完善申领物资页面，选择逻辑，加入购物车逻辑，填写数量逻辑

 <!--
  * @Date: 2024-07-23 12:53:15
  * @LastEditors: hookehuyr hookehuyr@gmail.com
- * @LastEditTime: 2024-07-24 11:05:03
+ * @LastEditTime: 2024-07-24 14:44:31
  * @FilePath: /temple_material_request/src/views/material_request.vue
  * @Description: 申领物资页面
 -->
 <template>
   <div class="material-request-page">
+
     <van-tabs v-model:active="active" @change="onChange" sticky :color="styleColor.baseColor">
       <van-tab v-for="index in 8" :title="'标签 ' + index">
         <div class="list-wrapper">
           <van-sticky  :offset-top="44">
             <van-row justify="space-between" class="select-all-item">
-              <van-col span="8"><van-icon name="passed" size="1.25rem" />&nbsp;&nbsp;<span :style="{ color: styleColor.baseColor }">全选</span></van-col>
+              <van-col span="8">
+                <van-icon v-if="is_all_checked" @click="onCheckAll()" name="checked" size="1.25rem" :color="styleColor.baseColor" />
+                <van-icon v-else name="passed" @click="onCheckAll()" size="1.25rem" />
+                <span @click="onCheckAll()" :style="{ color: styleColor.baseColor }">&nbsp;&nbsp;全选</span>
+              </van-col>
               <van-col span="16" style="text-align: right; font-size: 0.85rem; color: #666666;">参考上次同类活动的领用情况</van-col>
             </van-row>
           </van-sticky>
@@ -22,17 +27,31 @@
             finished-text="没有更多了"
             @load="onLoad"
           >
-            <div v-for="item in list" :key="item" class="list-boxer">
+              <div v-for="item in list" :id="item.id" :key="item.id" class="list-boxer">
                 <van-row align="center" justify="space-between">
                   <van-col span="16" style="display: flex;">
-                  <van-icon name="passed" size="1.25rem" />&nbsp;&nbsp;<div class="van-ellipsis" :style="{ color: styleColor.baseColor, textDecoration: 'underline' }" @click="onClickTitle(item)">床垫 1.2m*2m</div>
+                    <van-icon v-if="item.checked" @click="onCheck(item)" name="checked" size="1.25rem" :color="styleColor.baseColor" />
+                    <van-icon v-else name="passed" @click="onCheck(item)" size="1.25rem" />&nbsp;&nbsp;
+                    <div class="van-ellipsis" :style="{ color: styleColor.baseColor, textDecoration: 'underline' }" @click="onClickTitle(item)">
+                      {{ item.name }}
+                    </div>
                   </van-col>
                   <van-col span="8" style="display: flex; align-items: center;">
-                  <van-field v-model="num_value" style="border: 1px solid #f0f0f0; padding: 0; border-radius: 5px;" label="" label-width="0" input-align="center" placeholder="数量" type="number" >
+                    <van-field
+                      v-model="item.num"
+                      style="border: 1px solid #f0f0f0; padding: 0; border-radius: 5px;"
+                      label=""
+                      label-width="0"
+                      input-align="center"
+                      placeholder="数量"
+                      type="number"
+                      @blur="onBlur(item)"
+                    >
                       <template #left-icon></template>
                     </van-field>&nbsp;&nbsp;<span style="font-size: 0.9rem; color: #666;">个</span>
                   </van-col>
                 </van-row>
+                <div v-if="item.error" style="padding: 0.5rem 2rem 0 0; font-size: 0.85rem; color: red; text-align: right;">输入值有误</div>
               </div>
           </van-list>
           <div style="height: 6rem;"></div>
@@ -46,11 +65,12 @@
       <div style="display: flex; align-items: center;">
         <van-button plain type="primary" :color="styleColor.baseColor" @click="addShoppingCart">加入购物车</van-button>
         &nbsp;&nbsp;
-        <van-badge :content="5">
+        <van-badge :content="cart_count">
           <van-icon name="shopping-cart-o" size="2.5rem" :color="styleColor.baseColor" @click="goShoppingCart" />
         </van-badge>
       </div>
     </div>
+
   </div>
 
   <choose-material :show="show_choose_material" @close="onCloseChoose"></choose-material>
@@ -74,11 +94,58 @@ const $route = useRoute();
 const $router = useRouter();
 useTitle($route.meta.title);
 
+const is_all_checked = ref(false);
 const num_value = ref('');
 
+const onCheckAll = () => {
+  is_all_checked.value = !is_all_checked.value;
+  if (is_all_checked.value) {
+    list.value.forEach(item => {
+      item.checked = true;
+    })
+  } else {
+    list.value.forEach(item => {
+      item.checked = false;
+      item.error = false;
+    })
+  }
+}
+
+const onCheck = (item) => {
+  item.checked = !item.checked;
+  // 全部为选中
+  let all_checked = list.value.every((item) => item.checked === true);
+  if (all_checked) {
+    is_all_checked.value = true;
+  } else {
+    is_all_checked.value = false;
+  }
+  // 如果取消选中，隐藏错误提示
+  if (!item.checked) {
+    item.error = false;
+  }
+}
+
+const onBlur = (item) => { // 输入框失去焦点回调
+  if (item.checked) {
+    if (item.num === null || item.num === '') {
+      item.error = true;
+    } else {
+      item.error = false;
+    }
+  }
+}
+
 const active = ref(0);
-const onChange = (index) => {
+const onChange = (index) => { // 切换标签回调
   console.warn(index);
+  // 取消全选
+  is_all_checked.value = false;
+  // TODO：重新查询列表数据, 取消选中
+  list.value.forEach(item => {
+    item.checked = false;
+    item.error = false;
+  });
 }
 
 const list = ref([]);
@@ -90,7 +157,7 @@ const onLoad = () => {
   // setTimeout 仅做示例，真实场景中一般为 ajax 请求
   setTimeout(() => {
     for (let i = 0; i < 10; i++) {
-      list.value.push(list.value.length + 1);
+      list.value.push({ id: list.value.length + 1, name: '标题 床垫 1.2m*2m', num: null, checked: false, error: false });
     }
 
     // 加载状态结束
@@ -101,6 +168,8 @@ const onLoad = () => {
       finished.value = true;
     }
   }, 1000);
+  // TODO: 如果查询到的数据大于0，需要取消全选
+  is_all_checked.value = false;
 };
 
 const onClickTitle = (item) => { // 点击物资标题回调
@@ -113,8 +182,29 @@ const addMore = () => { // 添加更多
   show_choose_material.value = true;
 }
 
+const cart_count = ref(0);
+const shop_cart_list = ref([]); // 购物车列表
 const addShoppingCart = () => { // 加入购物车
-  console.warn('addShoppingCart');
+  shop_cart_list.value = [];
+  // 把选中的值集合
+  list.value
+  .filter(item => item.checked)
+  .forEach(item => {
+    shop_cart_list.value = shop_cart_list.value.concat(item);
+  });
+  // 校验购物车值
+  let error_list = shop_cart_list.value.filter((item) => { if (item.num === null || item.num === '') { return item;} })
+  if (error_list.length) {
+    // 跳到第一个错误框
+    scrollToSection(error_list[0].id);
+    // 标记所有错误
+    error_list.forEach(item => {
+      item.error = true;
+    })
+    return;
+  }
+  // 购物车数量
+  cart_count.value = shop_cart_list.value.length;
 }
 
 const goShoppingCart = () => { // 跳转购物车
@@ -131,6 +221,20 @@ const show_material_detail = ref(false);
 const onCloseDetail = () => {
   show_material_detail.value = false;
 }
+
+const scrollToSection = (id) => { // 滚动到指定位置
+  const current_index = list.value.findIndex((item) => item.id === id);
+  // 因为布局问题，需要滚动到上一个节点 查询上一个节点ID
+  const previous_index = current_index - 2 >= 0 ? current_index - 2 : 0;
+  nextTick(() => {
+    let element = $('.list-wrapper').find(`#${list.value[previous_index]['id']}`);
+    if (element[0]) {
+      element[0].scrollIntoView({ behavior: 'smooth' });
+    } else {
+      console.log('Element with ID ' + id + ' not found.');
+    }
+  })
+}
 </script>
 
 <style lang="less" scoped>