Tools/MiniBrowser/mac/SettingsController.m - WebKit - Git at Google

 /*
  * Copyright (C) 2014 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */

 #import "SettingsController.h"

 #import "AppDelegate.h"
 #import "BrowserWindowController.h"

 static NSString * const defaultURL = @"http://www.webkit.org/";
 static NSString * const DefaultURLPreferenceKey = @"DefaultURL";

 static NSString * const UseWebKit2ByDefaultPreferenceKey = @"UseWebKit2ByDefault";
 static NSString * const LayerBordersVisiblePreferenceKey = @"LayerBordersVisible";
 static NSString * const SimpleLineLayoutDebugBordersEnabledPreferenceKey = @"SimpleLineLayoutDebugBordersEnabled";
 static NSString * const TiledScrollingIndicatorVisiblePreferenceKey = @"TiledScrollingIndicatorVisible";

 static NSString * const NonFastScrollableRegionOverlayVisiblePreferenceKey = @"NonFastScrollableRegionOverlayVisible";
 static NSString * const WheelEventHandlerRegionOverlayVisiblePreferenceKey = @"WheelEventHandlerRegionOverlayVisible";

 static NSString * const UseTransparentWindowsPreferenceKey = @"UseTransparentWindows";
 static NSString * const UsePaginatedModePreferenceKey = @"UsePaginatedMode";
 static NSString * const EnableSubPixelCSSOMMetricsPreferenceKey = @"EnableSubPixelCSSOMMetrics";

 // This default name intentionally overlaps with the key that WebKit2 checks when creating a view.
 static NSString * const UseRemoteLayerTreeDrawingAreaPreferenceKey = @"WebKit2UseRemoteLayerTreeDrawingArea";

 static NSString * const PerWindowWebProcessesDisabledKey = @"PerWindowWebProcessesDisabled";

 typedef NS_ENUM(NSInteger, DebugOverylayMenuItemTag) {
     NonFastScrollableRegionOverlayTag = 100,
     WheelEventHandlerRegionOverlayTag
 };

 @implementation SettingsController

 @synthesize menu=_menu;

 + (instancetype)shared
 {
     static SettingsController *sharedSettingsController;
     static dispatch_once_t onceToken;
     dispatch_once(&onceToken, ^{
         sharedSettingsController = [[super alloc] init];
     });

     return sharedSettingsController;
 }

 - (NSMenu *)menu
 {
     if (!_menu)
         [self _populateMenu];

     return _menu;
 }

 - (void)_addItemWithTitle:(NSString *)title action:(SEL)action indented:(BOOL)indented
 {
     NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:title action:action keyEquivalent:@""];
     [item setTarget:self];
     if (indented)
         [item setIndentationLevel:1];
     [_menu addItem:item];
     [item release];
 }

 - (void)_addHeaderWithTitle:(NSString *)title
 {
     [_menu addItem:[NSMenuItem separatorItem]];
     [_menu addItem:[[[NSMenuItem alloc] initWithTitle:title action:nil keyEquivalent:@""] autorelease]];
 }

 - (void)_populateMenu
 {
     _menu = [[NSMenu alloc] initWithTitle:@"Settings"];

     [self _addItemWithTitle:@"Use WebKit2 By Default" action:@selector(toggleUseWebKit2ByDefault:) indented:NO];

     [_menu addItem:[NSMenuItem separatorItem]];

     [self _addItemWithTitle:@"Use Transparent Windows" action:@selector(toggleUseTransparentWindows:) indented:NO];
     [self _addItemWithTitle:@"Use Paginated Mode" action:@selector(toggleUsePaginatedMode:) indented:NO];
     [self _addItemWithTitle:@"Show Layer Borders" action:@selector(toggleShowLayerBorders:) indented:NO];
     [self _addItemWithTitle:@"Show Simple Line Layout Borders" action:@selector(toggleSimpleLineLayoutDebugBordersEnabled:) indented:NO];

     [self _addHeaderWithTitle:@"WebKit2-only Settings"];

     [self _addItemWithTitle:@"Show Tiled Scrolling Indicator" action:@selector(toggleShowTiledScrollingIndicator:) indented:YES];
     [self _addItemWithTitle:@"Use UI-Side Compositing" action:@selector(toggleUseUISideCompositing:) indented:YES];
     [self _addItemWithTitle:@"Disable Per-Window Web Processes" action:@selector(togglePerWindowWebProcessesDisabled:) indented:YES];

     NSMenuItem *debugOverlaysSubmenuItem = [[NSMenuItem alloc] initWithTitle:@"Debug Overlays" action:nil keyEquivalent:@""];
     NSMenu *debugOverlaysMenu = [[NSMenu alloc] initWithTitle:@"Debug Overlays"];
     [debugOverlaysSubmenuItem setSubmenu:debugOverlaysMenu];

     NSMenuItem *nonFastScrollableRegionItem = [[NSMenuItem alloc] initWithTitle:@"Non-fast Scrollable Region" action:@selector(toggleDebugOverlay:) keyEquivalent:@""];
     [nonFastScrollableRegionItem setTag:NonFastScrollableRegionOverlayTag];
     [nonFastScrollableRegionItem setTarget:self];
     [debugOverlaysMenu addItem:[nonFastScrollableRegionItem autorelease]];

     NSMenuItem *wheelEventHandlerRegionItem = [[NSMenuItem alloc] initWithTitle:@"Wheel Event Handler Region" action:@selector(toggleDebugOverlay:) keyEquivalent:@""];
     [wheelEventHandlerRegionItem setTag:WheelEventHandlerRegionOverlayTag];
     [wheelEventHandlerRegionItem setTarget:self];
     [debugOverlaysMenu addItem:[wheelEventHandlerRegionItem autorelease]];
     [debugOverlaysMenu release];

     [_menu addItem:debugOverlaysSubmenuItem];
     [debugOverlaysSubmenuItem release];

     [self _addHeaderWithTitle:@"WebKit1-only Settings"];
     [self _addItemWithTitle:@"Enable Subpixel CSSOM Metrics" action:@selector(toggleEnableSubPixelCSSOMMetrics:) indented:YES];
 }

 - (BOOL)validateMenuItem:(NSMenuItem *)menuItem
 {
     SEL action = [menuItem action];

     if (action == @selector(toggleUseWebKit2ByDefault:))
         [menuItem setState:[self useWebKit2ByDefault] ? NSOnState : NSOffState];
     else if (action == @selector(toggleUseTransparentWindows:))
         [menuItem setState:[self useTransparentWindows] ? NSOnState : NSOffState];
     else if (action == @selector(toggleUsePaginatedMode:))
         [menuItem setState:[self usePaginatedMode] ? NSOnState : NSOffState];
     else if (action == @selector(toggleShowLayerBorders:))
         [menuItem setState:[self layerBordersVisible] ? NSOnState : NSOffState];
     else if (action == @selector(toggleSimpleLineLayoutDebugBordersEnabled:))
         [menuItem setState:[self simpleLineLayoutDebugBordersEnabled] ? NSOnState : NSOffState];
     else if (action == @selector(toggleShowTiledScrollingIndicator:))
         [menuItem setState:[self tiledScrollingIndicatorVisible] ? NSOnState : NSOffState];
     else if (action == @selector(toggleUseUISideCompositing:))
         [menuItem setState:[self useUISideCompositing] ? NSOnState : NSOffState];
     else if (action == @selector(togglePerWindowWebProcessesDisabled:))
         [menuItem setState:[self perWindowWebProcessesDisabled] ? NSOnState : NSOffState];
     else if (action == @selector(toggleEnableSubPixelCSSOMMetrics:))
         [menuItem setState:[self subPixelCSSOMMetricsEnabled] ? NSOnState : NSOffState];
     else if (action == @selector(toggleDebugOverlay:))
         [menuItem setState:[self debugOverlayVisible:menuItem] ? NSOnState : NSOffState];

     return YES;
 }

 - (void)_toggleBooleanDefault:(NSString *)defaultName
 {
     NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
     [defaults setBool:![defaults boolForKey:defaultName] forKey:defaultName];

     [(BrowserAppDelegate *)[[NSApplication sharedApplication] delegate] didChangeSettings];
 }

 - (void)toggleUseWebKit2ByDefault:(id)sender
 {
     [self _toggleBooleanDefault:UseWebKit2ByDefaultPreferenceKey];
 }

 - (BOOL)useWebKit2ByDefault
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:UseWebKit2ByDefaultPreferenceKey];
 }

 - (void)toggleUseTransparentWindows:(id)sender
 {
     [self _toggleBooleanDefault:UseTransparentWindowsPreferenceKey];
 }

 - (BOOL)useTransparentWindows
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:UseTransparentWindowsPreferenceKey];
 }

 - (void)toggleUsePaginatedMode:(id)sender
 {
     [self _toggleBooleanDefault:UsePaginatedModePreferenceKey];
 }

 - (BOOL)usePaginatedMode
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:UsePaginatedModePreferenceKey];
 }

 - (void)toggleUseUISideCompositing:(id)sender
 {
     [self _toggleBooleanDefault:UseRemoteLayerTreeDrawingAreaPreferenceKey];
 }

 - (BOOL)useUISideCompositing
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:UseRemoteLayerTreeDrawingAreaPreferenceKey];
 }

 - (void)togglePerWindowWebProcessesDisabled:(id)sender
 {
     NSAlert *alert = [[NSAlert alloc] init];
     [alert setMessageText:self.perWindowWebProcessesDisabled ? @"Are you sure you want to switch to per-window web processes?" : @"Are you sure you want to switch to a single web process?"];
     [alert setInformativeText:@"This requires quitting and relaunching MiniBrowser. I'll do the quitting. You will have to do the relaunching."];
     [alert addButtonWithTitle:@"Switch and Quit"];
     [alert addButtonWithTitle:@"Cancel"];

     if ([alert runModal] != NSAlertFirstButtonReturn)
         return;

     [self _toggleBooleanDefault:PerWindowWebProcessesDisabledKey];
     [NSApp terminate:self];
 }

 - (BOOL)perWindowWebProcessesDisabled
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:PerWindowWebProcessesDisabledKey];
 }

 - (void)toggleShowLayerBorders:(id)sender
 {
     [self _toggleBooleanDefault:LayerBordersVisiblePreferenceKey];
 }

 - (BOOL)layerBordersVisible
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:LayerBordersVisiblePreferenceKey];
 }

 - (void)toggleSimpleLineLayoutDebugBordersEnabled:(id)sender
 {
     [self _toggleBooleanDefault:SimpleLineLayoutDebugBordersEnabledPreferenceKey];
 }

 - (BOOL)simpleLineLayoutDebugBordersEnabled
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:SimpleLineLayoutDebugBordersEnabledPreferenceKey];
 }

 - (void)toggleShowTiledScrollingIndicator:(id)sender
 {
     [self _toggleBooleanDefault:TiledScrollingIndicatorVisiblePreferenceKey];
 }

 - (BOOL)tiledScrollingIndicatorVisible
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:TiledScrollingIndicatorVisiblePreferenceKey];
 }

 - (void)toggleEnableSubPixelCSSOMMetrics:(id)sender
 {
     [self _toggleBooleanDefault:EnableSubPixelCSSOMMetricsPreferenceKey];
 }

 - (BOOL)subPixelCSSOMMetricsEnabled
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:EnableSubPixelCSSOMMetricsPreferenceKey];
 }

 - (BOOL)nonFastScrollableRegionOverlayVisible
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:NonFastScrollableRegionOverlayVisiblePreferenceKey];
 }

 - (BOOL)wheelEventHandlerRegionOverlayVisible
 {
     return [[NSUserDefaults standardUserDefaults] boolForKey:WheelEventHandlerRegionOverlayVisiblePreferenceKey];
 }

 - (NSString *)preferenceKeyForRegionOverlayTag:(NSUInteger)tag
 {
     switch (tag) {
     case NonFastScrollableRegionOverlayTag:
         return NonFastScrollableRegionOverlayVisiblePreferenceKey;

     case WheelEventHandlerRegionOverlayTag:
         return WheelEventHandlerRegionOverlayVisiblePreferenceKey;
     }
     return nil;
 }

 - (void)toggleDebugOverlay:(id)sender
 {
     NSString *preferenceKey = [self preferenceKeyForRegionOverlayTag:[sender tag]];
     if (preferenceKey)
         [self _toggleBooleanDefault:preferenceKey];
 }

 - (BOOL)debugOverlayVisible:(NSMenuItem *)menuItem
 {
     NSString *preferenceKey = [self preferenceKeyForRegionOverlayTag:[menuItem tag]];
     if (preferenceKey)
         return [[NSUserDefaults standardUserDefaults] boolForKey:preferenceKey];

     return NO;
 }

 - (NSString *)defaultURL
 {
     NSString *customDefaultURL = [[NSUserDefaults standardUserDefaults] stringForKey:DefaultURLPreferenceKey];
     if (customDefaultURL)
         return customDefaultURL;
     return defaultURL;
 }

 @end
	/*
	* Copyright (C) 2014 Apple Inc. All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
	* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
	* THE POSSIBILITY OF SUCH DAMAGE.
	*/

	#import "SettingsController.h"

	#import "AppDelegate.h"
	#import "BrowserWindowController.h"

	static NSString * const defaultURL = @"http://www.webkit.org/";
	static NSString * const DefaultURLPreferenceKey = @"DefaultURL";

	static NSString * const UseWebKit2ByDefaultPreferenceKey = @"UseWebKit2ByDefault";
	static NSString * const LayerBordersVisiblePreferenceKey = @"LayerBordersVisible";
	static NSString * const SimpleLineLayoutDebugBordersEnabledPreferenceKey = @"SimpleLineLayoutDebugBordersEnabled";
	static NSString * const TiledScrollingIndicatorVisiblePreferenceKey = @"TiledScrollingIndicatorVisible";

	static NSString * const NonFastScrollableRegionOverlayVisiblePreferenceKey = @"NonFastScrollableRegionOverlayVisible";
	static NSString * const WheelEventHandlerRegionOverlayVisiblePreferenceKey = @"WheelEventHandlerRegionOverlayVisible";

	static NSString * const UseTransparentWindowsPreferenceKey = @"UseTransparentWindows";
	static NSString * const UsePaginatedModePreferenceKey = @"UsePaginatedMode";
	static NSString * const EnableSubPixelCSSOMMetricsPreferenceKey = @"EnableSubPixelCSSOMMetrics";

	// This default name intentionally overlaps with the key that WebKit2 checks when creating a view.
	static NSString * const UseRemoteLayerTreeDrawingAreaPreferenceKey = @"WebKit2UseRemoteLayerTreeDrawingArea";

	static NSString * const PerWindowWebProcessesDisabledKey = @"PerWindowWebProcessesDisabled";

	typedef NS_ENUM(NSInteger, DebugOverylayMenuItemTag) {
	NonFastScrollableRegionOverlayTag = 100,
	WheelEventHandlerRegionOverlayTag
	};

	@implementation SettingsController

	@synthesize menu=_menu;

	+ (instancetype)shared
	{
	static SettingsController *sharedSettingsController;
	static dispatch_once_t onceToken;
	dispatch_once(&onceToken, ^{
	sharedSettingsController = [[super alloc] init];
	});

	return sharedSettingsController;
	}

	- (NSMenu *)menu
	{
	if (!_menu)
	[self _populateMenu];

	return _menu;
	}

	- (void)_addItemWithTitle:(NSString *)title action:(SEL)action indented:(BOOL)indented
	{
	NSMenuItem *item = [[NSMenuItem alloc] initWithTitle:title action:action keyEquivalent:@""];
	[item setTarget:self];
	if (indented)
	[item setIndentationLevel:1];
	[_menu addItem:item];
	[item release];
	}

	- (void)_addHeaderWithTitle:(NSString *)title
	{
	[_menu addItem:[NSMenuItem separatorItem]];
	[_menu addItem:[[[NSMenuItem alloc] initWithTitle:title action:nil keyEquivalent:@""] autorelease]];
	}

	- (void)_populateMenu
	{
	_menu = [[NSMenu alloc] initWithTitle:@"Settings"];

	[self _addItemWithTitle:@"Use WebKit2 By Default" action:@selector(toggleUseWebKit2ByDefault:) indented:NO];

	[_menu addItem:[NSMenuItem separatorItem]];

	[self _addItemWithTitle:@"Use Transparent Windows" action:@selector(toggleUseTransparentWindows:) indented:NO];
	[self _addItemWithTitle:@"Use Paginated Mode" action:@selector(toggleUsePaginatedMode:) indented:NO];
	[self _addItemWithTitle:@"Show Layer Borders" action:@selector(toggleShowLayerBorders:) indented:NO];
	[self _addItemWithTitle:@"Show Simple Line Layout Borders" action:@selector(toggleSimpleLineLayoutDebugBordersEnabled:) indented:NO];

	[self _addHeaderWithTitle:@"WebKit2-only Settings"];

	[self _addItemWithTitle:@"Show Tiled Scrolling Indicator" action:@selector(toggleShowTiledScrollingIndicator:) indented:YES];
	[self _addItemWithTitle:@"Use UI-Side Compositing" action:@selector(toggleUseUISideCompositing:) indented:YES];
	[self _addItemWithTitle:@"Disable Per-Window Web Processes" action:@selector(togglePerWindowWebProcessesDisabled:) indented:YES];

	NSMenuItem *debugOverlaysSubmenuItem = [[NSMenuItem alloc] initWithTitle:@"Debug Overlays" action:nil keyEquivalent:@""];
	NSMenu *debugOverlaysMenu = [[NSMenu alloc] initWithTitle:@"Debug Overlays"];
	[debugOverlaysSubmenuItem setSubmenu:debugOverlaysMenu];

	NSMenuItem *nonFastScrollableRegionItem = [[NSMenuItem alloc] initWithTitle:@"Non-fast Scrollable Region" action:@selector(toggleDebugOverlay:) keyEquivalent:@""];
	[nonFastScrollableRegionItem setTag:NonFastScrollableRegionOverlayTag];
	[nonFastScrollableRegionItem setTarget:self];
	[debugOverlaysMenu addItem:[nonFastScrollableRegionItem autorelease]];

	NSMenuItem *wheelEventHandlerRegionItem = [[NSMenuItem alloc] initWithTitle:@"Wheel Event Handler Region" action:@selector(toggleDebugOverlay:) keyEquivalent:@""];
	[wheelEventHandlerRegionItem setTag:WheelEventHandlerRegionOverlayTag];
	[wheelEventHandlerRegionItem setTarget:self];
	[debugOverlaysMenu addItem:[wheelEventHandlerRegionItem autorelease]];
	[debugOverlaysMenu release];

	[_menu addItem:debugOverlaysSubmenuItem];
	[debugOverlaysSubmenuItem release];

	[self _addHeaderWithTitle:@"WebKit1-only Settings"];
	[self _addItemWithTitle:@"Enable Subpixel CSSOM Metrics" action:@selector(toggleEnableSubPixelCSSOMMetrics:) indented:YES];
	}

	- (BOOL)validateMenuItem:(NSMenuItem *)menuItem
	{
	SEL action = [menuItem action];

	if (action == @selector(toggleUseWebKit2ByDefault:))
	[menuItem setState:[self useWebKit2ByDefault] ? NSOnState : NSOffState];
	else if (action == @selector(toggleUseTransparentWindows:))
	[menuItem setState:[self useTransparentWindows] ? NSOnState : NSOffState];
	else if (action == @selector(toggleUsePaginatedMode:))
	[menuItem setState:[self usePaginatedMode] ? NSOnState : NSOffState];
	else if (action == @selector(toggleShowLayerBorders:))
	[menuItem setState:[self layerBordersVisible] ? NSOnState : NSOffState];
	else if (action == @selector(toggleSimpleLineLayoutDebugBordersEnabled:))
	[menuItem setState:[self simpleLineLayoutDebugBordersEnabled] ? NSOnState : NSOffState];
	else if (action == @selector(toggleShowTiledScrollingIndicator:))
	[menuItem setState:[self tiledScrollingIndicatorVisible] ? NSOnState : NSOffState];
	else if (action == @selector(toggleUseUISideCompositing:))
	[menuItem setState:[self useUISideCompositing] ? NSOnState : NSOffState];
	else if (action == @selector(togglePerWindowWebProcessesDisabled:))
	[menuItem setState:[self perWindowWebProcessesDisabled] ? NSOnState : NSOffState];
	else if (action == @selector(toggleEnableSubPixelCSSOMMetrics:))
	[menuItem setState:[self subPixelCSSOMMetricsEnabled] ? NSOnState : NSOffState];
	else if (action == @selector(toggleDebugOverlay:))
	[menuItem setState:[self debugOverlayVisible:menuItem] ? NSOnState : NSOffState];

	return YES;
	}

	- (void)_toggleBooleanDefault:(NSString *)defaultName
	{
	NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
	[defaults setBool:![defaults boolForKey:defaultName] forKey:defaultName];

	[(BrowserAppDelegate *)[[NSApplication sharedApplication] delegate] didChangeSettings];
	}

	- (void)toggleUseWebKit2ByDefault:(id)sender
	{
	[self _toggleBooleanDefault:UseWebKit2ByDefaultPreferenceKey];
	}

	- (BOOL)useWebKit2ByDefault
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:UseWebKit2ByDefaultPreferenceKey];
	}

	- (void)toggleUseTransparentWindows:(id)sender
	{
	[self _toggleBooleanDefault:UseTransparentWindowsPreferenceKey];
	}

	- (BOOL)useTransparentWindows
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:UseTransparentWindowsPreferenceKey];
	}

	- (void)toggleUsePaginatedMode:(id)sender
	{
	[self _toggleBooleanDefault:UsePaginatedModePreferenceKey];
	}

	- (BOOL)usePaginatedMode
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:UsePaginatedModePreferenceKey];
	}

	- (void)toggleUseUISideCompositing:(id)sender
	{
	[self _toggleBooleanDefault:UseRemoteLayerTreeDrawingAreaPreferenceKey];
	}

	- (BOOL)useUISideCompositing
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:UseRemoteLayerTreeDrawingAreaPreferenceKey];
	}

	- (void)togglePerWindowWebProcessesDisabled:(id)sender
	{
	NSAlert *alert = [[NSAlert alloc] init];
	[alert setMessageText:self.perWindowWebProcessesDisabled ? @"Are you sure you want to switch to per-window web processes?" : @"Are you sure you want to switch to a single web process?"];
	[alert setInformativeText:@"This requires quitting and relaunching MiniBrowser. I'll do the quitting. You will have to do the relaunching."];
	[alert addButtonWithTitle:@"Switch and Quit"];
	[alert addButtonWithTitle:@"Cancel"];

	if ([alert runModal] != NSAlertFirstButtonReturn)
	return;

	[self _toggleBooleanDefault:PerWindowWebProcessesDisabledKey];
	[NSApp terminate:self];
	}

	- (BOOL)perWindowWebProcessesDisabled
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:PerWindowWebProcessesDisabledKey];
	}

	- (void)toggleShowLayerBorders:(id)sender
	{
	[self _toggleBooleanDefault:LayerBordersVisiblePreferenceKey];
	}

	- (BOOL)layerBordersVisible
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:LayerBordersVisiblePreferenceKey];
	}

	- (void)toggleSimpleLineLayoutDebugBordersEnabled:(id)sender
	{
	[self _toggleBooleanDefault:SimpleLineLayoutDebugBordersEnabledPreferenceKey];
	}

	- (BOOL)simpleLineLayoutDebugBordersEnabled
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:SimpleLineLayoutDebugBordersEnabledPreferenceKey];
	}

	- (void)toggleShowTiledScrollingIndicator:(id)sender
	{
	[self _toggleBooleanDefault:TiledScrollingIndicatorVisiblePreferenceKey];
	}

	- (BOOL)tiledScrollingIndicatorVisible
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:TiledScrollingIndicatorVisiblePreferenceKey];
	}

	- (void)toggleEnableSubPixelCSSOMMetrics:(id)sender
	{
	[self _toggleBooleanDefault:EnableSubPixelCSSOMMetricsPreferenceKey];
	}

	- (BOOL)subPixelCSSOMMetricsEnabled
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:EnableSubPixelCSSOMMetricsPreferenceKey];
	}

	- (BOOL)nonFastScrollableRegionOverlayVisible
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:NonFastScrollableRegionOverlayVisiblePreferenceKey];
	}

	- (BOOL)wheelEventHandlerRegionOverlayVisible
	{
	return [[NSUserDefaults standardUserDefaults] boolForKey:WheelEventHandlerRegionOverlayVisiblePreferenceKey];
	}

	- (NSString *)preferenceKeyForRegionOverlayTag:(NSUInteger)tag
	{
	switch (tag) {
	case NonFastScrollableRegionOverlayTag:
	return NonFastScrollableRegionOverlayVisiblePreferenceKey;

	case WheelEventHandlerRegionOverlayTag:
	return WheelEventHandlerRegionOverlayVisiblePreferenceKey;
	}
	return nil;
	}

	- (void)toggleDebugOverlay:(id)sender
	{
	NSString *preferenceKey = [self preferenceKeyForRegionOverlayTag:[sender tag]];
	if (preferenceKey)
	[self _toggleBooleanDefault:preferenceKey];
	}

	- (BOOL)debugOverlayVisible:(NSMenuItem *)menuItem
	{
	NSString *preferenceKey = [self preferenceKeyForRegionOverlayTag:[menuItem tag]];
	if (preferenceKey)
	return [[NSUserDefaults standardUserDefaults] boolForKey:preferenceKey];

	return NO;
	}

	- (NSString *)defaultURL
	{
	NSString *customDefaultURL = [[NSUserDefaults standardUserDefaults] stringForKey:DefaultURLPreferenceKey];
	if (customDefaultURL)
	return customDefaultURL;
	return defaultURL;
	}

	@end