feat: add sticky block component (#4919)

#### What type of PR is this?

/kind feature
/area console
/milestone 2.11.x

#### What this PR does / why we need it:

添加 `<StickyBlock />` 组件，用于将元素固定在顶部或者底部。

此外，此 PR 针对主题设置、插件设置、系统设置等表单可能较长的页面使用了此组件。

<img width="1214" alt="图片" src="https://github.com/halo-dev/halo/assets/21301288/abc849eb-a9a9-4d0a-b81c-d7430815660d">


#### Which issue(s) this PR fixes:

Fixes https://github.com/halo-dev/halo/issues/4548

#### Special notes for your reviewer:

#### Does this PR introduce a user-facing change?

```release-note
添加 `<StickyBlock />` 组件，用于将元素固定在顶部或者底部，并为主题 / 插件 / 系统设置的底部保存按钮区域做了适配。
```

console/console-src/modules/interface/themes/ThemeSetting.vue

@@ -14,6 +14,7 @@ import { apiClient } from "@/utils/api-client";
 import { useSettingFormConvert } from "@console/composables/use-setting-form";
 import { useI18n } from "vue-i18n";
 import { useQuery, useQueryClient } from "@tanstack/vue-query";
+import StickyBlock from "@/components/sticky-block/StickyBlock.vue";
 
 const { t } = useI18n();
 const queryClient = useQueryClient();
@@ -86,17 +87,19 @@ await suspense();
           :data="configMapFormData[group]"
         />
       </FormKit>
-      <div v-permission="['system:themes:manage']" class="pt-5">
+      <StickyBlock
-        <div class="flex justify-start">
+        v-permission="['system:themes:manage']"
-          <VButton
+        class="-mx-4 -mb-4 rounded-b-base rounded-t-lg bg-white p-4 pt-5"
-            :loading="saving"
+        position="bottom"
-            type="secondary"
+      >
-            @click="$formkit.submit(group || '')"
+        <VButton
-          >
+          :loading="saving"
-            {{ $t("core.common.buttons.save") }}
+          type="secondary"
-          </VButton>
+          @click="$formkit.submit(group || '')"
-        </div>
+        >
-      </div>
+          {{ $t("core.common.buttons.save") }}
+        </VButton>
+      </StickyBlock>
     </div>
   </Transition>
 </template>

console/console-src/modules/system/plugins/tabs/Setting.vue

@@ -14,6 +14,7 @@ import type { ConfigMap, Plugin, Setting } from "@halo-dev/api-client";
 import { useI18n } from "vue-i18n";
 import { useQuery, useQueryClient } from "@tanstack/vue-query";
 import { toRaw } from "vue";
+import StickyBlock from "@/components/sticky-block/StickyBlock.vue";
 
 const { t } = useI18n();
 const queryClient = useQueryClient();
@@ -82,17 +83,20 @@ const handleSaveConfigMap = async () => {
           />
         </FormKit>
       </div>
-      <div v-permission="['system:plugins:manage']" class="pt-5">
+
-        <div class="flex justify-start">
+      <StickyBlock
-          <VButton
+        v-permission="['system:plugins:manage']"
-            :loading="saving"
+        class="-mx-4 -mb-4 rounded-b-base rounded-t-lg bg-white p-4 pt-5"
-            type="secondary"
+        position="bottom"
-            @click="$formkit.submit(group || '')"
+      >
-          >
+        <VButton
-            {{ $t("core.common.buttons.save") }}
+          :loading="saving"
-          </VButton>
+          type="secondary"
-        </div>
+          @click="$formkit.submit(group || '')"
-      </div>
+        >
+          {{ $t("core.common.buttons.save") }}
+        </VButton>
+      </StickyBlock>
     </div>
   </Transition>
 </template>

console/console-src/modules/system/settings/SystemSettings.vue

@@ -82,7 +82,7 @@ provide<Ref<Setting | undefined>>("setting", setting);
   </VPageHeader>
 
   <div class="m-0 md:m-4">
-    <VCard :body-class="['!p-0']">
+    <VCard :body-class="['!p-0', '!overflow-visible']">
       <template #header>
         <VTabbar
           v-model:active-id="activeTab"
@@ -91,7 +91,7 @@ provide<Ref<Setting | undefined>>("setting", setting);
           type="outline"
         ></VTabbar>
       </template>
-      <div class="bg-white">
+      <div class="rounded-b-base bg-white">
         <template v-for="tab in tabs" :key="tab.id">
           <component :is="tab.component" v-if="activeTab === tab.id" />
         </template>

console/console-src/modules/system/settings/tabs/NotificationSetting.vue

@@ -10,6 +10,7 @@ import { computed } from "vue";
 import { toRaw } from "vue";
 import type { FormKitSchemaCondition, FormKitSchemaNode } from "@formkit/core";
 import { useI18n } from "vue-i18n";
+import StickyBlock from "@/components/sticky-block/StickyBlock.vue";
 
 const queryClient = useQueryClient();
 const { t } = useI18n();
@@ -86,17 +87,20 @@ const { isLoading: isMutating, mutate } = useMutation({
       >
         <FormKitSchema :schema="toRaw(formSchema)" :data="configMapData" />
       </FormKit>
-      <div class="pt-5">
+
-        <div class="flex justify-start">
+      <StickyBlock
-          <VButton
+        v-permission="['system:configmaps:manage']"
-            :loading="isMutating"
+        class="-mx-4 -mb-4 rounded-b-base rounded-t-lg bg-white p-4 pt-5"
-            type="secondary"
+        position="bottom"
-            @click="$formkit.submit(name)"
+      >
-          >
+        <VButton
-            {{ $t("core.common.buttons.save") }}
+          :loading="isMutating"
-          </VButton>
+          type="secondary"
-        </div>
+          @click="$formkit.submit(name)"
-      </div>
+        >
+          {{ $t("core.common.buttons.save") }}
+        </VButton>
+      </StickyBlock>
     </div>
   </Transition>
 </template>

console/console-src/modules/system/settings/tabs/Setting.vue

@@ -4,6 +4,7 @@ import { computed, ref, type Ref, inject, toRaw } from "vue";
 
 // components
 import { Toast, VButton } from "@halo-dev/components";
+import StickyBlock from "@/components/sticky-block/StickyBlock.vue";
 
 // hooks
 import { useSettingFormConvert } from "@console/composables/use-setting-form";
@@ -67,35 +68,36 @@ const handleSaveConfigMap = async () => {
 </script>
 <template>
   <Transition mode="out-in" name="fade">
-    <div class="bg-white p-4">
+    <div class="p-4">
-      <div>
+      <FormKit
-        <FormKit
+        v-if="group && formSchema && configMapFormData?.[group]"
-          v-if="group && formSchema && configMapFormData?.[group]"
+        :id="group"
-          :id="group"
+        v-model="configMapFormData[group]"
-          v-model="configMapFormData[group]"
+        :name="group"
-          :name="group"
+        :actions="false"
-          :actions="false"
+        :preserve="true"
-          :preserve="true"
+        type="form"
-          type="form"
+        @submit="handleSaveConfigMap"
-          @submit="handleSaveConfigMap"
+      >
+        <FormKitSchema
+          :schema="toRaw(formSchema)"
+          :data="configMapFormData[group]"
+        />
+      </FormKit>
+
+      <StickyBlock
+        v-permission="['system:configmaps:manage']"
+        class="-mx-4 -mb-4 rounded-b-base rounded-t-lg bg-white p-4 pt-5"
+        position="bottom"
+      >
+        <VButton
+          :loading="saving"
+          type="secondary"
+          @click="$formkit.submit(group || '')"
         >
-          <FormKitSchema
+          {{ $t("core.common.buttons.save") }}
-            :schema="toRaw(formSchema)"
+        </VButton>
-            :data="configMapFormData[group]"
+      </StickyBlock>
-          />
-        </FormKit>
-      </div>
-      <div v-permission="['system:configmaps:manage']" class="pt-5">
-        <div class="flex justify-start">
-          <VButton
-            :loading="saving"
-            type="secondary"
-            @click="$formkit.submit(group || '')"
-          >
-            {{ $t("core.common.buttons.save") }}
-          </VButton>
-        </div>
-      </div>
     </div>
   </Transition>
 </template>

console/src/components/sticky-block/StickyBlock.vue

@@ -0,0 +1,53 @@
+<script setup lang="ts">
+import { useEventListener } from "@vueuse/core";
+import { ref, onMounted } from "vue";
+
+const props = withDefaults(
+  defineProps<{
+    position?: "top" | "bottom";
+  }>(),
+  {
+    position: "top",
+  }
+);
+
+const stickyBlock = ref<HTMLElement | null>(null);
+const isSticky = ref(false);
+
+function computeSticky() {
+  if (!stickyBlock.value) return;
+  const rect = stickyBlock.value?.getBoundingClientRect();
+
+  if (props.position === "top") {
+    isSticky.value = rect.top <= 0;
+  } else {
+    isSticky.value = rect.bottom >= window.innerHeight;
+  }
+}
+
+onMounted(() => {
+  computeSticky();
+});
+
+useEventListener("scroll", computeSticky);
+</script>
+
+<template>
+  <div
+    ref="stickyBlock"
+    :class="{ 'sticky-element': true, 'sticky-shadow': isSticky }"
+  >
+    <slot />
+  </div>
+</template>
+
+<style>
+.sticky-element {
+  position: sticky;
+  bottom: 0;
+}
+
+.sticky-shadow {
+  box-shadow: 0px -5px 10px -5px rgba(0, 0, 0, 0.1);
+}
+</style>