},
+	anyDependencyType: {
+		id: 'search.filter.dependency_type.any',
+		defaultMessage: 'Any dependency type',
+	},
+	requiredOrOptional: {
+		id: 'search.filter.dependency_type.required_or_optional',
+		defaultMessage: 'Required or optional',
+	},
+	requiredOrEmbedded: {
+		id: 'search.filter.dependency_type.required_or_embedded',
+		defaultMessage: 'Required or embedded',
+	},
+	optionalOrEmbedded: {
+		id: 'search.filter.dependency_type.optional_or_embedded',
+		defaultMessage: 'Optional or embedded',
+	},
+})
+</script>

packages/ui/src/components/search/SearchFilterControl.vue

@@ -1,15 +1,32 @@
 <template>
 	<div class="flex flex-wrap items-center gap-1 empty:hidden">
 		<TagItem
-			v-if="selectedItems.length > 1"
+			v-if="selectedTagCount > 1"
 			class="transition-transform active:scale-[0.95]"
 			:action="clearFilters"
 		>
 			<XCircleIcon />
 			Clear all filters
 		</TagItem>
+		<TagItem v-if="selectedIncludedProjectItems.length > 0" :action="removeIncludedProjectFilters">
+			<XIcon />
+			{{
+				formatMessage(includedProjectsMessage, {
+					projects: formatProjectNames(selectedIncludedProjectItems),
+				})
+			}}
+		</TagItem>
+		<TagItem v-if="selectedExcludedProjectItems.length > 0" :action="removeExcludedProjectFilters">
+			<XIcon />
+			<BanIcon class="text-brand-red" />
+			{{
+				formatMessage(excludedProjectsMessage, {
+					projects: formatProjectNames(selectedExcludedProjectItems),
+				})
+			}}
+		</TagItem>
 		<TagItem
-			v-for="selectedItem in selectedItems"
+			v-for="selectedItem in otherSelectedItems"
 			:key="`remove-filter-${selectedItem.type}-${selectedItem.option}`"
 			:action="() => removeFilter(selectedItem)"
 		>
@@ -37,23 +54,28 @@
 
 <script setup lang="ts">
 import { BanIcon, LockIcon, XCircleIcon, XIcon } from '@modrinth/assets'
+import { useQuery } from '@tanstack/vue-query'
 import { computed, type ComputedRef } from 'vue'
 
 import { defineMessage, type MessageDescriptor, useVIntl } from '../../composables/i18n'
+import { injectModrinthClient } from '../../providers'
 import {
 	type FilterOption,
 	type FilterType,
 	type FilterValue,
 	flattenFilterOptions,
+	parseDependencyProjectFilterOption,
 } from '../../utils/search'
 import TagItem from '../base/TagItem.vue'
 
 const { formatMessage } = useVIntl()
+const { labrinth } = injectModrinthClient()
 
 const selectedFilters = defineModel<FilterValue[]>('selectedFilters', { required: true })
 
 const props = defineProps<{
 	filters: FilterType[]
+	projectType: string
 	providedFilters: FilterValue[]
 	overriddenProvidedFilterTypes: string[]
 	providedMessage?: MessageDescriptor | string
@@ -63,6 +85,18 @@ const defaultProvidedMessage = defineMessage({
 	id: 'search.filter.locked.default',
 	defaultMessage: 'Filter locked',
 })
+const dependentProjectMessage = defineMessage({
+	id: 'search.filter.dependent_project',
+	defaultMessage: 'Depends on: {project}',
+})
+const includedProjectsMessage = defineMessage({
+	id: 'search.filter.included_projects',
+	defaultMessage: 'Includes: {projects}',
+})
+const excludedProjectsMessage = defineMessage({
+	id: 'search.filter.excluded_projects',
+	defaultMessage: 'Excludes: {projects}',
+})
 
 type Item = {
 	type: string
@@ -72,13 +106,39 @@ type Item = {
 	provided: boolean
 }
 
+const dependentProjectIds = computed(() =>
+	[
+		...new Set(
+			[...selectedFilters.value, ...props.providedFilters]
+				.filter((filter) => filter.type === 'compatible_dependency_project_ids')
+				.map((filter) => parseDependencyProjectFilterOption(filter.option).projectId),
+		),
+	].sort(),
+)
+
+const { data: dependentProjects } = useQuery({
+	queryKey: computed(() => [
+		'search-filter-control',
+		'dependent-projects',
+		dependentProjectIds.value,
+	]),
+	queryFn: () => labrinth.projects_v2.getMultiple(dependentProjectIds.value),
+	enabled: computed(() => dependentProjectIds.value.length > 0),
+	placeholderData: [],
+	refetchOnWindowFocus: false,
+})
+
+const dependentProjectNames = computed(
+	() => new Map(dependentProjects.value?.map((project) => [project.id, project.title]) ?? []),
+)
+
 function filterMatches(type: FilterType, option: FilterOption, list: FilterValue[]) {
 	return list.some((provided) => provided.type === type.id && provided.option === option.id)
 }
 
 const items: ComputedRef<Item[]> = computed(() => {
-	return props.filters.flatMap((type) =>
-		flattenFilterOptions(type.options)
+	return props.filters.flatMap((type) => {
+		const optionItems = flattenFilterOptions(type.options)
 			.filter(
 				(option) =>
 					filterMatches(type, option, selectedFilters.value) ||
@@ -91,11 +151,70 @@ const items: ComputedRef<Item[]> = computed(() => {
 					?.negative,
 				provided: filterMatches(type, option, props.providedFilters),
 				formatted_name: option.formatted_name,
-			})),
-	)
+			}))
+
+		if (type.id !== 'compatible_dependency_project_ids') {
+			return optionItems
+		}
+
+		const customValues = [...selectedFilters.value, ...props.providedFilters].filter(
+			(filter) => filter.type === type.id,
+		)
+		return [
+			...optionItems,
+			...customValues.map((filter) => {
+				const projectId = parseDependencyProjectFilterOption(filter.option).projectId
+				return {
+					type: type.id,
+					option: filter.option,
+					negative: filter.negative,
+					provided: props.providedFilters.some(
+						(provided) => provided.type === type.id && provided.option === filter.option,
+					),
+					formatted_name: formatMessage(dependentProjectMessage, {
+						project: dependentProjectNames.value.get(projectId) ?? projectId,
+					}),
+				}
+			}),
+		]
+	})
 })
 
 const selectedItems = computed(() => items.value.filter((x) => !x.provided))
+const selectedIncludedProjectItems = computed(() =>
+	props.projectType === 'modpack'
+		? selectedItems.value.filter(
+				(item) => item.type === 'compatible_dependency_project_ids' && !item.negative,
+			)
+		: [],
+)
+const selectedExcludedProjectItems = computed(() =>
+	props.projectType === 'modpack'
+		? selectedItems.value.filter(
+				(item) => item.type === 'compatible_dependency_project_ids' && item.negative,
+			)
+		: [],
+)
+const otherSelectedItems = computed(() =>
+	props.projectType === 'modpack'
+		? selectedItems.value.filter((item) => item.type !== 'compatible_dependency_project_ids')
+		: selectedItems.value,
+)
+const selectedTagCount = computed(
+	() =>
+		otherSelectedItems.value.length +
+		(selectedIncludedProjectItems.value.length > 0 ? 1 : 0) +
+		(selectedExcludedProjectItems.value.length > 0 ? 1 : 0),
+)
+
+function formatProjectNames(items: Item[]) {
+	return items
+		.map((item) => {
+			const projectId = parseDependencyProjectFilterOption(item.option).projectId
+			return dependentProjectNames.value.get(projectId) ?? projectId
+		})
+		.join(', ')
+}
 
 function removeFilter(filter: Item) {
 	selectedFilters.value = selectedFilters.value.filter(
@@ -103,6 +222,18 @@ function removeFilter(filter: Item) {
 	)
 }
 
+function removeIncludedProjectFilters() {
+	selectedFilters.value = selectedFilters.value.filter(
+		(filter) => filter.type !== 'compatible_dependency_project_ids' || filter.negative,
+	)
+}
+
+function removeExcludedProjectFilters() {
+	selectedFilters.value = selectedFilters.value.filter(
+		(filter) => filter.type !== 'compatible_dependency_project_ids' || !filter.negative,
+	)
+}
+
 async function clearFilters() {
 	selectedFilters.value = []
 }

packages/ui/src/components/search/SearchSidebarFilter.vue

@@ -69,107 +69,120 @@
 		</template>
 		<template v-else #default>
 			<slot name="prefix" />
-			<StyledInput
-				v-if="filterType.searchable"
-				:id="`search-${filterType.id}`"
-				v-model="query"
-				:icon="SearchIcon"
-				type="text"
-				:placeholder="formatMessage(messages.searchPlaceholder)"
-				autocomplete="off"
-				clearable
-				size="small"
-				input-class="!bg-button-bg"
-				wrapper-class="mx-2 my-1 w-[calc(100%-1rem)]"
+			<SearchDependsOnFilter
+				v-if="filterType.display === 'depends-on-project'"
+				v-model:selected-filters="selectedFilters"
+				:project-type="projectType"
+				:inner-panel-class="innerPanelClass"
+				:selected-project-class="selectedProjectClass"
+				:result-count="resultCount"
+				:loading="loading"
+				:refreshing="refreshing"
 			/>
-			<ScrollablePanel :class="{ 'h-[16rem]': scrollable }" :disable-scrolling="!scrollable">
-				<div :class="innerPanelClass ? innerPanelClass : ''" class="flex flex-col gap-1">
-					<template v-if="groupedOptions">
-						<SearchFilterGroup
-							v-for="[groupName, options] in groupedOptions"
-							:key="`${filterType.id}-group-${groupName}`"
-							:group-name="groupName"
-							:options="options"
-							:supports="filterType.supports"
-							:included="isIncluded"
-							:excluded="isExcluded"
-							@toggle="toggleFilter"
-							@toggle-exclude="toggleNegativeFilter"
-						/>
-					</template>
-					<template v-else>
-						<template v-for="option in visibleOptions" :key="`${filterType.id}-${option.id}`">
-							<SearchFilterOption
-								:option="option"
-								:included="isIncluded(option)"
-								:excluded="isExcluded(option)"
+			<template v-if="filterType.display !== 'depends-on-project'">
+				<StyledInput
+					v-if="filterType.searchable"
+					:id="`search-${filterType.id}`"
+					v-model="query"
+					:icon="SearchIcon"
+					type="text"
+					:placeholder="formatMessage(messages.searchPlaceholder)"
+					autocomplete="off"
+					clearable
+					input-class="!bg-button-bg"
+					wrapper-class="mx-2 my-1 w-[calc(100%-1rem)]"
+				/>
+				<ScrollablePanel :class="{ 'h-[16rem]': scrollable }" :disable-scrolling="!scrollable">
+					<div :class="innerPanelClass ? innerPanelClass : ''" class="flex flex-col gap-1">
+						<template v-if="groupedOptions">
+							<SearchFilterGroup
+								v-for="[groupName, options] in groupedOptions"
+								:key="`${filterType.id}-group-${groupName}`"
+								:group-name="groupName"
+								:options="options"
 								:supports="filterType.supports"
-								:has-sub-options="!!option.sub_options?.length"
-								:expanded="isExpanded(option)"
-								:class="{
-									'mr-3': scrollable,
-								}"
+								:included="isIncluded"
+								:excluded="isExcluded"
 								@toggle="toggleFilter"
 								@toggle-exclude="toggleNegativeFilter"
-								@toggle-expand="toggleExpand(option)"
-							>
-								<slot name="option" :filter="filterType" :option="option">
-									<span
-										v-if="option.icon"
-										class="inline-flex items-center justify-center shrink-0 h-4 w-4"
-										:style="iconStyle(option)"
-									>
-										<div
-											v-if="typeof option.icon === 'string'"
-											class="h-4 w-4"
-											v-html="option.icon"
-										/>
-										<component :is="option.icon" v-else class="h-4 w-4" />
-									</span>
-									<span class="truncate text-sm" :style="iconStyle(option)">
-										{{ option.formatted_name ?? option.id }}
-									</span>
-								</slot>
-							</SearchFilterOption>
-							<div
-								v-if="option.sub_options?.length && isExpanded(option)"
-								class="ml-4 flex flex-col gap-1"
-								:class="{ 'mr-3': scrollable }"
-							>
+							/>
+						</template>
+						<template v-else>
+							<template v-for="option in visibleOptions" :key="`${filterType.id}-${option.id}`">
 								<SearchFilterOption
-									v-for="subOption in option.sub_options"
-									:key="`${filterType.id}-${subOption.id}`"
-									:option="subOption"
-									:included="isIncluded(subOption)"
-									:excluded="isExcluded(subOption)"
+									:option="option"
+									:included="isIncluded(option)"
+									:excluded="isExcluded(option)"
 									:supports="filterType.supports"
+									:has-sub-options="!!option.sub_options?.length"
+									:expanded="isExpanded(option)"
+									:class="{
+										'mr-3': scrollable,
+									}"
 									@toggle="toggleFilter"
 									@toggle-exclude="toggleNegativeFilter"
+									@toggle-expand="toggleExpand(option)"
 								>
-									<slot name="option" :filter="filterType" :option="subOption">
-										<span class="truncate text-sm">
-											{{ subOption.formatted_name ?? subOption.id }}
+									<slot name="option" :filter="filterType" :option="option">
+										<span
+											v-if="option.icon"
+											class="inline-flex items-center justify-center shrink-0 h-4 w-4"
+											:style="iconStyle(option)"
+										>
+											<div
+												v-if="typeof option.icon === 'string'"
+												class="h-4 w-4"
+												v-html="option.icon"
+											/>
+											<component :is="option.icon" v-else class="h-4 w-4" />
+										</span>
+										<span class="truncate text-sm" :style="iconStyle(option)">
+											{{ option.formatted_name ?? option.id }}
 										</span>
 									</slot>
 								</SearchFilterOption>
-							</div>
+								<div
+									v-if="option.sub_options?.length && isExpanded(option)"
+									class="ml-4 flex flex-col gap-1"
+									:class="{ 'mr-3': scrollable }"
+								>
+									<SearchFilterOption
+										v-for="subOption in option.sub_options"
+										:key="`${filterType.id}-${subOption.id}`"
+										:option="subOption"
+										:included="isIncluded(subOption)"
+										:excluded="isExcluded(subOption)"
+										:supports="filterType.supports"
+										@toggle="toggleFilter"
+										@toggle-exclude="toggleNegativeFilter"
+									>
+										<slot name="option" :filter="filterType" :option="subOption">
+											<span class="truncate text-sm">
+												{{ subOption.formatted_name ?? subOption.id }}
+											</span>
+										</slot>
+									</SearchFilterOption>
+								</div>
+							</template>
 						</template>
-					</template>
-					<button
-						v-if="filterType.display === 'expandable'"
-						class="flex bg-transparent text-secondary border-none cursor-pointer !w-full items-center gap-2 truncate rounded-xl px-2 py-1 text-sm font-semibold transition-all hover:text-contrast focus-visible:text-contrast active:scale-[0.98]"
-						@click="showMore = !showMore"
-					>
-						<DropdownIcon
-							class="h-4 w-4 transition-transform"
-							:class="{ 'rotate-180': showMore }"
-						/>
-						<span class="truncate text-sm">
-							{{ showMore ? formatMessage(messages.showFewer) : formatMessage(messages.showMore) }}
-						</span>
-					</button>
-				</div>
-			</ScrollablePanel>
+						<button
+							v-if="filterType.display === 'expandable'"
+							class="flex bg-transparent text-secondary border-none cursor-pointer !w-full items-center gap-2 truncate rounded-xl px-2 py-1 text-sm font-semibold transition-all hover:text-contrast focus-visible:text-contrast active:scale-[0.98]"
+							@click="showMore = !showMore"
+						>
+							<DropdownIcon
+								class="h-4 w-4 transition-transform"
+								:class="{ 'rotate-180': showMore }"
+							/>
+							<span class="truncate text-sm">
+								{{
+									showMore ? formatMessage(messages.showFewer) : formatMessage(messages.showMore)
+								}}
+							</span>
+						</button>
+					</div>
+				</ScrollablePanel>
+			</template>
 			<div :class="innerPanelClass ? innerPanelClass : ''" class="empty:hidden">
 				<Checkbox
 					v-for="group in filterType.toggle_groups"
@@ -219,6 +232,7 @@ import {
 } from '../../utils/search'
 import Accordion from '../base/Accordion.vue'
 import { Checkbox, ScrollablePanel, StyledInput } from '../index'
+import SearchDependsOnFilter from './SearchDependsOnFilter.vue'
 import SearchFilterGroup from './SearchFilterGroup.vue'
 import SearchFilterOption from './SearchFilterOption.vue'
 
@@ -233,11 +247,16 @@ const overriddenProvidedFilterTypes = defineModel<string[]>('overriddenProvidedF
 
 const props = defineProps<{
 	filterType: FilterType
+	projectType: string
 	buttonClass?: string
 	contentClass?: string
 	innerPanelClass?: string
+	selectedProjectClass?: string
 	openByDefault?: boolean
 	providedFilters: FilterValue[]
+	resultCount?: number
+	loading?: boolean
+	refreshing?: boolean
 }>()
 
 defineOptions({

packages/ui/src/layouts/shared/browse-tab/composables/use-browse-search.ts

@@ -58,6 +58,7 @@ export interface BrowseSearchState {
 	effectiveCurrentSortType: Ref<SortType>
 
 	loading: Ref<boolean>
+	refreshing: Ref<boolean>
 	projectHits: ShallowRef<BrowseSearchResponse['projectHits']>
 	serverHits: ShallowRef<BrowseSearchResponse['serverHits']>
 	totalHits: Ref<number>
@@ -186,6 +187,7 @@ export function useBrowseSearch(options: UseBrowseSearchOptions): BrowseSearchSt
 	])
 
 	const loading = ref(true)
+	const refreshing = ref(false)
 	const projectHits = shallowRef<BrowseSearchResponse['projectHits']>([])
 	const serverHits = shallowRef<BrowseSearchResponse['serverHits']>([])
 	const totalHits = ref(0)
@@ -297,6 +299,7 @@ export function useBrowseSearch(options: UseBrowseSearchOptions): BrowseSearchSt
 	)
 
 	watch(effectiveRequestParams, (newVal, oldVal) => {
+		refreshing.value = true
 		debug('effectiveRequestParams changed', {
 			from: oldVal?.substring(0, 80),
 			to: newVal?.substring(0, 80),
@@ -323,6 +326,7 @@ export function useBrowseSearch(options: UseBrowseSearchOptions): BrowseSearchSt
 		}
 
 		const version = ++searchVersion
+		refreshing.value = true
 		debug('refreshSearch start', {
 			version,
 			projectType: options.projectType.value,
@@ -363,11 +367,13 @@ export function useBrowseSearch(options: UseBrowseSearchOptions): BrowseSearchSt
 
 			updateUrlParams()
 			loading.value = false
+			refreshing.value = false
 		} catch (err) {
 			debug('refreshSearch error', err)
 			console.error('Browse search error:', err)
 			if (version === searchVersion) {
 				loading.value = false
+				refreshing.value = false
 			}
 		}
 	}
@@ -441,6 +447,7 @@ export function useBrowseSearch(options: UseBrowseSearchOptions): BrowseSearchSt
 		effectiveSortTypes,
 		effectiveCurrentSortType,
 		loading,
+		refreshing,
 		projectHits,
 		serverHits,
 		totalHits,

packages/ui/src/layouts/shared/browse-tab/layout.vue

@@ -237,6 +237,7 @@ function getProjectCardTags(result: Labrinth.Search.v3.ResultSearchProject, disp
 		v-if="ctx.isServerType.value"
 		v-model:selected-filters="ctx.serverCurrentFilters.value"
 		:filters="ctx.serverFilterTypes.value"
+		:project-type="ctx.projectType.value"
 		:provided-filters="[]"
 		:overridden-provided-filter-types="[]"
 	/>
@@ -248,12 +249,13 @@ function getProjectCardTags(result: Labrinth.Search.v3.ResultSearchProject, disp
 				(f) => f.display !== 'none' && !(ctx.hiddenFilterTypes?.value ?? []).includes(f.id),
 			)
 		"
+		:project-type="ctx.projectType.value"
 		:provided-filters="ctx.providedFilters?.value ?? []"
 		:overridden-provided-filter-types="ctx.overriddenProvidedFilterTypes.value"
 		:provided-message="lockedMessages?.providedBy"
 	/>
 
-	<div class="search">
+	<div class="search [overflow-anchor:none]">
 		<section v-if="ctx.loading.value" class="offline">
 			<component :is="ctx.loadingComponent ?? LoadingIndicator" />
 		</section>

packages/ui/src/layouts/shared/browse-tab/providers/browse-manager.ts

@@ -31,6 +31,7 @@ export interface BrowseManagerContext {
 	effectiveSortTypes: ComputedRef<readonly SortType[]>
 	effectiveCurrentSortType: Ref<SortType>
 	loading: Ref<boolean>
+	refreshing: Ref<boolean>
 	projectHits: ShallowRef<BrowseSearchResponse['projectHits']>
 	serverHits: ShallowRef<BrowseSearchResponse['serverHits']>
 	totalHits: Ref<number>

packages/ui/src/layouts/shared/browse-tab/sidebar.vue

@@ -92,6 +92,9 @@ const buttonClass = computed(() => {
 
 const contentClass = computed(() => (isApp.value ? 'mt-2 mb-3' : 'mb-4 mx-3'))
 const innerPanelClass = computed(() => (isApp.value ? 'ml-2 mr-3' : 'p-1'))
+const selectedProjectClass = computed(() =>
+	isApp.value ? 'bg-surface-1 border border-solid border-surface-3' : 'bg-surface-2',
+)
 
 function hasProvidedFilter(filterId: string): boolean {
 	return (ctx.providedFilters?.value ?? []).some((filter) => filter.type === filterId)
@@ -104,6 +107,9 @@ function getFilterOpenByDefault(filterId: string): boolean {
 	if (hasProvidedFilter(filterId)) {
 		return true
 	}
+	if (filterId === 'compatible_dependency_project_ids') {
+		return true
+	}
 	if (ctx.isServerType.value) {
 		return ![
 			'server_category_minecraft_server_meta',
@@ -214,10 +220,12 @@ function getFilterOpenByDefault(filterId: string): boolean {
 				v-model:toggled-groups="ctx.serverToggledGroups.value"
 				:provided-filters="[]"
 				:filter-type="filterType"
+				:project-type="ctx.projectType.value"
 				:class="filterClass"
 				:button-class="buttonClass"
 				:content-class="contentClass"
 				:inner-panel-class="innerPanelClass"
+				:selected-project-class="selectedProjectClass"
 				:open-by-default="getFilterOpenByDefault(filterType.id)"
 				@on-open="() => filterType.id === 'advanced' && setAdvancedFiltersCollapsed(false)"
 				@on-close="() => filterType.id === 'advanced' && setAdvancedFiltersCollapsed(true)"
@@ -243,10 +251,15 @@ function getFilterOpenByDefault(filterId: string): boolean {
 				v-model:overridden-provided-filter-types="ctx.overriddenProvidedFilterTypes.value"
 				:provided-filters="ctx.providedFilters?.value ?? []"
 				:filter-type="filter"
+				:project-type="ctx.projectType.value"
+				:result-count="ctx.totalHits.value"
+				:loading="ctx.loading.value"
+				:refreshing="ctx.refreshing.value"
 				:class="filterClass"
 				:button-class="buttonClass"
 				:content-class="contentClass"
 				:inner-panel-class="innerPanelClass"
+				:selected-project-class="selectedProjectClass"
 				:open-by-default="getFilterOpenByDefault(filter.id)"
 				@on-open="() => filter.id === 'advanced' && setAdvancedFiltersCollapsed(false)"
 				@on-close="() => filter.id === 'advanced' && setAdvancedFiltersCollapsed(true)"

packages/ui/src/locales/en-US/index.json

@@ -4106,6 +4106,57 @@
   "s.bg": {
     "defaultMessage": "Background task running"
   },
+  "search.filter.dependency_type.any": {
+    "defaultMessage": "Any dependency type"
+  },
+  "search.filter.dependency_type.embedded": {
+    "defaultMessage": "Embedded"
+  },
+  "search.filter.dependency_type.optional": {
+    "defaultMessage": "Optional"
+  },
+  "search.filter.dependency_type.optional_or_embedded": {
+    "defaultMessage": "Optional or embedded"
+  },
+  "search.filter.dependency_type.required": {
+    "defaultMessage": "Required"
+  },
+  "search.filter.dependency_type.required_or_embedded": {
+    "defaultMessage": "Required or embedded"
+  },
+  "search.filter.dependency_type.required_or_optional": {
+    "defaultMessage": "Required or optional"
+  },
+  "search.filter.dependent_project": {
+    "defaultMessage": "Depends on: {project}"
+  },
+  "search.filter.dependent_project.clear": {
+    "defaultMessage": "Clear dependency filter"
+  },
+  "search.filter.dependent_project.search_placeholder": {
+    "defaultMessage": "Search for a project..."
+  },
+  "search.filter.excluded_projects": {
+    "defaultMessage": "Excludes: {projects}"
+  },
+  "search.filter.included_content.exclude": {
+    "defaultMessage": "Exclude"
+  },
+  "search.filter.included_content.excluded": {
+    "defaultMessage": "Excluded"
+  },
+  "search.filter.included_content.remove_project": {
+    "defaultMessage": "Remove {project}"
+  },
+  "search.filter.included_content.remove_project.tooltip": {
+    "defaultMessage": "Remove project"
+  },
+  "search.filter.included_content.search_placeholder": {
+    "defaultMessage": "Search content..."
+  },
+  "search.filter.included_projects": {
+    "defaultMessage": "Includes: {projects}"
+  },
   "search.filter.locked.default": {
     "defaultMessage": "Filter locked"
   },
@@ -4172,6 +4223,9 @@
   "search.filter_type.advanced.disclosure.telemetry": {
     "defaultMessage": "Telemetry"
   },
+  "search.filter_type.compatible_dependency_project_ids": {
+    "defaultMessage": "Depends on"
+  },
   "search.filter_type.environment": {
     "defaultMessage": "Environment"
   },
@@ -4187,6 +4241,9 @@
   "search.filter_type.game_version.all_versions": {
     "defaultMessage": "Show all versions"
   },
+  "search.filter_type.included_content": {
+    "defaultMessage": "Included content"
+  },
   "search.filter_type.license": {
     "defaultMessage": "License"
   },

packages/ui/src/stories/base/Combobox.stories.ts

@@ -58,6 +58,19 @@ export const Searchable: Story = {
 	},
 }
 
+export const SearchableButtonVariant: Story = {
+	args: {
+		options: [
+			{ value: '1', label: 'Minecraft' },
+			{ value: '2', label: 'Fabric' },
+			{ value: '3', label: 'Forge' },
+		],
+		searchable: true,
+		searchInputVariant: 'button',
+		searchPlaceholder: 'Search projects...',
+	},
+}
+
 export const SearchableEmpty: Story = {
 	args: {
 		options: [],

packages/ui/src/utils/search.ts

@@ -105,10 +105,11 @@ export type FilterType = {
 	}[]
 	searchable: boolean
 	allows_custom_options?: 'and' | 'or'
+	custom_option_field?: string
 	ordering?: number
 } & (
 	| {
-			display: 'all' | 'scrollable' | 'none'
+			display: 'all' | 'scrollable' | 'none' | 'depends-on-project'
 	  }
 	| {
 			display: 'expandable'
@@ -122,6 +123,45 @@ export type FilterValue = {
 	negative?: boolean
 }
 
+export type DependencyType = 'required' | 'optional' | 'embedded'
+
+const DEPENDENCY_TYPE_FIELDS: Record<DependencyType, string> = {
+	required: 'required_dependency_project_ids',
+	optional: 'optional_dependency_project_ids',
+	embedded: 'embedded_dependency_project_ids',
+}
+
+const DEPENDENCY_TYPES = Object.keys(DEPENDENCY_TYPE_FIELDS) as DependencyType[]
+
+export function formatDependencyProjectFilterOption(
+	projectId: string,
+	dependencyTypes: readonly DependencyType[],
+): string {
+	return `${dependencyTypes.join(',')}:${projectId}`
+}
+
+export function parseDependencyProjectFilterOption(option: string): {
+	projectId: string
+	dependencyTypes: DependencyType[]
+} {
+	const separatorIndex = option.indexOf(':')
+	if (separatorIndex === -1) {
+		return { projectId: option, dependencyTypes: ['required'] }
+	}
+
+	const dependencyTypes = option
+		.slice(0, separatorIndex)
+		.split(',')
+		.filter((type): type is DependencyType => DEPENDENCY_TYPES.includes(type as DependencyType))
+	const projectId = option.slice(separatorIndex + 1)
+
+	if (dependencyTypes.length === 0 || !projectId) {
+		return { projectId: option, dependencyTypes: ['required'] }
+	}
+
+	return { projectId, dependencyTypes }
+}
+
 export type EnvironmentSearchOverride =
 	| { mode: 'include'; values: string[] }
 	| { mode: 'exclude'; values: string[] }
@@ -353,6 +393,14 @@ export function useSearch(
 	const overriddenProvidedFilterTypes = ref<string[]>([])
 
 	const { formatMessage, locale } = useVIntl()
+	const dependsOnFilterName = defineMessage({
+		id: 'search.filter_type.compatible_dependency_project_ids',
+		defaultMessage: 'Depends on',
+	})
+	const includedContentFilterName = defineMessage({
+		id: 'search.filter_type.included_content',
+		defaultMessage: 'Included content',
+	})
 	const formatCategoryName = (categoryName: string) => {
 		return formatCategory(formatMessage, categoryName)
 	}
@@ -396,6 +444,21 @@ export function useSearch(
 
 		const filterTypes: FilterType[] = [
 			...Object.values(categoryFilters),
+			{
+				id: 'compatible_dependency_project_ids',
+				formatted_name: formatMessage(
+					projectTypes.value.includes('modpack') ? includedContentFilterName : dependsOnFilterName,
+				),
+				supported_project_types: ALL_PROJECT_TYPES,
+				query_param: 'dep',
+				supports: ['include'],
+				display: 'depends-on-project',
+				searchable: false,
+				options: [],
+				allows_custom_options: 'and',
+				custom_option_field: 'compatible_dependency_project_ids',
+				ordering: projectTypes.value.includes('modpack') ? undefined : -999,
+			},
 			{
 				id: 'environment',
 				formatted_name: formatMessage(
@@ -704,6 +767,26 @@ export function useSearch(
 		const negativeByType: Record<string, string[]> = {}
 
 		for (const filterValue of filterValues) {
+			if (filterValue.type === 'compatible_dependency_project_ids') {
+				const { projectId, dependencyTypes } = parseDependencyProjectFilterOption(
+					filterValue.option,
+				)
+				const fields = projectTypes.value.includes('modpack')
+					? ['compatible_dependency_project_ids']
+					: dependencyTypes.map((type) => DEPENDENCY_TYPE_FIELDS[type])
+				const operator = filterValue.negative ? '!=' : '='
+				const conditions = fields.map(
+					(field) => `${field} ${operator} ${formatSearchFilterValue(projectId)}`,
+				)
+
+				if (conditions.length === 1) {
+					parts.push(conditions[0])
+				} else {
+					parts.push(`(${conditions.join(filterValue.negative ? ' AND ' : ' OR ')})`)
+				}
+				continue
+			}
+
 			const type = filters.value.find((type) => type.id === filterValue.type)
 			if (!type) {
 				console.error(`Filter type ${filterValue.type} not found`)
@@ -719,7 +802,9 @@ export function useSearch(
 					formatted_name: filterValue.option,
 					icon: undefined,
 					method: type.allows_custom_options,
-					value: filterValue.option,
+					value: type.custom_option_field
+						? `${type.custom_option_field}:${filterValue.option}`
+						: filterValue.option,
 				}
 			} else if (!option) {
 				console.error(`Filter option ${filterValue.option} not found`)
@@ -962,8 +1047,8 @@ export function useSearch(
 		currentFilters.value.forEach((filterValue) => {
 			const type = filters.value.find((type) => type.id === filterValue.type)
 			const option = type ? findFilterOption(type.options, filterValue.option) : undefined
-			if (type && option) {
-				const value = getOptionValue(option, filterValue.negative)
+			if (type && (option || type.allows_custom_options)) {
+				const value = option ? getOptionValue(option, filterValue.negative) : filterValue.option
 				if (items[type.query_param]) {
 					items[type.query_param].push(value)
 				} else {