feat(field): add new slot input & add new event click-input (#3932)

fix #3604

packages/field/README.md

@@ -185,8 +185,9 @@ Page({
 
 ### 真机上为什么会出现聚焦时 placeholder 加粗、闪烁的现象？
 
-- 由于微信小程序的 input 组件和 textarea 组件是原生组件，聚焦时会将原生的输入框覆盖在对应位置上，导致了这个现象的产生。
-- 相关的讨论可以查看[微信开放社区](https://developers.weixin.qq.com/community/search?query=placeholder%20%E9%97%AA%E7%83%81%20%E5%8A%A0%E7%B2%97)
+由于微信小程序的 input 组件和 textarea 组件是原生组件，聚焦时会将原生的输入框覆盖在对应位置上，导致了这个现象的产生。
+
+相关的讨论可以查看[微信开放社区](https://developers.weixin.qq.com/community/search?query=placeholder%20%E9%97%AA%E7%83%81%20%E5%8A%A0%E7%B2%97)
 
 ### 真机上 placeholder 为什么会盖过 popup 等其它组件？
 
@@ -198,9 +199,9 @@ Page({
 
 同时 `placeholder-style` 对 `vertical-align`、`line-height` 等大量 css 属性都不生效。
 
-这一系列的问题导致了 placeholder 在真机上可能会出现偏移。@vant/weapp 已经尽量抹平 textarea 在不同环境下的差异。
+这一系列的问题导致了 placeholder 在真机上可能会出现偏移。
 
-微信已经将 `padding` 的问题列为修复中的问题，可以查看[微信开放社区](https://developers.weixin.qq.com/community/develop/issue/96)
+微信已经在 `2.10.0` 基础库版本后支持移除默认的 `padding`，但低版本仍有问题。详情可以查看 [微信开放社区](https://developers.weixin.qq.com/community/develop/issue/96)
 
 ### 手写输入法为什么会丢失部分字符 / 手写输入法为什么不会触发 input 事件？
 
@@ -259,24 +260,26 @@ Page({
 
 | 事件 | 说明 | 回调参数 |
 | --- | --- | --- |
-| bind:input | 输入内容时触发 | value: 当前输入值 |
-| bind:change | 输入内容时触发 | value: 当前输入值 |
-| bind:confirm | 点击完成按钮时触发 | value: 当前输入值 |
+| bind:input | 输入内容时触发 | event.detail: 当前输入值 |
+| bind:change | 输入内容时触发 | event.detail: 当前输入值 |
+| bind:confirm | 点击完成按钮时触发 | event.detail: 当前输入值 |
 | bind:click-icon | 点击尾部图标时触发 | - |
 | bind:focus | 输入框聚焦时触发 | event.detail.value: 当前输入值; <br>event.detail.height: 键盘高度 |
 | bind:blur | 输入框失焦时触发 | event.detail.value: 当前输入值; <br>event.detail.cursor: 游标位置(如果 `type` 不为 `textarea`，值为 `0`) |
 | bind:clear | 点击清空控件时触发 | - |
+| bind:click-input | 点击输入区域时触发 | - |
 | bind:linechange | 输入框行数变化时调用，只对 textarea 有效 | event.detail = { height: 0, heightRpx: 0, lineCount: 0 } |
 | bind:keyboardheightchange | 键盘高度发生变化的时候触发此事件 | event.detail = { height: height, duration: duration } |
 
 ### Slot
 
-| 名称       | 说明                                            |
-| ---------- | ----------------------------------------------- |
-| label      | 自定义输入框标签，如果设置了`label`属性则不生效 |
-| left-icon  | 自定义输入框头部图标                            |
-| right-icon | 自定义输入框尾部图标                            |
-| button     | 自定义输入框尾部按钮                            |
+| 名称       | 说明                                                       |
+| ---------- | ---------------------------------------------------------- |
+| label      | 自定义输入框标签，如果设置了`label`属性则不生效            |
+| left-icon  | 自定义输入框头部图标                                       |
+| right-icon | 自定义输入框尾部图标                                       |
+| button     | 自定义输入框尾部按钮                                       |
+| input      | 自定义输入框，使用此插槽后，与输入框相关的属性和事件将失效 |
 
 ### 外部样式类
 

packages/field/index.less

@@ -24,9 +24,13 @@
     }
   }
 
-  &__input {
-    position: relative;
+  &__control:empty + &__control {
     display: block;
+  }
+
+  &__control {
+    position: relative;
+    display: none;
     box-sizing: border-box;
     width: 100%;
     margin: 0;
@@ -36,10 +40,15 @@
     background-color: transparent;
     border: 0;
     resize: none;
+
     .theme(color, '@field-input-text-color');
     .theme(height, '@cell-line-height');
     .theme(min-height, '@cell-line-height');
 
+    &:empty {
+      display: none;
+    }
+
     &--textarea {
       .theme(height, '@field-text-area-min-height');
       .theme(min-height, '@field-text-area-min-height');
@@ -62,6 +71,13 @@
     &--right {
       text-align: right;
     }
+
+    &--custom {
+      display: flex;
+      align-items: center;
+
+      .theme(min-height, '@cell-line-height');
+    }
   }
 
   &__placeholder {

packages/field/index.ts

@@ -1,3 +1,4 @@
+import { nextTick } from '../common/utils';
 import { VantComponent } from '../common/component';
 import { commonProps, inputProps, textareaProps } from './props';
 
@@ -86,12 +87,16 @@ VantComponent({
       this.$emit('click-icon');
     },
 
+    onClickInput(event: WechatMiniprogram.TouchEvent) {
+      this.$emit('click-input', event.detail);
+    },
+
     onClear() {
       this.setData({ innerValue: '' });
       this.value = '';
       this.setShowClear();
 
-      wx.nextTick(() => {
+      nextTick(() => {
         this.emitChange();
         this.$emit('clear', '');
       });
@@ -132,7 +137,7 @@ VantComponent({
     emitChange() {
       this.setData({ value: this.value });
 
-      wx.nextTick(() => {
+      nextTick(() => {
         this.$emit('input', this.value);
         this.$emit('change', this.value);
       });
@@ -141,6 +146,7 @@ VantComponent({
     setShowClear() {
       const { clearable, readonly } = this.data;
       const { focused, value } = this;
+
       this.setData({
         showClear: !!clearable && !!focused && !!value && !readonly,
       });

packages/field/index.wxml

@@ -21,63 +21,12 @@
   </view>
   <slot wx:else name="label" slot="title" />
   <view class="{{ utils.bem('field__body', [type]) }}">
-    <textarea
-      wx:if="{{ type === 'textarea' }}"
-      class="input-class {{ utils.bem('field__input', [inputAlign, type, { disabled, error }]) }}"
-      fixed="{{ fixed }}"
-      focus="{{ focus }}"
-      cursor="{{ cursor }}"
-      value="{{ innerValue }}"
-      auto-focus="{{ autoFocus }}"
-      disabled="{{ disabled || readonly }}"
-      maxlength="{{ maxlength }}"
-      placeholder="{{ placeholder }}"
-      placeholder-style="{{ placeholderStyle }}"
-      placeholder-class="{{ utils.bem('field__placeholder', { error, disabled }) }}"
-      auto-height="{{ !!autosize }}"
-      style="{{ computed.inputStyle(autosize) }}"
-      cursor-spacing="{{ cursorSpacing }}"
-      adjust-position="{{ adjustPosition }}"
-      show-confirm-bar="{{ showConfirmBar }}"
-      hold-keyboard="{{ holdKeyboard }}"
-      selection-end="{{ selectionEnd }}"
-      selection-start="{{ selectionStart }}"
-      disable-default-padding="{{ disableDefaultPadding }}"
-      bindinput="onInput"
-      bindblur="onBlur"
-      bindfocus="onFocus"
-      bindconfirm="onConfirm"
-      bindlinechange="onLineChange"
-      bindkeyboardheightchange="onKeyboardHeightChange"
-    >
-    </textarea>
-    <input
-      wx:else
-      class="input-class {{ utils.bem('field__input', [inputAlign, { disabled, error }]) }}"
-      type="{{ type }}"
-      focus="{{ focus }}"
-      cursor="{{ cursor }}"
-      value="{{ innerValue }}"
-      auto-focus="{{ autoFocus }}"
-      disabled="{{ disabled || readonly }}"
-      maxlength="{{ maxlength }}"
-      placeholder="{{ placeholder }}"
-      placeholder-style="{{ placeholderStyle }}"
-      placeholder-class="{{ utils.bem('field__placeholder', { error }) }}"
-      confirm-type="{{ confirmType }}"
-      confirm-hold="{{ confirmHold }}"
-      hold-keyboard="{{ holdKeyboard }}"
-      cursor-spacing="{{ cursorSpacing }}"
-      adjust-position="{{ adjustPosition }}"
-      selection-end="{{ selectionEnd }}"
-      selection-start="{{ selectionStart }}"
-      password="{{ password || type === 'password' }}"
-      bindinput="onInput"
-      bindblur="onBlur"
-      bindfocus="onFocus"
-      bindconfirm="onConfirm"
-      bindkeyboardheightchange="onKeyboardHeightChange"
-    />
+    <view class="{{ utils.bem('field__control', [inputAlign, 'custom']) }}" bindtap="onClickInput">
+      <slot name="input" />
+    </view>
+    <include wx:if="{{ type === 'textarea' }}" src="textarea.wxml" />
+    <include wx:else src="input.wxml" />
+
     <van-icon
       wx:if="{{ showClear }}"
       name="clear"

packages/field/input.wxml

@@ -0,0 +1,27 @@
+<input
+  class="{{ utils.bem('field__control', [inputAlign, { disabled, error }]) }} input-class"
+  type="{{ type }}"
+  focus="{{ focus }}"
+  cursor="{{ cursor }}"
+  value="{{ innerValue }}"
+  auto-focus="{{ autoFocus }}"
+  disabled="{{ disabled || readonly }}"
+  maxlength="{{ maxlength }}"
+  placeholder="{{ placeholder }}"
+  placeholder-style="{{ placeholderStyle }}"
+  placeholder-class="{{ utils.bem('field__placeholder', { error }) }}"
+  confirm-type="{{ confirmType }}"
+  confirm-hold="{{ confirmHold }}"
+  hold-keyboard="{{ holdKeyboard }}"
+  cursor-spacing="{{ cursorSpacing }}"
+  adjust-position="{{ adjustPosition }}"
+  selection-end="{{ selectionEnd }}"
+  selection-start="{{ selectionStart }}"
+  password="{{ password || type === 'password' }}"
+  bindinput="onInput"
+  bindtap="onClickInput"
+  bindblur="onBlur"
+  bindfocus="onFocus"
+  bindconfirm="onConfirm"
+  bindkeyboardheightchange="onKeyboardHeightChange"
+/>

packages/field/props.ts

@@ -1,7 +1,7 @@
-export const commonProps = {
+export const commonProps: WechatMiniprogram.Component.PropertyOption = {
   value: {
     type: String,
-    observer(this: WechatMiniprogram.Component.TrivialInstance, value: string) {
+    observer(this: WechatMiniprogram.Component.TrivialInstance, value) {
       if (value !== this.value) {
         this.setData({ innerValue: value });
         this.value = value;
@@ -41,7 +41,7 @@ export const commonProps = {
   holdKeyboard: Boolean,
 };
 
-export const inputProps = {
+export const inputProps: WechatMiniprogram.Component.PropertyOption = {
   type: {
     type: String,
     value: 'text',
@@ -51,7 +51,7 @@ export const inputProps = {
   confirmHold: Boolean,
 };
 
-export const textareaProps = {
+export const textareaProps: WechatMiniprogram.Component.PropertyOption = {
   autoHeight: Boolean,
   fixed: Boolean,
   showConfirmBar: {

packages/field/textarea.wxml

@@ -0,0 +1,29 @@
+<textarea
+  class="{{ utils.bem('field__control', [inputAlign, type, { disabled, error }]) }} input-class"
+  fixed="{{ fixed }}"
+  focus="{{ focus }}"
+  cursor="{{ cursor }}"
+  value="{{ innerValue }}"
+  auto-focus="{{ autoFocus }}"
+  disabled="{{ disabled || readonly }}"
+  maxlength="{{ maxlength }}"
+  placeholder="{{ placeholder }}"
+  placeholder-style="{{ placeholderStyle }}"
+  placeholder-class="{{ utils.bem('field__placeholder', { error, disabled }) }}"
+  auto-height="{{ !!autosize }}"
+  style="{{ computed.inputStyle(autosize) }}"
+  cursor-spacing="{{ cursorSpacing }}"
+  adjust-position="{{ adjustPosition }}"
+  show-confirm-bar="{{ showConfirmBar }}"
+  hold-keyboard="{{ holdKeyboard }}"
+  selection-end="{{ selectionEnd }}"
+  selection-start="{{ selectionStart }}"
+  disable-default-padding="{{ disableDefaultPadding }}"
+  bindinput="onInput"
+  bindtap="onClickInput"
+  bindblur="onBlur"
+  bindfocus="onFocus"
+  bindconfirm="onConfirm"
+  bindlinechange="onLineChange"
+  bindkeyboardheightchange="onKeyboardHeightChange"
+/>