[Author: dmaclach]

Turns on the undeclared-selector warning. This may cause builds to fail if they are using
our configs. Also cleaned up some whitespace issues.

R=thomasvl
DELTA=94  (71 added, 22 deleted, 1 changed)

2 files changed, 10 insertions, 4 deletions

diff --git a/iPhone/GTMUIView+SubtreeDescription.h b/iPhone/GTMUIView+SubtreeDescription.h
index 1e714ed..627298a 100644
--- a/iPhone/GTMUIView+SubtreeDescription.h
+++ b/iPhone/GTMUIView+SubtreeDescription.h
@@ -44,4 +44,10 @@
 
 @end
 
+@protocol GTMUIViewSubtreeDescription
+// A UIView can implement this and it can add it's own custom description
+// in gtm_subtreeDescriptionLine.
+- (NSString *)myViewDescriptionLine;
+@end
+
 #endif  // DEBUG
diff --git a/iPhone/GTMUIView+SubtreeDescription.m b/iPhone/GTMUIView+SubtreeDescription.m
index bae0e2f..519aed0 100644
--- a/iPhone/GTMUIView+SubtreeDescription.m
+++ b/iPhone/GTMUIView+SubtreeDescription.m
@@ -31,7 +31,6 @@ static void AppendLabelFloat(NSMutableString *s, NSString *label, float f) {
   }
 }
 
-
 static NSMutableString *SublayerDescriptionLine(CALayer *layer) {
   NSMutableString *result = [NSMutableString string];
   [result appendFormat:@"%@ %p {", [layer class], layer];
@@ -60,7 +59,7 @@ static NSMutableString *SublayerDescriptionAtLevel(CALayer *layer, int level) {
   [result appendString:SublayerDescriptionLine(layer)];
   // |sublayers| is defined in the QuartzCore framework, which isn't guaranteed
   // to be linked to this program. (So we don't include the header.)
-  NSArray *layers = [layer performSelector:@selector(sublayers)];
+  NSArray *layers = [layer performSelector:NSSelectorFromString(@"sublayers")];
   for (CALayer *l in layers) {
     [result appendString:SublayerDescriptionAtLevel(l, level+1)];
   }
@@ -127,11 +126,12 @@ static NSMutableString *SublayerDescriptionAtLevel(CALayer *layer, int level) {
 // for debugging dump the layer hierarchy, frames and isHidden.
 - (NSString *)sublayersDescription {
   CALayer *layer = [self layer];
-  if (![layer respondsToSelector:@selector(sublayers)]) {
+  SEL sublayers = NSSelectorFromString(@"sublayers");
+  if (![layer respondsToSelector:sublayers]) {
     return @"*** Sorry: This app is not linked with the QuartzCore framework.";
   }
   NSMutableString *result = SublayerDescriptionLine(layer);
-  NSArray *layers = [layer performSelector:@selector(sublayers)];
+  NSArray *layers = [layer performSelector:sublayers];
   for (CALayer *l in layers) {
     [result appendString:SublayerDescriptionAtLevel(l, 1)];
   }