Added support for older OS X releases back to 10.6 included.

Apart from turning off Auto Layout for the Demo project, the only
thing remaining was several __weak qualifiers to prevent retain
cycles in blocks. I have replaced them with __unsafe_unretained
since __weak is not supported on 10.6. There should be no safety
concerns here, since we are certain the pointers will remain valid.

4 files changed, 24 insertions, 10 deletions

diff --git a/CHANGES b/CHANGES
index 8237ae6..115c78f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+Unreleased yet
+    - Added support for older OS X versions down to 10.6 included.
+
 2.0.1 2015/1/9
     - Trivial Podspec fix.
 
diff --git a/Demo/MainMenu.xib b/Demo/MainMenu.xib
index a04814d..a4bf180 100644
--- a/Demo/MainMenu.xib
+++ b/Demo/MainMenu.xib
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="6254" systemVersion="14B25" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
+<document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="6254" systemVersion="14B25" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none">
     <dependencies>
         <deployment identifier="macosx"/>
         <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="6254"/>
@@ -655,19 +655,22 @@
                 <rect key="frame" x="0.0" y="0.0" width="393" height="129"/>
                 <autoresizingMask key="autoresizingMask"/>
                 <subviews>
-                    <customView fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="536" customClass="MASShortcutView">
+                    <customView id="536" customClass="MASShortcutView">
                         <rect key="frame" x="142" y="90" width="158" height="19"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                     </customView>
-                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="PG0-jh-Onh">
+                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" id="PG0-jh-Onh">
                         <rect key="frame" x="18" y="92" width="111" height="17"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                         <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" alignment="right" title="Custom shortcut:" id="85u-1A-n7H">
                             <font key="font" metaFont="system"/>
                             <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
                             <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
                         </textFieldCell>
                     </textField>
-                    <button fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="zCi-ki-Uuh">
+                    <button id="zCi-ki-Uuh">
                         <rect key="frame" x="140" y="63" width="169" height="18"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                         <buttonCell key="cell" type="check" title="Enable custom shortcut" bezelStyle="regularSquare" imagePosition="left" state="on" inset="2" id="Y47-p3-sDa">
                             <behavior key="behavior" changeContents="YES" doesNotDimImage="YES" lightByContents="YES"/>
                             <font key="font" metaFont="system"/>
@@ -676,16 +679,18 @@
                             <binding destination="rCO-Ve-DT5" name="value" keyPath="values.customShortcutEnabled" id="VjS-3V-VdA"/>
                         </connections>
                     </button>
-                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="KnS-ut-phz">
+                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" id="KnS-ut-phz">
                         <rect key="frame" x="18" y="65" width="111" height="17"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                         <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" alignment="right" title="Options:" id="cUE-gA-heG">
                             <font key="font" metaFont="system"/>
                             <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
                             <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
                         </textFieldCell>
                     </textField>
-                    <button fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="F4r-KM-wn9">
+                    <button id="F4r-KM-wn9">
                         <rect key="frame" x="140" y="43" width="235" height="18"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                         <buttonCell key="cell" type="check" title="Enable hard-coded shortcut (⌘F2)" bezelStyle="regularSquare" imagePosition="left" state="on" inset="2" id="7gv-jN-44g">
                             <behavior key="behavior" changeContents="YES" doesNotDimImage="YES" lightByContents="YES"/>
                             <font key="font" metaFont="system"/>
@@ -694,16 +699,18 @@
                             <binding destination="rCO-Ve-DT5" name="value" keyPath="values.hardcodedShortcutEnabled" id="dlZ-si-HeN"/>
                         </connections>
                     </button>
-                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="9fB-XS-8pK">
+                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" id="9fB-XS-8pK">
                         <rect key="frame" x="18" y="20" width="111" height="17"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                         <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" alignment="right" title="Feedback:" id="Zbz-mV-NDc">
                             <font key="font" metaFont="system"/>
                             <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
                             <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
                         </textFieldCell>
                     </textField>
-                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="Aso-dH-W8I">
+                    <textField horizontalHuggingPriority="251" verticalHuggingPriority="750" id="Aso-dH-W8I">
                         <rect key="frame" x="140" y="20" width="211" height="17"/>
+                        <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                         <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" sendsActionOnEndEditing="YES" alignment="left" placeholderString="Press a shortcut to see feedback" id="Ckx-v7-e6x">
                             <font key="font" metaFont="system"/>
                             <color key="textColor" red="0.37647062540054321" green="0.85098046064376831" blue="0.17647059261798859" alpha="1" colorSpace="deviceRGB"/>
diff --git a/Framework/MASShortcutView.m b/Framework/MASShortcutView.m
index aace67e..74e14de 100644
--- a/Framework/MASShortcutView.m
+++ b/Framework/MASShortcutView.m
@@ -369,7 +369,7 @@ void *kUserDataHint = &kUserDataHint;
     
     static id eventMonitor = nil;
     if (shouldActivate) {
-        __weak MASShortcutView *weakSelf = self;
+        __unsafe_unretained MASShortcutView *weakSelf = self;
         NSEventMask eventMask = (NSKeyDownMask | NSFlagsChangedMask);
         eventMonitor = [NSEvent addLocalMonitorForEventsMatchingMask:eventMask handler:^(NSEvent *event) {
 
@@ -450,7 +450,7 @@ void *kUserDataHint = &kUserDataHint;
     static id observer = nil;
     NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
     if (shouldActivate) {
-        __weak MASShortcutView *weakSelf = self;
+        __unsafe_unretained MASShortcutView *weakSelf = self;
         observer = [notificationCenter addObserverForName:NSWindowDidResignKeyNotification object:self.window
                                                 queue:[NSOperationQueue mainQueue] usingBlock:^(NSNotification *notification) {
                                                     weakSelf.recording = NO;
diff --git a/MASShortcut.xcodeproj/project.pbxproj b/MASShortcut.xcodeproj/project.pbxproj
index 2ab08a8..41b78d1 100644
--- a/MASShortcut.xcodeproj/project.pbxproj
+++ b/MASShortcut.xcodeproj/project.pbxproj
@@ -516,6 +516,7 @@
 				GCC_PREFIX_HEADER = Framework/Prefix.pch;
 				INFOPLIST_FILE = Framework/Info.plist;
 				INSTALL_PATH = "@executable_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				WRAPPER_EXTENSION = framework;
@@ -533,6 +534,7 @@
 				GCC_PREFIX_HEADER = Framework/Prefix.pch;
 				INFOPLIST_FILE = Framework/Info.plist;
 				INSTALL_PATH = "@executable_path/../Frameworks";
+				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				WRAPPER_EXTENSION = framework;
@@ -551,6 +553,7 @@
 					"$(inherited)",
 				);
 				INFOPLIST_FILE = Demo/Info.plist;
+				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;
 			};
@@ -564,6 +567,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = Demo/Prefix.pch;
 				INFOPLIST_FILE = Demo/Info.plist;
+				MACOSX_DEPLOYMENT_TARGET = 10.6;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;
 			};