feat: placeholder component in hoppscotch-ui (#3123)

Co-authored-by: Andrew Bastin <andrewbastin.k@gmail.com>

packages/hoppscotch-common/src/components/graphql/Authorization.vue

@@ -114,19 +114,12 @@
         />
       </div>
     </div>
-    <div
+    <HoppSmartPlaceholder
       v-if="authType === 'none'"
-      class="flex flex-col items-center justify-center p-4 text-secondaryLight"
+      :src="`/images/states/${colorMode.value}/login.svg`"
+      :alt="`${t('empty.authorization')}`"
+      :text="t('empty.authorization')"
     >
-      <img
-        :src="`/images/states/${colorMode.value}/login.svg`"
-        loading="lazy"
-        class="inline-flex flex-col object-contain object-center w-16 h-16 my-4"
-        :alt="`${t('empty.authorization')}`"
-      />
-      <span class="pb-4 text-center">
-        {{ t("empty.authorization") }}
-      </span>
       <HoppButtonSecondary
         outline
         :label="t('app.documentation')"
@@ -136,7 +129,7 @@
         reverse
         class="mb-4"
       />
-    </div>
+    </HoppSmartPlaceholder>
     <div v-else class="flex flex-1 border-b border-dividerLight">
       <div class="w-2/3 border-r border-dividerLight">
         <div v-if="authType === 'basic'">

packages/hoppscotch-common/src/components/graphql/RequestOptions.vue

@@ -289,19 +289,12 @@
               </div>
             </template>
           </draggable>
-          <div
+          <HoppSmartPlaceholder
             v-if="workingHeaders.length === 0"
-            class="flex flex-col items-center justify-center p-4 text-secondaryLight"
+            :src="`/images/states/${colorMode.value}/add_category.svg`"
+            :alt="`${t('empty.headers')}`"
+            :text="t('empty.headers')"
           >
-            <img
-              :src="`/images/states/${colorMode.value}/add_category.svg`"
-              loading="lazy"
-              class="inline-flex flex-col object-contain object-center w-16 h-16 my-4"
-              :alt="`${t('empty.headers')}`"
-            />
-            <span class="pb-4 text-center">
-              {{ t("empty.headers") }}
-            </span>
             <HoppButtonSecondary
               :label="`${t('add.new')}`"
               filled
@@ -309,7 +302,7 @@
               class="mb-4"
               @click="addHeader"
             />
-          </div>
+          </HoppSmartPlaceholder>
         </div>
       </HoppSmartTab>
       <HoppSmartTab :id="'authorization'" :label="`${t('tab.authorization')}`">

packages/hoppscotch-common/src/components/graphql/Response.vue

@@ -1,12 +1,13 @@
 <template>
   <div class="flex flex-col flex-1 overflow-auto whitespace-nowrap">
-    <div
+    <HoppSmartPlaceholder
       v-if="responseString === 'loading'"
-      class="flex flex-col items-center justify-center p-4 text-secondaryLight"
+      :text="t('state.loading')"
     >
-      <HoppSmartSpinner class="my-4" />
-      <span class="text-secondaryLight">{{ t("state.loading") }}</span>
-    </div>
+      <template #icon>
+        <HoppSmartSpinner class="my-4" />
+      </template>
+    </HoppSmartPlaceholder>
     <div v-else-if="responseString" class="flex flex-col flex-1">
       <div
         class="sticky top-0 z-10 flex items-center justify-between flex-shrink-0 pl-4 overflow-x-auto border-b bg-primary border-dividerLight"

packages/hoppscotch-common/src/components/graphql/Sidebar.vue

@@ -24,25 +24,18 @@
       :icon="IconBookOpen"
       :label="`${t('tab.documentation')}`"
     >
-      <div
+      <HoppSmartPlaceholder
         v-if="
           queryFields.length === 0 &&
           mutationFields.length === 0 &&
           subscriptionFields.length === 0 &&
           graphqlTypes.length === 0
         "
-        class="flex flex-col items-center justify-center p-4 text-secondaryLight"
+        :src="`/images/states/${colorMode.value}/add_comment.svg`"
+        :alt="`${t('empty.documentation')}`"
+        :text="t('empty.documentation')"
       >
-        <img
-          :src="`/images/states/${colorMode.value}/add_comment.svg`"
-          loading="lazy"
-          class="inline-flex flex-col object-contain object-center w-16 h-16 my-4"
-          :alt="`${t('empty.documentation')}`"
-        />
-        <span class="mb-4 text-center">
-          {{ t("empty.documentation") }}
-        </span>
-      </div>
+      </HoppSmartPlaceholder>
       <div v-else>
         <div
           class="sticky top-0 z-10 flex flex-shrink-0 overflow-x-auto bg-primary"
@@ -172,20 +165,13 @@
         ref="schemaEditor"
         class="flex flex-col flex-1"
       ></div>
-      <div
+      <HoppSmartPlaceholder
         v-else
-        class="flex flex-col items-center justify-center p-4 text-secondaryLight"
+        :src="`/images/states/${colorMode.value}/blockchain.svg`"
+        :alt="`${t('empty.schema')}`"
+        :text="t('empty.schema')"
       >
-        <img
-          :src="`/images/states/${colorMode.value}/blockchain.svg`"
-          loading="lazy"
-          class="inline-flex flex-col object-contain object-center w-16 h-16 my-4"
-          :alt="`${t('empty.schema')}`"
-        />
-        <span class="mb-4 text-center">
-          {{ t("empty.schema") }}
-        </span>
-      </div>
+      </HoppSmartPlaceholder>
     </HoppSmartTab>
   </HoppSmartTabs>
 </template>