feat(entities-shared): create shared empty state component [KHCP-14355]

packages/entities/entities-shared/README.md

@@ -77,6 +77,7 @@ import '@kong-ui-public/entities-shared/dist/style.css'
 - [`<PermissionsWrapper.vue />`](docs/permissions-wrapper.md)
 - [`<EntityFormSection.vue />`](docs/entity-form-section.md)
 - [`<EntityLink.vue />`](docs/entity-link.md)
+- [`<EntityEmptyState.vue />`](docs/entity-empty-state.md)
 - [`<EntityToggleModal.vue />`](docs/entity-toggle-modal.md)
 - [`<EntityBaseConfigCard.vue />`](docs/entity-base-config-card.md)
 

packages/entities/entities-shared/docs/entity-empty-state.md

@@ -0,0 +1,77 @@
+# EntityEmptyState.vue
+
+An empty state component that displays title, description, and optionally pricing, action button, learn more, and a set of features cards. Used for engaging and onboarding new users with rich information and context.
+
+- [Requirements](#requirements)
+- [Usage](#usage)
+  - [Install](#install)
+  - [Props](#props)
+  - [Usage example](#usage-example)
+- [TypeScript interfaces](#typescript-interfaces)
+
+## Requirements
+
+- `vue` must be initialized in the host application
+- `@kong/kongponents` must be added as a `dependency` in the host application, globally available via the Vue Plugin installation, and the package's style imports must be added in the app entry file. [See here for instructions on installing Kongponents](https://kongponents.konghq.com/#globally-install-all-kongponents).
+
+## Usage
+
+### Install
+
+[See instructions for installing the `@kong-ui-public/entities-shared` package.](../README.md#install)
+
+### Props
+
+#### `title`
+
+- type: `String`
+- required: `true`
+
+Title for the empty state.
+
+#### `description`
+
+- type: `String`
+- default: `''`
+
+Description for the empty state.
+
+#### `pricing`
+
+- type: `String`
+- default: ``
+
+If provided, will display pricing information for transparency.
+
+#### `actionButtonText`
+
+- type: `String`
+- default: ``
+
+If provided, a CTA button will show with text and icon typically, for creating an entity.
+
+#### `learnMoreLink`
+
+- type: `Boolean`
+- default: false
+
+If provided, will show the Learning Hub button for the entity.
+
+#### `features`
+
+- type: `Array`
+- default: `[]`
+
+If provided, will display card for each feature of that entity, along with an icon, a title and a short description.
+
+### Usage example
+
+Please refer to the [sandbox](../src/components/entity-empty-state/EntityEmptyState.vue).
+
+## TypeScript interfaces
+
+TypeScript interfaces [are available here](https://github.com/Kong/public-ui-components/blob/main/packages/entities/entities-shared/src/types/entity-empty-state.ts) and can be directly imported into your host application. The following type interfaces are available for import:
+
+```ts
+import type { EmptyStateFeature } from '@kong-ui-public/entities-shared'
+```

packages/entities/entities-shared/sandbox/pages/EntityEmptyStatePage.vue

@@ -0,0 +1,47 @@
+<template>
+  <div class="sandbox-container">
+    <main>
+      <h3>Entity empty state</h3>
+      <EntityEmptyState
+        action-button-text="Create a gateway"
+        description="Lorem ipsum dolor sit amet consectetur adipisicing elit. Id quidem aperiam similique vitae beatae. Repellat quam voluptas vitae, maxime consequuntur praesentium suscipit. Numquam aliquid nulla vel esse accusantium reiciendis error?"
+        :features="features"
+        learn-more-link
+        pricing="Lorem ipsum dolor sit amet consectetur adipisicing elit."
+        title="Gateway Manager"
+        @create-button-clicked="console.log('create button clicked')"
+        @learning-hub-button-clicked="console.log('learning hub button clicked')"
+      >
+        <template #icon>
+          <RuntimesIcon />
+        </template>
+      </EntityEmptyState>
+    </main>
+  </div>
+</template>
+
+<script setup lang="ts">
+import { EntityEmptyState } from '../../src'
+import { RuntimesIcon } from '@kong/icons'
+
+const features = [
+  {
+    iconVariant: 'deploy',
+    title: 'First',
+    description: 'Lorem ipsum dolor sit amet consectetur adipisicing elit. Id quidem aperiam similique vitae beatae',
+  },
+  {
+    iconVariant: 'plug',
+    title: 'Second',
+    description: 'Lorem ipsum dolor sit amet consectetur adipisicing elit. Id quidem aperiam similique vitae beatae',
+  }, {
+    iconVariant: 'chartData',
+    title: 'Third ',
+    description: 'Lorem ipsum dolor sit amet consectetur adipisicing elit. Id quidem aperiam similique vitae beatae',
+  }, {
+    iconVariant: 'analytics',
+    title: 'Fourth',
+    description: 'Lorem ipsum dolor sit amet consectetur adipisicing elit. Id quidem aperiam similique vitae beatae',
+  },
+]
+</script>

packages/entities/entities-shared/sandbox/routes.ts

@@ -11,6 +11,13 @@ export const routes: Array<RouteRecordRaw & { label?: string }> = [
     label: 'EntityLink',
     component: () => import('./pages/EntityLinkPage.vue'),
   },
+
+  {
+    path: '/entity-empty-state',
+    name: 'entity-empty-state',
+    label: 'EntityEmptyState',
+    component: () => import('./pages/EntityEmptyStatePage.vue'),
+  },
   {
     path: '/entity-delete-modal',
     name: 'entity-delete-modal',

packages/entities/entities-shared/src/components/entity-empty-state/EntityEmptyState.vue

@@ -0,0 +1,216 @@
+<template>
+  <div class="kong-ui-public-entity-empty-state">
+    <div v-if="$slots.image">
+      <slot name="image" />
+    </div>
+    <div class="entity-empty-state-content">
+      <div
+        v-if="title || $slots.title || $slots['title-after']"
+        class="entity-empty-state-title"
+      >
+        <slot name="title" />
+        <div :title="title">
+          {{ title }}
+        </div>
+        <span v-if="$slots['title-after']">
+          <slot name="title-after" />
+        </span>
+      </div>
+      <div
+        v-if="description || $slots.default"
+        class="entity-empty-state-description"
+      >
+        <slot name="default">
+          <p>
+            {{ description }}
+          </p>
+        </slot>
+      </div>
+      <div
+        v-if="pricing"
+        class="entity-empty-state-pricing"
+      >
+        <p>
+          <b>{{ t('emptyState.pricingTitle') }}</b> <slot name="pricing">
+            {{ pricing }}
+          </slot>
+        </p>
+      </div>
+    </div>
+    <div
+      v-if="$slots.message"
+      class="entity-empty-state-message"
+    >
+      <slot name="message" />
+    </div>
+    <div class="entity-empty-state-action">
+      <KButton
+        v-if="actionButtonText || $slots.action"
+        appearance="primary"
+        size="large"
+        @click="$emit('create-button-clicked')"
+      >
+        <AddIcon />
+        {{ actionButtonText }}
+      </KButton>
+      <KButton
+        v-if="learnMoreLink"
+        appearance="secondary"
+        size="large"
+        @click="$emit('learning-hub-button-clicked')"
+      >
+        <BookIcon decorative />
+        {{ t('emptyState.learnMore') }}
+      </KButton>
+    </div>
+    <div class="entity-empty-state-card-container">
+      <template
+        v-for="feature in features"
+        :key="feature"
+      >
+        <KCard class="entity-empty-state-card">
+          <template #title>
+            <component
+              :is="getEntityIcon(feature.iconVariant)"
+              :color="KUI_COLOR_TEXT_NEUTRAL_STRONGER"
+              :size="KUI_ICON_SIZE_40"
+            />
+            <div class="card-title">
+              {{ feature.title }}
+            </div>
+          </template>
+          {{ feature.description }}
+        </KCard>
+      </template>
+    </div>
+  </div>
+</template>
+
+<script lang="ts" setup>
+import { type PropType } from 'vue'
+import { KButton } from '@kong/kongponents'
+import { BookIcon, AddIcon, DeployIcon, PlugIcon, ChartDataIcon, AnalyticsIcon } from '@kong/icons'
+import composables from '../../composables'
+import type { EmptyStateFeature } from 'src/types/entity-empty-state'
+import { KUI_ICON_SIZE_40, KUI_COLOR_TEXT_NEUTRAL_STRONGER } from '@kong/design-tokens'
+
+const getEntityIcon = (iconType: string): object => {
+  switch (iconType) {
+    case 'deploy':
+      return DeployIcon
+    case 'plug':
+      return PlugIcon
+    case 'chartData':
+      return ChartDataIcon
+    case 'analytics':
+      return AnalyticsIcon
+    default:
+      return BookIcon
+  }
+}
+
+defineProps({
+  title: {
+    type: String,
+    required: true,
+  },
+  description: {
+    type: String,
+    required: true,
+  },
+  pricing: {
+    type: String,
+    default: '',
+  },
+  actionButtonText: {
+    type: String,
+    default: '',
+  },
+  learnMoreLink: {
+    type: Boolean,
+    default: false,
+  },
+  features: {
+    type: Array as PropType<EmptyStateFeature[]>,
+    default: () => [],
+  },
+})
+
+defineEmits(['create-button-clicked', 'learning-hub-button-clicked'])
+
+const { i18n: { t } } = composables.useI18n()
+</script>
+
+<style lang="scss" scoped>
+.kong-ui-public-entity-empty-state {
+  align-items: center;
+  background-color: $kui-color-background;
+  box-sizing: border-box;
+  display: flex;
+  flex-direction: column;
+  font-family: $kui-font-family-text;
+  gap: $kui-space-100;
+  padding: $kui-space-130 $kui-space-150;
+  width: 100%;
+
+  .entity-empty-state-content {
+    align-items: center;
+    display: flex;
+    flex-direction: column;
+    gap: $kui-space-40;
+    text-align: center;
+    width: 100%;
+
+    .entity-empty-state-title {
+      color: $kui-color-text;
+      font-size: $kui-font-size-70;
+      font-weight: $kui-font-weight-bold;
+      line-height: $kui-line-height-60;
+    }
+  }
+
+  .entity-empty-state-description, .entity-empty-state-pricing {
+    color: $kui-color-text-neutral-strong;
+    font-size: $kui-font-size-30;
+    font-weight: $kui-font-weight-regular;
+    line-height: $kui-line-height-30;
+    max-width: 640px; // limit width so the description stays readable if it is too long
+
+    p {
+      margin: $kui-space-30;
+    }
+  }
+
+  .entity-empty-state-action {
+    align-items: center;
+    display: flex;
+    gap: $kui-space-50;
+  }
+
+  .entity-empty-state-card-container {
+    display: grid !important;
+    gap: $kui-space-60;
+    grid-template-columns: auto auto !important;
+
+    .entity-empty-state-card {
+      background-color: $kui-color-background-neutral-weakest;
+      border: $kui-border-width-10 solid $kui-color-border;
+      border-radius: $kui-border-radius-30;
+      color: $kui-color-text-neutral-weak;
+      gap: $kui-space-60;
+      height: 160px;
+      padding: $kui-space-80;
+      width: 312px;
+
+      :deep(.card-title) {
+        font-size: $kui-font-size-30;
+        font-weight: $kui-font-weight-semibold;
+      }
+
+      :deep(.card-content) {
+        color: $kui-color-text-neutral;
+      }
+    }
+  }
+}
+</style>

packages/entities/entities-shared/src/index.ts

@@ -10,6 +10,7 @@ import EntityToggleModal from './components/entity-toggle-modal/EntityToggleModa
 import PermissionsWrapper from './components/permissions-wrapper/PermissionsWrapper.vue'
 import EntityFormSection from './components/entity-form-section/EntityFormSection.vue'
 import EntityLink from './components/entity-link/EntityLink.vue'
+import EntityEmptyState from './components/entity-empty-state/EntityEmptyState.vue'
 import JsonCodeBlock from './components/common/JsonCodeBlock.vue'
 import TerraformCodeBlock from './components/common/TerraformCodeBlock.vue'
 import YamlCodeBlock from './components/common/YamlCodeBlock.vue'
@@ -20,7 +21,7 @@ import composables from './composables'
 const { useAxios, useDeleteUrlBuilder, useErrors, useExternalLinkCreator, useFetchUrlBuilder, useFetcher, useDebouncedFilter, useStringHelpers, useHelpers, useGatewayFeatureSupported, useTruncationDetector, useValidators, useSchemaProvider } = composables
 
 // Components
-export { EntityBaseConfigCard, ConfigCardItem, ConfigCardDisplay, InternalLinkItem, EntityBaseForm, EntityBaseTable, EntityDeleteModal, EntityFilter, EntityToggleModal, PermissionsWrapper, EntityFormSection, EntityLink, JsonCodeBlock, TerraformCodeBlock, YamlCodeBlock, TableTags }
+export { EntityBaseConfigCard, ConfigCardItem, ConfigCardDisplay, InternalLinkItem, EntityBaseForm, EntityBaseTable, EntityDeleteModal, EntityFilter, EntityToggleModal, PermissionsWrapper, EntityFormSection, EntityLink, EntityEmptyState, JsonCodeBlock, TerraformCodeBlock, YamlCodeBlock, TableTags }
 
 // Composables
 export { useAxios, useDeleteUrlBuilder, useErrors, useExternalLinkCreator, useFetchUrlBuilder, useFetcher, useDebouncedFilter, useStringHelpers, useHelpers, useGatewayFeatureSupported, useTruncationDetector, useValidators, useSchemaProvider }

packages/entities/entities-shared/src/locales/en.json

@@ -72,6 +72,10 @@
       "structuredFormat": "Structured"
     }
   },
+  "emptyState": {
+    "learnMore": "Learn more",
+    "pricingTitle": "Pricing: "
+  },
   "filter": {
     "filterButtonText": "Filter",
     "fieldLabel": "Filter by:",

packages/entities/entities-shared/src/types/entity-empty-state.ts

@@ -0,0 +1,5 @@
+export interface EmptyStateFeature {
+  iconVariant: string,
+  title: string,
+  description: string
+}