[new feature] Popup: support getContaienr (#611)

packages/picker/PickerColumn.vue

@@ -13,6 +13,7 @@
       <li
         v-for="(option, index) in options"
         v-text="getOptionText(option)"
+        class="van-ellipsis"
         :class="{
           'van-picker-column--disabled': isDisabled(option),
           'van-picker-column--selected': index === currentIndex

packages/picker/index.vue

@@ -3,8 +3,8 @@
     <div class="van-picker__toolbar van-hairline--top-bottom" v-if="showToolbar">
       <slot>
         <div class="van-picker__cancel" @click="emit('cancel')">{{ cancelButtonText || $t('cancel') }}</div>
+        <div class="van-picker__title van-ellipsis" v-if="title" v-text="title" />
         <div class="van-picker__confirm" @click="emit('confirm')">{{ confirmButtonText || $t('confirm') }}</div>
-        <div class="van-picker__title" v-if="title" v-text="title" />
       </slot>
     </div>
     <div class="van-picker__columns" @touchmove.prevent>