Sharing on Facebook, Twitter and Google+

[FIXED]     Font of navbar.
[FIXED]     A few compile fixes.
[IMPROVED]  Made properties nonatomic.
[ADDED]     Support for facebook, twitter and google+ sharing.

External/google-plus-ios-sdk/OpenSource/GTL/GTLDefines.h

@@ -0,0 +1,128 @@
+/* Copyright (c) 2011 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+//
+// GTLDefines.h
+//
+
+// Ensure Apple's conditionals we depend on are defined.
+#import <TargetConditionals.h>
+#import <AvailabilityMacros.h>
+
+//
+// The developer may choose to define these in the project:
+//
+//   #define GTL_TARGET_NAMESPACE Xxx  // preface all GTL class names with Xxx (recommended for building plug-ins)
+//   #define GTL_FOUNDATION_ONLY 1     // builds without AppKit or Carbon (default for iPhone builds)
+//   #define STRIP_GTM_FETCH_LOGGING 1 // omit http logging code (default for iPhone release builds)
+//
+// Mac developers may find GTL_SIMPLE_DESCRIPTIONS and STRIP_GTM_FETCH_LOGGING useful for
+// reducing code size.
+//
+
+// Define later OS versions when building on earlier versions
+#ifdef MAC_OS_X_VERSION_10_0
+  #ifndef MAC_OS_X_VERSION_10_6
+    #define MAC_OS_X_VERSION_10_6 1060
+  #endif
+#endif
+
+
+#ifdef GTL_TARGET_NAMESPACE
+// prefix all GTL class names with GTL_TARGET_NAMESPACE for this target
+  #import "GTLTargetNamespace.h"
+#endif
+
+// Provide a common definition for externing constants/functions
+#if defined(__cplusplus)
+  #define GTL_EXTERN extern "C"
+#else
+  #define GTL_EXTERN extern
+#endif
+
+#if TARGET_OS_IPHONE // iPhone SDK
+
+  #define GTL_IPHONE 1
+
+#endif
+
+#if GTL_IPHONE
+
+  #define GTL_FOUNDATION_ONLY 1
+
+#endif
+
+//
+// GTL_ASSERT is like NSAssert, but takes a variable number of arguments:
+//
+//     GTL_ASSERT(condition, @"Problem in argument %@", argStr);
+//
+// GTL_DEBUG_ASSERT is similar, but compiles in only for debug builds
+//
+
+#ifndef GTL_ASSERT
+  // we directly invoke the NSAssert handler so we can pass on the varargs
+  #if !defined(NS_BLOCK_ASSERTIONS)
+    #define GTL_ASSERT(condition, ...)                                       \
+      do {                                                                     \
+        if (!(condition)) {                                                    \
+          [[NSAssertionHandler currentHandler]                                 \
+              handleFailureInFunction:[NSString stringWithUTF8String:__PRETTY_FUNCTION__] \
+                                 file:[NSString stringWithUTF8String:__FILE__] \
+                           lineNumber:__LINE__                                 \
+                          description:__VA_ARGS__];                            \
+        }                                                                      \
+      } while(0)
+  #else
+    #define GTL_ASSERT(condition, ...) do { } while (0)
+  #endif // !defined(NS_BLOCK_ASSERTIONS)
+#endif // GTL_ASSERT
+
+#ifndef GTL_DEBUG_ASSERT
+  #if DEBUG
+    #define GTL_DEBUG_ASSERT(condition, ...) GTL_ASSERT(condition, __VA_ARGS__)
+  #else
+    #define GTL_DEBUG_ASSERT(condition, ...) do { } while (0)
+  #endif
+#endif
+
+#ifndef GTL_DEBUG_LOG
+  #if DEBUG
+    #define GTL_DEBUG_LOG(...) NSLog(__VA_ARGS__)
+  #else
+    #define GTL_DEBUG_LOG(...) do { } while (0)
+  #endif
+#endif
+
+#ifndef STRIP_GTM_FETCH_LOGGING
+  #if GTL_IPHONE && !DEBUG
+    #define STRIP_GTM_FETCH_LOGGING 1
+  #else
+    #define STRIP_GTM_FETCH_LOGGING 0
+  #endif
+#endif
+
+// Some support for advanced clang static analysis functionality
+// See http://clang-analyzer.llvm.org/annotations.html
+#ifndef __has_feature      // Optional.
+  #define __has_feature(x) 0 // Compatibility with non-clang compilers.
+#endif
+#ifndef NS_RETURNS_NOT_RETAINED
+  #if __has_feature(attribute_ns_returns_not_retained)
+    #define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained))
+  #else
+    #define NS_RETURNS_NOT_RETAINED
+  #endif
+#endif