OmniCard/mpuniapp/components/image-uploader/image-uploader.uvue

<template>
  <view class="uploader-container">
    <view class="uploader-grid">
      <!-- 已选图片列表 -->
      <view
        v-for="(url, index) in state.images"
        :key="index"
        class="uploader-item"
      >
        <image
          class="uploader-img"
          :src="url"
          mode="aspectFill"
          @click="handlePreview(index)"
        />
        <view
          v-if="!disabled"
          class="uploader-delete-btn"
          @click="handleDelete(index)"
        >
          <text class="uploader-delete-icon">×</text>
        </view>
      </view>

      <!-- 上传卡片触发区 -->
      <view
        v-if="canAdd && !disabled"
        class="uploader-trigger"
        @click="handleChoose"
      >
        <text class="uploader-trigger-plus">+</text>
        <text class="uploader-trigger-text">{{ state.uploading ? '上传中' : '添加图片' }}</text>
      </view>
    </view>
  </view>
</template>

<script setup lang="uts">
import {
  createImageUploaderState,
  removeImageByIndex,
  previewImageAt,
  chooseAndUploadImages,
  ImageUploaderState,
} from './useImageUploader.uts';

const props = withDefaults(
  defineProps<{
    modelValue?: string[];
    multiple?: boolean;
    maxCount?: number;
    disabled?: boolean;
  }>(),
  {
    modelValue: () => [] as string[],
    multiple: false,
    maxCount: 9,
    disabled: false,
  }
);

const emit = defineEmits<{
  (e: 'update:modelValue', value: string[]): void;
  (e: 'change', value: string[]): void;
}>();

const state = reactive(createImageUploaderState(props.modelValue));

watch(
  () => props.modelValue,
  (newVal: string[]) => {
    state.images = newVal != null ? newVal.slice() : [];
  }
);

const canAdd = computed(() => {
  const limit = props.multiple ? props.maxCount : 1;
  return state.images.length < limit;
});

function handlePreview(index: number): void {
  previewImageAt(state, index);
}

function handleDelete(index: number): void {
  removeImageByIndex(state, index);
  emit('update:modelValue', state.images);
  emit('change', state.images);
}

async function handleChoose(): Promise<void> {
  if (state.uploading || props.disabled) {
    return;
  }
  const ok = await chooseAndUploadImages(state, {
    multiple: props.multiple,
    maxCount: props.multiple ? props.maxCount : 1,
  });
  if (ok) {
    emit('update:modelValue', state.images);
    emit('change', state.images);
  }
}
</script>

<style scoped>
.uploader-container {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.uploader-grid {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 12px;
}

.uploader-item {
  position: relative;
  width: 80px;
  height: 80px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--oc-border, #E3E7ED);
  background-color: var(--oc-surface, #F7F8FA);
}

.uploader-img {
  width: 100%;
  height: 100%;
}

.uploader-delete-btn {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  border-radius: 12px;
  background-color: rgba(16, 24, 40, 0.65);
  display: flex;
  align-items: center;
  justify-content: center;
}

.uploader-delete-icon {
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
}

.uploader-trigger {
  width: 80px;
  height: 80px;
  border-radius: 12px;
  border: 1px dashed var(--oc-border, #C9CDD4);
  background-color: var(--oc-surface, #F7F8FA);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.uploader-trigger-plus {
  font-size: 24px;
  color: var(--oc-text-2, #667085);
  line-height: 1;
  margin-bottom: 2px;
}

.uploader-trigger-text {
  font-size: 11px;
  color: var(--oc-text-2, #667085);
}
</style>