added files via upload

Tweaks/FLEX/ExplorerInterface/FLEXWindow.h

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+//
+//  FLEXWindow.h
+//  Flipboard
+//
+//  Created by Ryan Olson on 4/13/14.
+//  Copyright (c) 2020 FLEX Team. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@protocol FLEXWindowEventDelegate <NSObject>
+
+- (BOOL)shouldHandleTouchAtPoint:(CGPoint)pointInWindow;
+- (BOOL)canBecomeKeyWindow;
+
+@end
+
+#pragma mark -
+@interface FLEXWindow : UIWindow
+
+@property (nonatomic, weak) id <FLEXWindowEventDelegate> eventDelegate;
+
+/// Tracked so we can restore the key window after dismissing a modal.
+/// We need to become key after modal presentation so we can correctly capture input.
+/// If we're just showing the toolbar, we want the main app's window to remain key
+/// so that we don't interfere with input, status bar, etc.
+@property (nonatomic, readonly) UIWindow *previousKeyWindow;
+
+@end