Updates from Thu Feb 26

- [Children] Expose React.Children like web React | James Ide
- Remove touch handler assertions - not always true | Tadeu Zagallo
- [treehouse] Add support for clear button on UITextFields | Sumeet Vaidya
- [Touch] Suite of touchable events on TouchableHighlight/Opacity | James Ide
- [Images] Bail out when GIF data is in unexpected format instead of crashing | James Ide

Examples/UIExplorer/TouchableExample.js

@@ -12,6 +12,7 @@ var {
   StyleSheet,
   Text,
   TouchableHighlight,
+  TouchableOpacity,
   View,
 } = React;
 
@@ -57,6 +58,13 @@ exports.examples = [
   render: function() {
     return <TextOnPressBox />;
   },
+}, {
+  title: 'Touchable feedback events',
+  description: '<Touchable*> components accept onPress, onPressIn, ' +
+    'onPressOut, and onLongPress as props.',
+  render: function() {
+    return <TouchableFeedbackEvents />;
+  },
 }];
 
 var TextOnPressBox = React.createClass({
@@ -95,11 +103,46 @@ var TextOnPressBox = React.createClass({
   }
 });
 
+var TouchableFeedbackEvents = React.createClass({
+  getInitialState: function() {
+    return {
+      eventLog: [],
+    };
+  },
+  render: function() {
+    return (
+      <View>
+        <View style={[styles.row, {justifyContent: 'center'}]}>
+        <TouchableOpacity
+          style={styles.wrapper}
+          onPress={() => this._appendEvent('press')}
+          onPressIn={() => this._appendEvent('pressIn')}
+          onPressOut={() => this._appendEvent('pressOut')}
+          onLongPress={() => this._appendEvent('longPress')}>
+          <Text style={styles.button}>
+            Press Me
+          </Text>
+        </TouchableOpacity>
+      </View>
+        <View style={styles.eventLogBox}>
+          {this.state.eventLog.map((e, ii) => <Text key={ii}>{e}</Text>)}
+        </View>
+      </View>
+    );
+  },
+  _appendEvent: function(eventName) {
+    var limit = 6;
+    var eventLog = this.state.eventLog.slice(0, limit - 1);
+    eventLog.unshift(eventName);
+    this.setState({eventLog});
+  },
+});
+
 var heartImage = {uri: 'https://pbs.twimg.com/media/BlXBfT3CQAA6cVZ.png:small'};
 
 var styles = StyleSheet.create({
   row: {
-    alignItems: 'center',
+    justifyContent: 'center',
     flexDirection: 'row',
   },
   icon: {
@@ -113,6 +156,9 @@ var styles = StyleSheet.create({
   text: {
     fontSize: 16,
   },
+  button: {
+    color: '#007AFF',
+  },
   wrapper: {
     borderRadius: 8,
   },
@@ -127,6 +173,14 @@ var styles = StyleSheet.create({
     borderColor: '#f0f0f0',
     backgroundColor: '#f9f9f9',
   },
+  eventLogBox: {
+    padding: 10,
+    margin: 10,
+    height: 120,
+    borderWidth: 1 / PixelRatio.get(),
+    borderColor: '#f0f0f0',
+    backgroundColor: '#f9f9f9',
+  },
   textBlock: {
     fontWeight: 'bold',
     color: 'blue',

Libraries/Components/TextInput/TextInput.ios.js

@@ -68,6 +68,15 @@ var autoCapitalizeMode = {
   characters: nativeConstants.AllCharacters
 };
 
+var clearButtonModeConstants = NativeModulesDeprecated.RKUIManager.UITextField.clearButtonMode;
+
+var clearButtonModeTypes = {
+  never: clearButtonModeConstants.Never,
+  whileEditing: clearButtonModeConstants.WhileEditing,
+  unlessEditing: clearButtonModeConstants.UnlessEditing,
+  always: clearButtonModeConstants.Always,
+};
+
 var keyboardType = {
   default: 'default',
   numeric: 'numeric',
@@ -90,6 +99,7 @@ var RKTextViewAttributes = merge(ReactIOSViewAttributes.UIView, {
 var RKTextFieldAttributes = merge(RKTextViewAttributes, {
   caretHidden: true,
   enabled: true,
+  clearButtonMode: true,
 });
 
 var onlyMultiline = {
@@ -105,6 +115,7 @@ var notMultiline = {
 var TextInput = React.createClass({
   statics: {
     autoCapitalizeMode: autoCapitalizeMode,
+    clearButtonModeTypes: clearButtonModeTypes,
     keyboardType: keyboardType,
   },
 
@@ -188,6 +199,10 @@ var TextInput = React.createClass({
      * and/or laggy typing, depending on how you process onChange events.
      */
     controlled: PropTypes.bool,
+    /**
+     * When the clear button should appear on the right side of the text view
+     */
+    clearButtonMode: PropTypes.oneOf(getObjectValues(clearButtonModeTypes)),
 
     style: Text.stylePropType,
   },
@@ -316,6 +331,7 @@ var TextInput = React.createClass({
           text={this.state.bufferedValue}
           autoCapitalize={this.props.autoCapitalize}
           autoCorrect={this.props.autoCorrect}
+          clearButtonMode={this.props.clearButtonMode}
         />;
     } else {
       for (var propKey in notMultiline) {

Libraries/Components/Touchable/TouchableFeedbackPropType.js

@@ -0,0 +1,22 @@
+/**
+ * Copyright 2004-present Facebook. All Rights Reserved.
+ *
+ * @providesModule TouchableFeedbackPropType
+ * @flow
+ */
+'use strict';
+
+var { PropTypes } = require('React');
+
+var TouchableFeedbackPropType = {
+  /**
+   * Called when the touch is released, but not if cancelled (e.g. by a scroll
+   * that steals the responder lock).
+   */
+  onPress: PropTypes.func,
+  onPressIn: PropTypes.func,
+  onPressOut: PropTypes.func,
+  onLongPress: PropTypes.func,
+};
+
+module.exports = TouchableFeedbackPropType;

Libraries/Components/Touchable/TouchableHighlight.js

@@ -11,6 +11,7 @@ var ReactIOSViewAttributes = require('ReactIOSViewAttributes');
 var StyleSheet = require('StyleSheet');
 var TimerMixin = require('TimerMixin');
 var Touchable = require('Touchable');
+var TouchableFeedbackPropType = require('TouchableFeedbackPropType');
 var View = require('View');
 
 var cloneWithProps = require('cloneWithProps');
@@ -50,6 +51,7 @@ var DEFAULT_PROPS = {
 
 var TouchableHighlight = React.createClass({
   propTypes: {
+    ...TouchableFeedbackPropType,
     /**
      * Called when the touch is released, but not if cancelled (e.g. by
      * a scroll that steals the responder lock).
@@ -127,12 +129,14 @@ var TouchableHighlight = React.createClass({
     this.clearTimeout(this._hideTimeout);
     this._hideTimeout = null;
     this._showUnderlay();
+    this.props.onPressIn && this.props.onPressIn();
   },
 
   touchableHandleActivePressOut: function() {
     if (!this._hideTimeout) {
       this._hideUnderlay();
     }
+    this.props.onPressOut && this.props.onPressOut();
   },
 
   touchableHandlePress: function() {
@@ -142,6 +146,10 @@ var TouchableHighlight = React.createClass({
     this.props.onPress && this.props.onPress();
   },
 
+  touchableHandleLongPress: function() {
+    this.props.onLongPress && this.props.onLongPress();
+  },
+
   touchableGetPressRectOffset: function() {
     return PRESS_RECT_OFFSET;   // Always make sure to predeclare a constant!
   },

Libraries/Components/Touchable/TouchableOpacity.js

@@ -9,6 +9,7 @@ var NativeMethodsMixin = require('NativeMethodsMixin');
 var POPAnimationMixin = require('POPAnimationMixin');
 var React = require('React');
 var Touchable = require('Touchable');
+var TouchableFeedbackPropType = require('TouchableFeedbackPropType');
 
 var cloneWithProps = require('cloneWithProps');
 var ensureComponentIsNative = require('ensureComponentIsNative');
@@ -41,11 +42,7 @@ var TouchableOpacity = React.createClass({
   mixins: [Touchable.Mixin, NativeMethodsMixin, POPAnimationMixin],
 
   propTypes: {
-    /**
-     * Called when the touch is released, but not if cancelled (e.g. by
-     * a scroll that steals the responder lock).
-     */
-    onPress: React.PropTypes.func,
+    ...TouchableFeedbackPropType,
     /**
      * Determines what the opacity of the wrapped view should be when touch is
      * active.
@@ -97,10 +94,12 @@ var TouchableOpacity = React.createClass({
     this.refs[CHILD_REF].setNativeProps({
       opacity: this.props.activeOpacity
     });
+    this.props.onPressIn && this.props.onPressIn();
   },
 
   touchableHandleActivePressOut: function() {
     this.setOpacityTo(1.0);
+    this.props.onPressOut && this.props.onPressOut();
   },
 
   touchableHandlePress: function() {
@@ -108,6 +107,10 @@ var TouchableOpacity = React.createClass({
     this.props.onPress && this.props.onPress();
   },
 
+  touchableHandleLongPress: function() {
+    this.props.onLongPress && this.props.onLongPress();
+  },
+
   touchableGetPressRectOffset: function() {
     return PRESS_RECT_OFFSET;   // Always make sure to predeclare a constant!
   },

Libraries/Components/Touchable/TouchableWithoutFeedback.js

@@ -7,7 +7,7 @@
 
 var React = require('React');
 var Touchable = require('Touchable');
-var View = require('View');
+var TouchableFeedbackPropType = require('TouchableFeedbackPropType');
 
 var copyProperties = require('copyProperties');
 var onlyChild = require('onlyChild');
@@ -29,12 +29,7 @@ var PRESS_RECT_OFFSET = {top: 20, left: 20, right: 20, bottom: 30};
 var TouchableWithoutFeedback = React.createClass({
   mixins: [Touchable.Mixin],
 
-  propTypes: {
-    onPress: React.PropTypes.func,
-    onPressIn: React.PropTypes.func,
-    onPressOut: React.PropTypes.func,
-    onLongPress: React.PropTypes.func,
-  },
+  propTypes: TouchableFeedbackPropType,
 
   getInitialState: function() {
     return this.touchableGetInitialState();

Libraries/ReactIOS/ReactIOS.js

@@ -6,6 +6,7 @@
 
 "use strict";
 
+var ReactChildren = require('ReactChildren');
 var ReactComponent = require('ReactComponent');
 var ReactCompositeComponent = require('ReactCompositeComponent');
 var ReactContext = require('ReactContext');
@@ -20,6 +21,7 @@ var ReactPropTypes = require('ReactPropTypes');
 
 var deprecated = require('deprecated');
 var invariant = require('invariant');
+var onlyChild = require('onlyChild');
 
 ReactIOSDefaultInjection.inject();
 
@@ -73,6 +75,12 @@ var render = function(component, mountInto) {
 
 var ReactIOS = {
   hasReactIOSInitialized: false,
+  Children: {
+    map: ReactChildren.map,
+    forEach: ReactChildren.forEach,
+    count: ReactChildren.count,
+    only: onlyChild
+  },
   PropTypes: ReactPropTypes,
   createClass: ReactCompositeComponent.createClass,
   createElement: createElement,

ReactKit/Base/RCTConvert.m

@@ -446,6 +446,9 @@ RCT_STRUCT_CONVERTER(CGAffineTransform, (@[@"a", @"b", @"c", @"d", @"tx", @"ty"]
     }
 
     imageSource = CGImageSourceCreateWithData((CFDataRef)data, NULL);
+  } else {
+      RCTLogMustFix(@"Expected NSString or NSData for GIF, received %@: %@", [json class], json);
+      return nil;
   }
 
   if (!UTTypeConformsTo(CGImageSourceGetType(imageSource), kUTTypeGIF)) {

ReactKit/Base/RCTTouchHandler.m

@@ -77,9 +77,10 @@ typedef NS_ENUM(NSInteger, RCTTouchEventType) {
       }
       targetView = targetView.superview;
     }
-    
-    RCTAssert(targetView.reactTag && targetView.userInteractionEnabled,
-              @"No react view found for touch - something went wrong.");
+
+    if (!targetView.reactTag || !targetView.userInteractionEnabled) {
+      return;
+    }
 
     // Get new, unique touch id
     const NSUInteger RCTMaxTouches = 11; // This is the maximum supported by iDevices
@@ -113,7 +114,10 @@ typedef NS_ENUM(NSInteger, RCTTouchEventType) {
 {
   for (UITouch *touch in touches) {
     NSUInteger index = [_nativeTouches indexOfObject:touch];
-    RCTAssert(index != NSNotFound, @"Touch is already removed. This is a critical bug.");
+    if(index == NSNotFound) {
+      continue;
+    }
+
     [_touchViews removeObjectAtIndex:index];
     [_nativeTouches removeObjectAtIndex:index];
     [_reactTouches removeObjectAtIndex:index];
@@ -159,10 +163,17 @@ typedef NS_ENUM(NSInteger, RCTTouchEventType) {
   NSMutableArray *changedIndexes = [[NSMutableArray alloc] init];
   for (UITouch *touch in touches) {
     NSInteger index = [_nativeTouches indexOfObject:touch];
-    RCTAssert(index != NSNotFound, @"Touch not found. This is a critical bug.");
+    if (index == NSNotFound) {
+      continue;
+    }
+
     [self _updateReactTouchAtIndex:index];
     [changedIndexes addObject:@(index)];
   }
+
+  if (changedIndexes.count == 0) {
+    return;
+  }
   
   // Deep copy the touches because they will be accessed from another thread
   // TODO: would it be safer to do this in the bridge or executor, rather than trusting caller?