[iOS][TextInput]Add numberOfLines and maxNumberOfLines props to TextInput on iOS

packages/react-native/Libraries/Components/TextInput/RCTTextInputViewConfig.js

@@ -144,6 +144,8 @@ const RCTTextInputViewConfig = {
     placeholder: true,
     autoCorrect: true,
     multiline: true,
+    numberOfLines: true,
+    maximumNumberOfLines: true,
     textContentType: true,
     maxLength: true,
     autoCapitalize: true,

packages/react-native/Libraries/Components/TextInput/TextInput.d.ts

@@ -374,12 +374,6 @@ export interface TextInputAndroidProps {
    */
   inlineImagePadding?: number | undefined;
 
-  /**
-   * Sets the number of lines for a TextInput.
-   * Use it with multiline set to true to be able to fill the lines.
-   */
-  numberOfLines?: number | undefined;
-
   /**
    * Sets the return key to the label. Use it instead of `returnKeyType`.
    * @platform android
@@ -695,11 +689,29 @@ export interface TextInputProps
    */
   maxLength?: number | undefined;
 
+  /**
+   * Sets the maximum number of lines for a TextInput.
+   * Use it with multiline set to true to be able to fill the lines.
+   */
+  maxNumberOfLines?: number | undefined;
+
   /**
    * If true, the text input can be multiple lines. The default value is false.
    */
   multiline?: boolean | undefined;
 
+  /**
+   * Sets the number of lines for a TextInput.
+   * Use it with multiline set to true to be able to fill the lines.
+   */
+  numberOfLines?: number | undefined;
+
+  /**
+   * Sets the number of rows for a TextInput.
+   * Use it with multiline set to true to be able to fill the lines.
+   */
+  rows?: number | undefined;
+
   /**
    * Callback that is called when the text input is blurred
    */

packages/react-native/Libraries/Components/TextInput/TextInput.flow.js

@@ -366,26 +366,12 @@ type AndroidProps = $ReadOnly<{|
    */
   inlineImagePadding?: ?number,
 
-  /**
-   * Sets the number of lines for a `TextInput`. Use it with multiline set to
-   * `true` to be able to fill the lines.
-   * @platform android
-   */
-  numberOfLines?: ?number,
-
   /**
    * Sets the return key to the label. Use it instead of `returnKeyType`.
    * @platform android
    */
   returnKeyLabel?: ?string,
 
-  /**
-   * Sets the number of rows for a `TextInput`. Use it with multiline set to
-   * `true` to be able to fill the lines.
-   * @platform android
-   */
-  rows?: ?number,
-
   /**
    * When `false`, it will prevent the soft keyboard from showing when the field is focused.
    * Defaults to `true`.
@@ -665,6 +651,12 @@ export type Props = $ReadOnly<{|
    */
   keyboardType?: ?KeyboardType,
 
+  /**
+   * Sets the maximum number of lines for a `TextInput`. Use it with multiline set to
+   * `true` to be able to fill the lines.
+   */
+  maxNumberOfLines?: ?number,
+
   /**
    * Specifies largest possible scale a font can reach when `allowFontScaling` is enabled.
    * Possible values:
@@ -686,6 +678,12 @@ export type Props = $ReadOnly<{|
    */
   multiline?: ?boolean,
 
+  /**
+   * Sets the number of lines for a `TextInput`. Use it with multiline set to
+   * `true` to be able to fill the lines.
+   */
+  numberOfLines?: ?number,
+
   /**
    * Callback that is called when the text input is blurred.
    */
@@ -847,6 +845,12 @@ export type Props = $ReadOnly<{|
    */
   returnKeyType?: ?ReturnKeyType,
 
+  /**
+   * Sets the number of rows for a `TextInput`. Use it with multiline set to
+   * `true` to be able to fill the lines.
+   */
+  rows?: ?number,
+
   /**
    * If `true`, the text input obscures the text entered so that sensitive text
    * like passwords stay secure. The default value is `false`. Does not work with 'multiline={true}'.

packages/react-native/Libraries/Components/TextInput/TextInput.js

@@ -413,7 +413,6 @@ type AndroidProps = $ReadOnly<{|
   /**
    * Sets the number of lines for a `TextInput`. Use it with multiline set to
    * `true` to be able to fill the lines.
-   * @platform android
    */
   numberOfLines?: ?number,
 
@@ -426,10 +425,14 @@ type AndroidProps = $ReadOnly<{|
   /**
    * Sets the number of rows for a `TextInput`. Use it with multiline set to
    * `true` to be able to fill the lines.
-   * @platform android
    */
   rows?: ?number,
 
+  /**
+   * Sets the maximum number of lines the TextInput can have.
+   */
+  maxNumberOfLines?: ?number,
+
   /**
    * When `false`, it will prevent the soft keyboard from showing when the field is focused.
    * Defaults to `true`.
@@ -1102,6 +1105,9 @@ function InternalTextInput(props: Props): React.Node {
     accessibilityState,
     id,
     tabIndex,
+    rows,
+    numberOfLines,
+    maxNumberOfLines,
     selection: propsSelection,
     ...otherProps
   } = props;
@@ -1458,6 +1464,8 @@ function InternalTextInput(props: Props): React.Node {
         focusable={tabIndex !== undefined ? !tabIndex : focusable}
         mostRecentEventCount={mostRecentEventCount}
         nativeID={id ?? props.nativeID}
+        numberOfLines={props.rows ?? props.numberOfLines}
+        maximumNumberOfLines={maxNumberOfLines}
         onBlur={_onBlur}
         onKeyPressSync={props.unstable_onKeyPressSync}
         onChange={_onChange}
@@ -1513,6 +1521,7 @@ function InternalTextInput(props: Props): React.Node {
         mostRecentEventCount={mostRecentEventCount}
         nativeID={id ?? props.nativeID}
         numberOfLines={props.rows ?? props.numberOfLines}
+        maximumNumberOfLines={maxNumberOfLines}
         onBlur={_onBlur}
         onChange={_onChange}
         onFocus={_onFocus}

packages/react-native/Libraries/Text/Text.js

@@ -17,7 +17,11 @@ import flattenStyle from '../StyleSheet/flattenStyle';
 import processColor from '../StyleSheet/processColor';
 import Platform from '../Utilities/Platform';
 import TextAncestor from './TextAncestor';
-import {NativeText, NativeVirtualText} from './TextNativeComponent';
+import {
+  CONTAINS_MAX_NUMBER_OF_LINES_RENAME,
+  NativeText,
+  NativeVirtualText,
+} from './TextNativeComponent';
 import * as React from 'react';
 import {useContext, useMemo, useState} from 'react';
 
@@ -56,6 +60,7 @@ const Text: React.AbstractComponent<
     onStartShouldSetResponder,
     pressRetentionOffset,
     suppressHighlighting,
+    numberOfLines,
     ...restProps
   } = props;
 
@@ -195,14 +200,29 @@ const Text: React.AbstractComponent<
     }
   }
 
-  let numberOfLines = restProps.numberOfLines;
+  let numberOfLinesValue = numberOfLines;
   if (numberOfLines != null && !(numberOfLines >= 0)) {
     console.error(
       `'numberOfLines' in <Text> must be a non-negative number, received: ${numberOfLines}. The value will be set to 0.`,
     );
-    numberOfLines = 0;
+    numberOfLinesValue = 0;
   }
 
+  const numberOfLinesProps = useMemo((): {
+    maximumNumberOfLines?: ?number,
+    numberOfLines?: ?number,
+  } => {
+    if (CONTAINS_MAX_NUMBER_OF_LINES_RENAME) {
+      return {
+        maximumNumberOfLines: numberOfLinesValue,
+      };
+    } else {
+      return {
+        numberOfLines: numberOfLinesValue,
+      };
+    }
+  }, [numberOfLinesValue]);
+
   const hasTextAncestor = useContext(TextAncestor);
 
   const _accessible = Platform.select({
@@ -241,7 +261,6 @@ const Text: React.AbstractComponent<
       isHighlighted={isHighlighted}
       isPressable={isPressable}
       nativeID={id ?? nativeID}
-      numberOfLines={numberOfLines}
       ref={forwardedRef}
       selectable={_selectable}
       selectionColor={selectionColor}
@@ -252,6 +271,7 @@ const Text: React.AbstractComponent<
       <NativeText
         {...restProps}
         {...eventHandlersForText}
+        {...numberOfLinesProps}
         accessibilityLabel={ariaLabel ?? accessibilityLabel}
         accessibilityState={nativeTextAccessibilityState}
         accessible={
@@ -264,7 +284,6 @@ const Text: React.AbstractComponent<
         ellipsizeMode={ellipsizeMode ?? 'tail'}
         isHighlighted={isHighlighted}
         nativeID={id ?? nativeID}
-        numberOfLines={numberOfLines}
         ref={forwardedRef}
         selectable={_selectable}
         selectionColor={selectionColor}

packages/react-native/Libraries/Text/Text/RCTTextViewManager.mm

@@ -26,7 +26,7 @@ @implementation RCTTextViewManager {
 
 RCT_EXPORT_MODULE(RCTText)
 
-RCT_REMAP_SHADOW_PROPERTY(numberOfLines, maximumNumberOfLines, NSInteger)
+RCT_EXPORT_SHADOW_PROPERTY(maximumNumberOfLines, NSInteger)
 RCT_REMAP_SHADOW_PROPERTY(ellipsizeMode, lineBreakMode, NSLineBreakMode)
 RCT_REMAP_SHADOW_PROPERTY(adjustsFontSizeToFit, adjustsFontSizeToFit, BOOL)
 RCT_REMAP_SHADOW_PROPERTY(minimumFontScale, minimumFontScale, CGFloat)

packages/react-native/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.mm

@@ -7,6 +7,8 @@
 
 #import <React/RCTMultilineTextInputView.h>
 #import <React/RCTMultilineTextInputViewManager.h>
+#import <React/RCTUITextView.h>
+#import <React/RCTBaseTextInputShadowView.h>
 
 @implementation RCTMultilineTextInputViewManager
 
@@ -17,8 +19,21 @@ - (UIView *)view
   return [[RCTMultilineTextInputView alloc] initWithBridge:self.bridge];
 }
 
+- (RCTShadowView *)shadowView
+{
+  RCTBaseTextInputShadowView *shadowView = (RCTBaseTextInputShadowView *)[super shadowView];
+
+  shadowView.maximumNumberOfLines = 0;
+  shadowView.exactNumberOfLines = 0;
+
+  return shadowView;
+}
+
 #pragma mark - Multiline <TextInput> (aka TextView) specific properties
 
 RCT_REMAP_VIEW_PROPERTY(dataDetectorTypes, backedTextInputView.dataDetectorTypes, UIDataDetectorTypes)
 
+RCT_EXPORT_SHADOW_PROPERTY(maximumNumberOfLines, NSInteger)
+RCT_REMAP_SHADOW_PROPERTY(numberOfLines, exactNumberOfLines, NSInteger)
+
 @end

packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputShadowView.h

@@ -16,6 +16,7 @@ NS_ASSUME_NONNULL_BEGIN
 @property (nonatomic, copy, nullable) NSString *text;
 @property (nonatomic, copy, nullable) NSString *placeholder;
 @property (nonatomic, assign) NSInteger maximumNumberOfLines;
+@property (nonatomic, assign) NSInteger exactNumberOfLines;
 @property (nonatomic, copy, nullable) RCTDirectEventBlock onContentSizeChange;
 
 - (void)uiManagerWillPerformMounting;

packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputShadowView.mm

@@ -218,7 +218,22 @@ - (NSAttributedString *)measurableAttributedText
 
 - (CGSize)sizeThatFitsMinimumSize:(CGSize)minimumSize maximumSize:(CGSize)maximumSize
 {
-  NSAttributedString *attributedText = [self measurableAttributedText];
+  NSMutableAttributedString *attributedText = [[self measurableAttributedText] mutableCopy];
+
+  /*
+  * The block below is responsible for setting the exact height of the view in lines
+  * Unfortunatelly, iOS doesn't export any easy way to do it. So we set maximumNumberOfLines
+  * prop and then add random lines at the front. However, they are only used for layout
+  * so they are not visible on the screen.
+  */
+  if (self.exactNumberOfLines) {
+    NSMutableString *newLines = [NSMutableString stringWithCapacity:self.exactNumberOfLines];
+    for (NSUInteger i = 0UL; i < self.exactNumberOfLines; ++i) {
+      [newLines appendString:@"\n"];
+    }
+    [attributedText insertAttributedString:[[NSAttributedString alloc] initWithString:newLines attributes:self.textAttributes.effectiveTextAttributes] atIndex:0];
+    _maximumNumberOfLines = self.exactNumberOfLines;
+  }
 
   if (!_textStorage) {
     _textContainer = [NSTextContainer new];

packages/react-native/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.mm

@@ -19,6 +19,7 @@ - (RCTShadowView *)shadowView
   RCTBaseTextInputShadowView *shadowView = (RCTBaseTextInputShadowView *)[super shadowView];
 
   shadowView.maximumNumberOfLines = 1;
+  shadowView.exactNumberOfLines = 0;
 
   return shadowView;
 }

packages/react-native/Libraries/Text/TextNativeComponent.js

@@ -9,6 +9,7 @@
  */
 
 import {createViewConfig} from '../NativeComponent/ViewConfig';
+import getNativeComponentAttributes from '../ReactNative/getNativeComponentAttributes';
 import UIManager from '../ReactNative/UIManager';
 import createReactNativeComponentClass from '../Renderer/shims/createReactNativeComponentClass';
 import {type HostComponent} from '../Renderer/shims/ReactNativeTypes';
@@ -18,6 +19,7 @@ import {type TextProps} from './TextProps';
 
 type NativeTextProps = $ReadOnly<{
   ...TextProps,
+  maximumNumberOfLines?: ?number,
   isHighlighted?: ?boolean,
   selectionColor?: ?ProcessedColorValue,
   onClick?: ?(event: PressEvent) => mixed,
@@ -31,7 +33,7 @@ const textViewConfig = {
   validAttributes: {
     isHighlighted: true,
     isPressable: true,
-    numberOfLines: true,
+    maximumNumberOfLines: true,
     ellipsizeMode: true,
     allowFontScaling: true,
     dynamicTypeRamp: true,
@@ -73,6 +75,12 @@ export const NativeText: HostComponent<NativeTextProps> =
     createViewConfig(textViewConfig),
   ): any);
 
+const jestIsDefined = typeof jest !== 'undefined';
+export const CONTAINS_MAX_NUMBER_OF_LINES_RENAME: boolean = jestIsDefined
+  ? true
+  : getNativeComponentAttributes('RCTText')?.NativeProps
+      ?.maximumNumberOfLines === 'number';
+
 export const NativeVirtualText: HostComponent<NativeTextProps> =
   !global.RN$Bridgeless && !UIManager.hasViewManagerConfig('RCTVirtualText')
     ? NativeText

packages/react-native/ReactCommon/react/renderer/attributedstring/ParagraphAttributes.cpp

@@ -16,13 +16,15 @@ namespace facebook::react {
 
 bool ParagraphAttributes::operator==(const ParagraphAttributes &rhs) const {
   return std::tie(
+             numberOfLines,
              maximumNumberOfLines,
              ellipsizeMode,
              textBreakStrategy,
              adjustsFontSizeToFit,
              includeFontPadding,
              android_hyphenationFrequency) ==
       std::tie(
+             rhs.numberOfLines,
              rhs.maximumNumberOfLines,
              rhs.ellipsizeMode,
              rhs.textBreakStrategy,
@@ -42,6 +44,7 @@ bool ParagraphAttributes::operator!=(const ParagraphAttributes &rhs) const {
 #if RN_DEBUG_STRING_CONVERTIBLE
 SharedDebugStringConvertibleList ParagraphAttributes::getDebugProps() const {
   return {
+      debugStringConvertibleItem("numberOfLines", numberOfLines),
       debugStringConvertibleItem("maximumNumberOfLines", maximumNumberOfLines),
       debugStringConvertibleItem("ellipsizeMode", ellipsizeMode),
       debugStringConvertibleItem("textBreakStrategy", textBreakStrategy),