From ef5cec4f087be58f4a994636a2251ef7cffd622f Mon Sep 17 00:00:00 2001 From: Nick Lockwood Date: Fri, 24 Jul 2015 08:25:51 -0700 Subject: [PATCH] Text highlighting on iOS Summary: This diff implements highlighting of tapped text subranges for the iOS `` component, styled to match how iOS webkit views highlight links (translucent grey overlay with rounded corners). Highlighting is enabled by default for any `` component which has an onPress handler. To disable the highlight, add `suppressHighlighting={true}` to the component props. --- Examples/UIExplorer/TextExample.ios.js | 11 +++++++- .../UIExplorer.xcodeproj/project.pbxproj | 2 ++ .../RCTActionSheet.xcodeproj/project.pbxproj | 2 ++ .../RCTAdSupport.xcodeproj/project.pbxproj | 2 ++ .../RCTGeolocation.xcodeproj/project.pbxproj | 2 ++ .../Image/RCTImage.xcodeproj/project.pbxproj | 2 ++ .../RCTLinking.xcodeproj/project.pbxproj | 2 ++ .../RCTNetwork.xcodeproj/project.pbxproj | 2 ++ .../project.pbxproj | 2 ++ .../RCTTest/RCTTest.xcodeproj/project.pbxproj | 2 ++ .../RCTSettings.xcodeproj/project.pbxproj | 2 ++ Libraries/Text/RCTText.m | 28 +++++++++++++++++++ .../Text/RCTText.xcodeproj/project.pbxproj | 2 ++ .../RCTVibration.xcodeproj/project.pbxproj | 2 ++ .../RCTWebSocket.xcodeproj/project.pbxproj | 2 ++ React/React.xcodeproj/project.pbxproj | 2 ++ 16 files changed, 66 insertions(+), 1 deletion(-) diff --git a/Examples/UIExplorer/TextExample.ios.js b/Examples/UIExplorer/TextExample.ios.js index 4aff00e73..1574f8a0b 100644 --- a/Examples/UIExplorer/TextExample.ios.js +++ b/Examples/UIExplorer/TextExample.ios.js @@ -269,7 +269,7 @@ exports.examples = [ right right right right right right right right right right right right right - justify: this text component's contents are laid out with "textAlign: justify" + justify: this text component{"'"}s contents are laid out with "textAlign: justify" and as you can see all of the lines except the last one span the available width of the parent container. @@ -369,6 +369,15 @@ exports.examples = [ ); }, +}, { + title: 'Text highlighting (tap the link to see highlight)', + render: function() { + return ( + + Lorem ipsum dolor sit amet, null}>consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. + + ); + }, }]; var styles = StyleSheet.create({ diff --git a/Examples/UIExplorer/UIExplorer.xcodeproj/project.pbxproj b/Examples/UIExplorer/UIExplorer.xcodeproj/project.pbxproj index dd7200d21..9052af3e2 100644 --- a/Examples/UIExplorer/UIExplorer.xcodeproj/project.pbxproj +++ b/Examples/UIExplorer/UIExplorer.xcodeproj/project.pbxproj @@ -1037,6 +1037,7 @@ GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; GCC_WARN_MULTIPLE_DEFINITION_TYPES_FOR_SELECTOR = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_STRICT_SELECTOR_MATCH = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; @@ -1092,6 +1093,7 @@ GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; GCC_WARN_MULTIPLE_DEFINITION_TYPES_FOR_SELECTOR = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_STRICT_SELECTOR_MATCH = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; diff --git a/Libraries/ActionSheetIOS/RCTActionSheet.xcodeproj/project.pbxproj b/Libraries/ActionSheetIOS/RCTActionSheet.xcodeproj/project.pbxproj index a73b70085..ba116104d 100644 --- a/Libraries/ActionSheetIOS/RCTActionSheet.xcodeproj/project.pbxproj +++ b/Libraries/ActionSheetIOS/RCTActionSheet.xcodeproj/project.pbxproj @@ -151,6 +151,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -190,6 +191,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/AdSupport/RCTAdSupport.xcodeproj/project.pbxproj b/Libraries/AdSupport/RCTAdSupport.xcodeproj/project.pbxproj index 238838a93..b4cd622b8 100644 --- a/Libraries/AdSupport/RCTAdSupport.xcodeproj/project.pbxproj +++ b/Libraries/AdSupport/RCTAdSupport.xcodeproj/project.pbxproj @@ -151,6 +151,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -195,6 +196,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/Geolocation/RCTGeolocation.xcodeproj/project.pbxproj b/Libraries/Geolocation/RCTGeolocation.xcodeproj/project.pbxproj index 93d6a375f..0295e541c 100644 --- a/Libraries/Geolocation/RCTGeolocation.xcodeproj/project.pbxproj +++ b/Libraries/Geolocation/RCTGeolocation.xcodeproj/project.pbxproj @@ -151,6 +151,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -190,6 +191,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/Image/RCTImage.xcodeproj/project.pbxproj b/Libraries/Image/RCTImage.xcodeproj/project.pbxproj index 6f18a284f..372b7bc5b 100644 --- a/Libraries/Image/RCTImage.xcodeproj/project.pbxproj +++ b/Libraries/Image/RCTImage.xcodeproj/project.pbxproj @@ -211,6 +211,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -250,6 +251,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/LinkingIOS/RCTLinking.xcodeproj/project.pbxproj b/Libraries/LinkingIOS/RCTLinking.xcodeproj/project.pbxproj index 89fcdffb1..844d94cf6 100644 --- a/Libraries/LinkingIOS/RCTLinking.xcodeproj/project.pbxproj +++ b/Libraries/LinkingIOS/RCTLinking.xcodeproj/project.pbxproj @@ -148,6 +148,7 @@ GCC_SYMBOLS_PRIVATE_EXTERN = NO; GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -182,6 +183,7 @@ GCC_C_LANGUAGE_STANDARD = gnu99; GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/Network/RCTNetwork.xcodeproj/project.pbxproj b/Libraries/Network/RCTNetwork.xcodeproj/project.pbxproj index 88835214b..8243ac65f 100644 --- a/Libraries/Network/RCTNetwork.xcodeproj/project.pbxproj +++ b/Libraries/Network/RCTNetwork.xcodeproj/project.pbxproj @@ -169,6 +169,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -208,6 +209,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/PushNotificationIOS/RCTPushNotification.xcodeproj/project.pbxproj b/Libraries/PushNotificationIOS/RCTPushNotification.xcodeproj/project.pbxproj index 7b555c089..4281a469f 100644 --- a/Libraries/PushNotificationIOS/RCTPushNotification.xcodeproj/project.pbxproj +++ b/Libraries/PushNotificationIOS/RCTPushNotification.xcodeproj/project.pbxproj @@ -148,6 +148,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -188,6 +189,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/RCTTest/RCTTest.xcodeproj/project.pbxproj b/Libraries/RCTTest/RCTTest.xcodeproj/project.pbxproj index 24ffac392..eae9a6e62 100644 --- a/Libraries/RCTTest/RCTTest.xcodeproj/project.pbxproj +++ b/Libraries/RCTTest/RCTTest.xcodeproj/project.pbxproj @@ -189,6 +189,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -233,6 +234,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/Settings/RCTSettings.xcodeproj/project.pbxproj b/Libraries/Settings/RCTSettings.xcodeproj/project.pbxproj index a0a5e1bf1..8d9edf8d4 100644 --- a/Libraries/Settings/RCTSettings.xcodeproj/project.pbxproj +++ b/Libraries/Settings/RCTSettings.xcodeproj/project.pbxproj @@ -149,6 +149,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -188,6 +189,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/Text/RCTText.m b/Libraries/Text/RCTText.m index 9dc8e4200..23dabfbc5 100644 --- a/Libraries/Text/RCTText.m +++ b/Libraries/Text/RCTText.m @@ -17,6 +17,7 @@ { NSTextStorage *_textStorage; NSMutableArray *_reactSubviews; + CAShapeLayer *_highlightLayer; } - (instancetype)initWithFrame:(CGRect)frame @@ -78,8 +79,35 @@ NSTextContainer *textContainer = [layoutManager.textContainers firstObject]; CGRect textFrame = UIEdgeInsetsInsetRect(self.bounds, _contentInset); NSRange glyphRange = [layoutManager glyphRangeForTextContainer:textContainer]; + [layoutManager drawBackgroundForGlyphRange:glyphRange atPoint:textFrame.origin]; [layoutManager drawGlyphsForGlyphRange:glyphRange atPoint:textFrame.origin]; + + __block UIBezierPath *highlightPath = nil; + [layoutManager.textStorage enumerateAttributesInRange:glyphRange options:0 usingBlock:^(NSDictionary *attrs, NSRange range, __unused BOOL *stop){ + if ([attrs[RCTIsHighlightedAttributeName] boolValue]) { + [layoutManager enumerateEnclosingRectsForGlyphRange:range withinSelectedGlyphRange:range inTextContainer:textContainer usingBlock:^(CGRect r, __unused BOOL *s){ + UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:CGRectInset(r, -2, -2) cornerRadius:2]; + if (highlightPath) { + [highlightPath appendPath:path]; + } else { + highlightPath = path; + } + }]; + } + }]; + + if (highlightPath) { + if (!_highlightLayer) { + _highlightLayer = [CAShapeLayer layer]; + _highlightLayer.fillColor = [UIColor colorWithWhite:0 alpha:0.25].CGColor; + [self.layer addSublayer:_highlightLayer]; + } + _highlightLayer.path = highlightPath.CGPath; + } else { + [_highlightLayer removeFromSuperlayer]; + _highlightLayer = nil; + } } - (NSNumber *)reactTagAtPoint:(CGPoint)point diff --git a/Libraries/Text/RCTText.xcodeproj/project.pbxproj b/Libraries/Text/RCTText.xcodeproj/project.pbxproj index b983615e3..3e9af6731 100644 --- a/Libraries/Text/RCTText.xcodeproj/project.pbxproj +++ b/Libraries/Text/RCTText.xcodeproj/project.pbxproj @@ -199,6 +199,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -238,6 +239,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/Vibration/RCTVibration.xcodeproj/project.pbxproj b/Libraries/Vibration/RCTVibration.xcodeproj/project.pbxproj index e4c3e4a2e..30613f874 100644 --- a/Libraries/Vibration/RCTVibration.xcodeproj/project.pbxproj +++ b/Libraries/Vibration/RCTVibration.xcodeproj/project.pbxproj @@ -151,6 +151,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -195,6 +196,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/Libraries/WebSocket/RCTWebSocket.xcodeproj/project.pbxproj b/Libraries/WebSocket/RCTWebSocket.xcodeproj/project.pbxproj index 817cf7fd8..e1862d581 100644 --- a/Libraries/WebSocket/RCTWebSocket.xcodeproj/project.pbxproj +++ b/Libraries/WebSocket/RCTWebSocket.xcodeproj/project.pbxproj @@ -152,6 +152,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -193,6 +194,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; diff --git a/React/React.xcodeproj/project.pbxproj b/React/React.xcodeproj/project.pbxproj index 2c551600b..70e4e4120 100644 --- a/React/React.xcodeproj/project.pbxproj +++ b/React/React.xcodeproj/project.pbxproj @@ -656,6 +656,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES; @@ -697,6 +698,7 @@ GCC_WARN_64_TO_32_BIT_CONVERSION = YES; GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR; GCC_WARN_INITIALIZER_NOT_FULLY_BRACKETED = YES; + GCC_WARN_SHADOW = YES; GCC_WARN_UNDECLARED_SELECTOR = YES; GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE; GCC_WARN_UNUSED_FUNCTION = YES;