Merge branch 'charlesmchen/appContext'

Signal.xcodeproj/project.pbxproj

@@ -35,6 +35,7 @@
 		348F2EAE1F0D21BC00D4ECE0 /* DeviceSleepManager.swift in Sources */ = {isa = PBXBuildFile; fileRef = 348F2EAD1F0D21BC00D4ECE0 /* DeviceSleepManager.swift */; };
 		3497DBEC1ECE257500DB2605 /* OWSCountryMetadata.m in Sources */ = {isa = PBXBuildFile; fileRef = 3497DBEB1ECE257500DB2605 /* OWSCountryMetadata.m */; };
 		3497DBEF1ECE2E4700DB2605 /* DomainFrontingCountryViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 3497DBEE1ECE2E4700DB2605 /* DomainFrontingCountryViewController.m */; };
+		34B0796D1FCF46B100E248C2 /* MainAppContext.m in Sources */ = {isa = PBXBuildFile; fileRef = 34B0796B1FCF46B000E248C2 /* MainAppContext.m */; };
 		34B3F8711E8DF1700035BE1A /* AboutTableViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 34B3F8351E8DF1700035BE1A /* AboutTableViewController.m */; };
 		34B3F8721E8DF1700035BE1A /* AdvancedSettingsTableViewController.m in Sources */ = {isa = PBXBuildFile; fileRef = 34B3F8371E8DF1700035BE1A /* AdvancedSettingsTableViewController.m */; };
 		34B3F8741E8DF1700035BE1A /* AttachmentSharing.m in Sources */ = {isa = PBXBuildFile; fileRef = 34B3F83A1E8DF1700035BE1A /* AttachmentSharing.m */; };
@@ -506,6 +507,8 @@
 		3497DBEB1ECE257500DB2605 /* OWSCountryMetadata.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = OWSCountryMetadata.m; sourceTree = "<group>"; };
 		3497DBED1ECE2E4700DB2605 /* DomainFrontingCountryViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = DomainFrontingCountryViewController.h; sourceTree = "<group>"; };
 		3497DBEE1ECE2E4700DB2605 /* DomainFrontingCountryViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = DomainFrontingCountryViewController.m; sourceTree = "<group>"; };
+		34B0796B1FCF46B000E248C2 /* MainAppContext.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = MainAppContext.m; sourceTree = "<group>"; };
+		34B0796C1FCF46B000E248C2 /* MainAppContext.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MainAppContext.h; sourceTree = "<group>"; };
 		34B3F8341E8DF1700035BE1A /* AboutTableViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AboutTableViewController.h; sourceTree = "<group>"; };
 		34B3F8351E8DF1700035BE1A /* AboutTableViewController.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = AboutTableViewController.m; sourceTree = "<group>"; };
 		34B3F8361E8DF1700035BE1A /* AdvancedSettingsTableViewController.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = AdvancedSettingsTableViewController.h; sourceTree = "<group>"; };
@@ -1578,6 +1581,8 @@
 				76EB04EA18170B33006006FC /* FunctionalUtil.h */,
 				76EB04EB18170B33006006FC /* FunctionalUtil.m */,
 				455AC69A1F4F79E500134004 /* ImageCache.swift */,
+				34B0796C1FCF46B000E248C2 /* MainAppContext.h */,
+				34B0796B1FCF46B000E248C2 /* MainAppContext.m */,
 				34CA1C231F706B5400E51C51 /* NSAttributedString+OWS.h */,
 				34CA1C241F706B5400E51C51 /* NSAttributedString+OWS.m */,
 				76EB04EC18170B33006006FC /* NumberUtil.h */,
@@ -1597,6 +1602,7 @@
 				4579431D1E7C8CE9008ED0C0 /* Pastelog.m */,
 				450DF2041E0D74AC003D14BE /* Platform.swift */,
 				4542F0951EBB9E9A00C7EE92 /* Promise+retainUntilComplete.swift */,
+				45360B8C1F9521F800FA666C /* Searcher.swift */,
 				76EB04F518170B33006006FC /* StringUtil.h */,
 				76EB04F618170B33006006FC /* StringUtil.m */,
 				4521C3BF1F59F3BA00B4C582 /* TextFieldHelper.swift */,
@@ -1610,7 +1616,6 @@
 				76EB04FB18170B33006006FC /* Util.h */,
 				45F170D51E315310003FC1F2 /* Weak.swift */,
 				45F170CB1E310E22003FC1F2 /* WeakTimer.swift */,
-				45360B8C1F9521F800FA666C /* Searcher.swift */,
 			);
 			path = util;
 			sourceTree = "<group>";
@@ -2575,6 +2580,7 @@
 				34F308A21ECB469700BB7697 /* OWSBezierPathView.m in Sources */,
 				34CE88E71F2FB9A10098030F /* ProfileViewController.m in Sources */,
 				348F2EAE1F0D21BC00D4ECE0 /* DeviceSleepManager.swift in Sources */,
+				34B0796D1FCF46B100E248C2 /* MainAppContext.m in Sources */,
 				34E3EF101EFC2684007F6822 /* DebugUIPage.m in Sources */,
 				34D1F0AE1F867BFC0066283D /* OWSMessageCell.m in Sources */,
 				451686AB1F520CDA00AC3D4B /* MultiDeviceProfileKeyUpdateJob.swift in Sources */,

Signal/src/AppDelegate.m

@@ -8,6 +8,7 @@
 #import "CodeVerificationViewController.h"
 #import "DebugLogger.h"
 #import "Environment.h"
+#import "MainAppContext.h"
 #import "NotificationsManager.h"
 #import "OWSContactsManager.h"
 #import "OWSContactsSyncing.h"
@@ -89,6 +90,10 @@ static NSString *const kURLHostVerifyPrefix             = @"verify";
 }
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+
+    // This should be the first thing we do.
+    SetCurrentAppContext([MainAppContext new]);
+
     BOOL loggingIsEnabled;
 #ifdef DEBUG
     // Specified at Product -> Scheme -> Edit Scheme -> Test -> Arguments -> Environment to avoid things like

Signal/src/util/MainAppContext.h

@@ -0,0 +1,13 @@
+//
+//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
+//
+
+#import <SignalServiceKit/AppContext.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface MainAppContext : NSObject <AppContext>
+
+@end
+
+NS_ASSUME_NONNULL_END

Signal/src/util/MainAppContext.m

@@ -0,0 +1,29 @@
+//
+//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
+//
+
+#import "MainAppContext.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@implementation MainAppContext
+
+- (BOOL)isMainApp
+{
+    return YES;
+}
+
+- (BOOL)isMainAppAndActive
+{
+    return [UIApplication sharedApplication].applicationState == UIApplicationStateActive;
+}
+
+- (UIBackgroundTaskIdentifier)beginBackgroundTaskWithExpirationHandler:
+    (BackgroundTaskExpirationHandler)expirationHandler
+{
+    return [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:expirationHandler];
+}
+
+@end
+
+NS_ASSUME_NONNULL_END

SignalServiceKit/src/Util/AppContext.h

@@ -0,0 +1,22 @@
+//
+//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
+//
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef void (^BackgroundTaskExpirationHandler)(void);
+
+@protocol AppContext <NSObject>
+
+- (BOOL)isMainApp;
+- (BOOL)isMainAppAndActive;
+
+- (UIBackgroundTaskIdentifier)beginBackgroundTaskWithExpirationHandler:
+    (BackgroundTaskExpirationHandler)expirationHandler;
+
+@end
+
+id<AppContext> CurrentAppContext();
+void SetCurrentAppContext(id<AppContext> appContext);
+
+NS_ASSUME_NONNULL_END

SignalServiceKit/src/Util/AppContext.m

@@ -0,0 +1,25 @@
+//
+//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
+//
+
+#import "AppContext.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+static id<AppContext> currentAppContext = nil;
+
+id<AppContext> CurrentAppContext()
+{
+    OWSCAssert(currentAppContext);
+
+    return currentAppContext;
+}
+
+void SetCurrentAppContext(id<AppContext> appContext)
+{
+    OWSCAssert(!currentAppContext);
+
+    currentAppContext = appContext;
+}
+
+NS_ASSUME_NONNULL_END