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Tweaks/FLEX/Manager/FLEXManager.m

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+//
+//  FLEXManager.m
+//  Flipboard
+//
+//  Created by Ryan Olson on 4/4/14.
+//  Copyright (c) 2020 FLEX Team. All rights reserved.
+//
+
+#import "FLEXManager.h"
+#import "FLEXUtility.h"
+#import "FLEXExplorerViewController.h"
+#import "FLEXWindow.h"
+#import "FLEXObjectExplorerViewController.h"
+#import "FLEXFileBrowserController.h"
+
+@interface FLEXManager () <FLEXWindowEventDelegate, FLEXExplorerViewControllerDelegate>
+
+@property (nonatomic, readonly, getter=isHidden) BOOL hidden;
+
+@property (nonatomic) FLEXWindow *explorerWindow;
+@property (nonatomic) FLEXExplorerViewController *explorerViewController;
+
+@property (nonatomic, readonly) NSMutableArray<FLEXGlobalsEntry *> *userGlobalEntries;
+@property (nonatomic, readonly) NSMutableDictionary<NSString *, FLEXCustomContentViewerFuture> *customContentTypeViewers;
+
+@end
+
+@implementation FLEXManager
+
++ (instancetype)sharedManager {
+    static FLEXManager *sharedManager = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        sharedManager = [self new];
+    });
+    return sharedManager;
+}
+
+- (instancetype)init {
+    self = [super init];
+    if (self) {
+        _userGlobalEntries = [NSMutableArray new];
+        _customContentTypeViewers = [NSMutableDictionary new];
+    }
+    return self;
+}
+
+- (FLEXWindow *)explorerWindow {
+    NSAssert(NSThread.isMainThread, @"You must use %@ from the main thread only.", NSStringFromClass([self class]));
+    
+    if (!_explorerWindow) {
+        _explorerWindow = [[FLEXWindow alloc] initWithFrame:FLEXUtility.appKeyWindow.bounds];
+        _explorerWindow.eventDelegate = self;
+        _explorerWindow.rootViewController = self.explorerViewController;
+    }
+    
+    return _explorerWindow;
+}
+
+- (FLEXExplorerViewController *)explorerViewController {
+    if (!_explorerViewController) {
+        _explorerViewController = [FLEXExplorerViewController new];
+        _explorerViewController.delegate = self;
+    }
+
+    return _explorerViewController;
+}
+
+- (void)showExplorer {
+    UIWindow *flex = self.explorerWindow;
+    flex.hidden = NO;
+    if (@available(iOS 13.0, *)) {
+        // Only look for a new scene if we don't have one
+        if (!flex.windowScene) {
+            flex.windowScene = FLEXUtility.appKeyWindow.windowScene;
+        }
+    }
+}
+
+- (void)hideExplorer {
+    self.explorerWindow.hidden = YES;
+}
+
+- (void)toggleExplorer {
+    if (self.explorerWindow.isHidden) {
+        if (@available(iOS 13.0, *)) {
+            [self showExplorerFromScene:FLEXUtility.appKeyWindow.windowScene];
+        } else {
+            [self showExplorer];
+        }
+    } else {
+        [self hideExplorer];
+    }
+}
+
+- (void)dismissAnyPresentedTools:(void (^)(void))completion {
+    if (self.explorerViewController.presentedViewController) {
+        [self.explorerViewController dismissViewControllerAnimated:YES completion:completion];
+    } else if (completion) {
+        completion();
+    }
+}
+
+- (void)presentTool:(UINavigationController * _Nonnull (^)(void))future completion:(void (^)(void))completion {
+    [self showExplorer];
+    [self.explorerViewController presentTool:future completion:completion];
+}
+
+- (void)showExplorerFromScene:(UIWindowScene *)scene {
+    if (@available(iOS 13.0, *)) {
+        self.explorerWindow.windowScene = scene;
+    }
+    self.explorerWindow.hidden = NO;
+}
+
+- (BOOL)isHidden {
+    return self.explorerWindow.isHidden;
+}
+
+- (FLEXExplorerToolbar *)toolbar {
+    return self.explorerViewController.explorerToolbar;
+}
+
+
+#pragma mark - FLEXWindowEventDelegate
+
+- (BOOL)shouldHandleTouchAtPoint:(CGPoint)pointInWindow {
+    // Ask the explorer view controller
+    return [self.explorerViewController shouldReceiveTouchAtWindowPoint:pointInWindow];
+}
+
+- (BOOL)canBecomeKeyWindow {
+    // Only when the explorer view controller wants it because
+    // it needs to accept key input & affect the status bar.
+    return self.explorerViewController.wantsWindowToBecomeKey;
+}
+
+
+#pragma mark - FLEXExplorerViewControllerDelegate
+
+- (void)explorerViewControllerDidFinish:(FLEXExplorerViewController *)explorerViewController {
+    [self hideExplorer];
+}
+
+@end