Added support for editing tweaks on OS X.

- When targeting OS X, use FBTweakOSX build target

FBTweak/FBTweakEditorViewController.h

@@ -0,0 +1,13 @@
+//
+//  FBTweaksEditorViewController.h
+//  FBTweak
+//
+//  Created by Paulo Andrade on 13/12/14.
+//  Copyright (c) 2014 Facebook. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+
+@interface FBTweakEditorViewController : NSViewController
+
+@end

FBTweak/FBTweakEditorViewController.m

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+//
+//  FBTweaksEditorViewController.m
+//  FBTweak
+//
+//  Created by Paulo Andrade on 13/12/14.
+//  Copyright (c) 2014 Facebook. All rights reserved.
+//
+
+#import "FBTweakEditorViewController.h"
+#import "_FBTweakCategoriesViewController.h"
+#import "_FBTweakListViewController.h"
+
+@interface FBTweakEditorViewController () <_FBTweakCategoriesViewControllerDelegate>
+
+@property (nonatomic, strong) NSSplitViewController *splitViewController;
+
+@property (nonatomic, strong) NSSplitViewItem *categoriesSplitViewItem;
+@property (nonatomic, strong) _FBTweakCategoriesViewController *categoriesViewController;
+
+@property (nonatomic, strong) NSSplitViewItem *listSplitViewItem;
+@property (nonatomic, strong) _FBTweakListViewController *listViewController;
+
+
+
+@end
+
+@implementation FBTweakEditorViewController
+
+- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
+{
+    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
+    if (self) {
+        self.title = @"Tweaks";
+    }
+    return self;
+}
+
+- (void)loadView
+{
+    NSView *view = [[NSView alloc] initWithFrame:CGRectMake(0, 0, 640, 480)];
+
+    _FBTweakCategoriesViewController *categories = [[_FBTweakCategoriesViewController alloc] initWithStore:[FBTweakStore sharedInstance]];
+    categories.delegate = self;
+    _FBTweakListViewController *list = [[_FBTweakListViewController alloc] init];
+
+    NSSplitViewController *splitViewController = [[NSSplitViewController alloc] init];
+
+    // Categories
+    NSSplitViewItem *splitItem = [NSSplitViewItem splitViewItemWithViewController:categories];
+    NSView *splitItemView = [categories view];
+    splitItemView.translatesAutoresizingMaskIntoConstraints = NO;
+    NSLayoutConstraint *width = [NSLayoutConstraint constraintWithItem:splitItemView attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:150];
+    width.priority = NSLayoutPriorityDefaultLow;
+    width.active = YES;
+    splitItem.holdingPriority = NSLayoutPriorityDefaultLow+1;
+    splitItem.collapsed = NO;
+    splitItem.canCollapse = NO;
+    [splitViewController addSplitViewItem:splitItem];
+    self.categoriesSplitViewItem = splitItem;
+
+    // Collections
+    splitItem = [NSSplitViewItem splitViewItemWithViewController:list];
+    splitItemView = [list view];
+    splitItemView.translatesAutoresizingMaskIntoConstraints = NO;
+    width = [NSLayoutConstraint constraintWithItem:splitItemView attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:330];
+    width.priority = NSLayoutPriorityDefaultLow;
+    width.active = YES;
+    splitItem.holdingPriority = NSLayoutPriorityDefaultLow;
+    splitItem.collapsed = NO;
+    splitItem.canCollapse = NO;
+
+    [splitViewController addSplitViewItem:splitItem];
+    self.listSplitViewItem = splitItem;
+
+    NSView *splitView = [splitViewController view];
+    splitView.frame = view.bounds;
+    splitView.autoresizingMask = NSViewWidthSizable|NSViewHeightSizable;
+    [view addSubview:splitView];
+
+    self.categoriesViewController = categories;
+    self.listViewController = list;
+    self.splitViewController = splitViewController;
+
+    [self addChildViewController:self.splitViewController];
+
+    self.view = view;
+}
+
+- (void)viewWillAppear
+{
+    [super viewWillAppear];
+    self.listViewController.tweakCategory = [self.categoriesViewController selectedCategory];
+}
+
+#pragma mark - Delegates
+
+#pragma mark _FBTweakCategoriesViewControllerDelegate
+
+- (void)categoriesViewController:(_FBTweakCategoriesViewController *)controller didChangeSelection:(FBTweakCategory *)category
+{
+    self.listViewController.tweakCategory = category;
+}
+
+@end

FBTweak/_FBTweakCategoriesViewController.h

@@ -0,0 +1,34 @@
+//
+//  _FBTweakCategoriesViewController.h
+//  FBTweak
+//
+//  Created by Paulo Andrade on 13/12/14.
+//  Copyright (c) 2014 Facebook. All rights reserved.
+//
+
+#import <AppKit/AppKit.h>
+#import "FBTweakStore.h"
+#import "FBTweakCategory.h"
+
+@protocol _FBTweakCategoriesViewControllerDelegate;
+
+
+
+@interface _FBTweakCategoriesViewController : NSViewController
+
+- (instancetype)initWithStore:(FBTweakStore *)store;
+
+@property (nonatomic, weak) id<_FBTweakCategoriesViewControllerDelegate> delegate;
+
+- (FBTweakCategory *)selectedCategory;
+
+@end
+
+
+
+
+@protocol _FBTweakCategoriesViewControllerDelegate <NSObject>
+
+- (void)categoriesViewController:(_FBTweakCategoriesViewController *)controller didChangeSelection:(FBTweakCategory *)category;
+
+@end

FBTweak/_FBTweakCategoriesViewController.m

@@ -0,0 +1,123 @@
+//
+//  _FBTweakCategoriesViewController.m
+//  FBTweak
+//
+//  Created by Paulo Andrade on 13/12/14.
+//  Copyright (c) 2014 Facebook. All rights reserved.
+//
+
+#import "_FBTweakCategoriesViewController.h"
+#import "FBTweakStore.h"
+#import "FBTweakCategory.h"
+
+@interface _FBTweakCategoriesViewController () <NSOutlineViewDataSource, NSOutlineViewDelegate>
+
+
+@property (nonatomic, weak) NSOutlineView *outlineView;
+
+@end
+
+@implementation _FBTweakCategoriesViewController {
+    NSArray *_sortedCategories;
+}
+
+- (instancetype)initWithStore:(FBTweakStore *)store
+{
+    self = [super initWithNibName:@"" bundle:nil];
+    if (self) {
+        _sortedCategories = [store.tweakCategories sortedArrayUsingComparator:^(FBTweakCategory *a, FBTweakCategory *b) {
+            return [a.name localizedStandardCompare:b.name];
+        }];
+    }
+    return self;
+}
+
+- (void)loadView
+{
+    NSView *view = [[NSView alloc] initWithFrame:CGRectMake(0, 0, 300, 500)];
+
+    NSScrollView *scrollView = [[NSScrollView alloc] initWithFrame:view.bounds];
+    scrollView.autoresizingMask = NSViewWidthSizable|NSViewHeightSizable;
+
+    NSOutlineView *outlineView = [[NSOutlineView alloc] initWithFrame:scrollView.bounds];
+    outlineView.autoresizingMask = NSViewWidthSizable|NSViewHeightSizable;
+    outlineView.translatesAutoresizingMaskIntoConstraints = NO;
+    outlineView.dataSource = self;
+    outlineView.delegate = self;
+    outlineView.allowsEmptySelection = NO;
+    outlineView.allowsMultipleSelection = NO;
+    outlineView.selectionHighlightStyle = NSTableViewSelectionHighlightStyleSourceList;
+
+    NSTableColumn *column = [[NSTableColumn alloc] initWithIdentifier:@"Categories"];
+    column.title = @"Categories";
+    column.width = CGRectGetWidth(view.frame);
+    column.editable = NO;
+    [outlineView addTableColumn:column];
+
+    scrollView.documentView = outlineView;
+    scrollView.autoresizesSubviews = YES;
+
+    [view addSubview:scrollView];
+
+    [view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[outlineView]|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(outlineView)]];
+    [view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[outlineView]|" options:0 metrics:nil views:NSDictionaryOfVariableBindings(outlineView)]];
+
+    self.outlineView = outlineView;
+
+    self.view = view;
+}
+
+
+- (FBTweakCategory *)selectedCategory
+{
+    return _sortedCategories[[self.outlineView selectedRow]];
+}
+
+- (void)viewDidAppear
+{
+    [super viewDidAppear];
+    [self.outlineView reloadData];
+}
+
+#pragma mark - NSOutlineView
+
+#pragma mark datasource
+
+- (NSInteger)outlineView:(NSOutlineView *)outlineView numberOfChildrenOfItem:(id)item
+{
+    return (item == nil) ? [_sortedCategories count] : 0;
+}
+
+- (id)outlineView:(NSOutlineView *)outlineView child:(NSInteger)index ofItem:(id)item
+{
+    return _sortedCategories[index];
+}
+
+- (BOOL)outlineView:(NSOutlineView *)outlineView isItemExpandable:(id)item
+{
+    return NO;
+}
+
+
+#pragma mark delegate
+
+- (NSView *)outlineView:(NSOutlineView *)outlineView viewForTableColumn:(NSTableColumn *)tableColumn item:(FBTweakCategory *)category
+{
+    NSTableCellView *cellView = [[NSTableCellView alloc] initWithFrame:CGRectMake(0, 0, 100, 50)];
+    NSTextField *textField = [[NSTextField alloc] initWithFrame:cellView.bounds];
+    textField.autoresizingMask = NSViewWidthSizable|NSViewHeightSizable;
+    textField.stringValue = category.name;
+    textField.bordered = NO;
+    textField.drawsBackground = NO;
+    textField.focusRingType = NSFocusRingTypeNone;
+    [cellView addSubview:textField];
+    cellView.textField = textField;
+    return cellView;
+}
+
+- (void)outlineViewSelectionDidChange:(NSNotification *)notification
+{
+    [self.delegate categoriesViewController:self didChangeSelection:[self selectedCategory]];
+}
+
+@end

FBTweak/_FBTweakListViewController.h

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+//
+//  _FBTweakListViewController.h
+//  FBTweak
+//
+//  Created by Paulo Andrade on 14/12/14.
+//  Copyright (c) 2014 Facebook. All rights reserved.
+//
+
+#import <Cocoa/Cocoa.h>
+#import "FBTweakCategory.h"
+
+@interface _FBTweakListViewController : NSViewController
+
+@property (nonatomic, strong) FBTweakCategory *tweakCategory;
+
+@end