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//
// SDLLockScreenPresenter.m
// SmartDeviceLink-iOS
//
// Created by Joel Fischer on 7/15/16.
// Copyright © 2016 smartdevicelink. All rights reserved.
//
#import "SDLLockScreenPresenter.h"
#import "SDLLogMacros.h"
#import "SDLScreenshotViewController.h"
#import "SDLStreamingMediaManagerConstants.h"
NS_ASSUME_NONNULL_BEGIN
@interface SDLLockScreenPresenter ()
@property (strong, nonatomic) SDLScreenshotViewController *screenshotViewController;
@property (strong, nonatomic) UIWindow *lockWindow;
@end
@implementation SDLLockScreenPresenter
- (instancetype)init {
self = [super init];
if (!self) { return nil; }
CGRect screenFrame = [[UIScreen mainScreen] bounds];
_lockWindow = [[UIWindow alloc] initWithFrame:screenFrame];
_screenshotViewController = [[SDLScreenshotViewController alloc] init];
_lockWindow.rootViewController = _screenshotViewController;
return self;
}
- (void)present {
dispatch_async(dispatch_get_main_queue(), ^{
if (self.lockWindow.isKeyWindow) {
SDLLogW(@"Attempted to present lock window when it is already presented");
return;
}
NSArray* windows = [[UIApplication sharedApplication] windows];
UIWindow *appWindow = nil;
for (UIWindow *window in windows) {
if (window != self.lockWindow) {
appWindow = window;
break;
}
}
if (appWindow == nil) {
SDLLogE(@"Unable to find the app's window");
return;
}
// We let ourselves know that the lockscreen will present, because we have to pause streaming video for that 0.3 seconds or else it will be very janky.
[[NSNotificationCenter defaultCenter] postNotificationName:SDLLockScreenManagerWillPresentLockScreenViewController object:nil];
CGRect firstFrame = appWindow.frame;
firstFrame.origin.x = CGRectGetWidth(firstFrame);
appWindow.frame = firstFrame;
// We then move the lockWindow to the original appWindow location.
self.lockWindow.frame = appWindow.bounds;
[self.screenshotViewController loadScreenshotOfWindow:appWindow];
[self.lockWindow makeKeyAndVisible];
// And present the lock screen.
SDLLogD(@"Present lock screen window");
[self.lockWindow.rootViewController presentViewController:self.lockViewController animated:YES completion:^{
// Tell ourselves we are done.
[[NSNotificationCenter defaultCenter] postNotificationName:SDLLockScreenManagerDidPresentLockScreenViewController object:nil];
}];
});
}
- (void)dismiss {
dispatch_async(dispatch_get_main_queue(), ^{
NSArray* windows = [[UIApplication sharedApplication] windows];
UIWindow *appWindow = nil;
for (UIWindow *window in windows) {
if (window != self.lockWindow) {
appWindow = window;
break;
}
}
if (appWindow == nil) {
SDLLogE(@"Unable to find the app's window");
return;
} else if (appWindow.isKeyWindow) {
SDLLogW(@"Attempted to dismiss lock screen, but it is already dismissed");
return;
} else if (self.lockViewController == nil) {
SDLLogW(@"Attempted to dismiss lock screen, but lockViewController is not set");
return;
}
// Let us know we are about to dismiss.
[[NSNotificationCenter defaultCenter] postNotificationName:SDLLockScreenManagerWillDismissLockScreenViewController object:nil];
// Dismiss the lockscreen
SDLLogD(@"Dismiss lock screen window");
[self.lockViewController dismissViewControllerAnimated:YES completion:^{
CGRect lockFrame = self.lockWindow.frame;
lockFrame.origin.x = CGRectGetWidth(lockFrame);
self.lockWindow.frame = lockFrame;
// Quickly move the map back, and make it the key window.
appWindow.frame = self.lockWindow.bounds;
[appWindow makeKeyAndVisible];
// Tell ourselves we are done.
[[NSNotificationCenter defaultCenter] postNotificationName:SDLLockScreenManagerDidDismissLockScreenViewController object:nil];
}];
});
}
- (BOOL)presented {
__block BOOL isPresented = NO;
if ([NSThread isMainThread]) {
isPresented = [self sdl_presented];
} else {
dispatch_sync(dispatch_get_main_queue(), ^{
isPresented = [self sdl_presented];
});
}
return isPresented;
}
- (BOOL)sdl_presented {
return (self.lockViewController.isViewLoaded && (self.lockViewController.view.window || self.lockViewController.isBeingPresented) && self.lockWindow.isKeyWindow);
}
@end
NS_ASSUME_NONNULL_END
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